| 摘要 |
A method and device for registering the successive positions of displacements of a vehicle by means of pairs of video cameras, which are located at a distance above the ground for the vehicle. The cameras are at a distance from each other and directed each so as to record the ground areas which overlap each other. Hereby, in the cameras, pairs of stereo records are produced, which are compared in an image processing. With the aid of the different positions for such vehicle contours, which are located at different height levels above the ground, such a contour is selected which through substantial displacement between the two records is indicated to be located at a distance above the ground. This vehicle contour is used in the image processing as an indicator in the tracking of the displacement of the vehicle.
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