Charles Shan

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![result](https://github.com/user-attachments/assets/a39896f4-d2b7-46fe-bca6-c55a18f96a42) Here is mine. I changed a picture and plot the YCbCr: I find it seams Y channel is good:

I FIX IT!!! because it used transform.Normalize We need to use inv_trans! ``` inv_trans = transforms.Compose([ transforms.Normalize(mean=[0., 0., 0.], std=[1/0.229, 1/0.224, 1/0.225]), # Recover the std transforms.Normalize(mean=[-0.485, -0.456, -0.406], std=[1.,...