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为了进一步提高开关型矢量中值滤波器滤除脉冲噪声尤其是细微噪声的能力,提出了一种基于颜色分量单独噪声检测的开关型标量和矢量混合中值滤波器(SVHMF)。与其它经典矢量滤波器相比,SVHMF最大的不同在于它是根据对像素点各个颜色单独进行噪声检测的结果,采用与之相适应的标量和矢量混和滤波方法。新滤波器可以最大限度地保护彩色图像图像像素中未被噪声干扰的颜色分量数据,从而可以进一步提高滤波效果。实验数据表明:SVHMF的滤波效果明显优于其它各类在彩色图像降噪中得到广泛应用的矢量中值滤波器。
In order to further improve the ability of switched mode vector median filter to filter out impulse noise, especially subtle noise, a switch-based scalar and vector mixed median filter (SVHMF) based on color component independent noise detection is proposed. Compared with other classical vector filters, SVHMF biggest difference is that it is based on the individual pixels for each color noise detection results, with the appropriate scalar and vector hybrid filtering method. The new filter maximizes the noise-free color component data in the pixels of the color image, thereby further improving the filtering performance. Experimental results show that SVHMF has better filtering performance than other vector median filters widely used in color image noise reduction.