SSIM, FID and PSNR

[leetcodevis13]

Hi authors, your work is impressive. Thanks for sharing the code base. However, I couldn't find the evaluation code for SSIM, PSNR, and FID. It would greatly help the community if you could share it. Looking forward to your kind response.

[ankanbhunia]

Please use the file utils/metrics.py for the evaluation code for SSIM, PSNR, and FID.

[leetcodevis13]

Awesome! Thanks :)