Output images have green tint compared to inputs

[araleza]

Hey, thanks for providing this super resolution network, it's produced some great output for me.

I do have an issue to report though. As well as upsampling the image, the network seems to mess with the color balance. I'm guessing that might be because it normalizes the input to have equal ranges of R, G, and B, but it would be good to reverse that transform for the output image.

It usually seems to add a lot of green to images. It can be reversed through the color balance option in Gimp, but it would be nice if the resulting image didn't need further processing to make it look like the original.

[cfrancesco]

I suspect it might be a bias from the dataset which contains a lot of natural images. Would be interesting to see if running something like a color normalization through the dataset alleviates the issue.