New Wavelet Image Compression Method in SCD

被引:0
|
作者
Xie, Yuanmang [1 ,2 ]
Zhang, Bin [1 ]
Li, Guang [2 ,3 ]
机构
[1] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Peoples R China
[2] Tianjin Univ Technol, Minist Educ, Key Lab Comp Vis & Syst, Tianjin 300384, Peoples R China
[3] CNPC, Earth Phys Explorat Co Daqing, Daqing 163357, Heilongjiang, Peoples R China
关键词
Image; wavelet; compression; SCD; MSMP;
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
New wavelet image compression method in Spherical Coordinates Domain (SCD) is proposed in this paper. In this method, the three high-frequency coefficients in SCD domain of wavelet are pre-processed. Firstly, the high-frequency coefficients are transformed to the SCD to reduce the correlation in the same scale. Then, a multi-scale model product (MSMP) is defined and some noise can be removed, which ensures a higher compression ratio. The high-frequency parts in SCD are coded by improved SPIHT algorithm. In the improved method, Matrix of Maximum Pixel (MMP) is introduced to overcome the disadvantage of traditional SPIHT algorithm. Simulation results show that the new method can have higher compression ratio.
引用
收藏
页码:204 / 209
页数:6
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