Acti ALPR Server 1 V1.0.1 Manual de usuario descargar pdf (Pagina 15)

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ACTi ALPR Server 1 User’s Manual

Camera Installation

The precision of the ALPR Server 1’s recognition depends on many factors, including: the

image quality in the video, the pixels counts shown, user applications, camera installation,

etc… Below are a few guidelines to take into consideration when installing your camera

device:

1) Shooting Angle of the Camera: the shooting angle of the camera to the license

place should be between the ranges of 10° to 45°, as shown in the illustration below:

2) Frame Rate in the Video Stream: Your camera device’s frame rate should be set to

25FPS or 30FPS or higher

3) Shutter Speed: The shutter speed on your camera device should be faster than or

equal to 1/100 or 1/120 seconds

4) Shape of the License Plate: The shape of the license plate captured in your video

should be as similar to a rectangle as possible

5) Height of characters and distance between characters on license plate: When

captured by your camera device, the height of the characters should be taller than 40

pixels, and the distance between characters should be wider than 4 pixels.

6) Image Quality: Image quality is critical for the ALPR Server 1’s recognition function

to work properly. Please make sure the exposure, sharpness, and color presentation

of the image captured by your camera device is adequate.

10° to 45°

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Acti ALPR Server 1 V1.0.1 Manual de usuario Pagina 15