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      Heterodyne range imaging as an alternative to photogrammetry

      Dorrington, Adrian A.; Cree, Michael J.; Carnegie, Dale A.; Payne, Andrew D.; Conroy, Richard M.
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      Heterodyne range imaging.pdf
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      DOI
       10.1117/12.703674
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      Adrian Dorrington, Michael Cree, Dale Carnegie, Andrew Payne and Richard Conroy, "Heterodyne range imaging as an alternative to photogrammetry," Videometrics IX, J.-Angelo Beraldin, Fabio Remondino, Mark R. Shortis, Editors, Proc. SPIE, 6491, 64910D (2007).
      Permanent Research Commons link: https://hdl.handle.net/10289/3819
      Abstract
      Solid-state full-field range imaging technology, capable of determining the distance to objects in a scene simultaneously for every pixel in an image, has recently achieved sub-millimeter distance measurement precision. With this level of precision, it is becoming practical to use this technology for high precision three-dimensional metrology applications. Compared to photogrammetry, range imaging has the advantages of requiring only one viewing angle, a relatively short measurement time, and simplistic fast data processing. In this paper we fist review the range imaging technology, then describe an experiment comparing both photogrammetric and range imaging measurements of a calibration block with attached retro-reflective targets. The results show that the range imaging approach exhibits errors of approximately 0.5 mm in-plane and almost 5 mm out-of-plane; however, these errors appear to be mostly systematic. We then proceed to examine the physical nature and characteristics of the image ranging technology and discuss the possible causes of these systematic errors. Also discussed is the potential for further system characterization and calibration to compensate for the range determination and other errors, which could possibly lead to three-dimensional measurement precision approaching that of photogrammetry.
      Date
      2007
      Type
      Conference Contribution
      Publisher
      The Society for Imaging Science and Technology, The International Society for Optical Engineering
      Rights
      Copyright 2007 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
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