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:
Jul. 15, 2014
Filed:
Jan. 11, 2012
Yingjun Bai, San Jose, CA (US);
Xuemei Zhang, Mountain View, CA (US);
David Kuo, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Methods, devices and computer readable media for implementing a 'selective gray world' approach for color balancing are described. The disclosed techniques involve the use of noise-optimized selection criteria and, more specifically, in some embodiments, the interpolation between corresponding values in noise-optimized weighting tables when calculating white balance gains. Estimated scene lux levels may provide a valuable indicator of expected scene noise levels. The image processing techniques described herein may be executed by an image capture device or a general purpose processor (e.g., personal computer) executing a user-level software application. The described color balancing techniques may be implemented by dedicated or general purpose hardware, general application software, or a combination of software and hardware in a computer system.