中文摘要：

针对CT图像,给出了一种三维表面重构的方法。首先用中值滤波的方法进行预处理后,根据曲率信息提取轮廓线上的特征点,然后按照最短对角线法进行连接,其中在选取上下轮廓线两点间最短距离时,采用欧式距离进行实现,同时为了使构造的三角形视觉效果较好,分别计算当前点角的余弦值,从中选择较小的。最后将该方法与原方法分别进行实验,验证了使用部分轮廓特征点也能实现三维表面重构,重构效果较为满意。

英文摘要：

a method of 3d surface reconstruction for CT images was proposed. The feature points on the contour are extracted based on the curvature information. Then feature points are connected based on the shortest diagonal method. When selecting the shortest distance between the up and down contour points,euclidean distance was used to achieve. At the same time,the smaller current point angle was choosen to make the structure of the triangular visual effected better. Finally,the experiments verified that using partial contour feature points also can realize 3d surface reconstruction,and the result is satisfactory.