View-dependent progressive transmission and rendering for lunar model based on bicubic subdivision-surface wavelet |
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Authors: | Yankui Sun Yafeng Dong Kaimin Mao Zesheng Tang |
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Affiliation: | 1. Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China;2. Faculty of Information Technology, Macau University of Science and Technology, Macao SAR, China |
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Abstract: | Given the fact that the back of the digital lunar model is invisible from any viewpoint, a view-dependent progressive transmission and rendering method for lunar model is proposed and a client-server browsing system is implemented. On the server side, the semi-regular lunar surface is partitioned into dozens of segments, and each segment is compressed independently using bicubic subdivision-surface wavelet and SPIHT. For any viewpoint, only the data of the visible segments are transmitted to the client side progressively, then decoded and locally reconstructed there. This approach not only improves the efficiency of transmission, but also reduces the reconstruction time greatly. We can browse the lunar model on the client almost in realtime. |
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Keywords: | Lunar model Progressive transmission Local reconstruction View-dependent Subdivision-surface wavelet |
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