A more complicated curvature would be like a function that inputs an entry point and returns one of several local lowest points.
更为复杂的曲率将类似于一个函数,它输入一个入口点并返回几个局部最低点中的其中之一。
3
In this paper, we first polygonize the scattered data points, then estimate the normal vector and curvature of each point using the local presentation of data points.