There is a problem with the inference result

[wen020]

I used the following script to inference, but the resulting image was white. Does anyone know what the problem is?
code
code.zip
input

output

[RobertLuo1]

Hi, Thanks for your attention to our work. I have read through your code, and I find that you should normalize the image in the range of (-1, 1) before inputting it into the model. And can you provide this image? By the way, can you please give us a star if it is helpful. :)