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Issue No.02 - March/April (2008 vol.14)
pp: 440-453
In this paper, we propose a generic point cloud encoder that provides a unified framework for compressing different attributes of point samples corresponding to 3D objects with arbitrary topology. In the proposed scheme, the coding process is led by an iterative octree cell subdivision of the object space. At each level of subdivision, positions of point samples are approximated by the geometry centers of all tree-front cells while normals and colors are approximated by their statistical average within each of tree-front cells. With this framework, we employ attribute-dependent encoding techniques to exploit different characteristics of various attributes. All of these have led to significant improvement in the rate-distortion (R-D) performance and a computational advantage over the state of the art. Furthermore, given sufficient levels of octree expansion, normal space partitioning and resolution of color quantization, the proposed point cloud encoder can be potentially used for lossless coding of 3D point clouds.
Data compaction and compression, Indexing methods, Object hierarchies
Yan Huang, Jingliang Peng, C.-C. Jay Kuo, M. Gopi, "A Generic Scheme for Progressive Point Cloud Coding", IEEE Transactions on Visualization & Computer Graphics, vol.14, no. 2, pp. 440-453, March/April 2008, doi:10.1109/TVCG.2007.70441
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