To provide a method and system which easily examine the road state based on a photographed image captured from the sky even when a part of the road surface is covered by an obstacle.SOLUTION: A method acquires a plurality of first photographed images by photographing a road in which a part of the road surface is covered by an obstacle from the higher altitude than the obstacle, acquires a plurality of second photographed images from the lower altitude than the obstacle, acquires the three-dimensional coordinates of the first feature point existing outside a region covered by the obstacle and included in at least two of the first photographed images, acquires the three-dimensional coordinates of the second feature point existing in the region covered by the obstacle and included in at least two of the second photographed images, and creates a corrected ortho-image obtained by correcting a part of the region covered by the obstacle to a region not covered by the obstacle on the basis of the first and second photographed images and the three-dimensional coordinates of the first and second feature points.SELECTED DRAWING: Figure 5
【課題】道路表面の一部が障害物により覆われている場合でも、上空から撮影した撮影画像に基づいて道路状態を容易に調査する方法及びシステムを提供する。【解決手段】方法は、道路表面の一部が障害物により覆われた道路を障害物より高い高度から複数の第1撮影画像を取得し、障害物より低い高度から複数の第2撮影画像を取得し、障害物により覆われた領域以外にあり且つ少なくとも2枚の複数の第1撮影画像に含まれた第1特徴点の3次元座標を取得し、障害物により覆われた領域にあり且つ少なくとも2枚の複数の第2撮影画像に含まれた第2特徴点の3次元座標を取得し、複数の第1および第2撮影画像と第1および第2特徴点の3次元座標とに基づいて、障害物により覆われた領域の一部を、障害物に覆われてない領域に補正した補正オルソ画像を作成する。【選択図】図5
ORTHO-IMAGE CREATION METHOD, ORTHO-IMAGE CREATION SYSTEM, THREE-DIMENSIONAL MODEL CREATION METHOD, THREE-DIMENSIONAL MODEL CREATION SYSTEM AND MARK USED THEREIN
オルソ画像作成方法、オルソ画像作成システム、3次元モデル作成方法、3次元モデル作成システム及びそれに使用される標識
2021-05-27
Patent
Electronic Resource
Japanese
IPC: | G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS |
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