Neural network inserts new light sources into photographs and has them interact realistically with the scene to create re-lit images

https://www.eurekalert.org/news-releases/1093415

"enables lighting changes after the fact instead of buying expensive lighting gear/ reshooting scenes... estimates 3D version of scene representing shape/ surface colors, intentionally leaving out any lighting... then place in/ interactively simulate virtual light sources creating rough preview which neural network can transforms into realistic photograph... control like a graphic arts program, but on existing photographs... future: extend functionality to videos without having to resort to using a generative AI model"