彩色显微骨髓细胞图像噪声的自适应矢量中值滤波

提出了一种基于彩色图像噪声的自适应矢量中值滤波方法,可根据噪声干扰的情况自动选择滤波窗口的大小.首先,检测3×3窗口中矢量中值与其他矢量之间的平均距离,然后根据这个平均距离的大小来判断选择3×3窗口,或5×5窗口,或1×1窗口.当选择1×1窗口时,意味着滤波输出就是原图像的像素值.模拟实验显示,应用自适应矢量中值滤波器能有效地滤除彩色显微骨髓细胞图像的噪声,并能较好地保护边缘和细节,其性能较一般的矢量中值滤波方法要好.

An adaptive vector median filter for noise removal in the color microscopic image of cells in marrow

An adaptive vector median filter for removing the noise in the color image is designed and tested with the color microscopic image of cells in marrow. In the algorithm, first the average distance between vector median X_VM and all other vectors in a 3×3 window is computed and then noisy pixels are removed with adaptive selection of window size based on the average distance. When the window size is 1×1, the vector pixels should be unchangeable. The experiment with the color microscopic image of cells in marrow waw carried out and the results show that the filter can achieve a high degree of noise suppression and keeps the image sharpness. The adaptive vector median filter also shows a significant improvement over the regular vector median filter. The algorithm is rather simple to implement.