Method and apparatus for calibrating three-dimensional space...

Details Method and apparatus for calibrating three-dimensional space... Method and apparatus for calibrating three-dimensional space...

G - Physics

08

G

G08G 1/04 (2006.01) G01B 11/02 (2006.01) G01P 21/02 (2006.01)

Patent

CA 2165664

A calibration apparatus for calibrating three-dimensional space for a machine vision system and a method for using the calibration apparatus for calibrating the machine vision system are disclosed. The calibration apparatus comprises pairs of indicators, such as lights, mounted on a frame, each pair of lights separated by a known horizontal distance. The calibration apparatus may be mounted on the back of a vehicle that moves the apparatus through a roadway scene at a known speed. A machine vision system tracks the calibration apparatus specifically the pairs of lights mounted on the frame, and maps the pixel space of the machine vision system to three- dimensional space.

L'invention concerne un appareil d'étalonnage permettant l'étalonnage de l'espace tridimensionnel pour un système de vision informatique ainsi que son procédé d'utilisation. Ledit appareil d'étalonnage est constitué de paires d'indicateurs tels que des voyants montés sur un cadre et séparés par une distance horizontale connue. L'appareil d'étalonnage peut être monté à l'arrière d'un véhicule qui l'amène ainsi à se déplacer sur une route à une vitesse déterminée. Un système de vision informatique suit l'appareil d'étalonnage, plus précisément les paires de voyants montés sur le cadre, et transforme par projection son espace de pixels en un espace tridimensionnel.

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