Illumination and view dependent progressive transmission of semi-regular meshes with subdivision connectivity
Wei Guan, Juyong Zhang, Jianfei Cai, Jianmin Zheng · 2007
For wireless network based graphics applications, a key challenge is how to efficiently transmit complex 3D models over bandwidth-limited wireless channels. Recently, several view-dependent 3D progressive mesh transmission schemes have been proposed, which save the transmission bandwidth through only delivering the visible portions of a mesh model. In this paper, we propose to incorporate the illumination effects into the existing view-depend progressive mesh transmission system to further improve the performance. In particular, we propose a novel distortion model, which consists of both illumination distortion and geometry distortion. We further simplify the distortion model in order to compute the rate-distortion function for each segment of a mesh model in a fast manner. Based on our proposed simplified distortion model, given the viewing and lighting parameters, we are able to optimally allocate bits among different segments in real time. Experimental results show that significant quality improvement can be achieved by taking into account the illumination effects.