A Two Stage Dynamic Trilateral Filter Removing Impulse plus Gaussian Noise

Noise detection and Image restoration is a Universal research phenomena. There are number of existing techniques in terms of Noise Filters. Two of them are Trilateral filter proposed by Garnett, Huegerich and Chui [13] , and Dong, Raymond H. Chan, and Shufang Xu [17] are based on two types of Noise Model additive Gaussian noise and impulse noise, and there combination called mixed noise. Garnett, Huegerich and Chui introduce the ROAD (“Rank-ordered Absolute Differences”) statistic into many existing filtering techniques, allowing them to detect and properly handle impulse-like pixels in a noisy image.