3 Image Enhancement 3.4 Fundamentals of spatial filtering Filter(滤波器) Mask(掩模) Kernel(核) Template(模板) Window(窗口) .y g(x,y)=1(-1,-1)f(x-1y-1)+w(-1,0)f(x-1,y)+.+w(0,0)f(x,y)+.+(1,0)f(x+1y)+w1,1)fx+1,y+1）3 Image Enhancement 3.4 Fundamentals of spatial filtering Filter (滤波器) Mask (掩模) Kernel (核) Template (模板) Window (窗口) g x y w f x y w f x y w f x y w f x y w f x y ( , ) ( 1, 1) ( 1, 1) ( 1,0) ( 1, ) ... (0,0) ( , ) ... (1,0                 ) ( 1, ) (1,1) ( 1, 1)