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 t