中山大学学报自然科学版 ›› 2011, Vol. 50 ›› Issue (5): 50-53.

• 研究论文 • 上一篇    下一篇

基于多小波变换的图像编码算法研究

柳 薇1,陈冬丽2
  

  1. (1.华南师范大学计算机学院,广东 广州 510631;2.中山大学图书馆,广东 广州 510275)
  • 收稿日期:2011-02-04 修回日期:1900-01-01 出版日期:2011-09-25 发布日期:2011-09-25

An Image Coding Method Based on Multiwavelet Transform

LIU Wei1, CHEN Dongli2   

  1. (1.School of Computer, South China Normal University, Guangzhou 510631, China;2.Library, Sun Yatsen University, Guangzhou 510275, China)
  • Received:2011-02-04 Revised:1900-01-01 Online:2011-09-25 Published:2011-09-25

摘要: 多小波是小波理论的新分支,将传统的单小波拓展到矢量空间。多小波既包括了传统小波的全部优点,同时又克服了单小波的缺陷,将实际应用中十分重要的正交性、对称性、紧支性、光滑性完美地结合在一起,因此多小波在图像处理方面的应用也显示出巨大的潜力。该文在研究了JPEG2000的核心编码技术——EBCOT算法和多小波变换原理的基础上,提出了结合EBCOT算法的多小波图像编码。算法将各种常用的多小波基,结合EBCOT算法,对灰度图像进行压缩编码。实验结果证明基于EBCOT算法的多小波图像编码方法能够对图像进行很好的压缩。

关键词: 图像编码, 小波变换, 多小波变换, EBCOT

Abstract: Multiwavelet extends traditional scalar wavelet to vector space, and includes all the advantages of the traditional wavelet. Multiwavelet shows the perfect union of symmetry, orthogonally, finitely support and smoothness. As a result, the applications of multiwavelet in image processing have shown great potential. An image coding method of image coding based on EBCOT algorithm and multiwavelet transform was proposed. In this research, a variety of commonlyused multiwavelet bases were used to combine EBCOT algorithm.The experimental result shows that the proposed method is a valuable attempt of image compression.

Key words: image coding, wavelet transform, multiwavelet transform, EBCOT

中图分类号: