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:
Jun. 21, 2016
Filed:
Mar. 31, 2008
Jonathan J. Hull, San Carlos, CA (US);
Berna Erol, San Jose, CA (US);
Shigeharu Uda, San Jose, CA (US);
Qifa KE, Cupertino, CA (US);
Jonathan J. Hull, San Carlos, CA (US);
Berna Erol, San Jose, CA (US);
Shigeharu Uda, San Jose, CA (US);
Qifa Ke, Cupertino, CA (US);
Ricoh Co., Ltd., Tokyo, JP;
Abstract
The present invention uses invisible junctions which are a set of local features unique to every page of the electronic document to match the captured image to a part of an electronic document. The present invention includes: an image capture device, a feature extraction and recognition system and database. When an electronic document is printed, the feature extraction and recognition system captures an image of the document page. The features in the captured image are then extracted, indexed and stored in the database. Given a query image, the features in the query image are extracted and compared against those stored in the database to identify the query image. The feature extraction and recognition system of the present invention is integrated into a multifunction peripheral. This allows the feature extraction and recognition system to be used in conjunction with other modules to provide security and annotation applications.