Filtering Algorithm for Color Images Based on Noise Detection

As to the color images corrupted by impulse noise,we propose filtering algorithms for color images based on noise detection.Firstly,an impulse detector is presented to find out all pixels that are considered as noise before filtering.Then,if a pixel is considered as noise,it will be replaced by a pixel in the neighborhood which is noise-free during filtering procedure later.Otherwise,it is unchanged.The self-adaptive algorithm based on similarities is improved as the filtering algorithms later.As demonstrated by the extensive experimental results,all the proposed filtering methods compare favorably with conventional techniques in the capabilities of noise attenuation and details preservation,in both quantitative and qualitative measures.