To provide a ground surface estimation method, a measurement area display system, and a crane with which, even when the height of ground surface fluctuates due to inclination and irregularity, it is possible to recognize as a continuous ground surface.SOLUTION: Provided is a ground surface estimation method comprising: a grid generation processing step for dividing a measurement area KA into a plurality of grids g by a data processing unit 70 that processes point cloud data P by computation, calculating the center of gravity position of the grid g and the average altitude value H of point cloud data P within the grid g, and setting the center of gravity position at the average altitude value H as the position of representative point pr per grid g; a continuous area recognition step for recognizing that, when a difference in altitude value between the representative point pr of one grid g and the representative point pr of an other grid g adjacent thereto out of the plurality of grids g is smaller than or equal to a threshold, the one grid g and the other grid g constitute a continuous area; and a ground surface estimation step for estimating a continuous area in which the number of grids g is largest among the continuous areas as a ground surface F.SELECTED DRAWING: Figure 9
【課題】傾斜や凹凸によって地表面の高さが変動していても連続した地表面として認識できる地表面推定方法、計測領域表示システムおよびクレーンを提供する。【解決手段】点群データPを演算処理するデータ処理部70によって、計測領域KAを複数のグリッドgに分割し、グリッドg毎に、当該グリッドgの重心位置と当該グリッドg内の点群データPの平均標高値Hとを算出し、平均標高値Hにおける重心位置をグリッドg毎の代表点prの位置として設定するグリッド生成処理工程と、複数のグリッドgのうち、一のグリッドgの代表点prと隣接する他のグリッドgの代表点prとの標高値の差が閾値以下であれば、一のグリッドgと他のグリッドgとが連続する領域である連続領域として認識する連続領域認識工程と、連続領域のうち、最もグリッドgの数が多い連続領域を地表面Fと推定する地表面推定工程と、を備える、ことを特徴とする地表面推定方法。【選択図】図9
GROUND SURFACE ESTIMATION METHOD, MEASUREMENT AREA DISPLAY SYSTEM, AND CRANE
地表面推定方法、計測領域表示システムおよびクレーン
18.06.2020
Patent
Elektronische Ressource
Japanisch
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