3D Power Line Extraction from Multiple Aerial Images
Power lines are cables that carry electrical power from a power plant to an electrical substation. They must be connected between the tower structures in such a way that ensures minimum tension and sufficient clearance from the ground. Power lines can stretch and sag with the changing weather, event...
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doaj-28019959460c442db00d9a7eb8c26c062020-11-24T20:42:06ZengMDPI AGSensors1424-82202017-09-011710224410.3390/s17102244s171022443D Power Line Extraction from Multiple Aerial ImagesJaehong Oh0Changno Lee1Department of Civil Engineering, Chonnam National University, Gwangju 61186, KoreaDepartment of Civil Engineering, Seoul National University of Science and Technology, Seoul 01811, KoreaPower lines are cables that carry electrical power from a power plant to an electrical substation. They must be connected between the tower structures in such a way that ensures minimum tension and sufficient clearance from the ground. Power lines can stretch and sag with the changing weather, eventually exceeding the planned tolerances. The excessive sags can then cause serious accidents, while hindering the durability of the power lines. We used photogrammetric techniques with a low-cost drone to achieve efficient 3D mapping of power lines that are often difficult to approach. Unlike the conventional image-to-object space approach, we used the object-to-image space approach using cubic grid points. We processed four strips of aerial images to automatically extract the power line points in the object space. Experimental results showed that the approach could successfully extract the positions of the power line points for power line generation and sag measurement with the elevation accuracy of a few centimeters.https://www.mdpi.com/1424-8220/17/10/2244power linedronephotogrammetry3D mappingcubic grid points |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jaehong Oh Changno Lee |
spellingShingle |
Jaehong Oh Changno Lee 3D Power Line Extraction from Multiple Aerial Images Sensors power line drone photogrammetry 3D mapping cubic grid points |
author_facet |
Jaehong Oh Changno Lee |
author_sort |
Jaehong Oh |
title |
3D Power Line Extraction from Multiple Aerial Images |
title_short |
3D Power Line Extraction from Multiple Aerial Images |
title_full |
3D Power Line Extraction from Multiple Aerial Images |
title_fullStr |
3D Power Line Extraction from Multiple Aerial Images |
title_full_unstemmed |
3D Power Line Extraction from Multiple Aerial Images |
title_sort |
3d power line extraction from multiple aerial images |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2017-09-01 |
description |
Power lines are cables that carry electrical power from a power plant to an electrical substation. They must be connected between the tower structures in such a way that ensures minimum tension and sufficient clearance from the ground. Power lines can stretch and sag with the changing weather, eventually exceeding the planned tolerances. The excessive sags can then cause serious accidents, while hindering the durability of the power lines. We used photogrammetric techniques with a low-cost drone to achieve efficient 3D mapping of power lines that are often difficult to approach. Unlike the conventional image-to-object space approach, we used the object-to-image space approach using cubic grid points. We processed four strips of aerial images to automatically extract the power line points in the object space. Experimental results showed that the approach could successfully extract the positions of the power line points for power line generation and sag measurement with the elevation accuracy of a few centimeters. |
topic |
power line drone photogrammetry 3D mapping cubic grid points |
url |
https://www.mdpi.com/1424-8220/17/10/2244 |
work_keys_str_mv |
AT jaehongoh 3dpowerlineextractionfrommultipleaerialimages AT changnolee 3dpowerlineextractionfrommultipleaerialimages |
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1716823211306385408 |