长江科学院院报2016，Vol.33Issue(11)：1-4,4.DOI:10.11988/ckyyb.20160811
双阈值Alpha Shapes算法提取点云建筑物轮廓研究
Extraction of Building Contour from Point Clouds Using Dual Threshold Alpha Shapes Algorithm
摘要
Abstract
To balance the contour accuracy and completeness of single threshold Alpha Shapes in extracting point cloud building contours, we present a dual-threshold Alpha Shapes algorithm using a simple ring design concept contour search algorithm to obtain both a good integrity and a relatively high geometric precision of the building'' s contour. Furthermore, the initial contour is simplified based on least squares algorithm. In the presence of noise, the simplified contour lines of the present algorithm are closer to the actual contours compared with the classic Douglas Peucker algorithm.关键词
LiDAR/建筑物轮廓提取/RANSAC/AlphaShapes算法Key words
LiDAR/building boundaries extraction/RANSAC/Alpha Shapes algorithm分类
天文与地球科学引用本文复制引用
李云帆,谭德宝,高广,刘瑞..双阈值Alpha Shapes算法提取点云建筑物轮廓研究[J].长江科学院院报,2016,33(11):1-4,4.基金项目
中央级公益性科研院所基本科研业务费项目(CKSF2014031/KJ) （CKSF2014031/KJ）
云南省水利重大科技项目(CKSK2015852/KJ) （CKSK2015852/KJ）
