View-dependent transmission of 3-D normal meshes

—A unified approach to rate-distortion (R-D) optimized compression and view-dependent transmission of three-dimensional (3-D) normal meshes is investigated in this work. A normal mesh is partitioned into several segments, which are then encoded independently. The bitstream of each segment is truncated optimally using a geometry distortion model based on the subdivision hierarchy. It is shown that the proposed compression algorithm yields a higher coding gain than the conventional algorithm. Moreover, to facilitate interactive transmission of 3-D data according to a client’s viewing position, the server can allocate an adaptive bitrate to each segment based on its visibility priority. Simulation results demonstrate that the view-dependent transmission technique can reduce the bandwidth requirement considerably, while maintaining a good visual quality.

• Type: Conference
• Year: 2003
• Where: ISCAS
• Authors: Jae-Young Sim, Chang-Su Kim, C. C. Jay Kuo, Sang Uk Lee
• Keywords: ISCAS 2003, View-dependent Transmission, View-dependent Transmission Technique, —A Unified Approach