Google launch project that precisely controls light in images LightLab

Google launched the LightLab project, which achieves accurate light-source control of single images through diffusion models, which regulates light-source strength, colour and allows the insertion of virtual light sources; the research team builds training data sets by combining real photo-to-penetrating and synthetic rendering images, using the light ' s linear properties to isolate target light sources and environmental light; and the experiment shows that the technology is superior to existing methods in PSNR and SSM indicators to achieve a physically reasonable light effect, but takes 12 hours of training time and 64 v4 TPUs。