Most upscaling algorithms don’t know how to accurately fill in missing pixels, so you end up with blocky low-quality results. To solve this problem, Topaz Photo AI’s neural networks are continuously trained on a wide variety of sample images to understand how photorealistic detail looks. After learning from millions of images, our AI image upscale can now believably increase resolution on a wide variety of different subjects (portraits, wildlife, landscapes, architecture, etc) and image types (DSLR, web/compressed, CG).