These seem to be making the rounds more quickly now, first FFVII and IX and now someone released an AI made upscale of REmake's backgrounds. You can see some comparisons below. Maybe it's placebo but I just tested it on the beginning few areas and it certainly seems crisper than the base backgrounds. Judge for yourself!
https://reupscaleproject.blogspot.com/2019/01/release-time_31.html
I highly recommend using the torrent link of the main file that's listed in the comments as mega.nz has a bandwidth limit that capped out for me during download. Enjoy!
https://reupscaleproject.blogspot.com/2019/01/release-time_31.html
REupscale project is a mod that upscales and corrects, using Topaz's A.I. Gigapixel, the background textures of Resident Evil HD Remaster.
The textures are the kept at the same original resolution (1920x1440) but they are obtained by downsampling images twice the resolution. Some textures use the Gamecube original source (~90%) while others are upscaled from the HD Remastered texture (~10%).
Here are a few screenshots showing the results:
I highly recommend using the torrent link of the main file that's listed in the comments as mega.nz has a bandwidth limit that capped out for me during download. Enjoy!