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| Application of oblique aerial photography technology in the geological hazard investigation in dense vegetation mountainous areas |
| WANG Wentao |
| Geological Bureau of Jiangsu Province, Jiangsu Nanjing 210018, China |
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Abstract In order to improve the efficiency and accuracy of geological hazard investigation in dense vegetation mountainous areas, the author used oblique aerial photography technology to obtain its image data. The mountainous area image data were preprocessed through uniform light and color processing positioning system (POS). On the basis of photometric multi-view stereo (PMVS) algorithm, dense matching of dense vegetation mountainous area images was achieved. The three-dimensional reconstruction of the mountainous area was completed, and the interpretation criteria for geological hazards were established. Geological hazard investigation in dense vegetation mountainous areas was completed through computer-aided interpretation method. The experimental data show that under different experimental conditions, the integrity of mountainous image data and the accuracy of geological hazard investigation are higher after the application of oblique aerial photography technology, indicating its good application effect. The research results have some guiding significance for geological hazard investigation in mountainous areas, and could provide scientific references for the identification and investigation, risk assessment, and formulation of prevention and control plans of geological hazards in mountainous areas.
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Received: 20 July 2023
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2024, Vol. 11 
