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

摘要： 依据模糊综合评判原理提出一种保持彩色图像细节的模糊矢量中值滤波算法。该算法设置一个可在保持图像细节与去噪能力上进行权衡的参数，并基于中值矢量在模长、辐角等方面的特性，计算矢量处于“中间”状态的隶属度来确定中值矢量。该隶属度为图像的细节保护提供分析基础。与同类矢量滤波算法相比较，该算法在运行速度上有明显优势，具有保护图像细节性好、去噪能力强等优点。

关键词: 矢量中值滤波, 模糊综合评判, 椒盐噪声