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:
Oct. 29, 2013
Filed:
Sep. 09, 2011
Yuriy Reznik, San Diego, CA (US);
Onur C Hamsici, La Jolla, CA (US);
Sundeep Vaddadi, San Diego, CA (US);
John H Hong, San Clemente, CA (US);
Chong U Lee, San Diego, CA (US);
Yuriy Reznik, San Diego, CA (US);
Onur C Hamsici, La Jolla, CA (US);
Sundeep Vaddadi, San Diego, CA (US);
John H Hong, San Clemente, CA (US);
Chong U Lee, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Methods and devices for coding of feature locations are disclosed. In one embodiment, a method of coding feature location information of an image includes generating a hexagonal grid, where the hexagonal grid includes a plurality of hexagonal cells, quantizing feature locations of an image using the hexagonal grid, generating a histogram to record occurrences of feature locations in each hexagonal cell, and encoding the histogram in accordance with the occurrences of feature locations in each hexagonal cell. The method of encoding the histogram includes applying context information of neighboring hexagonal cells to encode information of a subsequent hexagonal cell to be encoded in the histogram, where the context information includes context information from first order neighbors and context information from second order neighbors of the subsequent hexagonal cell to be encoded.