The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2011
Filed:
Aug. 07, 2007
Szepo Robert Hung, Carlsbad, CA (US);
Jingqiang LI, San Diego, CA (US);
Hsiang-tsun LI, San Diego, CA (US);
Xin Zhong, San Diego, CA (US);
Szepo Robert Hung, Carlsbad, CA (US);
Jingqiang Li, San Diego, CA (US);
Hsiang-Tsun Li, San Diego, CA (US);
Xin Zhong, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A two-dimensional (2D) mesh is applied over a distortion surface to approximate a lens roll-off distortion pattern. The process to apply the 2D mesh distributes a plurality of grid points among the distortion pattern and sub-samples the distortion pattern to derive corrected digital gains at each grid location. Non-grid pixels underlying grid blocks having a grid point at each corner are adjusted based on the approximation of the lens roll-off for the grid points of the grid block. In one example, bilinear interpolation is used. The techniques universally correct lens roll-off distortion irregardless of the distortion pattern shape or type. The technique may also correct for green channel imbalance.