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. 14, 2015
Filed:
Aug. 30, 2012
Edward T. Chang, Saratoga, CA (US);
Scott T. Smith, San Jose, CA (US);
Damien J. Thivent, San Francisco, CA (US);
Richard L. Baer, Los Altos, CA (US);
Paul M. Hubel, Mountain View, CA (US);
Edward T. Chang, Saratoga, CA (US);
Scott T. Smith, San Jose, CA (US);
Damien J. Thivent, San Francisco, CA (US);
Richard L. Baer, Los Altos, CA (US);
Paul M. Hubel, Mountain View, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
The color response of camera devices may be calibrated, using a correction factor that can account for differences in the spectra of light emitted by different light sources used during calibration. The correction factor may be calculated based on the expected spectral sensitivities of the camera devices, the power spectrum of an actual light source, and the power spectrum of a canonical light source. The correction factor is then applied to adjust a measured color response of a given camera device, so that the adjusted color response is effectively the response of the given camera device if it had been illuminated by the canonical light source. In this manner, any measured color response differences, which may be due to differences between the actual light source used and the canonical light source, can be effectively reduced (if not essentially eliminated.) Other embodiments are also described and claimed.