Stereovision setup for accurate 3D deformation measurements

Per Synnergren

doi:10.1117/12.347750

7 May 1999 Stereovision setup for accurate 3D deformation measurements

Per Synnergren

Proceedings Volume 3740, Optical Engineering for Sensing and Nanotechnology (ICOSN '99); (1999) https://doi.org/10.1117/12.347750
Event: Optical Engineering for Sensing and Nanotechnology (ICOSN '99), 1999, Yokohama, Japan

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.

Citation Download Citation

Per Synnergren "Stereovision setup for accurate 3D deformation measurements", Proc. SPIE 3740, Optical Engineering for Sensing and Nanotechnology (ICOSN '99), (7 May 1999); https://doi.org/10.1117/12.347750

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