Differential G-Buffer rendering for mediated reality applications

Abstract

Physically-based approaches are increasingly used in a wide field of computer graphics. By that, modern graphic engines can provide a realistic output using physical correct values instead of an analytical approximation. Such applications apply the final lighting on a geometry buffer to reduce the complexity. Using this approach for Mediated Reality applications, some changes have to be made in order to fuse the real with the virtual world. In this paper, we present an approach with a focusing on the extraction of real world environment information and saving them directly to the geometry buffer. Therefore, we introduce a solution using spatial geometry to integrate the real world into the virtual environment. Hereby, the approach is usable in real-time and allows for visual interaction between virtual and real world objects. Moreover, a manipulation of the real world is easily possible.