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Title: Motion detection using extended fractional Fourier transform and digital speckle photography
Authors: Bhaduri, B. 
Tay, C.J. 
Quan, C. 
Sheppard, C.J.R. 
Issue Date: 24-May-2010
Citation: Bhaduri, B., Tay, C.J., Quan, C., Sheppard, C.J.R. (2010-05-24). Motion detection using extended fractional Fourier transform and digital speckle photography. Optics Express 18 (11) : 11396-11405. ScholarBank@NUS Repository.
Abstract: Digital speckle photography is a useful tool for measuring the motion of optically rough surfaces from the speckle shift that takes place at the recording plane. A simple correlation based digital speckle photographic system has been proposed that implements two simultaneous optical extended fractional Fourier transforms (EFRTs) of different orders using only a single lens and detector to simultaneously detect both the magnitude and direction of translation and tilt by capturing only two frames: one before and another after the object motion. The dynamic range and sensitivity of the measurement can be varied readily by altering the position of the mirror/s used in the optical setup. Theoretical analysis and experiment results are presented. ©2010 Optical Society of America.
Source Title: Optics Express
ISSN: 10944087
DOI: 10.1364/OE.18.011396
Appears in Collections:Staff Publications

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