x4 upscaling

[AndreasAakerberg]

I just tested your work on some real face images of arbitrary sizes, and the results look really good. However, the output images are always squared to 512x512px. Is it possible to perform true x4 upscaling without changing the proportions of the input images?

[csxmli2016]

I just tested your work on some real face images of arbitrary sizes, and the results look really good. However, the output images are always squared to 512x512px. Is it possible to perform true x4 upscaling without changing the proportions of the input images?

Hi, it seems that this work is not flexible to perform true on x4 task. Since the input face size should be consistent with the conducted dictionary, we can only generate face results with 512x512px. As for the changing of the proportion, I am trying to solve it by the following steps:
Any size input -> crop and align face -> upsample to 512x512 -> restoration -> output 512x512 face -> back to the upsampled input with scale s.
I will upload this code to a new branch in these days. Maybe this can help you to solve this problem.

[csxmli2016]

I just tested your work on some real face images of arbitrary sizes, and the results look really good. However, the output images are always squared to 512x512px. Is it possible to perform true x4 upscaling without changing the proportions of the input images?

Hi, I have updated a new branch. It is more flexible to handle an entire frame with an upscale factor s. But the enhanced face is still fixed to 512*512.