| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve estimation accuracy of a camera attitude and reduce a processing load. <P>SOLUTION: A three-dimensional coordinate acquisition device 100 acquires three-dimensional coordinates of a three-dimensional object that are used when the attitude of a camera is estimated from a photographed image of the three-dimensional object photographed by the camera. The three-dimensional coordinate acquisition device includes: a feature point detecting unit 111 that detects a feature point in an image plane from the photographed image; and a three-dimensional coordinate acquisition unit 113 that calculates an intersection of a straight line that passes through a focal point of the camera and the feature point in the image plane and the three-dimensional object, from an equation of the straight line and an equation of the three-dimensional object, and acquires the three-dimensional coordinates of the feature point. <P>COPYRIGHT: (C)2013,JPO&INPIT |
