Three-dimensional calibration using orientation and position...

Details Three-dimensional calibration using orientation and position... Three-dimensional calibration using orientation and position...

2004-12-22

2009-11-24

Safaipour, Houshang (Department: 2625)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S493000, C358S406000, C358S497000

Reexamination Certificate

active

07623274

ABSTRACT:
Systems and methods using an orientation/position-sensitive calibration pattern for three-dimensional calibration of an imaging system, such as one used in a process for scanning documents are disclosed. The method generally includes positioning the pattern on a support, capturing images using cameras to be calibrated, each image containing at least a unique orientation and position sensitive sub-area of the pattern, determining a set of coordinate pairs of corresponding points in the image and the pattern for each image utilizing image data and pattern information, and performing optimization utilizing the sets of coordinate pairs to calibrate relative position, orientation, zoom, and/or lens distortion, etc. of each camera so as to construct a three-dimensional camera calibration model. The pattern is generally comprised of overlapping sub-areas of a minimum portion of the pattern.

REFERENCES:
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patent: 6345763 (2002-02-01), Matsuda et al.
patent: 6885479 (2005-04-01), Pilu
patent: 7317557 (2008-01-01), Pollard et al.
Zhang, Z., “A Flexible New Technique for Camera Calibration,” Microsoft Corporation, Technical Report, MSR-TR-98-71, last updated Aug. 13, 2008, 21 pages.

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