Abstract:
To solve the disadvantage in protecting image details of the traditional median filtering effectively,an improved median filtering algorithm is proposed.The pixel in filter window is divided into several blocks,the treated values are selected as medium values.The image edge pixels are expanded to horizontal and vertical,which improve the image edge information.This algorithm is applied to the medical image,and the experimental results are compared with other algorithm,which proves the effectiveness of this algorithm,the noise is removed and the detail of the image is protected at the same time.