Parallel computation of level set method for 500 Hz visual servo control

Xianfeng Fei, Yasunobu Igarashi, Koichi Hashimoto

Research output: Contribution to journalConference articlepeer-review


We propose a 2D microorganism tracking system using a parallel level set method and a column parallel vision system (CPV). This system keeps a single microorganism in the middle of the visual field under a microscope by visual servoing an automated stage. We propose a new energy function for the level set method. This function constrains an amount of light intensity inside the detected object contour to control the number of the detected objects. This algorithm is implemented in CPV system and computational time for each frame is 2 [ms], approximately. A tracking experiment for about 25 s is demonstrated. Also we demonstrate a single paramecium can be kept tracking even if other paramecia appear in the visual field and contact with the tracked paramecium.

Original languageEnglish
Article number71261S
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2009 May 29
Event28th International Congress on High-Speed Imaging and Photonics - Canberra, Australia
Duration: 2008 Nov 92008 Nov 14


  • Level set method
  • Parallel image processing
  • Visual servoing and microscope

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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