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Optical Engineering

Error analysis of a zero-crossing algorithm for fringe location
Author(s): Kjell J. Gasvik; Kjell Gunnar Robbersmyr
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Paper Abstract

A theoretical analysis of the fringe location error of a sampled intensity distribution when using a zero-crossing algorithm is performed. The theory assumes a sinusoidal distribution with local constant phase modulation. The error function is analyzed with respect to the number of pixels per fringe period α, the location of the fringe maximum within a pixel, and the error in computing the mean intensity. It is shown that for reasonable values of α, the fringe location error will be less than the error caused by jitter in the line sync signal if the error in the mean intensity is kept below certain limits.

Paper Details

Date Published: 1 January 1994
PDF: 5 pages
Opt. Eng. 33(1) doi: 10.1117/12.149138
Published in: Optical Engineering Volume 33, Issue 1
Show Author Affiliations
Kjell J. Gasvik, Spectra Vision AS (Norway)
Kjell Gunnar Robbersmyr, Norwegian Inst. of Technology (Norway)

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