Does the background need to be changed in order to achieve lighting rendering?

[chasecjg]

Thank you very much for your contributions to this field. I have a question: Currently, there are two implementation methods for this algorithm, both of which achieve foreground lighting rendering by replacing the background. Is it currently only possible to achieve lighting rendering on the foreground by replacing the background?

[V1sionVerse]

Processing the whole image is as simple as commenting out a single line in the gradio_demo.py file: https://github.com/lllyasviel/IC-Light/issues/39#issuecomment-2132151346