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Optical Engineering

New modified phase locked loop method for fringe pattern demodulation
Author(s): Janusz Kozlowski; Giovanni Serra
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Paper Abstract

The modified phase locked loop (PLL) technique applied to the analysis of 2-D carrier-frequency fringe patterns is presented. It uses two images with a projected grating shifted in phase by half of its period. The proposed technique was tested for the mannequin shape determination with good results obtained with two iterations only. Due to the properties of the PLL technique there is no problem with phase unwrapping and very short calculation time is needed.

Paper Details

Date Published: 1 July 1997
PDF: 6 pages
Opt. Eng. 36(7) doi: 10.1117/1.601382
Published in: Optical Engineering Volume 36, Issue 7
Show Author Affiliations
Janusz Kozlowski, Assoc Institutzione Libera Univ. Nuorese (Italy)
Giovanni Serra, Assoc Ist Libera Univ Nuorese (Italy)

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