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Type of requirements	Purpose	Requirements for the video image from the camera, which will be used for detection
Basic requirements	For the ANPR to operate using the detection tools	Character height is at least 10px, preferably 20px or more
		Minimum resolution is 1280720. The recommended resolution is 19201080
		Minimum frame rate for the Slow mode is 5 FPS. Minimum frame rate for the Fast mode is 20 FPS
		Maximum horizontal angle is 30°
		Maximum vertical angle is 45°
		Expected

ANPR works properly if the following camera specs, installation, and configuration requirements are met:

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image contrast: the contrast difference between characters of the

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LP and the background should be at least 20 units with

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the image brightness scale

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from 0 to 255

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Additional requirements	To determine the

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vehicle driving direction	Camera installation height is at least 3 meters
	Maximum

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angle between the camera and the road direction

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is 30°
Minimum camera tilt
To recognize the make and the model of the vehicle	Visible width of the vehicle is from 100px
To recognize the make and the model of the vehicle	Color or black and white image
To recognize the color of the vehicle	Visible width of the vehicle is from 100px
	The scene illumination should be at least 50 lux. Under low or excessive illumination (night or backlight), the stability of the analytics operation is not guaranteed. There are no sudden changes in illumination
	Color image with a normal color grade
To determine the condition of the headlights	Visible width of the vehicle is from 100px
	Front view of the vehicle
	Evening, night or foggy shooting conditions are required

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