Documentation for Axxon One 1.0.

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To ensure the recognition of the license plates with License plate recognition (IV), it is necessary to install and configure the cameras to meet the following requirements:

Camera specifications

  1. The minimum video resolution is 640*480, the recommended resolution is 720p or 1080p.
  2. The minimum frame rate is 15 FPS, the recommended frame rate is 25–30 FPS.
  3. Auto Focus and Zoom would be useful for making small adjustments after configuring the detection tool.
  4. Automatic white balance.
  5. IR for night mode with good contrast of license plate images.
  6. HDR or WDR.
  7. In order to recognize state license plates on high-speed roads, the camera should have the Global Shutter mode.

Video requirements

  1. The video image should be clear, contrasting, without distortion, not blurred.
  2. The video image should have minimum noise in low light conditions.
  3. The size of the license plate should be 15–70% of the total size of the image.
  4. The license plate must contain no more than two rows of characters.

Camera installation requirements

  1. The video camera should be mounted at 0.6–2.4 meters above the ground.
  2. The angle formed by the lower line of the license plate and the horizon line should be from 0 to 20 degrees.
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Examples of correct and incorrect video images