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changes.mady.by.user Gleb Matskevich

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To ensure the vehicle license plates recognition with the IntelliVision software module, install and configure cameras so that the following requirements are met:

Camera specifications
  • the minimum video resolution of 640x480, the recommended resolution of 720p or 1080p;
  • the minimum frame rate of 15 fps, the recommended frame rate of 25-30 fps;
  • autofocus and zoom features are advisable to enable small changes after recognizer’s configuration;
  • automatic white-balance / automatic gain control;
  • high-contrast IR for night mode;
  • HDR / WDR.
Video image
  • the video image must be clear and contrast, without aberration;
  • the size of the license plate must be 10-70% of the total frame size;
  • there should be
only
  • one or two line of symbols on a license plate.
Camera positioning
  • the camera is to be 0,6-2,4 meters above the ground;
  • the angle between the license plate bottom border and the horizon line should be of 0 to 20 degrees. 
Vehicle speed
  • slow to moderate (8-40 kmph).


Info
titleNote

Current license plate recognition algorithm works only with alphanumeric symbols (A-Z, 0-9). In some countries specific letters on a license plate can be displayed as * after recognition.

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