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:
Apr. 14, 2015
Filed:
Jan. 25, 2011
Giovanni Cordara, Turin, IT;
Gianluca Francini, Turin, IT;
Skjalg Lepsoy, Turin, IT;
Pedro Porto Buarque DE Gusmao, Sau Paulo, BR;
Giovanni Cordara, Turin, IT;
Gianluca Francini, Turin, IT;
Skjalg Lepsoy, Turin, IT;
Pedro Porto Buarque de Gusmao, Sau Paulo, BR;
Telecom Italia S.p.A., Milan, IT;
Abstract
A method for comparing a first image with a second image. The method identifies first keypoints in the first image and second keypoints in the second image and associates each first keypoint with a corresponding second keypoint to form a corresponding keypoint match. For each pair of first keypoints, the method further calculates the distance therebetween for obtaining a corresponding first length. Similarly, for each pair of second keypoints, the method calculates the distance therebetween for obtaining a corresponding second length. The method further calculates a plurality of distance ratios; each distance ratio is based on a length ratio between a selected one between a first length and a second length and a corresponding selected one between a second length and a first length, respectively.