A template-based approach for real-time speed-limit-sign recognition on an embedded system using GPU computing

  • Authors:
  • Pinar Muyan-Özçelik;Vladimir Glavtchev;Jeffrey M. Ota;John D. Owens

  • Affiliations:
  • University of California, Davis, CA;University of California, Davis, and BMW Group Technology Office, Palo Alto, CA;BMW Group Technology Office, Palo Alto, CA;University of California, Davis, CA

  • Venue:
  • Proceedings of the 32nd DAGM conference on Pattern recognition
  • Year:
  • 2010

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Abstract

We present a template-based pipeline that performs realtime speed-limit-sign recognition using an embedded system with a lowend GPU as the main processing element. Our pipeline operates in the frequency domain, and uses nonlinear composite filters and a contrast-enhancing preprocessing step to improve its accuracy. Running at interactive rates, our system achieves 90% accuracy over 120 EU speed-limit signs on 45 minutes of video footage, superior to the 75% accuracy of a non-real-time GPU-based SIFT pipeline.