计算机工程2011，Vol.37Issue(6)：206-208,211,4.DOI:10.3969/j.issn.1000-3428.2011.06.071
基于系数块的改进SPIHT算法
Improved SPIHT Algorithm Based on Block of Coefficients
摘要
Abstract
This paper introduces the procedure and features for image compression using Set Partitioning in Hierarchical Trees(SPIHT) coding based on DWT, summarizes the aspects of impwved SPIHT algorithm, analyzes the advantages and disadvantages of the algorithm profoundly, gives some initial treatments which do not affect the algorithm main frame in accordance with the above disadvantages and develops the algorithm, which can reduce the redundancy and improve the encoding speed.Theoretical analysis and experimental result show the proposed algorithm can enhance the PSNR with low bit rate and maintain high PSNR with high bit rate.关键词
离散小波变换/图像压缩/多级树集合分裂编码/峰值信噪比Key words
DWT/ image compression/ Set Partitioning In Hierarchical Trees(SPIHT) Coding/ PSNR分类
信息技术与安全科学引用本文复制引用
朱华亮,修春娣,韦志棉..基于系数块的改进SPIHT算法[J].计算机工程,2011,37(6):206-208,211,4.基金项目
国家自然科学基金资助项目(60672102) （60672102）
国家部委基金资助项目 （）
