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:
Aug. 22, 2017
Filed:
May. 31, 2012
Guy Cote, San Jose, CA (US);
Joseph Anthony Petolino, Jr., Palo Alto, CA (US);
Suk Hwan Lim, Mountain View, CA (US);
D. Amnon Silverstein, Palo Alto, CA (US);
Guy Cote, San Jose, CA (US);
Joseph Anthony Petolino, Jr., Palo Alto, CA (US);
Suk Hwan Lim, Mountain View, CA (US);
D. Amnon Silverstein, Palo Alto, CA (US);
APPLE INC., Cupertino, CA (US);
Abstract
Systems and methods for correcting intensity drop-offs due to geometric properties of lenses are provided. In one example, a method includes receiving an input pixel of the image data, the image data acquired using an image sensor. A color component of the input pixel is determined. A gain grid is determined by pointing to the gain grid in external memory. Each of the plurality of grid points is associated with a lens shading gain selected based upon the color of the input pixel. A nearest set of grid points that enclose the input pixel is identified. Further, a lens shading gain is determined by interpolating the lens shading gains associated with each of the set of grid points and is applied to the input pixel.