Update app.py

app.py

@@ -106,7 +106,7 @@ def get_model(ctx, model_path):
 mx.test_utils.download('https://s3.amazonaws.com/onnx-model-zoo/duc/city1.png')
 
 # read image as rgb
-im = cv.imread(im)[:, :, ::-1]
+im = cv.imread('city1.png')[:, :, ::-1]
 # set output shape (same as input shape)
 result_shape = [im.shape[0],im.shape[1]]
 # set rgb mean of input image (used in mean subtraction)