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The following video camera requirements should be met in order to ensure the recognition of license plate numbers using the Auto Axxon PSIM system.
№ | Property | Range | Comment |
1 | Camera type | Analog color PAL camera, or analog monochrome CCIR camera | IP cameras with not less than 25 fps and 4 Mbit/s bitrate also can be used. |
2 | Camera resolution | Not less than 320x240 | |
3 | Illuminance in the monitored area | Not less than 0.02 lux | |
4 | Signal/noise ration | 50 dB or more | |
5 | Auto aperture and auto electronic shutter | 1/1000 | |
6 | Focal length | 4-8 mm for 1/3'' CCD |
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If recommendations for parameters, mounting and configuring video camera are fulfilled, the typical error of counting the following characteristics will be as follows:
- 5% - − while determining number of vehicles;
- 10% - while − while determining average speed of moving;
- 10% - − while determining average distance;
- 10% - − while classifying vehicles.
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Conditions of applicability of the Traffic Detection Detection module are following:
- visibility of vehicle or vehicle headlight vehicle headlight (at night) - − not less than 50m;
- speed of vehicle - − more than 20 km/h;
- statistical sampling - − not less than 1000 vehicles.
When mounting the Traffic Detection Detection cameras, follow these recommendations:
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