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:
Dec. 10, 2013
Filed:
Sep. 01, 2010
Guy Cote, San Jose, CA (US);
Jeffrey E. Frederiksen, Sunnyvale, CA (US);
Paul Matthew Hubel, Mountain View, CA (US);
Sumit Chawla, San Carlos, CA (US);
Guy Cote, San Jose, CA (US);
Jeffrey E. Frederiksen, Sunnyvale, CA (US);
Paul Matthew Hubel, Mountain View, CA (US);
Sumit Chawla, San Carlos, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Various techniques are disclosed for processing statistics data in an image signal processor (ISP). In one embodiment, a statistics collection engine may be configured to acquire statistics relating to auto white-balance. The statistics collection engine may receive raw Bayer RGB data acquired by an image sensor and may be configured to perform one or more color space conversions to obtain pixel data in other color spaces. A set of pixel filters may be configured to accumulate sums of the pixel data conditionally based upon YC1C2 characteristics, as defined by a pixel condition per pixel filter. Depending on a selected color space, the pixel filters may generate color sums, which may be used to match a current illuminant against a set of reference illuminants with which the image sensor has been previously calibrated.