Patent · US Active

Detection of planar targets under steep angles

US9020982B2 · kind B2 · utility

4Cited by

10References

38Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Daniel Wagner · Wien, AT
Slawomir K. Grzechnik · San Diego, US
Qi Pan · London, GB

Key dates

Filing date	Mar 11, 2013
Grant date	Apr 28, 2015
Priority date	—
Expiry date	Jul 5, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/50
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Systems, apparatus and methods to create a database by a device (such as a server) and to use the database by a mobile device for detecting a planar target are presented. The database allows recognition of a planar target by a mobile device from steeper angles with minimum impact on runtime. The database is created from at least one warped view of the planar target. For example, a database may contain keypoints and descriptors from a non-warped view and also from one or more warped views. The database may be pruned by removing keypoints and corresponding descriptors of one image (e.g., a warped image) overlapping with similar or identical keypoints and descriptors of another image (e.g., a non-warped image).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.