Sonic Adventure 2 gets a 2GB AI-enhanced HD Texture Pack, available for download right now

Modder [Hazmat] has released a new HD Texture Pack for Sonic Adventure 2. According to the modder, each texture was upscaled using an advanced Neuro-Network AI, with the scale set at 4X for the level textures and 8X for the skybox textures.

source: gamezpot.com