关键词: 矢量中值滤波, 模糊综合评判, 椒盐噪声

Abstract: A fuzzy vector median filtering algorithm that retains texture information of color images is proposed based on the principle of fuzzy comprehensive evaluation.A parameter in this algorithm is provided to balance between the ability of keeping texture information and the ability of denoising.According to characterization of length and argument of a vector，a median vector is determined through setting down the membership degree of vectors which are at the median state.The membership degree provides an analytic tool for retaining texture information of color images.This algorithm takes advantages of lower computing cost，retaining texture information，enhanced ability of denoising，and no new chromaticity produced in comparison with other vector median filtering algorithms.

Key words: vector median filter, fuzzy comprehensive evaluation, salt &, pepper noise