[1]王娜,张力,李霞.一种多阈值的快速小波零块图像编码方法[J].深圳大学学报理工版,2004,21(4):287-290.
 WANG Na,ZHANG Li,and LI Xia.A fast wavelet zero-blocks image coding method based on multi-threshold[J].Journal of Shenzhen University Science and Engineering,2004,21(4):287-290.
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一种多阈值的快速小波零块图像编码方法()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第21卷
期数:
2004年4期
页码:
287-290
栏目:
光电与信息工程
出版日期:
2004-10-30

文章信息/Info

Title:
A fast wavelet zero-blocks image coding method based on multi-threshold
文章编号:
1000-2618(2004)04-0287-04
作者:
王娜张力李霞
深圳大学信息工程学院,深圳518060
Author(s):
WANG Na ZHANG Li and LI Xia
College of Information Engineering, Shenzhen University,Shenzhen 518060,P. R. China
关键词:
小波变换多阈值图像零块标志位图
Keywords:
wavelet transform multi-threshold zeroblocks flag map
分类号:
TN 919.81
文献标志码:
A
摘要:
提出一种结合多阈值的快速小波零块图像编码方法.采用小波零块图像编码方法的子带形式,引入多阈值思想,利用最大值集合检查每个子带的重要性,提出只扫描有重要系数的子带,可减少小波零块图像编码的搜索冗余性.且用分散存储不重要集合的方法,代替小波零块图像编码算法中的一个大链表集中存储,避免了大链表的排序,减少了编码时间,提高了编码效率.并用标志位图的形式存储重要系数,减少小波零块图像编码的内存占用及编码时间.实验证明本算法有效.
Abstract:
A fast wavelet-based embedded image coding method, which combines multi-threshold with zeroblocks, is proposed. The new method uses the form of SPECK s subbands and checks the significance of the sub-bands through maximum set. Only the significant subbands are scanned so that the redundancy generated by scanning is reduced. Furthermore, the several small lists which store the insignificant set in stead of single list in SPECK are proposed, which avoids the ordering of single large list. The flag map instead of lists in the refining process is used to keep significant wavelet coefficients, which saves the memory in the coding procedure and further reduces the coding time. Experimental results show its efficiency.

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更新日期/Last Update: 2015-11-06