Television – Monitoring – testing – or measuring – Testing of camera
Reexamination Certificate
2006-04-04
2006-04-04
Yenke, Brian P (Department: 2614)
Television
Monitoring, testing, or measuring
Testing of camera
C348S175000, C348S176000, C348S180000, C348S188000, C348S223100, C348S251000
Reexamination Certificate
active
07023472
ABSTRACT:
An imaging device is calibrated using a flat, featureless surface and uniform illumination, relying on the effect of off-axis illumination and vignetting on the reduction of light into the camera at off-axis angles. The effect of the tilt of the camera is also considered. These effects are used to extract intrinsic camera parameters including focal length, principal point, aspect ratio and skew.
REFERENCES:
patent: 4435727 (1984-03-01), Schiller
patent: 4544952 (1985-10-01), Van Chang
patent: 4887123 (1989-12-01), Wally et al.
patent: 4962425 (1990-10-01), Rea
patent: 5084772 (1992-01-01), Shimoyama
patent: 5136388 (1992-08-01), Sano et al.
patent: 5181098 (1993-01-01), Guerin et al.
patent: 5193124 (1993-03-01), Subbarao
patent: 5231472 (1993-07-01), Marcus et al.
patent: 5241372 (1993-08-01), Ohba
patent: 5351201 (1994-09-01), Harshbarger, Jr. et al.
patent: 5434902 (1995-07-01), Bruijns
patent: 5444481 (1995-08-01), Oshima
patent: 5467128 (1995-11-01), Yates et al.
patent: 5675380 (1997-10-01), Florent et al.
patent: 5699440 (1997-12-01), Carmeli
patent: 5757425 (1998-05-01), Barton et al.
patent: 5821993 (1998-10-01), Robinson
patent: 5909027 (1999-06-01), Ohura et al.
patent: 6016161 (2000-01-01), Robinson
patent: 6028606 (2000-02-01), Kolb et al.
patent: 6044181 (2000-03-01), Szeliski et al.
patent: 6052124 (2000-04-01), Stein et al.
patent: 6122013 (2000-09-01), Tamir et al.
patent: 6597816 (2003-07-01), Altunbasak et al.
Tsai, Roger Y., “A Versatile Camera Calibration Technique for High-Accuracy 3D Machine Vision Metrology Using Off-the-Shelf TV Cameras and Lenses,” IEEE Journal of Robotics and Automation, vol. RA-3, No. 4, Aug. 1987, pp. 323-347.
Stein, G.P., “Accurate Internal Camera Calibration using Rotation, with Analysis of Sources of Error,” International Conference on Computer Vision, Cambridge, MA, Jun. 1995, pp. 230-236.
Movrovlis, P., et al., Geometrical Optics and Optical Design, Oxford University Press, 1997, pp. 130-131, 284.
Kang Sing Bing
Weiss Richard S.
Lange Richard P.
Yenke Brian P
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