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The ANPR
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operates properly if the following camera
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requirements are met:
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- Character height is at least
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- 10px, preferably
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- 20px or more
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- .
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- Minimum resolution is 1280*720
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- . The recommended resolution is 1920*1080
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- .
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- Minimum frame rate for the Slow mode
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- is 5 FPS. Minimum frame rate for the Fast mode is 20
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- FPS.
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- Maximum horizontal angle
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- is 30°
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- .
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- Maximum vertical angle
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- is 45°
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- .
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- Expected 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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