Method for producing ortho image, orthographic image forming system, three-dimensional model creating method, three-dimensional model creation system and label used therein

摘要

Problem to be solved: to provide a method and a system for easily investigating road conditions based on a photographing image taken from the sky even when a part of the road surface is covered with an obstacle.The method isA part of the road surface covered with obstacles is obtained by taking a plurality of first photographing images from a height higher than the obstacleGet multiple second images from a lower altitude than the obstacleThe three-dimensional coordinates of the first characteristic points included in at least two of the first photographed images are obtained in addition to the areas covered by obstacles andThe three-dimensional coordinates of the second feature points included in the areas covered by obstacles and at least two plurality of second photographed images are acquired.Based on the multiple coordinates of the first and second photographed images and the first and second feature pointsPart of the area covered by obstaclesA corrected ortho image corrected to an area not covered with an obstacle is formed.Diagram