Application of UAV Tilt Photogrammetry in Nearshore Tidal Flat Elevation Survey
UAV tilt photogrammetry can quickly obtain multi-angle images of the ground,generate tilt 3D models,and use them to quick-ly obtain spatial coordinates. Its efficiency is better than traditional measurement. The field survey of nearshore tidal flat is affected by the time of rising and falling tide,the type of tidal flat and the area of operation,and the traditional elevation survey method is relatively difficult. This paper proposes a technical route of nearshore tidal flat elevation survey based on UAV tilt photogrammetry,which uses the UAV acquisition image to generate high-precision real-time 3D model as the basic data of nearshore tidal flat elevation survey,and uses the total station to measure the check points in the field to verify the accuracy,the error is better than 5cm,which meets the accuracy requirements of tidal flat el-evation survey.
oblique photographynearshore beach surveyelevation surveyrealistic 3D
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