计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (32): 69-71.

• 学术探讨 • 上一篇    下一篇

一种感兴趣区图像压缩编码算法

陈晓雷1,2,马义德2   

  1. 1.兰州理工大学 电气与信息工程学院,兰州 730050
    2.兰州大学 信息科学与工程学院,兰州 730000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-11-11 发布日期:2007-11-11
  • 通讯作者: 陈晓雷

Region of interest image coding algorithm

CHEN Xiao-lei1,2,MA Yi-de2   

  1. 1.School of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou 730050,China
    2.College of Information Science and Engineering,Lanzhou University,Lanzhou 730000,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-11-11 Published:2007-11-11
  • Contact: CHEN Xiao-lei

摘要: 提出了一种感兴趣区图像压缩编码算法,该算法采用不同的小波和比特率对感兴趣区和背景区分开进行小波变换和编解码,结合SPIHT,该算法可灵活地控制感兴趣区和背景区之间的相对压缩质量,由于小波变换时采用了BNC17/11小波和CDF9/7小波,该算法进一步提高了感兴趣区图像压缩编码算法的压缩性能。同时该算法无需计算感兴趣区掩膜。

Abstract: A ROI(Region Of Interest) image coding algorithm is proposed.By using different wavelets and bit rate to transform and code the original ROI and BG(BackGround) separately,combined with the SPIHT(Set Partitioning In Hierarchical Trees),the compression quality between ROI and BG can be controlled flexibly.Since the BNC17/11 wavelet and CDF9/7 wavelet are employed to perform the wavelet transform,the capability of ROI image compression algorithm is improved.Further,the proposed algorithm needs not to calculate the ROI mask.