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Embedded Real-Time Architecture for Level-Set-Based Active Contours


Methods described by partial differential equations have gained a considerable interest because of undoubtful advantages such as an easy mathematical description of the underlying physics phenomena, subpixel precision, isotropy, or direct extension to higher dimensions. Though their implementation within the level set framework offers other interesting advantages, their vast industrial deployment on embedded systems is slowed down by their considerable computational effort. This paper exploits the high parallelization potential of the operators from the level set framework and proposes a scalable, asynchronous, multiprocessor platform suitable for system-on-chip solutions. We concentrate on obtaining real-time execution capabilities. The performance is evaluated on a continuous watershed and an object-tracking application based on a simple gradient-based attraction force driving the active countour. The proposed architecture can be realized on commercially available FPGAs. It is built around general-purpose processor cores, and can run code developed with usual tools.

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Correspondence to Eva Dejnožková.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Dejnožková, E., Dokládal, P. Embedded Real-Time Architecture for Level-Set-Based Active Contours. EURASIP J. Adv. Signal Process. 2005, 245879 (2005).

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Keywords and phrases

  • level set
  • partial differential equations
  • object tracking
  • real-time execution
  • embedded platforms