It probably does poorly on periodic repeating textures. The DCT in JPEG handles periodic brightness (like a striped shirt) fairly well because it turns into a f

It probably does poorly on periodic repeating textures. The DCT in JPEG handles periodic brightness (like a striped shirt) fairly well because it turns into a few high-frequency components (which are still roughly periodic despite the zig-zag transformation.) This compression scheme has no support for periodicity so it can only represent a striped shirt with a polygon for each stripe. Neither of his test images have stripes.