%0 Journal Article
%T An Improved Algorithm of Restoring Image Based on Hamming Error-correcting Codes<br>一种改进的基于汉明纠错码的图像恢复算法
%A PENG Fan
%A WANG Pei
%A CHEN Sheng
%A <br>彭凡
%A 王沛
%A 陈胜
%J 中国图象图形学报
%D 2008
%I 
%X For reducing the errors which arisen during Hamming error-correcting decoding so that the likelihood of mistakenly and randomly rectifying is cut down and the quality of restored image is improved,an improved algorithm of restoring image based on Hamming error-correcting codes is presented. This algorithm first divides the most significant bit (MSB)plane of a grayscale image into four big blocks.Then each big block is divided into four small blocks and they are exchanged vertically in a big block.Secondly,the four binary bits at the same pixel position of four big blocks are encoded according to (7,4) Hamming encoding and the three checkout bit plane big blocks are implemented with diagonal exchanging in itself,then the exchanged three big blocks are embedded into the least significant bit(LSB) of corresponded pixel of the first three big blocks of the original image orderly according to checkout bit sequence.Then the second most significant bit plane(2MSB) and the third one(3MSB) are operated using above algorithm and embedded respectively into the second least significant bit plane(2LSB) and the third one(3LSB). The experiment results indicate that the improved method has obtained better restored image effect than the original one in the circumstance of cutting,replacing,average filtering and median filtering,and JPEG lossy compression.And the noise caused by the restored algorithm is reduced largely.
%K most significant bit(MSB)
%K Hamming error-correcting encoding
%K exchange
%K image restoration<br>最高位平面
%K 汉明纠错编码
%K 对调
%K 图像恢复
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=26A71A7E0645BEA4C9FC96D74F56EF9F&yid=67289AFF6305E306&vid=FC0714F8D2EB605D&iid=F3090AE9B60B7ED1&sid=CD65D483B6C24C75&eid=549638E6695045E9&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=3