Update image_utils.py

src/picai_eval/image_utils.py

@@ -69,10 +69,10 @@ def read_image(path: PathLike):
     elif '.nii' in path or '.mha' in path or 'mhd' in path:
         return sitk.GetArrayFromImage(sitk.ReadImage(path))
     elif '.npz' in path:
-        try:
-            return np.load(path)['softmax'].astype('float32')[1]  # nnUnet format
-        except Exception as e:
-            return np.load(path)['probabilities'].astype('float32')[1]  # nnUnet format
+    # read the nnU-Net format
+        data = np.load(path)
+        data = data["softmax"] if "softmax" in data else data["probabilities"]
+        return data.astype("float32")[1]    
     else:
         raise ValueError(f"Unexpected file path. Supported file formats: .nii(.gz), .mha, .npy and .npz. Got: {path}.")
 
@@ -88,5 +88,4 @@ def read_label(path: PathLike) -> "npt.NDArray[np.int32]":
     """Read label, given a filepath"""
     # read label and ensure correct dtype
     lbl: "npt.NDArray[np.int32]" = np.array(read_image(path), dtype=np.int32)
-    lbl[lbl != 1] = 0
     return lbl