GROUND CONTROL POINT GENERATION DEVICE, IMAGE PROCESSING SYSTEM, GROUND CONTROL POINT GENERATION METHOD, IMAGE PROCESSING METHOD, GROUND CONTROL POINT GENERATION PROGRAM, AND IMAGE PROCESSING PROGRAM
To provide a ground control point with high accuracy in a height direction over a wide range.SOLUTION: A ground control point generation device 100 generates ground control point data using a reference image and terrain data. An object detection unit 10 outputs an object class and pixel coordinates...
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Main Authors | , |
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Format | Patent |
Language | English Japanese |
Published |
01.12.2023
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Subjects | |
Online Access | Get full text |
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Summary: | To provide a ground control point with high accuracy in a height direction over a wide range.SOLUTION: A ground control point generation device 100 generates ground control point data using a reference image and terrain data. An object detection unit 10 outputs an object class and pixel coordinates for an object installed at a height approximately equal to the average elevation of the surrounding land. A small area image extraction unit 20 extracts a small area image in the reference image from the pixel coordinates of the object. An on-map coordinate acquisition unit 30 acquires on-map coordinates of the object using a correspondence relationship between the reference image and the on-map coordinates. A height acquisition unit 40 acquires the height of the object by referring to the terrain data corresponding to the pixel coordinates of the object. A data registration unit 50 registers the ground control point data in which the small area image is associated with three-dimensional coordinates composed of the on-map coordinates and the height of the object.SELECTED DRAWING: Figure 1
【課題】広範囲にわたって高さ方向の精度が良い地上基準点を得る。【解決手段】地上基準点生成装置100は、リファレンス画像と地形データとを用いて、地上基準点データを生成する。対象物検出部10は、周囲の土地の平均標高に概ね等しい高さに設置されている対象物について、対象物クラスと画素座標とを出力する。小領域画像抽出部20は、対象物の画素座標から、リファレンス画像における小領域画像を抽出する。地図上座標取得部30は、リファレンス画像と地図上座標の対応関係を用いて対象物の地図上座標を取得する。高さ取得部40は、対象物の画素座標に対応する地形データを参照することで対象物の高さを取得する。データ登録部50は、小領域画像と、対象物の地図上座標および高さからなる三次元座標とを紐付けた地上基準点データを登録する。【選択図】図1 |
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Bibliography: | Application Number: JP20220081838 |