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Related Experiment Video

Updated: Feb 25, 2026

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles
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Monocular Stereo Measurement Using High-Speed Catadioptric Tracking.

Shaopeng Hu1, Yuji Matsumoto2, Takeshi Takaki3

  • 1Department of System Cybernetics, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan. hu@robotics.hiroshima-u.ac.jp.

Sensors (Basel, Switzerland)
|August 10, 2017
PubMed
Summary

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This study introduces a novel active vision system for real-time stereo tracking. It uses a single ultrafast mirror to achieve high-speed, multi-view image capture for accurate 3D measurements of moving objects.

Area of Science:

  • Robotics and Computer Vision
  • Optical Engineering

Background:

  • Traditional stereo tracking systems often require multiple cameras, increasing complexity and cost.
  • Achieving real-time tracking of fast-moving objects with high accuracy presents significant challenges in computer vision.

Purpose of the Study:

  • To present a novel concept for real-time catadioptric stereo tracking using a single active vision system.
  • To enable a single system to function as multiple virtual cameras for simultaneous stereo image acquisition.

Main Methods:

  • Development of an ultrafast mirror-drive pan-tilt active vision system capable of switching between hundreds of views per second.
  • Implementation of millisecond-granularity processing for video-shooting, computation, and actuation.
  • Utilizing a monocular galvano-mirror-based system to simulate left and right pan-tilt cameras for stereo imaging.
Keywords:
catadioptric stereohigh-speed visionmultithread active visionstereo trackingviewpoint switching

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Last Updated: Feb 25, 2026

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Main Results:

  • The system can switch between 500 different views per second, functioning as a catadioptric active stereo system.
  • It virtually captures stereo images (512x512, 8-bit color) at 250 fps per virtual camera.
  • Demonstrated successful tracking of fast-moving objects in 3D space with sufficient parallax for accurate measurements.

Conclusions:

  • The developed monocular stereo tracking system offers an efficient solution for real-time 3D tracking of dynamic objects.
  • This approach provides a cost-effective and versatile alternative to traditional multi-camera stereo setups.
  • The system's high-speed view-switching capability is crucial for capturing dynamic scenes accurately.