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This content will become publicly available on November 6, 2018

Title: Micro Fourier Transform Profilometry (μFTP): 3D shape measurement at 10,000 frames per second

We report that fringe projection profilometry is a well-established technique for optical 3D shape measurement. However, in many applications, it is desirable to make 3D measurements at very high speed, especially with fast moving or shape changing objects. In this work, we demonstrate a new 3D dynamic imaging technique, Micro Fourier Transform Profilometry (μFTP), which can realize an acquisition rate up to 10,000 3D frame per second (fps). The high measurement speed is achieved by the number of patterns reduction as well as high-speed fringe projection hardware. In order to capture 3D information in such a short period of time, we focus on the improvement of the phase recovery, phase unwrapping, and error compensation algorithms, allowing to reconstruct an accurate, unambiguous, and distortion-free 3D point cloud with every two projected patterns. We also develop a high-frame-rate fringe projection hardware by pairing a high-speed camera and a DLP projector, enabling binary pattern switching and precisely synchronized image capture at a frame rate up to 20,000 fps. Lastly, based on this system, we demonstrate high-quality textured 3D imaging of 4 transient scenes: vibrating cantilevers, rotating fan blades, flying bullet, and bursting balloon, which were previously difficult or even unable to be capturedmore » with conventional approaches.« less
 [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [4]
  1. Nanjing University of Science and Technology (China). Smart Computational Imaging (SCI) Laboratory and Jiangsu Key Laboratory of Spectral Imaging & Intelligent Sense
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  3. Nanyang Technological University (Singapore). Centre for Optical and Laser Engineering (COLE), School of Mechanical and Aerospace Engineering
  4. Nanjing University of Science and Technology (China). Jiangsu Key Laboratory of Spectral Imaging & Intelligent Sense
Publication Date:
Report Number(s):
Journal ID: ISSN 0143-8166
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Optics and Lasers in Engineering
Additional Journal Information:
Journal Volume: 102; Journal Issue: C; Journal ID: ISSN 0143-8166
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
42 ENGINEERING; 47 OTHER INSTRUMENTATION; Fringe projection profilometry; Micro Fourier Transform Profilometry (μFTP); 3D shape measurement; Phase unwrapping
OSTI Identifier: