License Plate Technology “Design for Camera Readability”

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Presentation transcript:

License Plate Technology “Design for Camera Readability” Brent James – AVI Business Manager (651-733-4693, jabrent@mmm.com) 3 Traffic Safety Systems Division

Automated Enforcement Applications Cash Cash & Electronic All Electronic Automatic License Plate Reading (ALPR) Toll Roads & Police Using ALPR Technology for Enforcement 3 Traffic Safety Systems Division

Challenges for License Plate Reading Plate Design Fonts & Graphics Variations Repeated Alpha Numeric Plate Construction Embossed vs. Flat Plates Reflective Properties of Sheeting Printing Inks Camera Illumination Type (white light vs. IR) OCR Software (regional optimization) Unique ID = Alpha Numeric + State + Plate Type 3 Traffic Safety Systems Division

Cameras See Things Differently Visible Light Images IR Images 3 Traffic Safety Systems Division

Design Plates for Camera Readability Improved Contrast Ratio Alphanumeric Background Graphics Embedded Identifiers State / Country Plate Type Unique Identifier? Improved Read Confidence Self Check e.g. bar codes Maintain Graphic Design & Improve Camera Readability 3 Traffic Safety Systems Division

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