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:
Feb. 20, 2018
Filed:
Feb. 09, 2016
Nokia Technologies Oy, Espoo, FI;
Kimmo Roimela, Tampere, FI;
Lixin Fan, Tampere, FI;
Nokia Technologies Oy, Espoo, FI;
Abstract
The invention relates to a method and a system for image-based retrieval. The method comprises receiving a query image; processing the query image to obtain visual features; determining a feature from the obtained visual features; determining a viewing direction for the query image from a pre-determined set of viewing directions; generating a direction-based hash based on the determined feature in the query image and the viewing direction; identifying sub-volumes of a point cloud database that match the direction-based hash; and matching the identified sub-volumes against all the query image features to find a match.