PHOTOGRAPHING APPARATUS

摘要

PROBLEM TO BE SOLVED: To automatically acquiring the height of an object to be sensed by specifying the object to be sensed in a two-dimensional image acquired by one camera.

SOLUTION: A master camera 2 two-dimensionally photographs both a reference plane 4 in a three-dimensional space and the object to be sensed in the reference plane. The object to be sensed is determined on the basis of a two-dimensional image of the camera 2. Both first two-dimensional coordinates of the image of the object to be sensed in a two-dimensional reference plane 4a corresponding to a reference plane 4 in the two-dimensional image and second two-dimensional coordinates of the object to be sensed at a distance from the two-dimensional reference plane 4a on the basis of the two-dimensional coordinates are determined by a personal computer 8. The personal computer 8 converts the first two-dimensional coordinates into first three-dimensional coordinates in a reference plane 4 in a three-dimensional space and converts the second coordinates into second three-dimensional coordinates. The conversion into the second three-dimensional coordinates is performed by arranging the location of a first or second three-dimensional coordinate axis in the second three-dimensional coordinates at the location of first or second three-dimensional coordinates of the first three-dimensional coordinates.

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