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:
Jan. 04, 2022
Filed:
Jun. 28, 2019
Applicant:
Snap Inc., Santa Monica, CA (US);
Inventor:
Oliver Woodford, Santa Monica, CA (US);
Assignee:
Snap Inc., Santa Monica, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06T 19/00 (2011.01); G06T 7/73 (2017.01);
U.S. Cl.
CPC ...
G06T 19/006 (2013.01); G06T 7/73 (2017.01); G06T 2200/04 (2013.01); G06T 2200/08 (2013.01); G06T 2207/20084 (2013.01);
Abstract
A correlation system can be implemented on a user device (e.g., smartphone) to perform image processing tasks e.g., point to point correlations for tasks such as alignment, tracking, and reconstruction of model data. The correlation system can implement normalized cross correlation in a least squares optimization scheme without use of approximations. Normalized cross correlation optimized via least squares can further implement global and local cost functions that are invariant to dynamic lighting conditions.