fix not defined

app_enhance.py

@@ -69,7 +69,8 @@ def enhance_image(
     #     interpolation = cv2.INTER_AREA if scale < 2 else cv2.INTER_LANCZOS4
     #     h, w = img.shape[0:2]
     #     output = cv2.resize(output, (int(w * scale / 2), int(h * scale / 2)), interpolation=interpolation)
-
+    
+    h, w = img.shape[0:2]
     max_size = 3480
     if h > max_size:
         w = int(w * max_size / h)