Add Reading of Depth Image

Author: ingra14m

scene/dataset_readers.py

@@ -18,6 +18,7 @@
 from utils.graphics_utils import getWorld2View2, focal2fov, fov2focal
 import numpy as np
 import json
+import imageio
 from pathlib import Path
 from plyfile import PlyData, PlyElement
 from utils.sh_utils import SH2RGB
@@ -190,8 +191,7 @@ def readCamerasFromTransforms(path, transformsfile, white_background, extension=
         for idx, frame in enumerate(frames):
             cam_name = os.path.join(path, frame["file_path"] + extension)
 
-            if is_test:
-                depth_name = os.path.join(path, frame["file_path"] + "_depth_0001" + extension)
+            depth_name = os.path.join(path, frame["file_path"] + "_depth0000" + '.exr')
 
             matrix = np.linalg.inv(np.array(frame["transform_matrix"]))
             R = -np.transpose(matrix[:3,:3])
@@ -201,7 +201,7 @@ def readCamerasFromTransforms(path, transformsfile, white_background, extension=
             image_path = os.path.join(path, cam_name)
             image_name = Path(cam_name).stem
             image = Image.open(image_path)
-            depth = Image.open(depth_name).convert('RGBA') if is_test else None
+            depth = imageio.imread(depth_name)
 
             im_data = np.array(image.convert("RGBA"))
 
@@ -222,9 +222,9 @@ def readCamerasFromTransforms(path, transformsfile, white_background, extension=
 
 def readNerfSyntheticInfo(path, white_background, eval, extension=".png"):
     print("Reading Training Transforms")
-    train_cam_infos = readCamerasFromTransforms(path, "transforms_test.json", white_background, extension)
+    train_cam_infos = readCamerasFromTransforms(path, "transforms_train.json", white_background, extension)
     print("Reading Test Transforms")
-    test_cam_infos = readCamerasFromTransforms(path, "transforms_train.json", white_background, extension)
+    test_cam_infos = readCamerasFromTransforms(path, "transforms_test.json", white_background, extension)
 
     if not eval:
         train_cam_infos.extend(test_cam_infos)

train.py

@@ -71,7 +71,7 @@ def training(dataset, opt, pipe, testing_iterations, saving_iterations):
             viewpoint_stack = scene.getTrainCameras().copy()
 
         viewpoint_cam = viewpoint_stack.pop(randint(0, len(viewpoint_stack)-1))
-        gt_depth = viewpoint_cam.depth.unsqueeze(0)
+        gt_depth = viewpoint_cam.depth
         # Render
         render_pkg = render(viewpoint_cam, gaussians, pipe, background)
         image, viewspace_point_tensor, visibility_filter, radii = render_pkg["render"], render_pkg["viewspace_points"], render_pkg["visibility_filter"], render_pkg["radii"]
@@ -82,7 +82,7 @@ def training(dataset, opt, pipe, testing_iterations, saving_iterations):
         Ll1 = l1_loss(image, gt_image)
         loss = (1.0 - opt.lambda_dssim) * Ll1 + opt.lambda_dssim * (1.0 - ssim(image, gt_image))
         depth_loss = l1_loss(depth, gt_depth) * 0.1
-        loss = loss + depth_loss
+        # loss = loss + depth_loss
         loss.backward()
 
         iter_end.record()

utils/camera_utils.py

@@ -11,7 +11,7 @@
 
 from scene.cameras import Camera
 import numpy as np
-from utils.general_utils import PILtoTorch
+from utils.general_utils import PILtoTorch, ArrayToTorch
 from utils.graphics_utils import fov2focal
 
 WARNED = False
@@ -39,13 +39,16 @@ def loadCam(args, id, cam_info, resolution_scale):
         resolution = (int(orig_w / scale), int(orig_h / scale))
 
     resized_image_rgb = PILtoTorch(cam_info.image, resolution)
-    resized_depth_rgb = PILtoTorch(cam_info.depth, resolution) if cam_info.depth is not None else None
+    if cam_info.depth is not None:
+        resized_depth_rgb = ArrayToTorch(cam_info.depth, resolution)
+    else:
+        resized_depth_rgb = None
 
     gt_image = resized_image_rgb[:3, ...]
     if resized_depth_rgb is not None:
-        depth_mask = resized_depth_rgb[3, ...] > 0
+        depth_mask = resized_depth_rgb[0, ...] > 60000
         gt_depth = resized_depth_rgb[0, ...]
-        gt_depth[depth_mask] = 2. + 6. * (1 - gt_depth[depth_mask])
+        gt_depth[depth_mask] = 0
     else:
         gt_depth = None
 

utils/general_utils.py

@@ -26,6 +26,15 @@ def PILtoTorch(pil_image, resolution):
     else:
         return resized_image.unsqueeze(dim=-1).permute(2, 0, 1)
 
+def ArrayToTorch(array, resolution):
+    # resized_image = np.resize(array, resolution)
+    resized_image_torch = torch.from_numpy(array)
+
+    if len(resized_image_torch.shape) == 3:
+        return resized_image_torch.permute(2, 0, 1)
+    else:
+        return resized_image_torch.unsqueeze(dim=-1).permute(2, 0, 1)
+
 def get_expon_lr_func(
     lr_init, lr_final, lr_delay_steps=0, lr_delay_mult=1.0, max_steps=1000000
 ):