Sectioned methods for image restoration
H.J. Trussell, B.R. Hunt · IEEE Transactions on Acoustics Speech and Signal Processing · 1978
Locally adaptive image processing methods are constructed by sectioning the image and applying a modified MAP restoration algorithm. These local algorithms are shown to be effective in processing nonstationary images. The algorithms can work in both signal-independent and signal-dependent noise. The gains achieved by local and signal-dependent processing are analyzed.