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Proceedings Paper

Fast and flexible shape control with adaptive LCD fringe masks
Author(s): Martin Schoenleber; Hans J. Tiziani
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Paper Abstract

Fast analysis of 3D shape deviations is obtained with fringe projection combined with moire filtering. A method is presented where an object adapted fringe mask is written in a matrix LCD and projected onto the test object. The object is detected by a CCD camera. Perfect objects yield regular fringe patterns. shape deviations results in distorted fringes. For moire filtering the periodic structure of the detecting CCD chip is exploited, therefore no image postprocessing is required, testing at video frame rate is possible.

Paper Details

Date Published: 17 September 1997
PDF: 8 pages
Proc. SPIE 3098, Optical Inspection and Micromeasurements II, (17 September 1997); doi: 10.1117/12.281188
Show Author Affiliations
Martin Schoenleber, Univ. Stuttgart (Germany)
Hans J. Tiziani, Univ. Stuttgart (Germany)


Published in SPIE Proceedings Vol. 3098:
Optical Inspection and Micromeasurements II
Christophe Gorecki, Editor(s)

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