| 一种JPEG2000图像传输中位平面错误修复算法 |
| |
| 引用本文： | 王超,曹鹏.一种JPEG2000图像传输中位平面错误修复算法[J].电路与系统学报,2007,12(3):140-142. |
| |
| 作者姓名： | 王超 曹鹏 |
| |
| 作者单位： | 1. 东南大学,国家专用集成电路系统工程技术研究中心,江苏,南京210096
2. 东南大学,国家专用集成电路系统工程技术研究中心,江苏,南京,210096 |
| |
| 摘 要： | JPEG2000图像的编、解码是逐个位平面进行的,因此码流中任何的数据丢失都会影响最后的位平面及对应的小波系数.为了解决这一问题,JPEG2000标准中将错误的小波系数以零替换,但这一替换将影响很多非零系数,造成某些高频成分丢失.本文结合JPEG2000码流的特点提出一种新的错误修复算法.该算法将根据子带间和未损坏的位平面信息来修复损坏的位平面数据.试验结果表明所提出算法比现有算法的信噪比改进1~3个dB.
|
| 关 键 词： | 位平面 离散小波变换 |
| 文章编号： | 1007-0249（2007）03-0140-03 |
| 修稿时间： | 2006-01-232006-04-17 |
A new algorithm for bitplane error recovery for image transmission in JPEG2000 |
| |
| WANG Chao,CAO Peng.A new algorithm for bitplane error recovery for image transmission in JPEG2000[J].Journal of Circuits and Systems,2007,12(3):140-142. |
| |
| Authors: | WANG Chao CAO Peng |
| |
| Affiliation: | Nation ASIC system Engineering Research Center, Southeast University, Nanjing 210096, China |
| |
| Abstract: | In JPEG2000, coding and decoding are processed bitplane by bitplane. Any data loss occurs in bitstream will affect the consequent bitplanes and their wavelet coefficients. To solve this problem, JPEG2000 standard replaces the missing wavelet coefficients by zeros. However, the replacement may affect lots of significant non-zero coefficients such that some high frequency components are lost. In this paper, we present a novel error concealment algorithm for image transmission in bit-plane base. The proposed algorithm recovers the damaged bitplanes data according to the cross subband and undamaged bitplane information. The recovered wavelet coefficients will be much similar with error-free data. The experiment result shows that the proposed algorithm has 1-3dB improvement than those without error resilient mechanism. |
| |
| Keywords: | JPEG2000 |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
