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. 05, 2017
Filed:
Jul. 18, 2014
Applicant:
Intel Corporation, Santa Clara, CA (US);
Inventor:
Evgeny Krestyannikov, Tampere, FI;
Assignee:
Intel Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 5/232 (2006.01); G02B 7/36 (2006.01);
U.S. Cl.
CPC ...
H04N 5/23212 (2013.01); G02B 7/36 (2013.01);
Abstract
Techniques related to contract detection autofocus for imaging devices and, in particular, to contrast detection autofocus using multiple filters to generate adaptive step sizes are discussed. Such techniques may include determining a ratio of filter responses for filters applied to a portion of a scene, generating a distance from focus based on the ratio, and determining a lens position movement based on an adaptive step size generated using the distance from focus and a confidence level associated with the distance from focus.