Better picture for inexpensive cameras

Details Better picture for inexpensive cameras Better picture for inexpensive cameras

2007-10-09

2007-10-09

Johns, Andrew W. (Department: 2624)

Image analysis

Image enhancement or restoration

Artifact removal or suppression

C382S287000

Reexamination Certificate

active

10641679

ABSTRACT:
A method for correcting a nonlinear distortion in an image includes receiving an image of a calibration template comprising calibration patterns, detecting at least three points from the calibration patterns, calculating a distortion parameter from coordinates of the at least three points that should align along a straight line, and correcting the nonlinear distortion in the image using the distortion parameter. A method for correcting a radial distortion in an image includes receiving a radial distortion parameter from the user and calculating new intensity values of points in the image to correct a radial exposure distortion in the image.

REFERENCES:
patent: 5231673 (1993-07-01), Elenga
patent: 6002525 (1999-12-01), Poulo et al.
patent: 2002/0044681 (2002-04-01), Fujimoto et al.
patent: 2003/0035100 (2003-02-01), Dimsdale et al.
patent: 2005/0225808 (2005-10-01), Braudaway et al.

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