%0 Journal Article
%T Noise Image Coding Using Soft-Threshold Based Denoising<br>基于软门限去噪的图象压缩编码研究
%A YU Yue
%A XUE Yong-ling
%A LI Feng-ting
%A GE Cheng-hui
%A <br>余越
%A 薛永林
%A 李凤亭
%A 葛成辉
%J 中国图象图形学报
%D 2001
%I 
%X The soft threshold method proposed by Donoho is studied in this paper. The noise standard deviation of noise image and the thresholds of different scale are given. A separable 2 D wavelet filter is used so that the soft threshold denoising by Donoho is expediently applied to image processing, such as simultaneous denosing makes compression rate of a noisy image be large farthest. For noise image of nature scene and SAR, different image compression schemes are proposed respectively. Especially for SAR image, a natural logarithm transfors multiplicative noise to additive noise so that SAR image can be suppressed via the soft threshold denoising scheme. Experimental results show the decoded images by the soft threshold denoising have better quality than by the hard threshold denoising. It indicates that the improved ways in this paper are effective for noise image compression.
%K Wavelet transform
%K Soft
%K threshold
%K Image compression
%K Noise<br>子波变换
%K 图象压缩
%K 噪声
%K 软门限去噪
%K 图象编码
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=8BFB8B1E3C6BA3BF&yid=14E7EF987E4155E6&vid=B31275AF3241DB2D&iid=CA4FD0336C81A37A&sid=D997634CFE9B6321&eid=771152D1ADC1C0EB&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=3&reference_num=8