%0 Journal Article
%T Zero-Searching Fractal Image Coding Based on Wavelet Transform<br>结合小波变换的零搜索分形图象编码
%A ZHOU Juan
%A LUO Jian shu
%A QIAO Shi dong
%A <br>周娟
%A 罗建书
%J 中国图象图形学报
%D 2001
%I 
%X In order to improve quality of fractal image coding and reduce coding time, a fast polynomial fractal image coding method based on wavelet decomposition is presented in this papre. Jacquin's fractal image coding method needs searchign for the optimum domain block in the image. It must take so long time to do this searching work. This character is a fatal flaw of the method which confine this method in using. Monro's fractal image coding method doesn't meed searching for the optimum domain block, so his fractal image coding is very rapid and simple in reference. His coding method is zero searching fractal coding method and its coding time is very short. But his reconstructed image has blocking effect. In this paper. in order to solve this question, a new fractal image coding based on discrete wavelet transformation is presented. The new method also doesn't need searching for the optimum domain block, so its coding time is very short. This algorithm utilizes the character of wavelet analysis which is unbalanced distributions of energy in subbands among wavelet trasform image. The algorithm based on discrete wavelet transformation is:First, the image is decomposed into different channels by discrete wavelet transformation. Second, wavelet coefficients are encoded by fractal image coding method. Simulation shows that the quality of the reconstructed image is improved greatly and coding time is only 1.48 seconds.
%K Wavelet transform
%K Fractal image compression
%K IFS<br>小波变换
%K 分形图象编码
%K 函数迭代系统
%K 零搜索
%K 图象恢复
%K 块效应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=84924222FB635691&yid=14E7EF987E4155E6&vid=B31275AF3241DB2D&iid=DF92D298D3FF1E6E&sid=B10D796AE1B3FEBD&eid=8B1FE194AD66DC3D&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=1&reference_num=5