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Proceedings Paper

Novel cross-correlation algorithm for reducing noise-related errors in array-type optical triangulation displacement sensors
Author(s): Kyung-Chan Kim; SeBaek Oh; Soo Hyun Kim; Yoon Keun Kwak
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Paper Abstract

Optical triangulation displacement sensors are widely used for their non-contact measurement characteristics, sub-micron order resolution, simple structure, and long operation range. However, errors originating from surface inclination, speckle effect, light source fluctuation, and detector noise limit the wider use. In order to minimize these errors, the structure for optical triangulation displacement sensors, which is composed of an incoherent source and a linear CCD, has been proposed. But using a linear CCD causes several problems in signal processing. In this paper, we propose an adequate signal processing system for the proposed structure. With the help of the proposed algorithm, the limited resolution problem of CCD can be solved.

Paper Details

Date Published: 17 May 2001
PDF: 7 pages
Proc. SPIE 4285, Testing, Reliability, and Applications of Optoelectronic Devices, (17 May 2001); doi: 10.1117/12.426874
Show Author Affiliations
Kyung-Chan Kim, Korea Advanced Institute of Science and Technology (South Korea)
SeBaek Oh, Korea Advanced Institute of Science and Technology (South Korea)
Soo Hyun Kim, Korea Advanced Institute of Science and Technology (South Korea)
Yoon Keun Kwak, Korea Advanced Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 4285:
Testing, Reliability, and Applications of Optoelectronic Devices
Aland K. Chin; S. C. Wang; Niloy K. Dutta; Niloy K. Dutta; Kurt J. Linden; S. C. Wang, Editor(s)

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