Restoration of Highly Impulses Corrupted Color Image by Local Entropy Measure

Abstract

This paper proposes an effective scheme using local entropy measure to restore highly salt-pepper impulses up to 99% corrupted colour image. A local information measure to restore impulses corrupted image had been proposed before. Its restoration quality is not satisfactory at high impulse densities. The proposed algorithm presents significant quality of restored image than above proposed method not only for grey images but also for colour images. In addition, its preservation of edges and details is superior at high impulse densities, also, this scheme presents good empirical results by both the visual quality and quantitative performances in terms of peak signal to noise ratio (PSNR) and normalized colour difference (NCD) .