Convert facebook/sam-3d-objects with diffusers-3d 0.1.0.dev0

LICENSE-SAM

@@ -0,0 +1,52 @@
+SAM License
+Last Updated: November 19, 2025
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NOTICE

@@ -0,0 +1,26 @@
+Meta SAM 3D Objects integration notice
+
+The mixture-of-transformers sparse-structure flow, condition embedders, image, mask and pointmap preprocessing, layout
+decoding, sparse-structure pruning and downsampling, sampler settings, and checkpoint key mapping in this directory are
+modified from:
+
+  facebookresearch/sam-3d-objects
+  https://github.com/facebookresearch/sam-3d-objects
+  revision f91db411c50efee93d8db7aeb323885650f6f722
+
+Those portions are SAM Materials provided under the accompanying SAM License (LICENSE-SAM):
+
+  SAM License, Last Updated: November 19, 2025
+  Copyright (c) Meta Platforms, Inc. and affiliates.
+
+The SAM License is not an open-source license; it restricts certain uses and requires that a copy of it accompany any
+redistribution of SAM Materials or derivative works. If you publish research results obtained with these materials,
+you must acknowledge their use. All ported source files carry a prominent modification notice.
+
+The released checkpoint (facebook/sam-3d-objects) is distributed by Meta under the same SAM License and is not
+included in this package. It embeds DINOv2 ViT-L/14 (with registers) image encoders; DINOv2 was originally released
+by Meta under the Apache License 2.0.
+
+The TRELLIS stages this family reuses (sparse-structure decoder, structured-latent flow, Gaussian and mesh decoders,
+scheduler) live in ../trellis and keep their MIT License and notice. Independently written diffusers-3d package glue
+remains under the package Apache-2.0 license. No affiliation, sponsorship, or endorsement by Meta is claimed.

README.md

@@ -0,0 +1,70 @@
+---
+license: other
+license_name: sam-license
+license_link: https://huggingface.co/suvadityamuk/sam-3d-objects-diffusers-3d/blob/main/LICENSE-SAM
+base_model: facebook/sam-3d-objects
+pipeline_tag: image-to-3d
+tags:
+- diffusers-3d
+- sam3d-objects
+- 3d
+- image-to-3d
+---
+
+# SAM 3D Objects for diffusers-3d
+
+[facebook/sam-3d-objects](https://huggingface.co/facebook/sam-3d-objects) converted into a [diffusers-3d](https://github.com/suvadityamuk/diffusers)
+pipeline: ordinary Diffusers and Transformers component folders plus the `object3d_model_index.json` sidecar that
+the package's auto-loader validates before downloading anything. Nothing here requires remote code.
+
+## Install
+
+```bash
+pip install git+https://github.com/suvadityamuk/diffusers.git
+pip install "git+https://github.com/suvadityamuk/diffusers.git#subdirectory=packages/diffusers-3d"
+```
+
+`diffusers-3d` runs every network in plain PyTorch on CPU or GPU. Rendering Gaussian splats needs the optional
+`gsplat` backend; the PBR-textured mesh for TRELLIS.2 needs CuMesh (see the package docs).
+
+## Usage
+
+```python
+import torch
+from diffusers_3d import AutoPipelineForImageTo3D, ImageCondition
+
+pipeline = AutoPipelineForImageTo3D.from_pretrained("suvadityamuk/sam-3d-objects-diffusers-3d").to("cuda")
+output = pipeline(ImageCondition(image=rgb, mask=mask), formats=("gaussian", "mesh"))
+gaussians, mesh = output.objects
+```
+
+`rgb` is a `(3, H, W)` tensor in `[0, 1]` and `mask` a `(1, H, W)` tensor selecting the object. The object comes back placed in the input camera's frame. Pass `pointmap=` (camera-space points per pixel) to use depth; without it the pointmap tokens are zero, as in the model's training dropout.
+
+## Components
+
+| Folder | Class |
+|---|---|
+| `gaussian_decoder` | `diffusers_3d.families.trellis.decoders.TrellisSLatGaussianDecoder` |
+| `image_encoder` | `transformers.Dinov2WithRegistersModel` |
+| `mesh_decoder` | `diffusers_3d.families.trellis.decoders.TrellisSLatMeshDecoder` |
+| `slat_conditioner` | `diffusers_3d.families.sam3d_objects.conditioner.Sam3DConditionEmbedder` |
+| `slat_flow_model` | `diffusers_3d.families.trellis.models.TrellisSLatFlowModel` |
+| `slat_scheduler` | `diffusers_3d.families.trellis.scheduler.TrellisFlowEulerScheduler` |
+| `sparse_structure_conditioner` | `diffusers_3d.families.sam3d_objects.conditioner.Sam3DConditionEmbedder` |
+| `sparse_structure_decoder` | `diffusers_3d.families.trellis.decoders.TrellisSparseStructureDecoder` |
+| `sparse_structure_flow_model` | `diffusers_3d.families.sam3d_objects.models.Sam3DSparseStructureFlowModel` |
+| `sparse_structure_scheduler` | `diffusers_3d.families.trellis.scheduler.TrellisFlowEulerScheduler` |
+
+## Provenance
+
+Converted with `diffusers-3d-convert-sam3d` from `diffusers-3d 0.1.0.dev0`; the package's family README lists the pinned upstream
+revisions and how the conversion maps each tensor. Parity tests against the pinned upstream code are part of the
+package test suite.
+
+## License and attribution
+
+SAM 3D Objects weights and code: SAM License, Copyright (c) Meta Platforms, Inc. and affiliates.
+This repository redistributes converted SAM Materials under that Agreement, a copy of which is in `LICENSE-SAM`;
+by using these files you agree to it. It is not an open-source license: it forbids military, warfare, nuclear,
+espionage, and weapons uses and use by parties subject to trade controls, and publications using the model must
+acknowledge it. Not affiliated with or endorsed by Meta.

gaussian_decoder/config.json

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+{
+  "_class_name": "TrellisSLatGaussianDecoder",
+  "_diffusers_version": "0.41.0.dev0",
+  "attn_mode": "swin",
+  "latent_channels": 8,
+  "mlp_ratio": 4,
+  "model_channels": 768,
+  "num_blocks": 12,
+  "num_head_channels": 64,
+  "num_heads": 12,
+  "pe_mode": "ape",
+  "qk_rms_norm": false,
+  "representation_config": {
+    "2d_filter_kernel_size": 0.1,
+    "3d_filter_kernel_size": 0.0009,
+    "lr": {
+      "_features_dc": 1.0,
+      "_opacity": 1.0,
+      "_rotation": 0.1,
+      "_scaling": 1.0,
+      "_xyz": 1.0
+    },
+    "num_gaussians": 32,
+    "opacity_bias": 0.1,
+    "perturb_offset": true,
+    "scaling_activation": "softplus",
+    "scaling_bias": 0.004,
+    "voxel_size": 1.5
+  },
+  "resolution": 64,
+  "use_checkpoint": false,
+  "use_fp16": true,
+  "window_size": 8
+}

gaussian_decoder/diffusion_pytorch_model.safetensors

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image_encoder/config.json

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+{
+  "apply_layernorm": true,
+  "architectures": [
+    "Dinov2WithRegistersModel"
+  ],
+  "attention_probs_dropout_prob": 0.0,
+  "drop_path_rate": 0.0,
+  "dtype": "float32",
+  "hidden_act": "gelu",
+  "hidden_dropout_prob": 0.0,
+  "hidden_size": 1024,
+  "image_size": 518,
+  "initializer_range": 0.02,
+  "layer_norm_eps": 1e-06,
+  "layerscale_value": 1.0,
+  "mlp_ratio": 4,
+  "model_type": "dinov2_with_registers",
+  "num_attention_heads": 16,
+  "num_channels": 3,
+  "num_hidden_layers": 24,
+  "num_register_tokens": 4,
+  "out_features": [
+    "stage24"
+  ],
+  "out_indices": [
+    24
+  ],
+  "patch_size": 14,
+  "qkv_bias": true,
+  "reshape_hidden_states": true,
+  "stage_names": [
+    "stem",
+    "stage1",
+    "stage2",
+    "stage3",
+    "stage4",
+    "stage5",
+    "stage6",
+    "stage7",
+    "stage8",
+    "stage9",
+    "stage10",
+    "stage11",
+    "stage12",
+    "stage13",
+    "stage14",
+    "stage15",
+    "stage16",
+    "stage17",
+    "stage18",
+    "stage19",
+    "stage20",
+    "stage21",
+    "stage22",
+    "stage23",
+    "stage24"
+  ],
+  "transformers_version": "5.19.0",
+  "use_swiglu_ffn": false
+}

image_encoder/model.safetensors

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mesh_decoder/config.json

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+{
+  "_class_name": "TrellisSLatMeshDecoder",
+  "_diffusers_version": "0.41.0.dev0",
+  "attn_mode": "swin",
+  "latent_channels": 8,
+  "mlp_ratio": 4,
+  "model_channels": 768,
+  "num_blocks": 12,
+  "num_groups": 32,
+  "num_head_channels": 64,
+  "num_heads": 12,
+  "pe_mode": "ape",
+  "qk_rms_norm": false,
+  "representation_config": {
+    "use_color": true
+  },
+  "resolution": 64,
+  "use_checkpoint": false,
+  "use_fp16": true,
+  "window_size": 8
+}

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model_index.json

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+{
+  "_class_name": "Sam3DObjectsPipeline",
+  "_diffusers_version": "0.41.0.dev0",
+  "gaussian_decoder": [
+    "diffusers_3d.families.trellis.decoders",
+    "TrellisSLatGaussianDecoder"
+  ],
+  "image_encoder": [
+    "transformers",
+    "Dinov2WithRegistersModel"
+  ],
+  "mesh_decoder": [
+    "diffusers_3d.families.trellis.decoders",
+    "TrellisSLatMeshDecoder"
+  ],
+  "slat_conditioner": [
+    "diffusers_3d.families.sam3d_objects.conditioner",
+    "Sam3DConditionEmbedder"
+  ],
+  "slat_flow_model": [
+    "diffusers_3d.families.trellis.models",
+    "TrellisSLatFlowModel"
+  ],
+  "slat_mean": [
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+    -2.05276058,
+    -3.10432536,
+    -0.11294304,
+    -0.85146744,
+    0.45506954
+  ],
+  "slat_scheduler": [
+    "diffusers_3d.families.trellis.scheduler",
+    "TrellisFlowEulerScheduler"
+  ],
+  "slat_std": [
+    2.37326008,
+    2.13174402,
+    2.2413953,
+    2.30589401,
+    2.1191894,
+    1.8969511,
+    2.41684989,
+    2.08374642
+  ],
+  "sparse_structure_conditioner": [
+    "diffusers_3d.families.sam3d_objects.conditioner",
+    "Sam3DConditionEmbedder"
+  ],
+  "sparse_structure_decoder": [
+    "diffusers_3d.families.trellis.decoders",
+    "TrellisSparseStructureDecoder"
+  ],
+  "sparse_structure_flow_model": [
+    "diffusers_3d.families.sam3d_objects.models",
+    "Sam3DSparseStructureFlowModel"
+  ],
+  "sparse_structure_scheduler": [
+    "diffusers_3d.families.trellis.scheduler",
+    "TrellisFlowEulerScheduler"
+  ]
+}

object3d_model_index.json

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+{
+  "components": [
+    {
+      "expected_class": "diffusers_3d.families.trellis.decoders.TrellisSLatGaussianDecoder",
+      "loading_eligible": true,
+      "name": "gaussian_decoder",
+      "optional": true,
+      "review_status": "reviewed",
+      "subfolder": "gaussian_decoder"
+    },
+    {
+      "expected_class": "transformers.models.dinov2_with_registers.modeling_dinov2_with_registers.Dinov2WithRegistersModel",
+      "loading_eligible": true,
+      "name": "image_encoder",
+      "optional": false,
+      "review_status": "reviewed",
+      "subfolder": "image_encoder"
+    },
+    {
+      "expected_class": "diffusers_3d.families.trellis.decoders.TrellisSLatMeshDecoder",
+      "loading_eligible": true,
+      "name": "mesh_decoder",
+      "optional": true,
+      "review_status": "reviewed",
+      "subfolder": "mesh_decoder"
+    },
+    {
+      "expected_class": "diffusers_3d.families.sam3d_objects.conditioner.Sam3DConditionEmbedder",
+      "loading_eligible": true,
+      "name": "slat_conditioner",
+      "optional": true,
+      "review_status": "reviewed",
+      "subfolder": "slat_conditioner"
+    },
+    {
+      "expected_class": "diffusers_3d.families.trellis.models.TrellisSLatFlowModel",
+      "loading_eligible": true,
+      "name": "slat_flow_model",
+      "optional": true,
+      "review_status": "reviewed",
+      "subfolder": "slat_flow_model"
+    },
+    {
+      "expected_class": "diffusers_3d.families.trellis.scheduler.TrellisFlowEulerScheduler",
+      "loading_eligible": true,
+      "name": "slat_scheduler",
+      "optional": true,
+      "review_status": "reviewed",
+      "subfolder": "slat_scheduler"
+    },
+    {
+      "expected_class": "diffusers_3d.families.sam3d_objects.conditioner.Sam3DConditionEmbedder",
+      "loading_eligible": true,
+      "name": "sparse_structure_conditioner",
+      "optional": false,
+      "review_status": "reviewed",
+      "subfolder": "sparse_structure_conditioner"
+    },
+    {
+      "expected_class": "diffusers_3d.families.trellis.decoders.TrellisSparseStructureDecoder",
+      "loading_eligible": true,
+      "name": "sparse_structure_decoder",
+      "optional": false,
+      "review_status": "reviewed",
+      "subfolder": "sparse_structure_decoder"
+    },
+    {
+      "expected_class": "diffusers_3d.families.sam3d_objects.models.Sam3DSparseStructureFlowModel",
+      "loading_eligible": true,
+      "name": "sparse_structure_flow_model",
+      "optional": false,
+      "review_status": "reviewed",
+      "subfolder": "sparse_structure_flow_model"
+    },
+    {
+      "expected_class": "diffusers_3d.families.trellis.scheduler.TrellisFlowEulerScheduler",
+      "loading_eligible": true,
+      "name": "sparse_structure_scheduler",
+      "optional": false,
+      "review_status": "reviewed",
+      "subfolder": "sparse_structure_scheduler"
+    }
+  ],
+  "contribution_status": "reviewed_package",
+  "family_id": "sam3d_objects",
+  "object_kinds": [
+    "gaussian_splat",
+    "mesh",
+    "sparse_voxel"
+  ],
+  "output_object_types": [
+    "diffusers_3d.objects.gaussian.GaussianSplatAsset",
+    "diffusers_3d.objects.mesh.MeshAsset",
+    "diffusers_3d.objects.voxel.SparseVoxelAsset"
+  ],
+  "output_representations": [
+    "gaussian-splat",
+    "mesh",
+    "sparse-structure"
+  ],
+  "pipeline_class": "diffusers_3d.families.sam3d_objects.pipeline.Sam3DObjectsPipeline",
+  "required_backends": [],
+  "review_status": "reviewed",
+  "schema_version": 2,
+  "task_ids": [
+    "image-to-3d"
+  ]
+}

slat_conditioner/config.json

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+  "_class_name": "Sam3DConditionEmbedder",
+  "_diffusers_version": "0.41.0.dev0",
+  "image_embed_dim": 1024,
+  "pointmap_config": null,
+  "prenorm_features": true,
+  "projection_hidden_multiplier": 4.0
+}

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slat_flow_model/config.json

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+  "_diffusers_version": "0.41.0.dev0",
+  "cond_channels": 1024,
+  "in_channels": 8,
+  "io_block_channels": [
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+  ],
+  "mlp_ratio": 4,
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+  "num_blocks": 24,
+  "num_head_channels": 64,
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+  "qk_rms_norm_cross": false,
+  "resolution": 64,
+  "share_mod": false,
+  "use_checkpoint": false,
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+  "use_skip_connection": true
+}

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slat_scheduler/scheduler_config.json

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+{
+  "_class_name": "TrellisFlowEulerScheduler",
+  "_diffusers_version": "0.41.0.dev0",
+  "num_train_timesteps": 1000,
+  "sigma_min": 0.0
+}

sparse_structure_conditioner/config.json

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+{
+  "_class_name": "Sam3DConditionEmbedder",
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