Image origin FIGURE 3.32 The mechanics of spatial filtering. The magnified drawing shows a 3×3 mask and the image section directly under it: Mask the image section is shown displaced out from under the mask for ease of readability. m-1, w-10 -L, Imagef(x.y) 0-1j 00国 8.1 gx,)= 1.-1j 如10 1. w(-1,-Dωfx-1,y-D)+ fix-1y-1) fx-L月 -1y+1) coordinate arraneement W(-1,0)fx-1y)+… f(s.y-1) 八红划 f3+1) +0,0)fxy)+…+ R+Ly-1] 几x+1列 3+1y+1 L,0)fx+1,y)+ w(1Dfx+1y+D) Pix国s of image scction under描a建 55 (, ) ( 1, 1) ( 1, 1) ( 1,0) ( 1, ) (0,0) ( , ) (1,0) ( 1, ) (1,1) ( 1, 1) gxy w fx y w fx y w f xy w fx y w fx y                 UESTC-RSIP