Sira Ferradans, Marcelo Bertalmío, and Vicent Caselles.
Demosaicking is a particular case of interpolation problem where, from a scalar image in which each pixel has either the red, the green or the blue component, we want to interpolate the full-color image. State of the art demosaicking algorithms perform interpolation along edges, but these edges are estimated locally. We propose a level-set based geometric method to estimate image edges, inspired by the image inpainting literature. This method has a time complexity of O(S), where S is the number of pixels in the image, and compares favorably with the state of the art algorithms both visually and in most relevant image quality measures.
and Results for the Kodak database