说明：  将dcm格式的文件读入，并对其进行重构滤波，消除与结构元素相比较小的的次要细节。而保持图像整体灰度值和大的区域基本不受影响。
(Dcm file format will be read, and its reconstructed filter to remove small compared with the structural elements of the minor details. While maintaining the overall gray value image and the large area were not affected.)