Cristin-resultat-ID: 1271382
Sist endret: 24. september 2015, 19:50
Resultat
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2006

System for Reading Braille Embossed on Beverage Can Lids for Authentication

Bidragsytere:
  • Trine Kirkhus

Bok

Om resultatet

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publiseringsår: 2006
Hefte: 4179
Sider: 855 - 866
ISBN:
  • 9783540446309

Importkilder

SINTEF AS-ID: S1135

Beskrivelse Beskrivelse

Tittel

System for Reading Braille Embossed on Beverage Can Lids for Authentication

Sammendrag

The paper describes a system I for reading embossed Braille patterns on used aluminum beverage container lids. The intent of the system is to check whether the used containers are entitled to a refund. The lids have strong specular reflections. The reflections are avoided by a novel method that illuminates the lid alternating from two angles, and acquires two separate images. This illumination method is more compact than existing methods. We use the extended maxima algorithm to detect the Braille dots, and a cluster-based pattern point matching algorithm to recognize a pre-defined Braille pattern. The algorithms are customized to increase speed using a priori information. The system was evaluated on a test set containing 225 images. The median time used for analyzing one beverage can was I second, and the recognition rate was 94 percent.

Bidragsytere

Trine Kirkhus

  • Tilknyttet:
    Forfatter
    ved Smart Sensor Systems ved SINTEF AS
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Resultatet er en del av Resultatet er en del av

Advanced Concepts for Intelligent Vision Systems, Proceedings.

2006, Springer. Vitenskapelig antologi/Konferanseserie
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