三角化程序实例，可以将散点坐标拼接起来，得到物体表面的三维轮廓-Triangulation process instance, scatter coordinates can be pieced together, get three-dimensional contours on the surface of the object

读取excel文件，根据其中的坐标复原表面的轮廓的信息-Read the excel file, according to the coordinates on the surface of the restoration contour information