NVIP
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2H
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6732M/LPR Quick start guide version 1.0
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22
RECOGNITION OF LICENSE PLATES
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The camera tilt angle (vertical) should be between 10 ° and 15 °.
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If the camera is installed on the roadside, the camera rotation angle must not exceed 20 ° (from
the lane axis).
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If the camera is installed above the road, the camera rotation angle must be between
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10 ° and
+10 ° (from the lane axis).
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The speed of the vehicles should be less than 70 km/h
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The width of the license plate should be between 6% and 50% of the camera's field of view
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Where additional lighting (infrared or visible) is used, the position of the light source must be
such as to preclude the formation of glare or overexposure.
Monitoring of entries / exits
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The camera must be mounted so that it can observe at least a 5
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meter stretch of straight road
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The camera mounting height (H) should be between 1.3 m and 1.5 m.
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The distance (D) (between the place where the camera is installed and the recognition area)
should be 2.5 m to 3 m.
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The length of the recognition area (L) should be between 1.5 m and 2 m.
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The camera tilt angle should be in the range from 0 ° to 5 °
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The camera rotation angle should be in the range of 5 ° to 20 °