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High-resolution, real-time 3D absolute coordinate measurement based on a phase-shifting method
Optics Express (2006)
  • Song Zhang, Harvard University
  • Shing-Tung Yau, Harvard University
We describe a high-resolution, real-time 3D absolute coordinate measurement system based on a phase-shifting method. It acquires 3D shape at 30 frames per second (fps), with 266K points per frame. A tiny marker is encoded in the projected fringe pattern, and detected by software from the texture image and the gamma map. Absolute 3D coordinates are obtained from the detected marker position and the calibrated system parameters. To demonstrate the performance of the system, we measure a hand moving over a depth distance of approximately 700 mm, and human faces with expressions. Applications of such a system include manufacturing, inspection, entertainment, security, medical imaging.
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This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Citation Information
Song Zhang and Shing-Tung Yau. "High-resolution, real-time 3D absolute coordinate measurement based on a phase-shifting method" Optics Express Vol. 14 Iss. 7 (2006)
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