Dr. Leonidas Spinoulas Profile

Dr. Leonidas Spinoulas

Computer Scientist

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Publications (2)

Proceedings Article | 2 May 2019 Presentation + Paper

Quantitative laser speckle contrast imaging for presentation attack detection in biometric authentication systems

Claire Sun, Arun Jagannathan, Jonathan Habif, Mohamed Hussein, Leonidas Spinoulas, Wael Abd-Almageed

Proceedings Volume 11020, 1102008 (2019) https://doi.org/10.1117/12.2518268

KEYWORDS: Speckle, Laser speckle contrast imaging, Speckle pattern, Biometrics, Imaging systems, Light scattering, Cameras, Blood circulation, Laser scattering, Scattering

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SPIE Journal Paper | 14 September 2012 Open Access

Passive millimeter-wave imaging with compressive sensing

Nachappa Gopalsami, Shaolin Liao, Thomas Elmer, Eugene Koehl, Alexander Heifetz, Apostolos Paul Raptis, Leonidas Spinoulas, Aggelos Katsaggelos

OE, Vol. 51, Issue 9, 091614, (September 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.9.091614

KEYWORDS: Imaging systems, Compressed sensing, Extremely high frequency, Passive millimeter wave imaging, Image restoration, Signal to noise ratio, Raster graphics, Radiometry, Metals, Photomasks

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