一种基于形态学的小波域静态图像编码算法
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:


A New Still Image Coding Algorithm Based on Morphology
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    零树小波编码器EZW和SPIHT是近年来最优秀的两个编码算法,不足之处在于其表示父子关系使用了较多的辅助位.基于形态学表示的编码器MRWD是另一成功的编码算法,其不足之处在于没有利用带间小波系数相似性.利用这些编码器的优点,并基于小波数据的形态学表示,开发了一个新的高效小波编码器.新的编码算法的主要特点在于充分利用了带内小波系数的聚类特性和带间小波系数的相似性以及幅值衰减性.最突出的特点是利用形态算子和带间相似性进行聚类预测,从而克服了前述3个编码器的不足.具体数值实验结果表明,该算法的编码效率优于上述3

    Abstract:

    Zerotree-Based wavelet coders, EZW and SPIHT, are two excellent coding algorithms currently, but the imperfect point is that they need more bits to express the parent-children relationship. The another coder based on the morphological representation of wavelet data (MRWD) is also successful, but the shortage is that it doesn t use the interband similarity of wavelet coefficients. In this paper, a new wavelet-based coder is developed by taking the advantages of the above coders and based on morphology. The main property of the new coder is that it uses following characteristics of waveler coefficients;(1)within-subband clustering of significant coefficients;(2)cross-subband similarity;(3)decay of magitude of waveletcoefficients acrooss subband.The advantage of the new coder is to utilize the property of intraband clustering and interband similarity to predict the interband clusters based on morphological operator and then to overcome the shortages of the above three.Wxperimental resuts results show that the performance of the new coder is to utilize the property of intraband clustering and interband similarity to predict the interband clusters based on morphological operator and then to overcome the shortages of the above three coders.Experimental results show that the performance of the new coder is superior ti the above coders.In specially,the new coder has the outstanding performance for the images including a large portion portion of texture.For xeample,for Barbara image 512×521,at 0.25b/p, the new coder outperforms EZW,SPIHT and MRWD and MRWD by 1.68dB,and0.59dB.

    参考文献
    相似文献
    引证文献
引用本文

武拴虎,谈正,邢延超.一种基于形态学的小波域静态图像编码算法.软件学报,2002,13(4):797-803

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2000-05-08
  • 最后修改日期:2000-10-10
  • 录用日期:
  • 在线发布日期:
  • 出版日期:
您是第位访问者
版权所有:中国科学院软件研究所 京ICP备05046678号-3
地址:北京市海淀区中关村南四街4号,邮政编码:100190
电话:010-62562563 传真:010-62562533 Email:jos@iscas.ac.cn
技术支持:北京勤云科技发展有限公司

京公网安备 11040202500063号