摘要
在三角形贴面表面重建中，选择轮廓线上哪些点作为重建点，一方面决定重建的质量，另一方面决定重建的速度。本文提出了一种保持形状特征的变分辨率轮廓点采样算法。首先，建立了本算法的数学模型，我们认为离弧对应的弦距离最大的点可作为一个形状特征点。其次，利用二叉树数据结构递归实现了该算法。本算法具有保持轮廓形状特征、根据形状复杂度自适应决定采样频率、编程简单等优点。
During three dimensional(3D) surface reconstruction from serial sections,which points are se-lected as reconstruction point decides not only the reconstructed surface quality,but also the reconstruction time.In this paper we present a varing resolution and shape keeping contour sampling algorithm. Firstly,the mathematical model was built.The point which is farest away from the chord is regared as a shape characteristic point.Then,a bitree data structure is used to recursively realize the algorithm.The algorithm has such advandage askeeping shape,adaptively deciding the sampling frequency based on the shape complexity,easy programming etal.
出处
《中国医学物理学杂志》
CSCD
1996年第4期205-207,共3页
Chinese Journal of Medical Physics
