摘要
通过实验探讨了在2个不同版本的轮廓波变换消噪方法中,滤波器的选择对于消噪效果的影响,指出在轮廓波消噪方法中最合适的滤波器应当是"pkva"和"9-7"小波,应当避免使用的滤波器是"haar"小波.
The basic principle and implementation of contourlet transform is briefly reviewed, and the basic method of contourlet-based de-noising is explained. The effect of filter selection of contoutlet-based de-noising is discussed for two different versions of contourlet transform by experimental means. The best filter of contoudet-based de-noising should be wavelets ＂pkva＂ and ＂9-7＂, on the other hand, wavelet ＂haar＂ should be avoided in practical implementation.
出处
《信阳师范学院学报（自然科学版）》
CAS
北大核心
2007年第4期518-520,共3页
Journal of Xinyang Normal University(Natural Science Edition)
基金
河南省自然科学基金项目(2004924075)
河南省科技攻关项目(0524480009)
关键词
轮廓波变换
消噪
滤波器
contourlet transform
de-noising
filter
