VARIANCE FORMULA OF MULTI-VIEW TRIANGULATION FOR EVALUATING MAXIMUM PRECISION OF UAV-BASED PHOTOGRAMMETRY

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  • UAV写真測量の上限精度の目安としての多視点三角測量の分散評価式

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<p> This study theoretically derived formulae defining the upper limit of precision in estimating three dimensional coordinates by UAV-based photogrammetry under simplified conditions. These formulae evaluate the horizontal and vertical variances of multi-view triangulation (the principle of coordinate estimations for both point cloud and validation points) as functions of flight-design variables such as image resolution, focal length, camera altitude, and overlapping ratios. They can be used for a preliminary check to avoid flight designs that will never meet the desired precision.</p>

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