Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 13, 2015
0Patent Application Number
131732610
Date Filed
June 30, 2011
0Patent Citations Received
Patent Primary Examiner
Patent 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.
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