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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-Intellect system (see Table 4.6—1).
 Anchor_Ref237331424_Ref237331424Table 4.6—1

№

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 480 TLV

 

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
Lens with adjusting focal length and auto aperture can be used.

 

The frame resolution after digitization should be not less than 352 х It is not recommended to use the frame resolution more than 352 x 288 (CIF) because it will result in large spend of recources and video will be compressed until 352 x 288 (CIF).