Survey over Switching Filters for Salt & Pepper Noise Removal

Abstract

Switching filters for image salt & pepper noise removal have received considerable interests in recent years. Many switching median or mean filters have been developed. In this paper, a survey and comparative analysis are conducted among several newly developed switching filters. Their noise detection schemes are first analyzed and quantitatively assessed via two widely used measures, i.e., miss detection (MD) and false alarm (FA). Subsequently, several noise restoration ways are compared according to peak signal-to-noise ratio (PSNR).