Check out the author's GitHub page here.
Well, I think you can tell where this is going...
I tried it out on a sample upscaled humanoid sprite (Male Vampire - 285) and the results were... well, not great, but I do see a lot of potential!
I think higher resolution inputs would help considerably, based on what is mentioned in the project:
I used an upscaled sprite that was only about 256x512. To make matters worse, I had to remove the transparency, and to do so quickly, I just converted it to a jpeg so I could test immediately which probably caused some artifacts...Use high-res image. The model is trained with 1024x1024 images. Use at least 512x512 with fine-details. Low-res images and JPEG artifacts may result in unsatisfactory results.
@KoW: If you read this, could you send me some high resolution samples from DREAM that I could use for tests? Preferably humanoid characters, maybe a few MOBs (try to pick a neutral pose like frame 3 of the front facing walking animation) and a few good hand-drawn NPCs. If you have time, I'd appreciate it if you could replace the transparency with a plain white background. No problem if you don't, I can remove the transparency when I get home from work.