Heterodyne range imaging as an alternative to photogrammetry

Adrian Dorrington; Michael Cree; Dale Carnegie; Andrew Payne; Richard Conroy

doi:10.1117/12.703674

29 January 2007 Heterodyne range imaging as an alternative to photogrammetry

Adrian Dorrington, Michael Cree, Dale Carnegie, Andrew Payne, Richard Conroy

Proceedings Volume 6491, Videometrics IX; 64910D (2007) https://doi.org/10.1117/12.703674
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

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.

Citation Download Citation

Adrian Dorrington, Michael Cree, Dale Carnegie, Andrew Payne, and Richard Conroy "Heterodyne range imaging as an alternative to photogrammetry", Proc. SPIE 6491, Videometrics IX, 64910D (29 January 2007); https://doi.org/10.1117/12.703674

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