Patent · US Active

Adaptive scale and/or gravity estimation

US9159133B2 · kind B2 · utility

4Cited by

0References

40Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Arvind Ramanandan · San Diego, US
Christopher Brunner · San Diego, US
Mahesh Ramachandran · Dublin, US
Murali Ramaswamy Chari · San Diego, US

Key dates

Filing date	Aug 29, 2013
Grant date	Oct 13, 2015
Priority date	—
Expiry date	Dec 7, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30244
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Systems, apparatus and methods for estimating gravity and/or scale in a mobile device are presented. A difference between an image-based pose and an inertia-based pose is using to update the estimations of gravity and/or scale. The image-based pose is computed from two poses and is scaled with the estimation of scale prior to the difference. The inertia-based pose is computed from accelerometer measurements, which are adjusted by the estimation for gravity.

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