Dynamic Shading in Image-Based Rendering

Image-based rendering techniques have been used to improve image quality, increase frame rate, and reduce modeling time. However, once the images have been acquired, they are bound to the light conditions of the scene during acquisition time. This paper describes how the Plenoptic Modeling approach can be extended to support applications that allow users to arti cially change the original light conditions. A hybrid (geometric and image-based) solution is presented for producing shadows and view-dependent e ects, such as specular highlights. The technique has been successfully tested with synthetic images and, under special lighting conditions, can also be applied to natural images.