情報処理学会 第75回全国大会講演要旨

In this paper, we present a simple method to model the diffuse lighting in an image which allows the user to turn off, turn on, and move the lights, without knowing the scene geometry nor the camera parameters. The user first roughly marks the area lit by a light source in the input image and then our method will approximate the diffuse lighting by creating a virtual light source and fitting its lighting effect to the input image. With the model of the lighting effect obtained, the user can modify the lighting in the input image very easily.