Patent ID: 7228005

Claim:
A method for restoration of an image acquired by an electro-optical imaging system to enhance the image details using an adaptive Wiener filtering scheme, the method comprising: computing the Fourier transform of an optical transfer function, H n (u,v), of said electro-optical imaging system; computing the Fourier transform of a spatial representation of the image, G n (u,v); computing the Fourier transform of a noise function of said electro-optical imaging system, N n (u,v); computing the Fourier transform of a Wiener kernel, W n (u,v), according to the relationship: W n ⁡ ( u , v ) = 1 H n ⁡ ( u , v ) ⁢ ( 1 - N n 2 ⁡ ( u , v ) G n 2 ⁡ ( u , v ) ) ; computing the Wiener kernel, w n (x,y), in the spatial domain by applying the inverse Fourier transform: w n (x,y)=F −1 (W n (u,v)), where w n (x,y) is subject to the constraint: w n ⁡ ( x 0 , y 0 ) + ∑ i , j = ⌊ - n / 2 ⌋ ⌊ n / 2 ⌋ ⁢ w n ⁡ ( x i , y j ) = 1 ; and applying the Wiener kernel in the spatial domain, w n (x,y), to said image.