The Sonic CD Intro, Sonic Boom, Is Now Available in Glorious HD Sonic fans have used the chaos emeralds to up-res the classic Sonic CD intro, so now you can watch it in glorious HD! Users Tanks and Quazza over on the Sonic Retro forums have painstakingly cleaned and upscaled the Sonic CD intro, and their work is finally finished. Utilizing AI-technology, Tanks goes into detail on working on the up-resing process, utilizing the program ESRGAN, to build specially-tailored AI models for this project. “We stuck to our proprietary models for most of the frame cleaning and scaling, using the film cels SEGA released not too long ago as a guidepost. Some of the darker scenes needed some extra support, and it’s thanks to the recently released celframes model we were able to fill in some gaps,” Tanks explained. The rest of the forum post goes into greater detail, and you should give it a read if this AI wizardry interests you!