US 7,321,839 B2 | ||
Method and apparatus for calibration of camera system, and method of manufacturing camera system | ||
Kenichi Maeda, Kanagawa (Japan); Yasuhiro Taniguchi, Cambridge, Mass. (US); Susumu Kubota, Kanagawa (Japan); and Hiroaki Nakai, Kanagawa (Japan) | ||
Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
Filed on Aug. 28, 2006, as Appl. No. 11/510,583. | ||
Application 11/510583 is a division of application No. 10/704550, filed on Nov. 12, 2003, granted, now 7,124,046. | ||
Claims priority of application No. 2002-346914 (JP), filed on Nov. 29, 2002; and application No. 2003-324615 (JP), filed on Sep. 17, 2003. | ||
Prior Publication US 2007/0005293 A1, Jan. 04, 2007 | ||
Int. Cl. G01C 25/00 (2006.01); G01D 18/00 (2006.01) |
U.S. Cl. 702—104 [702/152] | 21 Claims |
1. A method for calibration of a stereo camera system that uses a plurality of cameras, comprising;
disposing a first mirror and a second mirror in such a manner that reflective surfaces of the first mirror and the second
mirror face toward each other;
placing at least two marks on a reference plane between the reflective surface of the first mirror and the reflective surface
of the second mirror so that a plurality of reflected figures of the each mark are generated by the first mirror and the second
mirror, the reference plane used in processes performed by the stereo camera system;
capturing with the cameras an image including the plurality of the reflected figures of the each mark;
determining position of the reflected figures in each of the images, wherein the position of each of the reflected figures
is represented by a pair of coordinates; and
calculating projective transformation parameters for planar projection stereopsis method by using the position of the reflected
figures.
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