电子转发女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC 5,1 Model of Image Degradation/Restoration ■ Linear,position-invariant process g(x.y)=h(x,y)*f(x,y)+n(x.y) G(u,v)=H (u,v)F(u,v)+N(u,v) FIGURE 5.1 A model of the Degradation 8(x,y) image f(x,y) Restoration function f(x,y) degradation/ H filter(s) restoration process. Noise n(x,y) DEGRADATION RESTORATION5.1 Model of Image Degradation/Restoration ◼ Linear, position-invariant process g x y h x y f x y x y ( , , , , ) =  + ( ) ( )  ( ) G u v H u v F u v N u v ( , , , , ) = + ( ) ( ) ( )