Initial Commit

segment_anything/.ipynb_checkpoints/__init__-checkpoint.py

@@ -1,15 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-from .build_sam import (
-    build_sam,
-    build_sam_vit_h,
-    build_sam_vit_l,
-    build_sam_vit_b,
-    sam_model_registry,
-)
-from .predictor import SamPredictor
-from .automatic_mask_generator import SamAutomaticMaskGenerator

segment_anything/.ipynb_checkpoints/automatic_mask_generator-checkpoint.py

@@ -1,372 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import numpy as np
-import torch
-from torchvision.ops.boxes import batched_nms, box_area  # type: ignore
-
-from typing import Any, Dict, List, Optional, Tuple
-
-from .modeling import Sam
-from .predictor import SamPredictor
-from .utils.amg import (
-    MaskData,
-    area_from_rle,
-    batch_iterator,
-    batched_mask_to_box,
-    box_xyxy_to_xywh,
-    build_all_layer_point_grids,
-    calculate_stability_score,
-    coco_encode_rle,
-    generate_crop_boxes,
-    is_box_near_crop_edge,
-    mask_to_rle_pytorch,
-    remove_small_regions,
-    rle_to_mask,
-    uncrop_boxes_xyxy,
-    uncrop_masks,
-    uncrop_points,
-)
-
-
-class SamAutomaticMaskGenerator:
-    def __init__(
-        self,
-        model: Sam,
-        points_per_side: Optional[int] = 32,
-        points_per_batch: int = 64,
-        pred_iou_thresh: float = 0.88,
-        stability_score_thresh: float = 0.95,
-        stability_score_offset: float = 1.0,
-        box_nms_thresh: float = 0.7,
-        crop_n_layers: int = 0,
-        crop_nms_thresh: float = 0.7,
-        crop_overlap_ratio: float = 512 / 1500,
-        crop_n_points_downscale_factor: int = 1,
-        point_grids: Optional[List[np.ndarray]] = None,
-        min_mask_region_area: int = 0,
-        output_mode: str = "binary_mask",
-    ) -> None:
-        """
-        Using a SAM model, generates masks for the entire image.
-        Generates a grid of point prompts over the image, then filters
-        low quality and duplicate masks. The default settings are chosen
-        for SAM with a ViT-H backbone.
-
-        Arguments:
-          model (Sam): The SAM model to use for mask prediction.
-          points_per_side (int or None): The number of points to be sampled
-            along one side of the image. The total number of points is
-            points_per_side**2. If None, 'point_grids' must provide explicit
-            point sampling.
-          points_per_batch (int): Sets the number of points run simultaneously
-            by the model. Higher numbers may be faster but use more GPU memory.
-          pred_iou_thresh (float): A filtering threshold in [0,1], using the
-            model's predicted mask quality.
-          stability_score_thresh (float): A filtering threshold in [0,1], using
-            the stability of the mask under changes to the cutoff used to binarize
-            the model's mask predictions.
-          stability_score_offset (float): The amount to shift the cutoff when
-            calculated the stability score.
-          box_nms_thresh (float): The box IoU cutoff used by non-maximal
-            suppression to filter duplicate masks.
-          crop_n_layers (int): If >0, mask prediction will be run again on
-            crops of the image. Sets the number of layers to run, where each
-            layer has 2**i_layer number of image crops.
-          crop_nms_thresh (float): The box IoU cutoff used by non-maximal
-            suppression to filter duplicate masks between different crops.
-          crop_overlap_ratio (float): Sets the degree to which crops overlap.
-            In the first crop layer, crops will overlap by this fraction of
-            the image length. Later layers with more crops scale down this overlap.
-          crop_n_points_downscale_factor (int): The number of points-per-side
-            sampled in layer n is scaled down by crop_n_points_downscale_factor**n.
-          point_grids (list(np.ndarray) or None): A list over explicit grids
-            of points used for sampling, normalized to [0,1]. The nth grid in the
-            list is used in the nth crop layer. Exclusive with points_per_side.
-          min_mask_region_area (int): If >0, postprocessing will be applied
-            to remove disconnected regions and holes in masks with area smaller
-            than min_mask_region_area. Requires opencv.
-          output_mode (str): The form masks are returned in. Can be 'binary_mask',
-            'uncompressed_rle', or 'coco_rle'. 'coco_rle' requires pycocotools.
-            For large resolutions, 'binary_mask' may consume large amounts of
-            memory.
-        """
-
-        assert (points_per_side is None) != (
-            point_grids is None
-        ), "Exactly one of points_per_side or point_grid must be provided."
-        if points_per_side is not None:
-            self.point_grids = build_all_layer_point_grids(
-                points_per_side,
-                crop_n_layers,
-                crop_n_points_downscale_factor,
-            )
-        elif point_grids is not None:
-            self.point_grids = point_grids
-        else:
-            raise ValueError("Can't have both points_per_side and point_grid be None.")
-
-        assert output_mode in [
-            "binary_mask",
-            "uncompressed_rle",
-            "coco_rle",
-        ], f"Unknown output_mode {output_mode}."
-        if output_mode == "coco_rle":
-            from pycocotools import mask as mask_utils  # type: ignore # noqa: F401
-
-        if min_mask_region_area > 0:
-            import cv2  # type: ignore # noqa: F401
-
-        self.predictor = SamPredictor(model)
-        self.points_per_batch = points_per_batch
-        self.pred_iou_thresh = pred_iou_thresh
-        self.stability_score_thresh = stability_score_thresh
-        self.stability_score_offset = stability_score_offset
-        self.box_nms_thresh = box_nms_thresh
-        self.crop_n_layers = crop_n_layers
-        self.crop_nms_thresh = crop_nms_thresh
-        self.crop_overlap_ratio = crop_overlap_ratio
-        self.crop_n_points_downscale_factor = crop_n_points_downscale_factor
-        self.min_mask_region_area = min_mask_region_area
-        self.output_mode = output_mode
-
-    @torch.no_grad()
-    def generate(self, image: np.ndarray) -> List[Dict[str, Any]]:
-        """
-        Generates masks for the given image.
-
-        Arguments:
-          image (np.ndarray): The image to generate masks for, in HWC uint8 format.
-
-        Returns:
-           list(dict(str, any)): A list over records for masks. Each record is
-             a dict containing the following keys:
-               segmentation (dict(str, any) or np.ndarray): The mask. If
-                 output_mode='binary_mask', is an array of shape HW. Otherwise,
-                 is a dictionary containing the RLE.
-               bbox (list(float)): The box around the mask, in XYWH format.
-               area (int): The area in pixels of the mask.
-               predicted_iou (float): The model's own prediction of the mask's
-                 quality. This is filtered by the pred_iou_thresh parameter.
-               point_coords (list(list(float))): The point coordinates input
-                 to the model to generate this mask.
-               stability_score (float): A measure of the mask's quality. This
-                 is filtered on using the stability_score_thresh parameter.
-               crop_box (list(float)): The crop of the image used to generate
-                 the mask, given in XYWH format.
-        """
-
-        # Generate masks
-        mask_data = self._generate_masks(image)
-
-        # Filter small disconnected regions and holes in masks
-        if self.min_mask_region_area > 0:
-            mask_data = self.postprocess_small_regions(
-                mask_data,
-                self.min_mask_region_area,
-                max(self.box_nms_thresh, self.crop_nms_thresh),
-            )
-
-        # Encode masks
-        if self.output_mode == "coco_rle":
-            mask_data["segmentations"] = [coco_encode_rle(rle) for rle in mask_data["rles"]]
-        elif self.output_mode == "binary_mask":
-            mask_data["segmentations"] = [rle_to_mask(rle) for rle in mask_data["rles"]]
-        else:
-            mask_data["segmentations"] = mask_data["rles"]
-
-        # Write mask records
-        curr_anns = []
-        for idx in range(len(mask_data["segmentations"])):
-            ann = {
-                "segmentation": mask_data["segmentations"][idx],
-                "area": area_from_rle(mask_data["rles"][idx]),
-                "bbox": box_xyxy_to_xywh(mask_data["boxes"][idx]).tolist(),
-                "predicted_iou": mask_data["iou_preds"][idx].item(),
-                "point_coords": [mask_data["points"][idx].tolist()],
-                "stability_score": mask_data["stability_score"][idx].item(),
-                "crop_box": box_xyxy_to_xywh(mask_data["crop_boxes"][idx]).tolist(),
-            }
-            curr_anns.append(ann)
-
-        return curr_anns
-
-    def _generate_masks(self, image: np.ndarray) -> MaskData:
-        orig_size = image.shape[:2]
-        crop_boxes, layer_idxs = generate_crop_boxes(
-            orig_size, self.crop_n_layers, self.crop_overlap_ratio
-        )
-
-        # Iterate over image crops
-        data = MaskData()
-        for crop_box, layer_idx in zip(crop_boxes, layer_idxs):
-            crop_data = self._process_crop(image, crop_box, layer_idx, orig_size)
-            data.cat(crop_data)
-
-        # Remove duplicate masks between crops
-        if len(crop_boxes) > 1:
-            # Prefer masks from smaller crops
-            scores = 1 / box_area(data["crop_boxes"])
-            scores = scores.to(data["boxes"].device)
-            keep_by_nms = batched_nms(
-                data["boxes"].float(),
-                scores,
-                torch.zeros_like(data["boxes"][:, 0]),  # categories
-                iou_threshold=self.crop_nms_thresh,
-            )
-            data.filter(keep_by_nms)
-
-        data.to_numpy()
-        return data
-
-    def _process_crop(
-        self,
-        image: np.ndarray,
-        crop_box: List[int],
-        crop_layer_idx: int,
-        orig_size: Tuple[int, ...],
-    ) -> MaskData:
-        # Crop the image and calculate embeddings
-        x0, y0, x1, y1 = crop_box
-        cropped_im = image[y0:y1, x0:x1, :]
-        cropped_im_size = cropped_im.shape[:2]
-        self.predictor.set_image(cropped_im)
-
-        # Get points for this crop
-        points_scale = np.array(cropped_im_size)[None, ::-1]
-        points_for_image = self.point_grids[crop_layer_idx] * points_scale
-
-        # Generate masks for this crop in batches
-        data = MaskData()
-        for (points,) in batch_iterator(self.points_per_batch, points_for_image):
-            batch_data = self._process_batch(points, cropped_im_size, crop_box, orig_size)
-            data.cat(batch_data)
-            del batch_data
-        self.predictor.reset_image()
-
-        # Remove duplicates within this crop.
-        keep_by_nms = batched_nms(
-            data["boxes"].float(),
-            data["iou_preds"],
-            torch.zeros_like(data["boxes"][:, 0]),  # categories
-            iou_threshold=self.box_nms_thresh,
-        )
-        data.filter(keep_by_nms)
-
-        # Return to the original image frame
-        data["boxes"] = uncrop_boxes_xyxy(data["boxes"], crop_box)
-        data["points"] = uncrop_points(data["points"], crop_box)
-        data["crop_boxes"] = torch.tensor([crop_box for _ in range(len(data["rles"]))])
-
-        return data
-
-    def _process_batch(
-        self,
-        points: np.ndarray,
-        im_size: Tuple[int, ...],
-        crop_box: List[int],
-        orig_size: Tuple[int, ...],
-    ) -> MaskData:
-        orig_h, orig_w = orig_size
-
-        # Run model on this batch
-        transformed_points = self.predictor.transform.apply_coords(points, im_size)
-        in_points = torch.as_tensor(transformed_points, device=self.predictor.device)
-        in_labels = torch.ones(in_points.shape[0], dtype=torch.int, device=in_points.device)
-        masks, iou_preds, _ = self.predictor.predict_torch(
-            in_points[:, None, :],
-            in_labels[:, None],
-            multimask_output=True,
-            return_logits=True,
-        )
-
-        # Serialize predictions and store in MaskData
-        data = MaskData(
-            masks=masks.flatten(0, 1),
-            iou_preds=iou_preds.flatten(0, 1),
-            points=torch.as_tensor(points.repeat(masks.shape[1], axis=0)),
-        )
-        del masks
-
-        # Filter by predicted IoU
-        if self.pred_iou_thresh > 0.0:
-            keep_mask = data["iou_preds"] > self.pred_iou_thresh
-            data.filter(keep_mask)
-
-        # Calculate stability score
-        data["stability_score"] = calculate_stability_score(
-            data["masks"], self.predictor.model.mask_threshold, self.stability_score_offset
-        )
-        if self.stability_score_thresh > 0.0:
-            keep_mask = data["stability_score"] >= self.stability_score_thresh
-            data.filter(keep_mask)
-
-        # Threshold masks and calculate boxes
-        data["masks"] = data["masks"] > self.predictor.model.mask_threshold
-        data["boxes"] = batched_mask_to_box(data["masks"])
-
-        # Filter boxes that touch crop boundaries
-        keep_mask = ~is_box_near_crop_edge(data["boxes"], crop_box, [0, 0, orig_w, orig_h])
-        if not torch.all(keep_mask):
-            data.filter(keep_mask)
-
-        # Compress to RLE
-        data["masks"] = uncrop_masks(data["masks"], crop_box, orig_h, orig_w)
-        data["rles"] = mask_to_rle_pytorch(data["masks"])
-        del data["masks"]
-
-        return data
-
-    @staticmethod
-    def postprocess_small_regions(
-        mask_data: MaskData, min_area: int, nms_thresh: float
-    ) -> MaskData:
-        """
-        Removes small disconnected regions and holes in masks, then reruns
-        box NMS to remove any new duplicates.
-
-        Edits mask_data in place.
-
-        Requires open-cv as a dependency.
-        """
-        if len(mask_data["rles"]) == 0:
-            return mask_data
-
-        # Filter small disconnected regions and holes
-        new_masks = []
-        scores = []
-        for rle in mask_data["rles"]:
-            mask = rle_to_mask(rle)
-
-            mask, changed = remove_small_regions(mask, min_area, mode="holes")
-            unchanged = not changed
-            mask, changed = remove_small_regions(mask, min_area, mode="islands")
-            unchanged = unchanged and not changed
-
-            new_masks.append(torch.as_tensor(mask).unsqueeze(0))
-            # Give score=0 to changed masks and score=1 to unchanged masks
-            # so NMS will prefer ones that didn't need postprocessing
-            scores.append(float(unchanged))
-
-        # Recalculate boxes and remove any new duplicates
-        masks = torch.cat(new_masks, dim=0)
-        boxes = batched_mask_to_box(masks)
-        keep_by_nms = batched_nms(
-            boxes.float(),
-            torch.as_tensor(scores),
-            torch.zeros_like(boxes[:, 0]),  # categories
-            iou_threshold=nms_thresh,
-        )
-
-        # Only recalculate RLEs for masks that have changed
-        for i_mask in keep_by_nms:
-            if scores[i_mask] == 0.0:
-                mask_torch = masks[i_mask].unsqueeze(0)
-                mask_data["rles"][i_mask] = mask_to_rle_pytorch(mask_torch)[0]
-                mask_data["boxes"][i_mask] = boxes[i_mask]  # update res directly
-        mask_data.filter(keep_by_nms)
-
-        return mask_data

segment_anything/.ipynb_checkpoints/build_sam-checkpoint.py

@@ -1,107 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import torch
-
-from functools import partial
-
-from .modeling import ImageEncoderViT, MaskDecoder, PromptEncoder, Sam, TwoWayTransformer
-
-
-def build_sam_vit_h(checkpoint=None):
-    return _build_sam(
-        encoder_embed_dim=1280,
-        encoder_depth=32,
-        encoder_num_heads=16,
-        encoder_global_attn_indexes=[7, 15, 23, 31],
-        checkpoint=checkpoint,
-    )
-
-
-build_sam = build_sam_vit_h
-
-
-def build_sam_vit_l(checkpoint=None):
-    return _build_sam(
-        encoder_embed_dim=1024,
-        encoder_depth=24,
-        encoder_num_heads=16,
-        encoder_global_attn_indexes=[5, 11, 17, 23],
-        checkpoint=checkpoint,
-    )
-
-
-def build_sam_vit_b(checkpoint=None):
-    return _build_sam(
-        encoder_embed_dim=768,
-        encoder_depth=12,
-        encoder_num_heads=12,
-        encoder_global_attn_indexes=[2, 5, 8, 11],
-        checkpoint=checkpoint,
-    )
-
-
-sam_model_registry = {
-    "default": build_sam_vit_h,
-    "vit_h": build_sam_vit_h,
-    "vit_l": build_sam_vit_l,
-    "vit_b": build_sam_vit_b,
-}
-
-
-def _build_sam(
-    encoder_embed_dim,
-    encoder_depth,
-    encoder_num_heads,
-    encoder_global_attn_indexes,
-    checkpoint=None,
-):
-    prompt_embed_dim = 256
-    image_size = 1024
-    vit_patch_size = 16
-    image_embedding_size = image_size // vit_patch_size
-    sam = Sam(
-        image_encoder=ImageEncoderViT(
-            depth=encoder_depth,
-            embed_dim=encoder_embed_dim,
-            img_size=image_size,
-            mlp_ratio=4,
-            norm_layer=partial(torch.nn.LayerNorm, eps=1e-6),
-            num_heads=encoder_num_heads,
-            patch_size=vit_patch_size,
-            qkv_bias=True,
-            use_rel_pos=True,
-            global_attn_indexes=encoder_global_attn_indexes,
-            window_size=14,
-            out_chans=prompt_embed_dim,
-        ),
-        prompt_encoder=PromptEncoder(
-            embed_dim=prompt_embed_dim,
-            image_embedding_size=(image_embedding_size, image_embedding_size),
-            input_image_size=(image_size, image_size),
-            mask_in_chans=16,
-        ),
-        mask_decoder=MaskDecoder(
-            num_multimask_outputs=3,
-            transformer=TwoWayTransformer(
-                depth=2,
-                embedding_dim=prompt_embed_dim,
-                mlp_dim=2048,
-                num_heads=8,
-            ),
-            transformer_dim=prompt_embed_dim,
-            iou_head_depth=3,
-            iou_head_hidden_dim=256,
-        ),
-        pixel_mean=[123.675, 116.28, 103.53],
-        pixel_std=[58.395, 57.12, 57.375],
-    )
-    sam.eval()
-    if checkpoint is not None:
-        with open(checkpoint, "rb") as f:
-            state_dict = torch.load(f)
-        sam.load_state_dict(state_dict)
-    return sam

segment_anything/.ipynb_checkpoints/predictor-checkpoint.py

@@ -1,269 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import numpy as np
-import torch
-
-from segment_anything.modeling import Sam
-
-from typing import Optional, Tuple
-
-from .utils.transforms import ResizeLongestSide
-
-
-class SamPredictor:
-    def __init__(
-        self,
-        sam_model: Sam,
-    ) -> None:
-        """
-        Uses SAM to calculate the image embedding for an image, and then
-        allow repeated, efficient mask prediction given prompts.
-
-        Arguments:
-          sam_model (Sam): The model to use for mask prediction.
-        """
-        super().__init__()
-        self.model = sam_model
-        self.transform = ResizeLongestSide(sam_model.image_encoder.img_size)
-        self.reset_image()
-
-    def set_image(
-        self,
-        image: np.ndarray,
-        image_format: str = "RGB",
-    ) -> None:
-        """
-        Calculates the image embeddings for the provided image, allowing
-        masks to be predicted with the 'predict' method.
-
-        Arguments:
-          image (np.ndarray): The image for calculating masks. Expects an
-            image in HWC uint8 format, with pixel values in [0, 255].
-          image_format (str): The color format of the image, in ['RGB', 'BGR'].
-        """
-        assert image_format in [
-            "RGB",
-            "BGR",
-        ], f"image_format must be in ['RGB', 'BGR'], is {image_format}."
-        if image_format != self.model.image_format:
-            image = image[..., ::-1]
-
-        # Transform the image to the form expected by the model
-        input_image = self.transform.apply_image(image)
-        input_image_torch = torch.as_tensor(input_image, device=self.device)
-        input_image_torch = input_image_torch.permute(2, 0, 1).contiguous()[None, :, :, :]
-
-        self.set_torch_image(input_image_torch, image.shape[:2])
-
-    @torch.no_grad()
-    def set_torch_image(
-        self,
-        transformed_image: torch.Tensor,
-        original_image_size: Tuple[int, ...],
-    ) -> None:
-        """
-        Calculates the image embeddings for the provided image, allowing
-        masks to be predicted with the 'predict' method. Expects the input
-        image to be already transformed to the format expected by the model.
-
-        Arguments:
-          transformed_image (torch.Tensor): The input image, with shape
-            1x3xHxW, which has been transformed with ResizeLongestSide.
-          original_image_size (tuple(int, int)): The size of the image
-            before transformation, in (H, W) format.
-        """
-        assert (
-            len(transformed_image.shape) == 4
-            and transformed_image.shape[1] == 3
-            and max(*transformed_image.shape[2:]) == self.model.image_encoder.img_size
-        ), f"set_torch_image input must be BCHW with long side {self.model.image_encoder.img_size}."
-        self.reset_image()
-
-        self.original_size = original_image_size
-        self.input_size = tuple(transformed_image.shape[-2:])
-        input_image = self.model.preprocess(transformed_image)
-        self.features = self.model.image_encoder(input_image)
-        self.is_image_set = True
-
-    def predict(
-        self,
-        point_coords: Optional[np.ndarray] = None,
-        point_labels: Optional[np.ndarray] = None,
-        box: Optional[np.ndarray] = None,
-        mask_input: Optional[np.ndarray] = None,
-        multimask_output: bool = True,
-        return_logits: bool = False,
-    ) -> Tuple[np.ndarray, np.ndarray, np.ndarray]:
-        """
-        Predict masks for the given input prompts, using the currently set image.
-
-        Arguments:
-          point_coords (np.ndarray or None): A Nx2 array of point prompts to the
-            model. Each point is in (X,Y) in pixels.
-          point_labels (np.ndarray or None): A length N array of labels for the
-            point prompts. 1 indicates a foreground point and 0 indicates a
-            background point.
-          box (np.ndarray or None): A length 4 array given a box prompt to the
-            model, in XYXY format.
-          mask_input (np.ndarray): A low resolution mask input to the model, typically
-            coming from a previous prediction iteration. Has form 1xHxW, where
-            for SAM, H=W=256.
-          multimask_output (bool): If true, the model will return three masks.
-            For ambiguous input prompts (such as a single click), this will often
-            produce better masks than a single prediction. If only a single
-            mask is needed, the model's predicted quality score can be used
-            to select the best mask. For non-ambiguous prompts, such as multiple
-            input prompts, multimask_output=False can give better results.
-          return_logits (bool): If true, returns un-thresholded masks logits
-            instead of a binary mask.
-
-        Returns:
-          (np.ndarray): The output masks in CxHxW format, where C is the
-            number of masks, and (H, W) is the original image size.
-          (np.ndarray): An array of length C containing the model's
-            predictions for the quality of each mask.
-          (np.ndarray): An array of shape CxHxW, where C is the number
-            of masks and H=W=256. These low resolution logits can be passed to
-            a subsequent iteration as mask input.
-        """
-        if not self.is_image_set:
-            raise RuntimeError("An image must be set with .set_image(...) before mask prediction.")
-
-        # Transform input prompts
-        coords_torch, labels_torch, box_torch, mask_input_torch = None, None, None, None
-        if point_coords is not None:
-            assert (
-                point_labels is not None
-            ), "point_labels must be supplied if point_coords is supplied."
-            point_coords = self.transform.apply_coords(point_coords, self.original_size)
-            coords_torch = torch.as_tensor(point_coords, dtype=torch.float, device=self.device)
-            labels_torch = torch.as_tensor(point_labels, dtype=torch.int, device=self.device)
-            coords_torch, labels_torch = coords_torch[None, :, :], labels_torch[None, :]
-        if box is not None:
-            box = self.transform.apply_boxes(box, self.original_size)
-            box_torch = torch.as_tensor(box, dtype=torch.float, device=self.device)
-            box_torch = box_torch[None, :]
-        if mask_input is not None:
-            mask_input_torch = torch.as_tensor(mask_input, dtype=torch.float, device=self.device)
-            mask_input_torch = mask_input_torch[None, :, :, :]
-
-        masks, iou_predictions, low_res_masks = self.predict_torch(
-            coords_torch,
-            labels_torch,
-            box_torch,
-            mask_input_torch,
-            multimask_output,
-            return_logits=return_logits,
-        )
-
-        masks_np = masks[0].detach().cpu().numpy()
-        iou_predictions_np = iou_predictions[0].detach().cpu().numpy()
-        low_res_masks_np = low_res_masks[0].detach().cpu().numpy()
-        return masks_np, iou_predictions_np, low_res_masks_np
-
-    @torch.no_grad()
-    def predict_torch(
-        self,
-        point_coords: Optional[torch.Tensor],
-        point_labels: Optional[torch.Tensor],
-        boxes: Optional[torch.Tensor] = None,
-        mask_input: Optional[torch.Tensor] = None,
-        multimask_output: bool = True,
-        return_logits: bool = False,
-    ) -> Tuple[torch.Tensor, torch.Tensor, torch.Tensor]:
-        """
-        Predict masks for the given input prompts, using the currently set image.
-        Input prompts are batched torch tensors and are expected to already be
-        transformed to the input frame using ResizeLongestSide.
-
-        Arguments:
-          point_coords (torch.Tensor or None): A BxNx2 array of point prompts to the
-            model. Each point is in (X,Y) in pixels.
-          point_labels (torch.Tensor or None): A BxN array of labels for the
-            point prompts. 1 indicates a foreground point and 0 indicates a
-            background point.
-          boxes (np.ndarray or None): A Bx4 array given a box prompt to the
-            model, in XYXY format.
-          mask_input (np.ndarray): A low resolution mask input to the model, typically
-            coming from a previous prediction iteration. Has form Bx1xHxW, where
-            for SAM, H=W=256. Masks returned by a previous iteration of the
-            predict method do not need further transformation.
-          multimask_output (bool): If true, the model will return three masks.
-            For ambiguous input prompts (such as a single click), this will often
-            produce better masks than a single prediction. If only a single
-            mask is needed, the model's predicted quality score can be used
-            to select the best mask. For non-ambiguous prompts, such as multiple
-            input prompts, multimask_output=False can give better results.
-          return_logits (bool): If true, returns un-thresholded masks logits
-            instead of a binary mask.
-
-        Returns:
-          (torch.Tensor): The output masks in BxCxHxW format, where C is the
-            number of masks, and (H, W) is the original image size.
-          (torch.Tensor): An array of shape BxC containing the model's
-            predictions for the quality of each mask.
-          (torch.Tensor): An array of shape BxCxHxW, where C is the number
-            of masks and H=W=256. These low res logits can be passed to
-            a subsequent iteration as mask input.
-        """
-        if not self.is_image_set:
-            raise RuntimeError("An image must be set with .set_image(...) before mask prediction.")
-
-        if point_coords is not None:
-            points = (point_coords, point_labels)
-        else:
-            points = None
-
-        # Embed prompts
-        sparse_embeddings, dense_embeddings = self.model.prompt_encoder(
-            points=points,
-            boxes=boxes,
-            masks=mask_input,
-        )
-
-        # Predict masks
-        low_res_masks, iou_predictions = self.model.mask_decoder(
-            image_embeddings=self.features,
-            image_pe=self.model.prompt_encoder.get_dense_pe(),
-            sparse_prompt_embeddings=sparse_embeddings,
-            dense_prompt_embeddings=dense_embeddings,
-            multimask_output=multimask_output,
-        )
-
-        # Upscale the masks to the original image resolution
-        masks = self.model.postprocess_masks(low_res_masks, self.input_size, self.original_size)
-
-        if not return_logits:
-            masks = masks > self.model.mask_threshold
-
-        return masks, iou_predictions, low_res_masks
-
-    def get_image_embedding(self) -> torch.Tensor:
-        """
-        Returns the image embeddings for the currently set image, with
-        shape 1xCxHxW, where C is the embedding dimension and (H,W) are
-        the embedding spatial dimension of SAM (typically C=256, H=W=64).
-        """
-        if not self.is_image_set:
-            raise RuntimeError(
-                "An image must be set with .set_image(...) to generate an embedding."
-            )
-        assert self.features is not None, "Features must exist if an image has been set."
-        return self.features
-
-    @property
-    def device(self) -> torch.device:
-        return self.model.device
-
-    def reset_image(self) -> None:
-        """Resets the currently set image."""
-        self.is_image_set = False
-        self.features = None
-        self.orig_h = None
-        self.orig_w = None
-        self.input_h = None
-        self.input_w = None

segment_anything/modeling/.ipynb_checkpoints/__init__-checkpoint.py

@@ -1,11 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-from .sam import Sam
-from .image_encoder import ImageEncoderViT
-from .mask_decoder import MaskDecoder
-from .prompt_encoder import PromptEncoder
-from .transformer import TwoWayTransformer

segment_anything/modeling/.ipynb_checkpoints/common-checkpoint.py

@@ -1,43 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import torch
-import torch.nn as nn
-
-from typing import Type
-
-
-class MLPBlock(nn.Module):
-    def __init__(
-        self,
-        embedding_dim: int,
-        mlp_dim: int,
-        act: Type[nn.Module] = nn.GELU,
-    ) -> None:
-        super().__init__()
-        self.lin1 = nn.Linear(embedding_dim, mlp_dim)
-        self.lin2 = nn.Linear(mlp_dim, embedding_dim)
-        self.act = act()
-
-    def forward(self, x: torch.Tensor) -> torch.Tensor:
-        return self.lin2(self.act(self.lin1(x)))
-
-
-# From https://github.com/facebookresearch/detectron2/blob/main/detectron2/layers/batch_norm.py # noqa
-# Itself from https://github.com/facebookresearch/ConvNeXt/blob/d1fa8f6fef0a165b27399986cc2bdacc92777e40/models/convnext.py#L119  # noqa
-class LayerNorm2d(nn.Module):
-    def __init__(self, num_channels: int, eps: float = 1e-6) -> None:
-        super().__init__()
-        self.weight = nn.Parameter(torch.ones(num_channels))
-        self.bias = nn.Parameter(torch.zeros(num_channels))
-        self.eps = eps
-
-    def forward(self, x: torch.Tensor) -> torch.Tensor:
-        u = x.mean(1, keepdim=True)
-        s = (x - u).pow(2).mean(1, keepdim=True)
-        x = (x - u) / torch.sqrt(s + self.eps)
-        x = self.weight[:, None, None] * x + self.bias[:, None, None]
-        return x

segment_anything/modeling/.ipynb_checkpoints/image_encoder-checkpoint.py

@@ -1,395 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import torch
-import torch.nn as nn
-import torch.nn.functional as F
-
-from typing import Optional, Tuple, Type
-
-from .common import LayerNorm2d, MLPBlock
-
-
-# This class and its supporting functions below lightly adapted from the ViTDet backbone available at: https://github.com/facebookresearch/detectron2/blob/main/detectron2/modeling/backbone/vit.py # noqa
-class ImageEncoderViT(nn.Module):
-    def __init__(
-        self,
-        img_size: int = 1024,
-        patch_size: int = 16,
-        in_chans: int = 3,
-        embed_dim: int = 768,
-        depth: int = 12,
-        num_heads: int = 12,
-        mlp_ratio: float = 4.0,
-        out_chans: int = 256,
-        qkv_bias: bool = True,
-        norm_layer: Type[nn.Module] = nn.LayerNorm,
-        act_layer: Type[nn.Module] = nn.GELU,
-        use_abs_pos: bool = True,
-        use_rel_pos: bool = False,
-        rel_pos_zero_init: bool = True,
-        window_size: int = 0,
-        global_attn_indexes: Tuple[int, ...] = (),
-    ) -> None:
-        """
-        Args:
-            img_size (int): Input image size.
-            patch_size (int): Patch size.
-            in_chans (int): Number of input image channels.
-            embed_dim (int): Patch embedding dimension.
-            depth (int): Depth of ViT.
-            num_heads (int): Number of attention heads in each ViT block.
-            mlp_ratio (float): Ratio of mlp hidden dim to embedding dim.
-            qkv_bias (bool): If True, add a learnable bias to query, key, value.
-            norm_layer (nn.Module): Normalization layer.
-            act_layer (nn.Module): Activation layer.
-            use_abs_pos (bool): If True, use absolute positional embeddings.
-            use_rel_pos (bool): If True, add relative positional embeddings to the attention map.
-            rel_pos_zero_init (bool): If True, zero initialize relative positional parameters.
-            window_size (int): Window size for window attention blocks.
-            global_attn_indexes (list): Indexes for blocks using global attention.
-        """
-        super().__init__()
-        self.img_size = img_size
-
-        self.patch_embed = PatchEmbed(
-            kernel_size=(patch_size, patch_size),
-            stride=(patch_size, patch_size),
-            in_chans=in_chans,
-            embed_dim=embed_dim,
-        )
-
-        self.pos_embed: Optional[nn.Parameter] = None
-        if use_abs_pos:
-            # Initialize absolute positional embedding with pretrain image size.
-            self.pos_embed = nn.Parameter(
-                torch.zeros(1, img_size // patch_size, img_size // patch_size, embed_dim)
-            )
-
-        self.blocks = nn.ModuleList()
-        for i in range(depth):
-            block = Block(
-                dim=embed_dim,
-                num_heads=num_heads,
-                mlp_ratio=mlp_ratio,
-                qkv_bias=qkv_bias,
-                norm_layer=norm_layer,
-                act_layer=act_layer,
-                use_rel_pos=use_rel_pos,
-                rel_pos_zero_init=rel_pos_zero_init,
-                window_size=window_size if i not in global_attn_indexes else 0,
-                input_size=(img_size // patch_size, img_size // patch_size),
-            )
-            self.blocks.append(block)
-
-        self.neck = nn.Sequential(
-            nn.Conv2d(
-                embed_dim,
-                out_chans,
-                kernel_size=1,
-                bias=False,
-            ),
-            LayerNorm2d(out_chans),
-            nn.Conv2d(
-                out_chans,
-                out_chans,
-                kernel_size=3,
-                padding=1,
-                bias=False,
-            ),
-            LayerNorm2d(out_chans),
-        )
-
-    def forward(self, x: torch.Tensor) -> torch.Tensor:
-        x = self.patch_embed(x)
-        if self.pos_embed is not None:
-            x = x + self.pos_embed
-
-        for blk in self.blocks:
-            x = blk(x)
-
-        x = self.neck(x.permute(0, 3, 1, 2))
-
-        return x
-
-
-class Block(nn.Module):
-    """Transformer blocks with support of window attention and residual propagation blocks"""
-
-    def __init__(
-        self,
-        dim: int,
-        num_heads: int,
-        mlp_ratio: float = 4.0,
-        qkv_bias: bool = True,
-        norm_layer: Type[nn.Module] = nn.LayerNorm,
-        act_layer: Type[nn.Module] = nn.GELU,
-        use_rel_pos: bool = False,
-        rel_pos_zero_init: bool = True,
-        window_size: int = 0,
-        input_size: Optional[Tuple[int, int]] = None,
-    ) -> None:
-        """
-        Args:
-            dim (int): Number of input channels.
-            num_heads (int): Number of attention heads in each ViT block.
-            mlp_ratio (float): Ratio of mlp hidden dim to embedding dim.
-            qkv_bias (bool): If True, add a learnable bias to query, key, value.
-            norm_layer (nn.Module): Normalization layer.
-            act_layer (nn.Module): Activation layer.
-            use_rel_pos (bool): If True, add relative positional embeddings to the attention map.
-            rel_pos_zero_init (bool): If True, zero initialize relative positional parameters.
-            window_size (int): Window size for window attention blocks. If it equals 0, then
-                use global attention.
-            input_size (tuple(int, int) or None): Input resolution for calculating the relative
-                positional parameter size.
-        """
-        super().__init__()
-        self.norm1 = norm_layer(dim)
-        self.attn = Attention(
-            dim,
-            num_heads=num_heads,
-            qkv_bias=qkv_bias,
-            use_rel_pos=use_rel_pos,
-            rel_pos_zero_init=rel_pos_zero_init,
-            input_size=input_size if window_size == 0 else (window_size, window_size),
-        )
-
-        self.norm2 = norm_layer(dim)
-        self.mlp = MLPBlock(embedding_dim=dim, mlp_dim=int(dim * mlp_ratio), act=act_layer)
-
-        self.window_size = window_size
-
-    def forward(self, x: torch.Tensor) -> torch.Tensor:
-        shortcut = x
-        x = self.norm1(x)
-        # Window partition
-        if self.window_size > 0:
-            H, W = x.shape[1], x.shape[2]
-            x, pad_hw = window_partition(x, self.window_size)
-
-        x = self.attn(x)
-        # Reverse window partition
-        if self.window_size > 0:
-            x = window_unpartition(x, self.window_size, pad_hw, (H, W))
-
-        x = shortcut + x
-        x = x + self.mlp(self.norm2(x))
-
-        return x
-
-
-class Attention(nn.Module):
-    """Multi-head Attention block with relative position embeddings."""
-
-    def __init__(
-        self,
-        dim: int,
-        num_heads: int = 8,
-        qkv_bias: bool = True,
-        use_rel_pos: bool = False,
-        rel_pos_zero_init: bool = True,
-        input_size: Optional[Tuple[int, int]] = None,
-    ) -> None:
-        """
-        Args:
-            dim (int): Number of input channels.
-            num_heads (int): Number of attention heads.
-            qkv_bias (bool):  If True, add a learnable bias to query, key, value.
-            rel_pos (bool): If True, add relative positional embeddings to the attention map.
-            rel_pos_zero_init (bool): If True, zero initialize relative positional parameters.
-            input_size (tuple(int, int) or None): Input resolution for calculating the relative
-                positional parameter size.
-        """
-        super().__init__()
-        self.num_heads = num_heads
-        head_dim = dim // num_heads
-        self.scale = head_dim**-0.5
-
-        self.qkv = nn.Linear(dim, dim * 3, bias=qkv_bias)
-        self.proj = nn.Linear(dim, dim)
-
-        self.use_rel_pos = use_rel_pos
-        if self.use_rel_pos:
-            assert (
-                input_size is not None
-            ), "Input size must be provided if using relative positional encoding."
-            # initialize relative positional embeddings
-            self.rel_pos_h = nn.Parameter(torch.zeros(2 * input_size[0] - 1, head_dim))
-            self.rel_pos_w = nn.Parameter(torch.zeros(2 * input_size[1] - 1, head_dim))
-
-    def forward(self, x: torch.Tensor) -> torch.Tensor:
-        B, H, W, _ = x.shape
-        # qkv with shape (3, B, nHead, H * W, C)
-        qkv = self.qkv(x).reshape(B, H * W, 3, self.num_heads, -1).permute(2, 0, 3, 1, 4)
-        # q, k, v with shape (B * nHead, H * W, C)
-        q, k, v = qkv.reshape(3, B * self.num_heads, H * W, -1).unbind(0)
-
-        attn = (q * self.scale) @ k.transpose(-2, -1)
-
-        if self.use_rel_pos:
-            attn = add_decomposed_rel_pos(attn, q, self.rel_pos_h, self.rel_pos_w, (H, W), (H, W))
-
-        attn = attn.softmax(dim=-1)
-        x = (attn @ v).view(B, self.num_heads, H, W, -1).permute(0, 2, 3, 1, 4).reshape(B, H, W, -1)
-        x = self.proj(x)
-
-        return x
-
-
-def window_partition(x: torch.Tensor, window_size: int) -> Tuple[torch.Tensor, Tuple[int, int]]:
-    """
-    Partition into non-overlapping windows with padding if needed.
-    Args:
-        x (tensor): input tokens with [B, H, W, C].
-        window_size (int): window size.
-
-    Returns:
-        windows: windows after partition with [B * num_windows, window_size, window_size, C].
-        (Hp, Wp): padded height and width before partition
-    """
-    B, H, W, C = x.shape
-
-    pad_h = (window_size - H % window_size) % window_size
-    pad_w = (window_size - W % window_size) % window_size
-    if pad_h > 0 or pad_w > 0:
-        x = F.pad(x, (0, 0, 0, pad_w, 0, pad_h))
-    Hp, Wp = H + pad_h, W + pad_w
-
-    x = x.view(B, Hp // window_size, window_size, Wp // window_size, window_size, C)
-    windows = x.permute(0, 1, 3, 2, 4, 5).contiguous().view(-1, window_size, window_size, C)
-    return windows, (Hp, Wp)
-
-
-def window_unpartition(
-    windows: torch.Tensor, window_size: int, pad_hw: Tuple[int, int], hw: Tuple[int, int]
-) -> torch.Tensor:
-    """
-    Window unpartition into original sequences and removing padding.
-    Args:
-        windows (tensor): input tokens with [B * num_windows, window_size, window_size, C].
-        window_size (int): window size.
-        pad_hw (Tuple): padded height and width (Hp, Wp).
-        hw (Tuple): original height and width (H, W) before padding.
-
-    Returns:
-        x: unpartitioned sequences with [B, H, W, C].
-    """
-    Hp, Wp = pad_hw
-    H, W = hw
-    B = windows.shape[0] // (Hp * Wp // window_size // window_size)
-    x = windows.view(B, Hp // window_size, Wp // window_size, window_size, window_size, -1)
-    x = x.permute(0, 1, 3, 2, 4, 5).contiguous().view(B, Hp, Wp, -1)
-
-    if Hp > H or Wp > W:
-        x = x[:, :H, :W, :].contiguous()
-    return x
-
-
-def get_rel_pos(q_size: int, k_size: int, rel_pos: torch.Tensor) -> torch.Tensor:
-    """
-    Get relative positional embeddings according to the relative positions of
-        query and key sizes.
-    Args:
-        q_size (int): size of query q.
-        k_size (int): size of key k.
-        rel_pos (Tensor): relative position embeddings (L, C).
-
-    Returns:
-        Extracted positional embeddings according to relative positions.
-    """
-    max_rel_dist = int(2 * max(q_size, k_size) - 1)
-    # Interpolate rel pos if needed.
-    if rel_pos.shape[0] != max_rel_dist:
-        # Interpolate rel pos.
-        rel_pos_resized = F.interpolate(
-            rel_pos.reshape(1, rel_pos.shape[0], -1).permute(0, 2, 1),
-            size=max_rel_dist,
-            mode="linear",
-        )
-        rel_pos_resized = rel_pos_resized.reshape(-1, max_rel_dist).permute(1, 0)
-    else:
-        rel_pos_resized = rel_pos
-
-    # Scale the coords with short length if shapes for q and k are different.
-    q_coords = torch.arange(q_size)[:, None] * max(k_size / q_size, 1.0)
-    k_coords = torch.arange(k_size)[None, :] * max(q_size / k_size, 1.0)
-    relative_coords = (q_coords - k_coords) + (k_size - 1) * max(q_size / k_size, 1.0)
-
-    return rel_pos_resized[relative_coords.long()]
-
-
-def add_decomposed_rel_pos(
-    attn: torch.Tensor,
-    q: torch.Tensor,
-    rel_pos_h: torch.Tensor,
-    rel_pos_w: torch.Tensor,
-    q_size: Tuple[int, int],
-    k_size: Tuple[int, int],
-) -> torch.Tensor:
-    """
-    Calculate decomposed Relative Positional Embeddings from :paper:`mvitv2`.
-    https://github.com/facebookresearch/mvit/blob/19786631e330df9f3622e5402b4a419a263a2c80/mvit/models/attention.py   # noqa B950
-    Args:
-        attn (Tensor): attention map.
-        q (Tensor): query q in the attention layer with shape (B, q_h * q_w, C).
-        rel_pos_h (Tensor): relative position embeddings (Lh, C) for height axis.
-        rel_pos_w (Tensor): relative position embeddings (Lw, C) for width axis.
-        q_size (Tuple): spatial sequence size of query q with (q_h, q_w).
-        k_size (Tuple): spatial sequence size of key k with (k_h, k_w).
-
-    Returns:
-        attn (Tensor): attention map with added relative positional embeddings.
-    """
-    q_h, q_w = q_size
-    k_h, k_w = k_size
-    Rh = get_rel_pos(q_h, k_h, rel_pos_h)
-    Rw = get_rel_pos(q_w, k_w, rel_pos_w)
-
-    B, _, dim = q.shape
-    r_q = q.reshape(B, q_h, q_w, dim)
-    rel_h = torch.einsum("bhwc,hkc->bhwk", r_q, Rh)
-    rel_w = torch.einsum("bhwc,wkc->bhwk", r_q, Rw)
-
-    attn = (
-        attn.view(B, q_h, q_w, k_h, k_w) + rel_h[:, :, :, :, None] + rel_w[:, :, :, None, :]
-    ).view(B, q_h * q_w, k_h * k_w)
-
-    return attn
-
-
-class PatchEmbed(nn.Module):
-    """
-    Image to Patch Embedding.
-    """
-
-    def __init__(
-        self,
-        kernel_size: Tuple[int, int] = (16, 16),
-        stride: Tuple[int, int] = (16, 16),
-        padding: Tuple[int, int] = (0, 0),
-        in_chans: int = 3,
-        embed_dim: int = 768,
-    ) -> None:
-        """
-        Args:
-            kernel_size (Tuple): kernel size of the projection layer.
-            stride (Tuple): stride of the projection layer.
-            padding (Tuple): padding size of the projection layer.
-            in_chans (int): Number of input image channels.
-            embed_dim (int): Patch embedding dimension.
-        """
-        super().__init__()
-
-        self.proj = nn.Conv2d(
-            in_chans, embed_dim, kernel_size=kernel_size, stride=stride, padding=padding
-        )
-
-    def forward(self, x: torch.Tensor) -> torch.Tensor:
-        x = self.proj(x)
-        # B C H W -> B H W C
-        x = x.permute(0, 2, 3, 1)
-        return x

segment_anything/modeling/.ipynb_checkpoints/mask_decoder-checkpoint.py

@@ -1,176 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import torch
-from torch import nn
-from torch.nn import functional as F
-
-from typing import List, Tuple, Type
-
-from .common import LayerNorm2d
-
-
-class MaskDecoder(nn.Module):
-    def __init__(
-        self,
-        *,
-        transformer_dim: int,
-        transformer: nn.Module,
-        num_multimask_outputs: int = 3,
-        activation: Type[nn.Module] = nn.GELU,
-        iou_head_depth: int = 3,
-        iou_head_hidden_dim: int = 256,
-    ) -> None:
-        """
-        Predicts masks given an image and prompt embeddings, using a
-        transformer architecture.
-
-        Arguments:
-          transformer_dim (int): the channel dimension of the transformer
-          transformer (nn.Module): the transformer used to predict masks
-          num_multimask_outputs (int): the number of masks to predict
-            when disambiguating masks
-          activation (nn.Module): the type of activation to use when
-            upscaling masks
-          iou_head_depth (int): the depth of the MLP used to predict
-            mask quality
-          iou_head_hidden_dim (int): the hidden dimension of the MLP
-            used to predict mask quality
-        """
-        super().__init__()
-        self.transformer_dim = transformer_dim
-        self.transformer = transformer
-
-        self.num_multimask_outputs = num_multimask_outputs
-
-        self.iou_token = nn.Embedding(1, transformer_dim)
-        self.num_mask_tokens = num_multimask_outputs + 1
-        self.mask_tokens = nn.Embedding(self.num_mask_tokens, transformer_dim)
-
-        self.output_upscaling = nn.Sequential(
-            nn.ConvTranspose2d(transformer_dim, transformer_dim // 4, kernel_size=2, stride=2),
-            LayerNorm2d(transformer_dim // 4),
-            activation(),
-            nn.ConvTranspose2d(transformer_dim // 4, transformer_dim // 8, kernel_size=2, stride=2),
-            activation(),
-        )
-        self.output_hypernetworks_mlps = nn.ModuleList(
-            [
-                MLP(transformer_dim, transformer_dim, transformer_dim // 8, 3)
-                for i in range(self.num_mask_tokens)
-            ]
-        )
-
-        self.iou_prediction_head = MLP(
-            transformer_dim, iou_head_hidden_dim, self.num_mask_tokens, iou_head_depth
-        )
-
-    def forward(
-        self,
-        image_embeddings: torch.Tensor,
-        image_pe: torch.Tensor,
-        sparse_prompt_embeddings: torch.Tensor,
-        dense_prompt_embeddings: torch.Tensor,
-        multimask_output: bool,
-    ) -> Tuple[torch.Tensor, torch.Tensor]:
-        """
-        Predict masks given image and prompt embeddings.
-
-        Arguments:
-          image_embeddings (torch.Tensor): the embeddings from the image encoder
-          image_pe (torch.Tensor): positional encoding with the shape of image_embeddings
-          sparse_prompt_embeddings (torch.Tensor): the embeddings of the points and boxes
-          dense_prompt_embeddings (torch.Tensor): the embeddings of the mask inputs
-          multimask_output (bool): Whether to return multiple masks or a single
-            mask.
-
-        Returns:
-          torch.Tensor: batched predicted masks
-          torch.Tensor: batched predictions of mask quality
-        """
-        masks, iou_pred = self.predict_masks(
-            image_embeddings=image_embeddings,
-            image_pe=image_pe,
-            sparse_prompt_embeddings=sparse_prompt_embeddings,
-            dense_prompt_embeddings=dense_prompt_embeddings,
-        )
-
-        # Select the correct mask or masks for output
-        if multimask_output:
-            mask_slice = slice(1, None)
-        else:
-            mask_slice = slice(0, 1)
-        masks = masks[:, mask_slice, :, :]
-        iou_pred = iou_pred[:, mask_slice]
-
-        # Prepare output
-        return masks, iou_pred
-
-    def predict_masks(
-        self,
-        image_embeddings: torch.Tensor,
-        image_pe: torch.Tensor,
-        sparse_prompt_embeddings: torch.Tensor,
-        dense_prompt_embeddings: torch.Tensor,
-    ) -> Tuple[torch.Tensor, torch.Tensor]:
-        """Predicts masks. See 'forward' for more details."""
-        # Concatenate output tokens
-        output_tokens = torch.cat([self.iou_token.weight, self.mask_tokens.weight], dim=0)
-        output_tokens = output_tokens.unsqueeze(0).expand(sparse_prompt_embeddings.size(0), -1, -1)
-        tokens = torch.cat((output_tokens, sparse_prompt_embeddings), dim=1)
-
-        # Expand per-image data in batch direction to be per-mask
-        src = torch.repeat_interleave(image_embeddings, tokens.shape[0], dim=0)
-        src = src + dense_prompt_embeddings
-        pos_src = torch.repeat_interleave(image_pe, tokens.shape[0], dim=0)
-        b, c, h, w = src.shape
-
-        # Run the transformer
-        hs, src = self.transformer(src, pos_src, tokens)
-        iou_token_out = hs[:, 0, :]
-        mask_tokens_out = hs[:, 1 : (1 + self.num_mask_tokens), :]
-
-        # Upscale mask embeddings and predict masks using the mask tokens
-        src = src.transpose(1, 2).view(b, c, h, w)
-        upscaled_embedding = self.output_upscaling(src)
-        hyper_in_list: List[torch.Tensor] = []
-        for i in range(self.num_mask_tokens):
-            hyper_in_list.append(self.output_hypernetworks_mlps[i](mask_tokens_out[:, i, :]))
-        hyper_in = torch.stack(hyper_in_list, dim=1)
-        b, c, h, w = upscaled_embedding.shape
-        masks = (hyper_in @ upscaled_embedding.view(b, c, h * w)).view(b, -1, h, w)
-
-        # Generate mask quality predictions
-        iou_pred = self.iou_prediction_head(iou_token_out)
-
-        return masks, iou_pred
-
-
-# Lightly adapted from
-# https://github.com/facebookresearch/MaskFormer/blob/main/mask_former/modeling/transformer/transformer_predictor.py # noqa
-class MLP(nn.Module):
-    def __init__(
-        self,
-        input_dim: int,
-        hidden_dim: int,
-        output_dim: int,
-        num_layers: int,
-        sigmoid_output: bool = False,
-    ) -> None:
-        super().__init__()
-        self.num_layers = num_layers
-        h = [hidden_dim] * (num_layers - 1)
-        self.layers = nn.ModuleList(
-            nn.Linear(n, k) for n, k in zip([input_dim] + h, h + [output_dim])
-        )
-        self.sigmoid_output = sigmoid_output
-
-    def forward(self, x):
-        for i, layer in enumerate(self.layers):
-            x = F.relu(layer(x)) if i < self.num_layers - 1 else layer(x)
-        if self.sigmoid_output:
-            x = F.sigmoid(x)
-        return x

segment_anything/modeling/.ipynb_checkpoints/prompt_encoder-checkpoint.py

@@ -1,214 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import numpy as np
-import torch
-from torch import nn
-
-from typing import Any, Optional, Tuple, Type
-
-from .common import LayerNorm2d
-
-
-class PromptEncoder(nn.Module):
-    def __init__(
-        self,
-        embed_dim: int,
-        image_embedding_size: Tuple[int, int],
-        input_image_size: Tuple[int, int],
-        mask_in_chans: int,
-        activation: Type[nn.Module] = nn.GELU,
-    ) -> None:
-        """
-        Encodes prompts for input to SAM's mask decoder.
-
-        Arguments:
-          embed_dim (int): The prompts' embedding dimension
-          image_embedding_size (tuple(int, int)): The spatial size of the
-            image embedding, as (H, W).
-          input_image_size (int): The padded size of the image as input
-            to the image encoder, as (H, W).
-          mask_in_chans (int): The number of hidden channels used for
-            encoding input masks.
-          activation (nn.Module): The activation to use when encoding
-            input masks.
-        """
-        super().__init__()
-        self.embed_dim = embed_dim
-        self.input_image_size = input_image_size
-        self.image_embedding_size = image_embedding_size
-        self.pe_layer = PositionEmbeddingRandom(embed_dim // 2)
-
-        self.num_point_embeddings: int = 4  # pos/neg point + 2 box corners
-        point_embeddings = [nn.Embedding(1, embed_dim) for i in range(self.num_point_embeddings)]
-        self.point_embeddings = nn.ModuleList(point_embeddings)
-        self.not_a_point_embed = nn.Embedding(1, embed_dim)
-
-        self.mask_input_size = (4 * image_embedding_size[0], 4 * image_embedding_size[1])
-        self.mask_downscaling = nn.Sequential(
-            nn.Conv2d(1, mask_in_chans // 4, kernel_size=2, stride=2),
-            LayerNorm2d(mask_in_chans // 4),
-            activation(),
-            nn.Conv2d(mask_in_chans // 4, mask_in_chans, kernel_size=2, stride=2),
-            LayerNorm2d(mask_in_chans),
-            activation(),
-            nn.Conv2d(mask_in_chans, embed_dim, kernel_size=1),
-        )
-        self.no_mask_embed = nn.Embedding(1, embed_dim)
-
-    def get_dense_pe(self) -> torch.Tensor:
-        """
-        Returns the positional encoding used to encode point prompts,
-        applied to a dense set of points the shape of the image encoding.
-
-        Returns:
-          torch.Tensor: Positional encoding with shape
-            1x(embed_dim)x(embedding_h)x(embedding_w)
-        """
-        return self.pe_layer(self.image_embedding_size).unsqueeze(0)
-
-    def _embed_points(
-        self,
-        points: torch.Tensor,
-        labels: torch.Tensor,
-        pad: bool,
-    ) -> torch.Tensor:
-        """Embeds point prompts."""
-        points = points + 0.5  # Shift to center of pixel
-        if pad:
-            padding_point = torch.zeros((points.shape[0], 1, 2), device=points.device)
-            padding_label = -torch.ones((labels.shape[0], 1), device=labels.device)
-            points = torch.cat([points, padding_point], dim=1)
-            labels = torch.cat([labels, padding_label], dim=1)
-        point_embedding = self.pe_layer.forward_with_coords(points, self.input_image_size)
-        point_embedding[labels == -1] = 0.0
-        point_embedding[labels == -1] += self.not_a_point_embed.weight
-        point_embedding[labels == 0] += self.point_embeddings[0].weight
-        point_embedding[labels == 1] += self.point_embeddings[1].weight
-        return point_embedding
-
-    def _embed_boxes(self, boxes: torch.Tensor) -> torch.Tensor:
-        """Embeds box prompts."""
-        boxes = boxes + 0.5  # Shift to center of pixel
-        coords = boxes.reshape(-1, 2, 2)
-        corner_embedding = self.pe_layer.forward_with_coords(coords, self.input_image_size)
-        corner_embedding[:, 0, :] += self.point_embeddings[2].weight
-        corner_embedding[:, 1, :] += self.point_embeddings[3].weight
-        return corner_embedding
-
-    def _embed_masks(self, masks: torch.Tensor) -> torch.Tensor:
-        """Embeds mask inputs."""
-        mask_embedding = self.mask_downscaling(masks)
-        return mask_embedding
-
-    def _get_batch_size(
-        self,
-        points: Optional[Tuple[torch.Tensor, torch.Tensor]],
-        boxes: Optional[torch.Tensor],
-        masks: Optional[torch.Tensor],
-    ) -> int:
-        """
-        Gets the batch size of the output given the batch size of the input prompts.
-        """
-        if points is not None:
-            return points[0].shape[0]
-        elif boxes is not None:
-            return boxes.shape[0]
-        elif masks is not None:
-            return masks.shape[0]
-        else:
-            return 1
-
-    def _get_device(self) -> torch.device:
-        return self.point_embeddings[0].weight.device
-
-    def forward(
-        self,
-        points: Optional[Tuple[torch.Tensor, torch.Tensor]],
-        boxes: Optional[torch.Tensor],
-        masks: Optional[torch.Tensor],
-    ) -> Tuple[torch.Tensor, torch.Tensor]:
-        """
-        Embeds different types of prompts, returning both sparse and dense
-        embeddings.
-
-        Arguments:
-          points (tuple(torch.Tensor, torch.Tensor) or none): point coordinates
-            and labels to embed.
-          boxes (torch.Tensor or none): boxes to embed
-          masks (torch.Tensor or none): masks to embed
-
-        Returns:
-          torch.Tensor: sparse embeddings for the points and boxes, with shape
-            BxNx(embed_dim), where N is determined by the number of input points
-            and boxes.
-          torch.Tensor: dense embeddings for the masks, in the shape
-            Bx(embed_dim)x(embed_H)x(embed_W)
-        """
-        bs = self._get_batch_size(points, boxes, masks)
-        sparse_embeddings = torch.empty((bs, 0, self.embed_dim), device=self._get_device())
-        if points is not None:
-            coords, labels = points
-            point_embeddings = self._embed_points(coords, labels, pad=(boxes is None))
-            sparse_embeddings = torch.cat([sparse_embeddings, point_embeddings], dim=1)
-        if boxes is not None:
-            box_embeddings = self._embed_boxes(boxes)
-            sparse_embeddings = torch.cat([sparse_embeddings, box_embeddings], dim=1)
-
-        if masks is not None:
-            dense_embeddings = self._embed_masks(masks)
-        else:
-            dense_embeddings = self.no_mask_embed.weight.reshape(1, -1, 1, 1).expand(
-                bs, -1, self.image_embedding_size[0], self.image_embedding_size[1]
-            )
-
-        return sparse_embeddings, dense_embeddings
-
-
-class PositionEmbeddingRandom(nn.Module):
-    """
-    Positional encoding using random spatial frequencies.
-    """
-
-    def __init__(self, num_pos_feats: int = 64, scale: Optional[float] = None) -> None:
-        super().__init__()
-        if scale is None or scale <= 0.0:
-            scale = 1.0
-        self.register_buffer(
-            "positional_encoding_gaussian_matrix",
-            scale * torch.randn((2, num_pos_feats)),
-        )
-
-    def _pe_encoding(self, coords: torch.Tensor) -> torch.Tensor:
-        """Positionally encode points that are normalized to [0,1]."""
-        # assuming coords are in [0, 1]^2 square and have d_1 x ... x d_n x 2 shape
-        coords = 2 * coords - 1
-        coords = coords @ self.positional_encoding_gaussian_matrix
-        coords = 2 * np.pi * coords
-        # outputs d_1 x ... x d_n x C shape
-        return torch.cat([torch.sin(coords), torch.cos(coords)], dim=-1)
-
-    def forward(self, size: Tuple[int, int]) -> torch.Tensor:
-        """Generate positional encoding for a grid of the specified size."""
-        h, w = size
-        device: Any = self.positional_encoding_gaussian_matrix.device
-        grid = torch.ones((h, w), device=device, dtype=torch.float32)
-        y_embed = grid.cumsum(dim=0) - 0.5
-        x_embed = grid.cumsum(dim=1) - 0.5
-        y_embed = y_embed / h
-        x_embed = x_embed / w
-
-        pe = self._pe_encoding(torch.stack([x_embed, y_embed], dim=-1))
-        return pe.permute(2, 0, 1)  # C x H x W
-
-    def forward_with_coords(
-        self, coords_input: torch.Tensor, image_size: Tuple[int, int]
-    ) -> torch.Tensor:
-        """Positionally encode points that are not normalized to [0,1]."""
-        coords = coords_input.clone()
-        coords[:, :, 0] = coords[:, :, 0] / image_size[1]
-        coords[:, :, 1] = coords[:, :, 1] / image_size[0]
-        return self._pe_encoding(coords.to(torch.float))  # B x N x C

segment_anything/modeling/.ipynb_checkpoints/sam-checkpoint.py

@@ -1,174 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import torch
-from torch import nn
-from torch.nn import functional as F
-
-from typing import Any, Dict, List, Tuple
-
-from .image_encoder import ImageEncoderViT
-from .mask_decoder import MaskDecoder
-from .prompt_encoder import PromptEncoder
-
-
-class Sam(nn.Module):
-    mask_threshold: float = 0.0
-    image_format: str = "RGB"
-
-    def __init__(
-        self,
-        image_encoder: ImageEncoderViT,
-        prompt_encoder: PromptEncoder,
-        mask_decoder: MaskDecoder,
-        pixel_mean: List[float] = [123.675, 116.28, 103.53],
-        pixel_std: List[float] = [58.395, 57.12, 57.375],
-    ) -> None:
-        """
-        SAM predicts object masks from an image and input prompts.
-
-        Arguments:
-          image_encoder (ImageEncoderViT): The backbone used to encode the
-            image into image embeddings that allow for efficient mask prediction.
-          prompt_encoder (PromptEncoder): Encodes various types of input prompts.
-          mask_decoder (MaskDecoder): Predicts masks from the image embeddings
-            and encoded prompts.
-          pixel_mean (list(float)): Mean values for normalizing pixels in the input image.
-          pixel_std (list(float)): Std values for normalizing pixels in the input image.
-        """
-        super().__init__()
-        self.image_encoder = image_encoder
-        self.prompt_encoder = prompt_encoder
-        self.mask_decoder = mask_decoder
-        self.register_buffer("pixel_mean", torch.Tensor(pixel_mean).view(-1, 1, 1), False)
-        self.register_buffer("pixel_std", torch.Tensor(pixel_std).view(-1, 1, 1), False)
-
-    @property
-    def device(self) -> Any:
-        return self.pixel_mean.device
-
-    @torch.no_grad()
-    def forward(
-        self,
-        batched_input: List[Dict[str, Any]],
-        multimask_output: bool,
-    ) -> List[Dict[str, torch.Tensor]]:
-        """
-        Predicts masks end-to-end from provided images and prompts.
-        If prompts are not known in advance, using SamPredictor is
-        recommended over calling the model directly.
-
-        Arguments:
-          batched_input (list(dict)): A list over input images, each a
-            dictionary with the following keys. A prompt key can be
-            excluded if it is not present.
-              'image': The image as a torch tensor in 3xHxW format,
-                already transformed for input to the model.
-              'original_size': (tuple(int, int)) The original size of
-                the image before transformation, as (H, W).
-              'point_coords': (torch.Tensor) Batched point prompts for
-                this image, with shape BxNx2. Already transformed to the
-                input frame of the model.
-              'point_labels': (torch.Tensor) Batched labels for point prompts,
-                with shape BxN.
-              'boxes': (torch.Tensor) Batched box inputs, with shape Bx4.
-                Already transformed to the input frame of the model.
-              'mask_inputs': (torch.Tensor) Batched mask inputs to the model,
-                in the form Bx1xHxW.
-          multimask_output (bool): Whether the model should predict multiple
-            disambiguating masks, or return a single mask.
-
-        Returns:
-          (list(dict)): A list over input images, where each element is
-            as dictionary with the following keys.
-              'masks': (torch.Tensor) Batched binary mask predictions,
-                with shape BxCxHxW, where B is the number of input prompts,
-                C is determined by multimask_output, and (H, W) is the
-                original size of the image.
-              'iou_predictions': (torch.Tensor) The model's predictions
-                of mask quality, in shape BxC.
-              'low_res_logits': (torch.Tensor) Low resolution logits with
-                shape BxCxHxW, where H=W=256. Can be passed as mask input
-                to subsequent iterations of prediction.
-        """
-        input_images = torch.stack([self.preprocess(x["image"]) for x in batched_input], dim=0)
-        image_embeddings = self.image_encoder(input_images)
-
-        outputs = []
-        for image_record, curr_embedding in zip(batched_input, image_embeddings):
-            if "point_coords" in image_record:
-                points = (image_record["point_coords"], image_record["point_labels"])
-            else:
-                points = None
-            sparse_embeddings, dense_embeddings = self.prompt_encoder(
-                points=points,
-                boxes=image_record.get("boxes", None),
-                masks=image_record.get("mask_inputs", None),
-            )
-            low_res_masks, iou_predictions = self.mask_decoder(
-                image_embeddings=curr_embedding.unsqueeze(0),
-                image_pe=self.prompt_encoder.get_dense_pe(),
-                sparse_prompt_embeddings=sparse_embeddings,
-                dense_prompt_embeddings=dense_embeddings,
-                multimask_output=multimask_output,
-            )
-            masks = self.postprocess_masks(
-                low_res_masks,
-                input_size=image_record["image"].shape[-2:],
-                original_size=image_record["original_size"],
-            )
-            masks = masks > self.mask_threshold
-            outputs.append(
-                {
-                    "masks": masks,
-                    "iou_predictions": iou_predictions,
-                    "low_res_logits": low_res_masks,
-                }
-            )
-        return outputs
-
-    def postprocess_masks(
-        self,
-        masks: torch.Tensor,
-        input_size: Tuple[int, ...],
-        original_size: Tuple[int, ...],
-    ) -> torch.Tensor:
-        """
-        Remove padding and upscale masks to the original image size.
-
-        Arguments:
-          masks (torch.Tensor): Batched masks from the mask_decoder,
-            in BxCxHxW format.
-          input_size (tuple(int, int)): The size of the image input to the
-            model, in (H, W) format. Used to remove padding.
-          original_size (tuple(int, int)): The original size of the image
-            before resizing for input to the model, in (H, W) format.
-
-        Returns:
-          (torch.Tensor): Batched masks in BxCxHxW format, where (H, W)
-            is given by original_size.
-        """
-        masks = F.interpolate(
-            masks,
-            (self.image_encoder.img_size, self.image_encoder.img_size),
-            mode="bilinear",
-            align_corners=False,
-        )
-        masks = masks[..., : input_size[0], : input_size[1]]
-        masks = F.interpolate(masks, original_size, mode="bilinear", align_corners=False)
-        return masks
-
-    def preprocess(self, x: torch.Tensor) -> torch.Tensor:
-        """Normalize pixel values and pad to a square input."""
-        # Normalize colors
-        x = (x - self.pixel_mean) / self.pixel_std
-
-        # Pad
-        h, w = x.shape[-2:]
-        padh = self.image_encoder.img_size - h
-        padw = self.image_encoder.img_size - w
-        x = F.pad(x, (0, padw, 0, padh))
-        return x

segment_anything/modeling/.ipynb_checkpoints/transformer-checkpoint.py

@@ -1,240 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import torch
-from torch import Tensor, nn
-
-import math
-from typing import Tuple, Type
-
-from .common import MLPBlock
-
-
-class TwoWayTransformer(nn.Module):
-    def __init__(
-        self,
-        depth: int,
-        embedding_dim: int,
-        num_heads: int,
-        mlp_dim: int,
-        activation: Type[nn.Module] = nn.ReLU,
-        attention_downsample_rate: int = 2,
-    ) -> None:
-        """
-        A transformer decoder that attends to an input image using
-        queries whose positional embedding is supplied.
-
-        Args:
-          depth (int): number of layers in the transformer
-          embedding_dim (int): the channel dimension for the input embeddings
-          num_heads (int): the number of heads for multihead attention. Must
-            divide embedding_dim
-          mlp_dim (int): the channel dimension internal to the MLP block
-          activation (nn.Module): the activation to use in the MLP block
-        """
-        super().__init__()
-        self.depth = depth
-        self.embedding_dim = embedding_dim
-        self.num_heads = num_heads
-        self.mlp_dim = mlp_dim
-        self.layers = nn.ModuleList()
-
-        for i in range(depth):
-            self.layers.append(
-                TwoWayAttentionBlock(
-                    embedding_dim=embedding_dim,
-                    num_heads=num_heads,
-                    mlp_dim=mlp_dim,
-                    activation=activation,
-                    attention_downsample_rate=attention_downsample_rate,
-                    skip_first_layer_pe=(i == 0),
-                )
-            )
-
-        self.final_attn_token_to_image = Attention(
-            embedding_dim, num_heads, downsample_rate=attention_downsample_rate
-        )
-        self.norm_final_attn = nn.LayerNorm(embedding_dim)
-
-    def forward(
-        self,
-        image_embedding: Tensor,
-        image_pe: Tensor,
-        point_embedding: Tensor,
-    ) -> Tuple[Tensor, Tensor]:
-        """
-        Args:
-          image_embedding (torch.Tensor): image to attend to. Should be shape
-            B x embedding_dim x h x w for any h and w.
-          image_pe (torch.Tensor): the positional encoding to add to the image. Must
-            have the same shape as image_embedding.
-          point_embedding (torch.Tensor): the embedding to add to the query points.
-            Must have shape B x N_points x embedding_dim for any N_points.
-
-        Returns:
-          torch.Tensor: the processed point_embedding
-          torch.Tensor: the processed image_embedding
-        """
-        # BxCxHxW -> BxHWxC == B x N_image_tokens x C
-        bs, c, h, w = image_embedding.shape
-        image_embedding = image_embedding.flatten(2).permute(0, 2, 1)
-        image_pe = image_pe.flatten(2).permute(0, 2, 1)
-
-        # Prepare queries
-        queries = point_embedding
-        keys = image_embedding
-
-        # Apply transformer blocks and final layernorm
-        for layer in self.layers:
-            queries, keys = layer(
-                queries=queries,
-                keys=keys,
-                query_pe=point_embedding,
-                key_pe=image_pe,
-            )
-
-        # Apply the final attention layer from the points to the image
-        q = queries + point_embedding
-        k = keys + image_pe
-        attn_out = self.final_attn_token_to_image(q=q, k=k, v=keys)
-        queries = queries + attn_out
-        queries = self.norm_final_attn(queries)
-
-        return queries, keys
-
-
-class TwoWayAttentionBlock(nn.Module):
-    def __init__(
-        self,
-        embedding_dim: int,
-        num_heads: int,
-        mlp_dim: int = 2048,
-        activation: Type[nn.Module] = nn.ReLU,
-        attention_downsample_rate: int = 2,
-        skip_first_layer_pe: bool = False,
-    ) -> None:
-        """
-        A transformer block with four layers: (1) self-attention of sparse
-        inputs, (2) cross attention of sparse inputs to dense inputs, (3) mlp
-        block on sparse inputs, and (4) cross attention of dense inputs to sparse
-        inputs.
-
-        Arguments:
-          embedding_dim (int): the channel dimension of the embeddings
-          num_heads (int): the number of heads in the attention layers
-          mlp_dim (int): the hidden dimension of the mlp block
-          activation (nn.Module): the activation of the mlp block
-          skip_first_layer_pe (bool): skip the PE on the first layer
-        """
-        super().__init__()
-        self.self_attn = Attention(embedding_dim, num_heads)
-        self.norm1 = nn.LayerNorm(embedding_dim)
-
-        self.cross_attn_token_to_image = Attention(
-            embedding_dim, num_heads, downsample_rate=attention_downsample_rate
-        )
-        self.norm2 = nn.LayerNorm(embedding_dim)
-
-        self.mlp = MLPBlock(embedding_dim, mlp_dim, activation)
-        self.norm3 = nn.LayerNorm(embedding_dim)
-
-        self.norm4 = nn.LayerNorm(embedding_dim)
-        self.cross_attn_image_to_token = Attention(
-            embedding_dim, num_heads, downsample_rate=attention_downsample_rate
-        )
-
-        self.skip_first_layer_pe = skip_first_layer_pe
-
-    def forward(
-        self, queries: Tensor, keys: Tensor, query_pe: Tensor, key_pe: Tensor
-    ) -> Tuple[Tensor, Tensor]:
-        # Self attention block
-        if self.skip_first_layer_pe:
-            queries = self.self_attn(q=queries, k=queries, v=queries)
-        else:
-            q = queries + query_pe
-            attn_out = self.self_attn(q=q, k=q, v=queries)
-            queries = queries + attn_out
-        queries = self.norm1(queries)
-
-        # Cross attention block, tokens attending to image embedding
-        q = queries + query_pe
-        k = keys + key_pe
-        attn_out = self.cross_attn_token_to_image(q=q, k=k, v=keys)
-        queries = queries + attn_out
-        queries = self.norm2(queries)
-
-        # MLP block
-        mlp_out = self.mlp(queries)
-        queries = queries + mlp_out
-        queries = self.norm3(queries)
-
-        # Cross attention block, image embedding attending to tokens
-        q = queries + query_pe
-        k = keys + key_pe
-        attn_out = self.cross_attn_image_to_token(q=k, k=q, v=queries)
-        keys = keys + attn_out
-        keys = self.norm4(keys)
-
-        return queries, keys
-
-
-class Attention(nn.Module):
-    """
-    An attention layer that allows for downscaling the size of the embedding
-    after projection to queries, keys, and values.
-    """
-
-    def __init__(
-        self,
-        embedding_dim: int,
-        num_heads: int,
-        downsample_rate: int = 1,
-    ) -> None:
-        super().__init__()
-        self.embedding_dim = embedding_dim
-        self.internal_dim = embedding_dim // downsample_rate
-        self.num_heads = num_heads
-        assert self.internal_dim % num_heads == 0, "num_heads must divide embedding_dim."
-
-        self.q_proj = nn.Linear(embedding_dim, self.internal_dim)
-        self.k_proj = nn.Linear(embedding_dim, self.internal_dim)
-        self.v_proj = nn.Linear(embedding_dim, self.internal_dim)
-        self.out_proj = nn.Linear(self.internal_dim, embedding_dim)
-
-    def _separate_heads(self, x: Tensor, num_heads: int) -> Tensor:
-        b, n, c = x.shape
-        x = x.reshape(b, n, num_heads, c // num_heads)
-        return x.transpose(1, 2)  # B x N_heads x N_tokens x C_per_head
-
-    def _recombine_heads(self, x: Tensor) -> Tensor:
-        b, n_heads, n_tokens, c_per_head = x.shape
-        x = x.transpose(1, 2)
-        return x.reshape(b, n_tokens, n_heads * c_per_head)  # B x N_tokens x C
-
-    def forward(self, q: Tensor, k: Tensor, v: Tensor) -> Tensor:
-        # Input projections
-        q = self.q_proj(q)
-        k = self.k_proj(k)
-        v = self.v_proj(v)
-
-        # Separate into heads
-        q = self._separate_heads(q, self.num_heads)
-        k = self._separate_heads(k, self.num_heads)
-        v = self._separate_heads(v, self.num_heads)
-
-        # Attention
-        _, _, _, c_per_head = q.shape
-        attn = q @ k.permute(0, 1, 3, 2)  # B x N_heads x N_tokens x N_tokens
-        attn = attn / math.sqrt(c_per_head)
-        attn = torch.softmax(attn, dim=-1)
-
-        # Get output
-        out = attn @ v
-        out = self._recombine_heads(out)
-        out = self.out_proj(out)
-
-        return out

segment_anything/utils/.ipynb_checkpoints/__init__-checkpoint.py

@@ -1,5 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.

segment_anything/utils/.ipynb_checkpoints/amg-checkpoint.py

@@ -1,346 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import numpy as np
-import torch
-
-import math
-from copy import deepcopy
-from itertools import product
-from typing import Any, Dict, Generator, ItemsView, List, Tuple
-
-
-class MaskData:
-    """
-    A structure for storing masks and their related data in batched format.
-    Implements basic filtering and concatenation.
-    """
-
-    def __init__(self, **kwargs) -> None:
-        for v in kwargs.values():
-            assert isinstance(
-                v, (list, np.ndarray, torch.Tensor)
-            ), "MaskData only supports list, numpy arrays, and torch tensors."
-        self._stats = dict(**kwargs)
-
-    def __setitem__(self, key: str, item: Any) -> None:
-        assert isinstance(
-            item, (list, np.ndarray, torch.Tensor)
-        ), "MaskData only supports list, numpy arrays, and torch tensors."
-        self._stats[key] = item
-
-    def __delitem__(self, key: str) -> None:
-        del self._stats[key]
-
-    def __getitem__(self, key: str) -> Any:
-        return self._stats[key]
-
-    def items(self) -> ItemsView[str, Any]:
-        return self._stats.items()
-
-    def filter(self, keep: torch.Tensor) -> None:
-        for k, v in self._stats.items():
-            if v is None:
-                self._stats[k] = None
-            elif isinstance(v, torch.Tensor):
-                self._stats[k] = v[torch.as_tensor(keep, device=v.device)]
-            elif isinstance(v, np.ndarray):
-                self._stats[k] = v[keep.detach().cpu().numpy()]
-            elif isinstance(v, list) and keep.dtype == torch.bool:
-                self._stats[k] = [a for i, a in enumerate(v) if keep[i]]
-            elif isinstance(v, list):
-                self._stats[k] = [v[i] for i in keep]
-            else:
-                raise TypeError(f"MaskData key {k} has an unsupported type {type(v)}.")
-
-    def cat(self, new_stats: "MaskData") -> None:
-        for k, v in new_stats.items():
-            if k not in self._stats or self._stats[k] is None:
-                self._stats[k] = deepcopy(v)
-            elif isinstance(v, torch.Tensor):
-                self._stats[k] = torch.cat([self._stats[k], v], dim=0)
-            elif isinstance(v, np.ndarray):
-                self._stats[k] = np.concatenate([self._stats[k], v], axis=0)
-            elif isinstance(v, list):
-                self._stats[k] = self._stats[k] + deepcopy(v)
-            else:
-                raise TypeError(f"MaskData key {k} has an unsupported type {type(v)}.")
-
-    def to_numpy(self) -> None:
-        for k, v in self._stats.items():
-            if isinstance(v, torch.Tensor):
-                self._stats[k] = v.detach().cpu().numpy()
-
-
-def is_box_near_crop_edge(
-    boxes: torch.Tensor, crop_box: List[int], orig_box: List[int], atol: float = 20.0
-) -> torch.Tensor:
-    """Filter masks at the edge of a crop, but not at the edge of the original image."""
-    crop_box_torch = torch.as_tensor(crop_box, dtype=torch.float, device=boxes.device)
-    orig_box_torch = torch.as_tensor(orig_box, dtype=torch.float, device=boxes.device)
-    boxes = uncrop_boxes_xyxy(boxes, crop_box).float()
-    near_crop_edge = torch.isclose(boxes, crop_box_torch[None, :], atol=atol, rtol=0)
-    near_image_edge = torch.isclose(boxes, orig_box_torch[None, :], atol=atol, rtol=0)
-    near_crop_edge = torch.logical_and(near_crop_edge, ~near_image_edge)
-    return torch.any(near_crop_edge, dim=1)
-
-
-def box_xyxy_to_xywh(box_xyxy: torch.Tensor) -> torch.Tensor:
-    box_xywh = deepcopy(box_xyxy)
-    box_xywh[2] = box_xywh[2] - box_xywh[0]
-    box_xywh[3] = box_xywh[3] - box_xywh[1]
-    return box_xywh
-
-
-def batch_iterator(batch_size: int, *args) -> Generator[List[Any], None, None]:
-    assert len(args) > 0 and all(
-        len(a) == len(args[0]) for a in args
-    ), "Batched iteration must have inputs of all the same size."
-    n_batches = len(args[0]) // batch_size + int(len(args[0]) % batch_size != 0)
-    for b in range(n_batches):
-        yield [arg[b * batch_size : (b + 1) * batch_size] for arg in args]
-
-
-def mask_to_rle_pytorch(tensor: torch.Tensor) -> List[Dict[str, Any]]:
-    """
-    Encodes masks to an uncompressed RLE, in the format expected by
-    pycoco tools.
-    """
-    # Put in fortran order and flatten h,w
-    b, h, w = tensor.shape
-    tensor = tensor.permute(0, 2, 1).flatten(1)
-
-    # Compute change indices
-    diff = tensor[:, 1:] ^ tensor[:, :-1]
-    change_indices = diff.nonzero()
-
-    # Encode run length
-    out = []
-    for i in range(b):
-        cur_idxs = change_indices[change_indices[:, 0] == i, 1]
-        cur_idxs = torch.cat(
-            [
-                torch.tensor([0], dtype=cur_idxs.dtype, device=cur_idxs.device),
-                cur_idxs + 1,
-                torch.tensor([h * w], dtype=cur_idxs.dtype, device=cur_idxs.device),
-            ]
-        )
-        btw_idxs = cur_idxs[1:] - cur_idxs[:-1]
-        counts = [] if tensor[i, 0] == 0 else [0]
-        counts.extend(btw_idxs.detach().cpu().tolist())
-        out.append({"size": [h, w], "counts": counts})
-    return out
-
-
-def rle_to_mask(rle: Dict[str, Any]) -> np.ndarray:
-    """Compute a binary mask from an uncompressed RLE."""
-    h, w = rle["size"]
-    mask = np.empty(h * w, dtype=bool)
-    idx = 0
-    parity = False
-    for count in rle["counts"]:
-        mask[idx : idx + count] = parity
-        idx += count
-        parity ^= True
-    mask = mask.reshape(w, h)
-    return mask.transpose()  # Put in C order
-
-
-def area_from_rle(rle: Dict[str, Any]) -> int:
-    return sum(rle["counts"][1::2])
-
-
-def calculate_stability_score(
-    masks: torch.Tensor, mask_threshold: float, threshold_offset: float
-) -> torch.Tensor:
-    """
-    Computes the stability score for a batch of masks. The stability
-    score is the IoU between the binary masks obtained by thresholding
-    the predicted mask logits at high and low values.
-    """
-    # One mask is always contained inside the other.
-    # Save memory by preventing unnecessary cast to torch.int64
-    intersections = (
-        (masks > (mask_threshold + threshold_offset))
-        .sum(-1, dtype=torch.int16)
-        .sum(-1, dtype=torch.int32)
-    )
-    unions = (
-        (masks > (mask_threshold - threshold_offset))
-        .sum(-1, dtype=torch.int16)
-        .sum(-1, dtype=torch.int32)
-    )
-    return intersections / unions
-
-
-def build_point_grid(n_per_side: int) -> np.ndarray:
-    """Generates a 2D grid of points evenly spaced in [0,1]x[0,1]."""
-    offset = 1 / (2 * n_per_side)
-    points_one_side = np.linspace(offset, 1 - offset, n_per_side)
-    points_x = np.tile(points_one_side[None, :], (n_per_side, 1))
-    points_y = np.tile(points_one_side[:, None], (1, n_per_side))
-    points = np.stack([points_x, points_y], axis=-1).reshape(-1, 2)
-    return points
-
-
-def build_all_layer_point_grids(
-    n_per_side: int, n_layers: int, scale_per_layer: int
-) -> List[np.ndarray]:
-    """Generates point grids for all crop layers."""
-    points_by_layer = []
-    for i in range(n_layers + 1):
-        n_points = int(n_per_side / (scale_per_layer**i))
-        points_by_layer.append(build_point_grid(n_points))
-    return points_by_layer
-
-
-def generate_crop_boxes(
-    im_size: Tuple[int, ...], n_layers: int, overlap_ratio: float
-) -> Tuple[List[List[int]], List[int]]:
-    """
-    Generates a list of crop boxes of different sizes. Each layer
-    has (2**i)**2 boxes for the ith layer.
-    """
-    crop_boxes, layer_idxs = [], []
-    im_h, im_w = im_size
-    short_side = min(im_h, im_w)
-
-    # Original image
-    crop_boxes.append([0, 0, im_w, im_h])
-    layer_idxs.append(0)
-
-    def crop_len(orig_len, n_crops, overlap):
-        return int(math.ceil((overlap * (n_crops - 1) + orig_len) / n_crops))
-
-    for i_layer in range(n_layers):
-        n_crops_per_side = 2 ** (i_layer + 1)
-        overlap = int(overlap_ratio * short_side * (2 / n_crops_per_side))
-
-        crop_w = crop_len(im_w, n_crops_per_side, overlap)
-        crop_h = crop_len(im_h, n_crops_per_side, overlap)
-
-        crop_box_x0 = [int((crop_w - overlap) * i) for i in range(n_crops_per_side)]
-        crop_box_y0 = [int((crop_h - overlap) * i) for i in range(n_crops_per_side)]
-
-        # Crops in XYWH format
-        for x0, y0 in product(crop_box_x0, crop_box_y0):
-            box = [x0, y0, min(x0 + crop_w, im_w), min(y0 + crop_h, im_h)]
-            crop_boxes.append(box)
-            layer_idxs.append(i_layer + 1)
-
-    return crop_boxes, layer_idxs
-
-
-def uncrop_boxes_xyxy(boxes: torch.Tensor, crop_box: List[int]) -> torch.Tensor:
-    x0, y0, _, _ = crop_box
-    offset = torch.tensor([[x0, y0, x0, y0]], device=boxes.device)
-    # Check if boxes has a channel dimension
-    if len(boxes.shape) == 3:
-        offset = offset.unsqueeze(1)
-    return boxes + offset
-
-
-def uncrop_points(points: torch.Tensor, crop_box: List[int]) -> torch.Tensor:
-    x0, y0, _, _ = crop_box
-    offset = torch.tensor([[x0, y0]], device=points.device)
-    # Check if points has a channel dimension
-    if len(points.shape) == 3:
-        offset = offset.unsqueeze(1)
-    return points + offset
-
-
-def uncrop_masks(
-    masks: torch.Tensor, crop_box: List[int], orig_h: int, orig_w: int
-) -> torch.Tensor:
-    x0, y0, x1, y1 = crop_box
-    if x0 == 0 and y0 == 0 and x1 == orig_w and y1 == orig_h:
-        return masks
-    # Coordinate transform masks
-    pad_x, pad_y = orig_w - (x1 - x0), orig_h - (y1 - y0)
-    pad = (x0, pad_x - x0, y0, pad_y - y0)
-    return torch.nn.functional.pad(masks, pad, value=0)
-
-
-def remove_small_regions(
-    mask: np.ndarray, area_thresh: float, mode: str
-) -> Tuple[np.ndarray, bool]:
-    """
-    Removes small disconnected regions and holes in a mask. Returns the
-    mask and an indicator of if the mask has been modified.
-    """
-    import cv2  # type: ignore
-
-    assert mode in ["holes", "islands"]
-    correct_holes = mode == "holes"
-    working_mask = (correct_holes ^ mask).astype(np.uint8)
-    n_labels, regions, stats, _ = cv2.connectedComponentsWithStats(working_mask, 8)
-    sizes = stats[:, -1][1:]  # Row 0 is background label
-    small_regions = [i + 1 for i, s in enumerate(sizes) if s < area_thresh]
-    if len(small_regions) == 0:
-        return mask, False
-    fill_labels = [0] + small_regions
-    if not correct_holes:
-        fill_labels = [i for i in range(n_labels) if i not in fill_labels]
-        # If every region is below threshold, keep largest
-        if len(fill_labels) == 0:
-            fill_labels = [int(np.argmax(sizes)) + 1]
-    mask = np.isin(regions, fill_labels)
-    return mask, True
-
-
-def coco_encode_rle(uncompressed_rle: Dict[str, Any]) -> Dict[str, Any]:
-    from pycocotools import mask as mask_utils  # type: ignore
-
-    h, w = uncompressed_rle["size"]
-    rle = mask_utils.frPyObjects(uncompressed_rle, h, w)
-    rle["counts"] = rle["counts"].decode("utf-8")  # Necessary to serialize with json
-    return rle
-
-
-def batched_mask_to_box(masks: torch.Tensor) -> torch.Tensor:
-    """
-    Calculates boxes in XYXY format around masks. Return [0,0,0,0] for
-    an empty mask. For input shape C1xC2x...xHxW, the output shape is C1xC2x...x4.
-    """
-    # torch.max below raises an error on empty inputs, just skip in this case
-    if torch.numel(masks) == 0:
-        return torch.zeros(*masks.shape[:-2], 4, device=masks.device)
-
-    # Normalize shape to CxHxW
-    shape = masks.shape
-    h, w = shape[-2:]
-    if len(shape) > 2:
-        masks = masks.flatten(0, -3)
-    else:
-        masks = masks.unsqueeze(0)
-
-    # Get top and bottom edges
-    in_height, _ = torch.max(masks, dim=-1)
-    in_height_coords = in_height * torch.arange(h, device=in_height.device)[None, :]
-    bottom_edges, _ = torch.max(in_height_coords, dim=-1)
-    in_height_coords = in_height_coords + h * (~in_height)
-    top_edges, _ = torch.min(in_height_coords, dim=-1)
-
-    # Get left and right edges
-    in_width, _ = torch.max(masks, dim=-2)
-    in_width_coords = in_width * torch.arange(w, device=in_width.device)[None, :]
-    right_edges, _ = torch.max(in_width_coords, dim=-1)
-    in_width_coords = in_width_coords + w * (~in_width)
-    left_edges, _ = torch.min(in_width_coords, dim=-1)
-
-    # If the mask is empty the right edge will be to the left of the left edge.
-    # Replace these boxes with [0, 0, 0, 0]
-    empty_filter = (right_edges < left_edges) | (bottom_edges < top_edges)
-    out = torch.stack([left_edges, top_edges, right_edges, bottom_edges], dim=-1)
-    out = out * (~empty_filter).unsqueeze(-1)
-
-    # Return to original shape
-    if len(shape) > 2:
-        out = out.reshape(*shape[:-2], 4)
-    else:
-        out = out[0]
-
-    return out

segment_anything/utils/.ipynb_checkpoints/onnx-checkpoint.py

@@ -1,144 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import torch
-import torch.nn as nn
-from torch.nn import functional as F
-
-from typing import Tuple
-
-from ..modeling import Sam
-from .amg import calculate_stability_score
-
-
-class SamOnnxModel(nn.Module):
-    """
-    This model should not be called directly, but is used in ONNX export.
-    It combines the prompt encoder, mask decoder, and mask postprocessing of Sam,
-    with some functions modified to enable model tracing. Also supports extra
-    options controlling what information. See the ONNX export script for details.
-    """
-
-    def __init__(
-        self,
-        model: Sam,
-        return_single_mask: bool,
-        use_stability_score: bool = False,
-        return_extra_metrics: bool = False,
-    ) -> None:
-        super().__init__()
-        self.mask_decoder = model.mask_decoder
-        self.model = model
-        self.img_size = model.image_encoder.img_size
-        self.return_single_mask = return_single_mask
-        self.use_stability_score = use_stability_score
-        self.stability_score_offset = 1.0
-        self.return_extra_metrics = return_extra_metrics
-
-    @staticmethod
-    def resize_longest_image_size(
-        input_image_size: torch.Tensor, longest_side: int
-    ) -> torch.Tensor:
-        input_image_size = input_image_size.to(torch.float32)
-        scale = longest_side / torch.max(input_image_size)
-        transformed_size = scale * input_image_size
-        transformed_size = torch.floor(transformed_size + 0.5).to(torch.int64)
-        return transformed_size
-
-    def _embed_points(self, point_coords: torch.Tensor, point_labels: torch.Tensor) -> torch.Tensor:
-        point_coords = point_coords + 0.5
-        point_coords = point_coords / self.img_size
-        point_embedding = self.model.prompt_encoder.pe_layer._pe_encoding(point_coords)
-        point_labels = point_labels.unsqueeze(-1).expand_as(point_embedding)
-
-        point_embedding = point_embedding * (point_labels != -1)
-        point_embedding = point_embedding + self.model.prompt_encoder.not_a_point_embed.weight * (
-            point_labels == -1
-        )
-
-        for i in range(self.model.prompt_encoder.num_point_embeddings):
-            point_embedding = point_embedding + self.model.prompt_encoder.point_embeddings[
-                i
-            ].weight * (point_labels == i)
-
-        return point_embedding
-
-    def _embed_masks(self, input_mask: torch.Tensor, has_mask_input: torch.Tensor) -> torch.Tensor:
-        mask_embedding = has_mask_input * self.model.prompt_encoder.mask_downscaling(input_mask)
-        mask_embedding = mask_embedding + (
-            1 - has_mask_input
-        ) * self.model.prompt_encoder.no_mask_embed.weight.reshape(1, -1, 1, 1)
-        return mask_embedding
-
-    def mask_postprocessing(self, masks: torch.Tensor, orig_im_size: torch.Tensor) -> torch.Tensor:
-        masks = F.interpolate(
-            masks,
-            size=(self.img_size, self.img_size),
-            mode="bilinear",
-            align_corners=False,
-        )
-
-        prepadded_size = self.resize_longest_image_size(orig_im_size, self.img_size).to(torch.int64)
-        masks = masks[..., : prepadded_size[0], : prepadded_size[1]]  # type: ignore
-
-        orig_im_size = orig_im_size.to(torch.int64)
-        h, w = orig_im_size[0], orig_im_size[1]
-        masks = F.interpolate(masks, size=(h, w), mode="bilinear", align_corners=False)
-        return masks
-
-    def select_masks(
-        self, masks: torch.Tensor, iou_preds: torch.Tensor, num_points: int
-    ) -> Tuple[torch.Tensor, torch.Tensor]:
-        # Determine if we should return the multiclick mask or not from the number of points.
-        # The reweighting is used to avoid control flow.
-        score_reweight = torch.tensor(
-            [[1000] + [0] * (self.model.mask_decoder.num_mask_tokens - 1)]
-        ).to(iou_preds.device)
-        score = iou_preds + (num_points - 2.5) * score_reweight
-        best_idx = torch.argmax(score, dim=1)
-        masks = masks[torch.arange(masks.shape[0]), best_idx, :, :].unsqueeze(1)
-        iou_preds = iou_preds[torch.arange(masks.shape[0]), best_idx].unsqueeze(1)
-
-        return masks, iou_preds
-
-    @torch.no_grad()
-    def forward(
-        self,
-        image_embeddings: torch.Tensor,
-        point_coords: torch.Tensor,
-        point_labels: torch.Tensor,
-        mask_input: torch.Tensor,
-        has_mask_input: torch.Tensor,
-        orig_im_size: torch.Tensor,
-    ):
-        sparse_embedding = self._embed_points(point_coords, point_labels)
-        dense_embedding = self._embed_masks(mask_input, has_mask_input)
-
-        masks, scores = self.model.mask_decoder.predict_masks(
-            image_embeddings=image_embeddings,
-            image_pe=self.model.prompt_encoder.get_dense_pe(),
-            sparse_prompt_embeddings=sparse_embedding,
-            dense_prompt_embeddings=dense_embedding,
-        )
-
-        if self.use_stability_score:
-            scores = calculate_stability_score(
-                masks, self.model.mask_threshold, self.stability_score_offset
-            )
-
-        if self.return_single_mask:
-            masks, scores = self.select_masks(masks, scores, point_coords.shape[1])
-
-        upscaled_masks = self.mask_postprocessing(masks, orig_im_size)
-
-        if self.return_extra_metrics:
-            stability_scores = calculate_stability_score(
-                upscaled_masks, self.model.mask_threshold, self.stability_score_offset
-            )
-            areas = (upscaled_masks > self.model.mask_threshold).sum(-1).sum(-1)
-            return upscaled_masks, scores, stability_scores, areas, masks
-
-        return upscaled_masks, scores, masks

segment_anything/utils/.ipynb_checkpoints/transforms-checkpoint.py

@@ -1,102 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-
-# This source code is licensed under the license found in the
-# LICENSE file in the root directory of this source tree.
-
-import numpy as np
-import torch
-from torch.nn import functional as F
-from torchvision.transforms.functional import resize, to_pil_image  # type: ignore
-
-from copy import deepcopy
-from typing import Tuple
-
-
-class ResizeLongestSide:
-    """
-    Resizes images to the longest side 'target_length', as well as provides
-    methods for resizing coordinates and boxes. Provides methods for
-    transforming both numpy array and batched torch tensors.
-    """
-
-    def __init__(self, target_length: int) -> None:
-        self.target_length = target_length
-
-    def apply_image(self, image: np.ndarray) -> np.ndarray:
-        """
-        Expects a numpy array with shape HxWxC in uint8 format.
-        """
-        target_size = self.get_preprocess_shape(image.shape[0], image.shape[1], self.target_length)
-        return np.array(resize(to_pil_image(image), target_size))
-
-    def apply_coords(self, coords: np.ndarray, original_size: Tuple[int, ...]) -> np.ndarray:
-        """
-        Expects a numpy array of length 2 in the final dimension. Requires the
-        original image size in (H, W) format.
-        """
-        old_h, old_w = original_size
-        new_h, new_w = self.get_preprocess_shape(
-            original_size[0], original_size[1], self.target_length
-        )
-        coords = deepcopy(coords).astype(float)
-        coords[..., 0] = coords[..., 0] * (new_w / old_w)
-        coords[..., 1] = coords[..., 1] * (new_h / old_h)
-        return coords
-
-    def apply_boxes(self, boxes: np.ndarray, original_size: Tuple[int, ...]) -> np.ndarray:
-        """
-        Expects a numpy array shape Bx4. Requires the original image size
-        in (H, W) format.
-        """
-        boxes = self.apply_coords(boxes.reshape(-1, 2, 2), original_size)
-        return boxes.reshape(-1, 4)
-
-    def apply_image_torch(self, image: torch.Tensor) -> torch.Tensor:
-        """
-        Expects batched images with shape BxCxHxW and float format. This
-        transformation may not exactly match apply_image. apply_image is
-        the transformation expected by the model.
-        """
-        # Expects an image in BCHW format. May not exactly match apply_image.
-        target_size = self.get_preprocess_shape(image.shape[2], image.shape[3], self.target_length)
-        return F.interpolate(
-            image, target_size, mode="bilinear", align_corners=False, antialias=True
-        )
-
-    def apply_coords_torch(
-        self, coords: torch.Tensor, original_size: Tuple[int, ...]
-    ) -> torch.Tensor:
-        """
-        Expects a torch tensor with length 2 in the last dimension. Requires the
-        original image size in (H, W) format.
-        """
-        old_h, old_w = original_size
-        new_h, new_w = self.get_preprocess_shape(
-            original_size[0], original_size[1], self.target_length
-        )
-        coords = deepcopy(coords).to(torch.float)
-        coords[..., 0] = coords[..., 0] * (new_w / old_w)
-        coords[..., 1] = coords[..., 1] * (new_h / old_h)
-        return coords
-
-    def apply_boxes_torch(
-        self, boxes: torch.Tensor, original_size: Tuple[int, ...]
-    ) -> torch.Tensor:
-        """
-        Expects a torch tensor with shape Bx4. Requires the original image
-        size in (H, W) format.
-        """
-        boxes = self.apply_coords_torch(boxes.reshape(-1, 2, 2), original_size)
-        return boxes.reshape(-1, 4)
-
-    @staticmethod
-    def get_preprocess_shape(oldh: int, oldw: int, long_side_length: int) -> Tuple[int, int]:
-        """
-        Compute the output size given input size and target long side length.
-        """
-        scale = long_side_length * 1.0 / max(oldh, oldw)
-        newh, neww = oldh * scale, oldw * scale
-        neww = int(neww + 0.5)
-        newh = int(newh + 0.5)
-        return (newh, neww)