| 基于八叉树的三维散乱数据点的法矢的估计 |
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| 引用本文： | 李泽宇,李德华.基于八叉树的三维散乱数据点的法矢的估计[J].计算机与数字工程,2000,28(4):62-65,44. |
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| 作者姓名： | 李泽宇 李德华 |
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| 作者单位： | [1]图像信息处理与智能控制国家教委开放实验室 [2]华中理工大学图象处理与人工智能研究所 |
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| 基金项目： | 国家自然科学基金(69775022) |
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| 摘 要： | 提出了一种基于八叉树的三维散乱数据点法矢估计的方法。该方法利用八叉树来建立散乱点之间的几何拓扑关系，从而可以方便，快速地搜索散乱点的ｍ领域点集。并引入阈值Ｔｈ来消除噪声的影响。计算这ｍ个领域点与该点组成的相交于该点的ｍ－１个三角形的法矢的均值，并作为该点法矢的估计。
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| 关 键 词： | 八叉树 法矢 三维散乱数据点 数据结构 |
Estimation of Normal Vector of 3 - D Scattered Point Based on Octree |
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| Li Zeyu Li Dehua Ho Hanping Chen Zhenyn.Estimation of Normal Vector of 3 - D Scattered Point Based on Octree[J].Computer and Digital Engineering,2000,28(4):62-65,44. |
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| Authors: | Li Zeyu Li Dehua Ho Hanping Chen Zhenyn |
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| Abstract: | This article presents a method of estimation of normal vector of 3 - D scattered points based on octree. The toplogical relation among scattered points is built using octree,so we can search the set of m adjacent field points fastly and simply. A threshold value Th is introduced to eliminate the noise influence. The average value of m adjacent points and the normal vector of m - 1 triangle formed and intersected by the points is a imputed, and regarded as the estimation of that point normal vector. |
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| Keywords: | octree 3 - D scattered points normal vector m adjacent field points |
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