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Remote Sens. 2016, 8(3), 243; doi:10.3390/rs8030243

A Stochastic Geometry Method for Pylon Reconstruction from Airborne LiDAR Data

1
Key Laboratory for Geo-Environment Monitoring of Coastal Zone of the National Administration of Surveying, Mapping and GeoInformation & Shenzhen Key Laboratory of Spatial Smart Sensing and Services, Shenzhen University, Nanhai Road 3688, Shenzhen 518060, China
2
College of Information Engineering, Shenzhen University, Nanhai Road 3688, Shenzhen 518060, China
3
The State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road 129, Wuhan 430079, China
4
Collaborative Innovation Center of Geospatial Technology, Wuhan University, Luoyu Road 129, Wuhan 430079, China
*
Authors to whom correspondence should be addressed.
Academic Editors: Richard Gloaguen and Prasad S. Thenkabail
Received: 17 December 2015 / Revised: 3 March 2016 / Accepted: 7 March 2016 / Published: 15 March 2016
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Abstract

Object detection and reconstruction from remotely sensed data are active research topic in photogrammetric and remote sensing communities. Power engineering device monitoring by detecting key objects is important for power safety. In this paper, we introduce a novel method for the reconstruction of self-supporting pylons widely used in high voltage power-line systems from airborne LiDAR data. Our work constructs pylons from a library of 3D parametric models, which are represented using polyhedrons based on stochastic geometry. Firstly, laser points of pylons are extracted from the dataset using an automatic classification method. An energy function made up of two terms is then defined: the first term measures the adequacy of the objects with respect to the data, and the second term has the ability to favor or penalize certain configurations based on prior knowledge. Finally, estimation is undertaken by minimizing the energy using simulated annealing. We use a Markov Chain Monte Carlo sampler, leading to an optimal configuration of objects. Two main contributions of this paper are: (1) building a framework for automatic pylon reconstruction; and (2) efficient global optimization. The pylons can be precisely reconstructed through energy optimization. Experiments producing convincing results validated the proposed method using a dataset of complex structure. View Full-Text
Keywords: 3D reconstruction; pylon; point cloud; stochastic models; Monte Carlo simulations 3D reconstruction; pylon; point cloud; stochastic models; Monte Carlo simulations
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Guo, B.; Huang, X.; Li, Q.; Zhang, F.; Zhu, J.; Wang, C. A Stochastic Geometry Method for Pylon Reconstruction from Airborne LiDAR Data. Remote Sens. 2016, 8, 243.

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