Title:
CAMERA - BASED INERTIAL SENSOR ALIGNMENT FOR PERSONAL NAVIGATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/096876
Kind Code:
A3
Abstract:
An apparatus and method to enhance dead-reckoning navigation using inertial sensor measurements based on images from a camera are disclosed. A camera build into a mobile device is used to calibrate inertial sensors and rotation matrices. Images from a camera may be used (1) to remove a gravitational element from accelerometer measurements; (2) to set a scaling factor and an offset for a gyrometer; and (3) to set initial and updated values for rotation matrices.
Inventors:
GARIN LIONEL J (US)
Application Number:
PCT/US2012/020623
Publication Date:
April 18, 2013
Filing Date:
January 09, 2012
Export Citation:
Assignee:
QUALCOMM INC (US)
GARIN LIONEL J (US)
GARIN LIONEL J (US)
International Classes:
G01C21/16; G01C25/00
Domestic Patent References:
| WO2010096670A1 | 2010-08-26 |
Foreign References:
| US6594600B1 | 2003-07-15 |
Attorney, Agent or Firm:
WYMAN, Bryan H. (4010 Moorpark Avenue Suite 21, San Jose California, US)
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