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Proceedings Paper

Stereovision setup for accurate 3D deformation measurements
Author(s): Per Synnergren
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Paper Abstract

The system described uses a digital image correlation technique called Digital speckle photography (DSP) for the measurement of 3-D surface deformations. A stereoscopic technique with two perpendicular video cameras was developed to enable accurate measurements on arbitrarily shaped objects. Using the calibration algorithm described the main source of error are random errors originating from the correlation algorithm. Standard deviations of displacements as low as 2 micrometer for in-plane displacements and 12 micrometer for the out-of-plane component are reported, for an inspected area of 100 X 100 mm2.

Paper Details

Date Published: 7 May 1999
PDF: 4 pages
Proc. SPIE 3740, Optical Engineering for Sensing and Nanotechnology (ICOSN '99), (7 May 1999); doi: 10.1117/12.347750
Show Author Affiliations
Per Synnergren, Lulea Univ. of Technology (Sweden)


Published in SPIE Proceedings Vol. 3740:
Optical Engineering for Sensing and Nanotechnology (ICOSN '99)
Ichirou Yamaguchi, Editor(s)

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