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Location and Motion Estimation Using Ground Imaging Sensor

Abstract: 

A system and method for estimating location and motion of an object. An image of a ground surface is obtained and a first set of features is extracted from the image. A map database is searched for a second set of features that match the first set of features and a geo-location is retrieved from the map database, wherein the geo-location is associated with the second set of features. The location is estimated based on the retrieved geo-location. The motion of the object, such as distance travelled, path travelled and/or speed may be estimated in a similar manner by comparing the location of extracted features that are present in two or more images over a selected time period.

Patent Number: 
8,725,413
Date Of Issue: 
05/13/2014
Inventors: 

Kristopher C. Kozak; Marc C. Alban; Samuel E. Slocum