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| from tqdm import tqdm
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| from scene.cameras import Camera
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| import numpy as np
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| from utils.general_utils import PILtoTorch
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| from utils.graphics_utils import fov2focal
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| WARNED = False
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| def loadCam(args, id, cam_info, resolution_scale):
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| orig_w, orig_h = cam_info.width, cam_info.height
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| if args.resolution in [1, 2, 4, 8]:
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| image_width, image_height = round(orig_w/(resolution_scale * args.resolution)), round(orig_h/(resolution_scale * args.resolution))
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| else:
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| if args.resolution == -1:
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| if orig_w > 1600:
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| global WARNED
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| if not WARNED:
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| print("[ INFO ] Encountered quite large input images (>1.6K pixels width), rescaling to 1.6K.\n "
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| "If this is not desired, please explicitly specify '--resolution/-r' as 1")
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| WARNED = True
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| global_down = orig_w / 1600
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| else:
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| global_down = 1
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| else:
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| global_down = orig_w / args.resolution
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| scale = float(global_down) * float(resolution_scale)
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| image_width, image_height = (int(orig_w / scale), int(orig_h / scale))
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| return Camera(colmap_id=cam_info.uid, R=cam_info.R, T=cam_info.T,
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| FoVx=cam_info.FovX, FoVy=cam_info.FovY,
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| image_width=image_width, image_height=image_height,
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| bg=cam_info.bg,
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| image=cam_info.image,
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| image_path=cam_info.image_path,
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| image_name=cam_info.image_name, uid=id,
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| timestep=cam_info.timestep, data_device=args.data_device)
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| def cameraList_from_camInfos(cam_infos, resolution_scale, args):
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| camera_list = []
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| for id, c in tqdm(enumerate(cam_infos), total=len(cam_infos)):
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| if args.select_camera_id != -1 and c.camera_id is not None:
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| if c.camera_id != args.select_camera_id:
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| continue
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| camera_list.append(loadCam(args, id, c, resolution_scale))
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| return camera_list
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| def camera_to_JSON(id, camera : Camera):
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| Rt = np.zeros((4, 4))
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| Rt[:3, :3] = camera.R.transpose()
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| Rt[:3, 3] = camera.T
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| Rt[3, 3] = 1.0
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| W2C = np.linalg.inv(Rt)
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| pos = W2C[:3, 3]
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| rot = W2C[:3, :3]
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| serializable_array_2d = [x.tolist() for x in rot]
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| camera_entry = {
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| 'id' : id,
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| 'img_name' : camera.image_name,
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| 'width' : camera.width,
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| 'height' : camera.height,
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| 'position': pos.tolist(),
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| 'rotation': serializable_array_2d,
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| 'fy' : fov2focal(camera.FovY, camera.height),
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| 'fx' : fov2focal(camera.FovX, camera.width)
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| }
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| return camera_entry
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|
