Nonlocal Mumford-Shah Regularizers for Color Image Restoration
Nonlocal Mumford-Shah Regularizers for Color Image Restoration
We propose here a class of restoration algorithms for color images, based upon the Mumford-Shah (MS) model and nonlocal image information. The Ambrosio-Tortorelli and Shah elliptic approximations are defined to work in a small local neighborhood, which are sufficient to denoise smooth regions with sharp boundaries. However, texture is nonlocal …