Progressive compression and transmission of PointTexture images

被引：0
|
作者：
Song, In-Wook
Kim, Chang-Su
Lee, Sang-Uk
机构：
[1] Korea Univ, Dept Elect Engn, Seoul 136701, South Korea
[2] Seoul Natl Univ, Sch Elect Engn & Comp Sci, Seoul 151, South Korea
来源：
JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION | 2006年 / 17卷 / 05期
关键词：
PointTexture; 3D image coding; rate-distortion optimization; view-dependent optimization; MPEG-4;
D O I：
10.1016/j.jvcir.2005.10.001
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A progressive compression and transmission algorithm for PointTexture 3-D images is proposed in this work. The proposed algorithm represents a PointTexture image hierarchically using an octree, The geometry information in octree nodes is encoded by the predictive partial matching (PPM) method, while the color information is encoded using the discrete cosine transform (DCT). The encoder achieves the progressive transmission of the 3-D image by transmitting the octree nodes in a top-down manner. We develop two transmission schemes, based on the rate-distortion (R-D) optimization and the view-dependent optimization respectively, to maximize the image quality subject to a given bit budget. Extensive simulation results demonstrate that the proposed algorithm is an efficient method for progressive transmission of 3-D data. (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码：1090 / 1107
页数：18
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