MCGIM-Based Model Streaming for Realtime Progressive Rendering |
| |
Authors: | Bin Sheng Wei-Liang Meng Han-Qiu Sun En-Hua Wu |
| |
Affiliation: | Senior Member,CCF,ACM,IEEE Department of Computer Science and Engineering,the Chinese University of Hong Kong,Hong Kong,China State Key Laboratory of Computer Science,Institute of Software,Chinese Academy of Sciences,Beijing 100190,China Faculty of Science and Technology,University of Macau,Macao,China |
| |
Abstract: | While most mesh streaming techniques focus on optimizing the transmission order of the polygon data, few approaches have addressed
the streaming problems by using geometry images (GIM). In this paper, we present a new approach which firstly partitions a mesh into several surface patches, then converts
these patches into multi-chart geometry images (MCGIM). After resampling the MCGIM and normal map atlas are obtained, we hierarchically construct the regular geometry image
representation by adopting the quadtree structure. In this way, the encoded nodes can be transmitted in arbitrary order with
high transmission flexibility. Also, the rendering quality of the partially transmitted models can be greatly improved by
using the normal texture atlas. Meanwhile only the geometry on the silhouette to the current viewpoint are required to be
refined and transmitted, therefore the amount of data is minimized for transferring each frame. In particular, our approach
also allows users to encode and transmit the mesh data via JPEG2000 technique. Therefore, our mesh streaming method is suitable
for transmitting 3D animation models with use of Motion JPEG2000 videos. Experimental results have demonstrated the effectiveness
of our approach, which enables one server to stream the MCGIM texture atlas to the clients. Also, the transmitted model can
be rendered in a multiresolution manner by GPU acceleration on the client side, due to the regular geometry structure of MCGIM. |
| |
Keywords: | |
本文献已被 CNKI 万方数据 SpringerLink 等数据库收录! |
|