5.7逆滤波 FIGURE 5.1 A model of the 8(x,y) image f化，y)> Degradation Restoration 沉 filter(s) f(x.y) degradation/ restoration process. Noise n(x,y) DEGRADATION RESTORATION g(x,y)=f(x,y)h(x,y)+n(x,y) 空间域退化模型 g(x,y)=C[f(x,y)]+7(x,y) G(u,v)=F(u,)H(u,)+N(u,) 频率域退化模型 5.7 逆滤波 空间域退化模型 频率域退化模型 g(𝑥, 𝑦ሻ = 𝑓(𝑥, 𝑦ሻℎ(𝑥, 𝑦ሻ + 𝜂(𝑥, 𝑦ሻ 𝐺(𝑢, 𝑣ሻ = 𝐹(𝑢, 𝑣ሻ𝐻 𝑢, 𝑣 + 𝑁(𝑢, 𝑣ሻ