基于纹理分析小波变换图像清晰度评价方法研究.pdf

28 8 Vol28 No8 2007 8 Ch inese Journal of Scientific Instrum ent Aug. 2007 刘兴宝, 袁道成 ( 621900) : , , , , , , , ( 2 m ) : ; ; : TP274 TP391 : A : 460. 50 Research on mi age definition criterion using wa elet transform based on the texture analysis L iu X ingbao, Yuan Daocheng Institute ofM echan icalM anufacturing Technology, China A cademy of Engineering and Physics, M ianyang 621900, China) Abstract: The feasib ility ofw a elet transform in mi age defin ition criterion applicationw as erified and analyzed. Re search show s that the performance of mi age defin ition e aluation function is sign ificantly related to the spatial texture distribution of the mi age, and mi age gray grad ient d irection matrix texture analysis method can greatly mi pro e its performance. Due to the pre alence of surface texture on mach ined parts, the mi age texture analysis has gained prac tical applications. Through statistical analysis of the mi age texture characteristic, an mi age defin ition criterion using w a elet transform based on the texture analysis is proposed in th is paper. Expermi ents show that the e aluation func tion has super ior performance for objects w ith texture features, and ach ie es h igh resolution ( better than 2 m ). Key words: texture analysis; w a elet transform; mi age defin ition , ; 1 , DCT ; , , , [ 1] , ,