基于散斑图纹理空域滤波的磨削表面粗糙度测量.pdfVIP

30 8 Vol. 30, No. 8 2010 8 ACTA OPTICA SINICA August, 2010 : 0253-2239(2010) 08-2324-05 基于散斑图纹理空域滤波的磨削表面粗糙度测量 汪庆花 卢荣胜 杨 蕾 雷丽巧 ( , 230009) , , (R ) a [ , , ( NMSID) ] , NM SID , ( ) , R a ; ; ; TP751. 2 A doi: 10. 3788/ AO2324 Grinding SurfaceRoughness Measurement Based on theSpatial Filtering of SpecklePattern Texture Wang Qinghua Lu Rongsheng Yang Lei Lei Liqiao ( Sc ool of In st rum ent Scien ce and Opto-Electron ics En gineering , Hefei Un iversit y of Tec n ology , Hef ei , An ui 230009, C in a ) Abstract Surface s eckle attern intensity distribution resulting from laser light scattering from a rough surface contains various information about the geometrical and hysical ro erties of the surface. A texture analysis method based on s atial filtering is used to analyze s eckle atterns of grinding surface. The feature arameters of s eckle texture with a good monotonicrelation relatedto thesurfaceroughness (R ) are extracted. The basic rinci le of the a texture analysis is to extract three ty es of vectors based on fractional Brownian motion model of window s eckle images, which are the normalized scale range vector, the normalized ixel air number vector, and the normalized multiscale intensity difference (NMSID) vector, then to make a NMSID vector transformation for s eckle