Vehicle tracking system

Details Vehicle tracking system Vehicle tracking system

2005-03-29

2005-03-29

Zanelli, Michael J. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Relative location

Collision avoidance

C701S028000, C701S096000, C701S116000, C701S223000, C340S937000, C340S435000, C342S070000, C348S119000, C180S167000

Reexamination Certificate

active

06873912

ABSTRACT:
A vehicle tracking system for a vehicle is configured to track a remote vehicle by template matching between a reference image and an input image obtained by a camera mounted on the vehicle. The position and distance of a remote vehicle is determined by calculating a position and an enlargement/reduction ratio of a portion of the input image that provide a maximum correlation value between the portion of the input image and the reference template that is greater than a threshold value. The reference template is updated by calculating a dispersion of at least one pixel of the reference template with respect to a corresponding pixel in a vehicle image extracted from the input image that provides the maximum correlation value, and by deleting the at least one pixel when the dispersion of the at least one pixel is equal to or greater than a threshold value.

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