Change depth from float64 to float32 (#3453)

nerfstudio/data/utils/data_utils.py

@@ -78,10 +78,10 @@ def get_depth_image_from_path(
         Depth image torch tensor with shape [height, width, 1].
     """
     if filepath.suffix == ".npy":
-        image = np.load(filepath) * scale_factor
+        image = np.load(filepath).astype(np.float32) * scale_factor
         image = cv2.resize(image, (width, height), interpolation=interpolation)
     else:
         image = cv2.imread(str(filepath.absolute()), cv2.IMREAD_ANYDEPTH)
-        image = image.astype(np.float64) * scale_factor
+        image = image.astype(np.float32) * scale_factor
         image = cv2.resize(image, (width, height), interpolation=interpolation)
     return torch.from_numpy(image[:, :, np.newaxis])