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Optical Engineering

High-speed phase-shift computation using dynamic memory processing
Author(s): Tuck Wah Ng
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Paper Abstract

The conventional method of applying the arctangent operation at every picture element in an interferogram slows down the phaseshift technique. A method that precalculates and dynamically stores the phase combinations in the computer’s random-access memory is introduced. The appropriate value is then mapped out based on input phaseshifted intensities. Performance tests on different types of processors reveal a two to seven times increase in computational speed using the method.

Paper Details

Date Published: 1 December 1996
PDF: 3 pages
Opt. Eng. 35(12) doi: 10.1117/1.601110
Published in: Optical Engineering Volume 35, Issue 12
Show Author Affiliations
Tuck Wah Ng, National Univ. of Singapore (Singapore)

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