An algorithm of LiDAR building outline extraction by Delaunay triangle

Nie Yu-ze; Cheng Ying-lei; Qiu Lang-bo; He Man-yun; Zhao Zi-hao; Pu Lei

doi:10.1117/12.2245279

29 August 2016 An algorithm of LiDAR building outline extraction by Delaunay triangle

Nie Yu-ze, Cheng Ying-lei, Qiu Lang-bo, He Man-yun, Zhao Zi-hao, Pu Lei

Proceedings Volume 10033, Eighth International Conference on Digital Image Processing (ICDIP 2016); 1003302 (2016) https://doi.org/10.1117/12.2245279
Event: Eighth International Conference on Digital Image Processing (ICDIP 2016), 2016, Chengu, China

Abstract

Based on Delaunay triangular mesh method, a LiDAR point cloud building edge extraction algorithm is put forward in this paper. First of all, filter LiDAR point cloud and extract the building points. Then establish a triangular mesh according to Delaunay method, and calculate the length of each triangular mesh, to get an average side length. Taking the average side length as threshold, when a triangle’s side length exceeds the threshold, its three points are considered as edge points. In this triangle, the short side is usually the building edge outline, whose length is less than the threshold. After linking the short side, the building edge circuit is obtained. Since building usually occupies larger space than the other surface features, the circuit with more points is kept, and then the building outline of building can be formed by using pipe algorithm for normalization. The processing result on the experimental airborne LiDAR point cloud data shows that the algorithm can extract the building edge quickly and efficiently from LiDAR point cloud data.

Citation Download Citation

Nie Yu-ze, Cheng Ying-lei, Qiu Lang-bo, He Man-yun, Zhao Zi-hao, and Pu Lei "An algorithm of LiDAR building outline extraction by Delaunay triangle", Proc. SPIE 10033, Eighth International Conference on Digital Image Processing (ICDIP 2016), 1003302 (29 August 2016); https://doi.org/10.1117/12.2245279

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available