Video camera mounting and setup requirements for the VIT software module

o ensure the recognition of the state license plates using the VIT software module, it is necessary to install and configure the video cameras in such a way that the following requirements are met:

Camera specifications	Basic characteristics of used video cameras are presented in the General requirements for mounting and configuring of cameras section.
Video image	The symbols height for IP cameras should be not less than 20-30 px, for analog cameras - not less than 14-20 px, the stroke width should be not less than 2 px; Minimum allowed contrast with evenly dirty number plate should not be less than 10% ) contrast differentiation of symbols to the background is 25 on 256 point scale); Maximum allowed uneven dirtiness is not more than 12% (ratio of the dirty area of the number plate to its whole area); Geometrical proportions of the number plate picture should not differ from such proportions of the number plate itself with more than 10%.
Camera positioning	The camera should be installed permanently (for detailed installation information, see the vendor documentation);
Vehicle speed	In Slow mode - vehicle speed is no more than 20 km/h In Fast mode - vehicle speed is not more than 150 km/h

Examples of LP images that will be recognized correctly and completely:

To ensure the correct recognition of the LP number, its image should not be:

unequally lit;
overexposed;
blurred (due to incorrect shutter speed settings for the speed of the vehicle);
distorted (due to incorrect placement of the camera);
interlaced;
dirty.

Attention!

Any deviation from the above requirements reduces the likelihood of correct number recognition.

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Documentation for Auto Intellect 5.6. Documentation for other versions of Intellect is available too.