Computer Engineering and Applications ›› 2008, Vol. 44 ›› Issue (5): 38-39.

• 学术探讨 • Previous Articles     Next Articles

Study of SPIHT image coding based on lifting wavelet transform

FAN Wen-bing,CHEN Hui,CHEN Yan   

  1. College of Information Engineering,Zhengzhou University,Zhengzhou 450052,China
  • Received:2007-06-07 Revised:2007-08-28 Online:2008-02-11 Published:2008-02-11
  • Contact: FAN Wen-bing

基于提升小波变换的SPIHT编码算法研究

范文兵,陈 晖,陈 燕   

  1. 郑州大学 信息工程学院,郑州 450052
  • 通讯作者: 范文兵

Abstract: Due to the computational complexity of SPIHT,the integer-to-integer lifting scheme,which could simplify the computational process,was adopted instead of the normal wavelet transform.Integrating the characteristic of Lifting Wavelet Transform and DCT transform,the thesis advanced a new scheme.Experiments show that the PSNR value is more than that of the original SPIHT at the same bit rate.

Key words: Lifting Wavelet Transform, DCT transform, SPIHT algorithm

摘要: 针对小波变换和多级树集合分裂图像编码具有浮点数运算、算法复杂等特点,采用整数实现的提升格式代替了原来的小波变换,并结合提升小波变换和DCT变换的特点,提出了一种改进方案。仿真结果表明,在相同的较低比特率情况下,与原算法相比,峰值信噪比有明显提高,取得了更优的压缩效果。

关键词: 提升小波变换, DCT变换, SPIHT编码算法