Laser Applications

Analysis of laser speckle severity, granularity, and anisotropy using the power spectral density in polar-coordinate representation

[+] Author Affiliations
Desmond C. Ong

Data Storage Institute, A*STAR (Agency for Science, Technology and Research), Singapore 117608, Singapore

Sanjeev Solanki

Data Storage Institute, A*STAR (Agency for Science, Technology and Research), Singapore 117608, Singapore

Xinan Liang

Data Storage Institute, A*STAR (Agency for Science, Technology and Research), Singapore 117608, Singapore

Xuewu Xu

Data Storage Institute, A*STAR (Agency for Science, Technology and Research), Singapore 117608, Singapore

Opt. Eng. 51(5), 054301 (May 04, 2012). doi:10.1117/1.OE.51.5.054301
History: Received February 24, 2012; Revised March 28, 2012; Accepted April 2, 2012
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Abstract.  The conventional speckle contrast measures only speckle severity, and is unable to characterize granularity and anisotropy in displayed images, which are easily picked up by human observers. Here, we propose a comprehensive method based on the power spectral density which allows the simultaneous measurement of three components of laser speckle-severity, granularity and anisotropy—as a superior way to evaluate both speckle and speckle reduction techniques.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Desmond C. Ong ; Sanjeev Solanki ; Xinan Liang and Xuewu Xu
"Analysis of laser speckle severity, granularity, and anisotropy using the power spectral density in polar-coordinate representation", Opt. Eng. 51(5), 054301 (May 04, 2012). ; http://dx.doi.org/10.1117/1.OE.51.5.054301


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