Patent Document ID: 9182220
Application ID: 13256543
Patent Status: 1

Claim One:
1. An image photographing device for three-dimensional measurement for sequentially photographing a measuring object in an overlapping manner with a single camera, the image photographing device comprising: a photographing section configured to photograph the measuring object to which marks having self-other identifiable identification codes are affixed in a predetermined condition; a mark extraction section configured to extract the marks from a photographed image photographed by the photographing section; a code identification section configured to identify the identification codes of the marks extracted by the mark extraction section and correlating the identification codes with mark symbols provided to the marks; a photographed area defining section configured to identify the mark symbols of the marks in the photographed image extracted from positions in a screen with the identified identification codes and to define and divide an area of the measuring object in the photographed image into photographed areas each of which is surrounded by at least three marks (each of the areas including the at least 3 marks) with identified mark symbols, and each of divided photographed areas does not overlap each other; an area photographing time number counting section configured to count a number of photographing times of each of the photographed areas which are involved in different photographed images; a photographed area grouping section configured to group the photographed areas divided into at least two groups in response to the number of photographing times of each of the photographed areas by the photographed area defining section; a mark data inputting section configured to input positions of the marks affixed to the measuring object in a coordinate space of a photographing range image for expressing a photographing range of the measuring object in a two-dimension or three-dimension space while correlating the positions of the marks with the mark symbols; a photographing range image formation section configured to connect the positions of the marks input in the photographing range image such that the mark symbols of the marks surrounding each of the photographed areas correspond to each other and thereby matching the photographed areas into the photographing range image; and a display section configured to display the photographed areas matched into the photographing range image such that the photographed areas are grouped into the at least two groups, wherein the area photographing time number counting section is configured to count the number of times of successful extractions of all the marks surrounding the photographed area as the number of photographing times of the photographed area.