Patent ID: 9025028
Filing Date: 2015-05-05
Classification: G06K,G08G,H04N

Abstract:
1. A device for detecting vehicle license plates comprising: a video camera configured to aim on a street section with passing vehicles including license plates to record an optical camera image and convert said camera image to an electronic image sequence, wherein the video camera has a first operating mode in which the video camera is configured to generate a first image sequence of a strip-shaped section of the optical camera image at a first frame rate, the strip-shaped section being smaller than the entire optical camera image, and a second operating mode in which the video camera is configured to generate a second image sequence of the entire optical camera image at a second frame rate, the first frame rate being higher than the second frame rate, and wherein the video camera is configured by a control signal to switch to either the first or the second operating mode; and a detector unit coupled to the video camera, wherein the detector unit is configured to detect at least a portion of a license plate in the first image sequence of the first operating mode, and upon detection, to send the control signal to the video camera to trigger the video camera so that it generates at least one electronic image which contains the license plate in or near said strip-shaped section in the second image sequence of the second operating mode.