Accept both PIL and file-descriptor inputs

app.py

@@ -147,9 +147,22 @@ def _run(image):
     return Image.fromarray((_restore(arr, device) * 255.0 + 0.5).astype(np.uint8))
 
 
+def _as_image(x):
+    """Accept what either caller sends: a PIL image from the page, or the file
+    descriptor dict that gr.api hands over for an uploaded file."""
+    if isinstance(x, Image.Image):
+        return x
+    if isinstance(x, dict):
+        x = x.get("path") or x.get("url")
+    if isinstance(x, (str, bytes, os.PathLike)):
+        return Image.open(x)
+    raise gr.Error("Could not read that image.")
+
+
 def _check(image):
     if image is None:
         raise gr.Error("Choose a photo first.")
+    image = _as_image(image)
     if image.width * image.height > MAX_PIXELS:
         raise gr.Error("That photo is larger than 40 megapixels. Please resize it a little.")
     return image.convert("RGB")