How to calculate ssim between channels in a tensor ? about pytorch-msssim HOT 5 CLOSED

Hi @freesunshine, are you going to make the difference between channels as large as possible?

from pytorch-msssim.

@VainF Yes!! That is what i want!

from pytorch-msssim.

@VainF
Hey.
The normalization problem is solved. here
But the SSIM values still go below zero after several batchs. So normalization can not solve this problem.
I read some discussions over this issue, but got no clue.Can you give a suggestion to avoiding negtive SSIM value?

from pytorch-msssim.

I'm not sure about that. But I think it's a little difficult to use ssim to maximum the difference between channels. Because even random noises will lead to a very small ssim response.

from pytorch-msssim.

You are right. And other criterions should be needed to prevent the network from becoming a noise maker.
However，it is just an idea, i'm not sure it will work or not. We will see it.
Thank you for your SSIM approach and your suggestion. : )

from pytorch-msssim.