revert to version that runs locally

app.py

@@ -47,8 +47,8 @@ def canny_filter2(image):
     image = cv2.Canny(image, low_threshold, high_threshold)
     image = image[:, :, None]
     image = np.concatenate([image, image, image], axis=2)
-    #canny_image = Image.fromarray(image)
-    return image 
+    canny_image = Image.fromarray(image)
+    return canny_image