倾斜航空摄影技术在茂密植被山区地质灾害调查中的应用

Application of oblique aerial photography technology in the geological hazard investigation in dense vegetation mountainous areas

为提升茂密植被山区地质灾害调查效率和精度,利用倾斜航空摄影技术,获取了影像数据。通过匀光匀色处理与定位系统(positioning system,POS)预处理山区影像数据,基于多视图匹配经典(photometric multi-view stereo,PMVS)算法密集匹配茂密植被山区影像,完成了山区三维重建,建立了地质灾害的解译标志。通过计算机辅助解译方式,完成了茂密植被山区地质灾害调查。实验数据表明:在不同实验工况背景下,倾斜航空摄影技术应用后的山区影像数据完整度更高,山区地质灾害调查的精度更大,充分证实了倾斜航空摄影技术具备较好的应用效果。研究成果对山区地质灾害调查具有指导意义,可为山区地质灾害的识别调查、风险评估和防控方案的制定提供科学参考。

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.