High-speed phase-shift computation using dynamic memory processing

Tuck Wah Ng

doi:10.1117/1.601110

1 December 1996 High-speed phase-shift computation using dynamic memory processing

Tuck Wah Ng

Optical Engineering, Vol. 35, Issue 12, (December 1996). https://doi.org/10.1117/1.601110

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.

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Tuck Wah Ng "High-speed phase-shift computation using dynamic memory processing," Optical Engineering 35(12), (1 December 1996). https://doi.org/10.1117/1.601110

Published: 1 December 1996

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