Dr. Naomi E. Alexander Profile

Dr. Naomi E. Alexander

at Alfa Imaging SA

SPIE Involvement:

Author

Publications (12)

Proceedings Article | 9 June 2014 Paper

TeraSCREEN: multi-frequency multi-mode Terahertz screening for border checks

Naomi Alexander, Byron Alderman, Fernando Allona, Peter Frijlink, Ramón Gonzalo, Manfred Hägelen, Asier Ibáñez, Viktor Krozer, Marian Langford, Ernesto Limiti, Duncan Platt, Marek Schikora, Hui Wang, Marc Andree Weber

Proceedings Volume 9078, 907802 (2014) https://doi.org/10.1117/12.2049926

KEYWORDS: Information security, Imaging systems, Prototyping, Receivers, Antennas, Scanners, Spatial resolution, Control systems, Classification systems, Reflectivity

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Proceedings Article | 26 October 2012 Paper

IMAGINE project: a low cost, high performance, monolithic passive mm-wave imager front-end

N. Alexander, P. Frijlink, J. Hendricks, E. Limiti, S. Löffler, C. Macdonald, H. Maher, L. Pettersson, D. Platt, P. Rice, M. Riester, D. Schulze, V. Vassilev

Proceedings Volume 8544, 854404 (2012) https://doi.org/10.1117/12.976860

KEYWORDS: Antennas, Radiometry, Diodes, Sensors, Metals, Manufacturing, Imaging systems, Semiconducting wafers, Prototyping, Polymers

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Proceedings Article | 27 April 2010 Paper

Body-borne IED detection: NATO DAT#10 BELCOAST 09 demonstration results

Naomi Alexander, Ignacio Gómez, Isabel Ortega, Franco Fiore, Cristian Coman

Proceedings Volume 7670, 76700G (2010) https://doi.org/10.1117/12.850682

KEYWORDS: Imaging systems, Image processing, Metals, Improvised explosive devices, Image segmentation, Image fusion, Improvised explosive device detection, Explosives, Detection and tracking algorithms, Defense and security

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Proceedings Article | 30 April 2009 Paper

Suicide bomber detection

Naomi Alexander, Carlos Callejero, Franco Fiore, Ignacio Gómez, Ramón Gonzalo, Álvaro Enríquez de Luna, Iñigo Ederra, Inés Palacios

Proceedings Volume 7309, 73090D (2009) https://doi.org/10.1117/12.818614

KEYWORDS: Explosives, Liquids, Imaging systems, Improvised explosive devices, Explosives detection, Solids, Image processing, Opacity, Detection and tracking algorithms, Metals

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Proceedings Article | 4 April 2008 Paper

Multispectral mm-wave imaging: materials and images

Naomi Alexander, Carlos Callejero Andrés, Ramón Gonzalo

Proceedings Volume 6948, 694803 (2008) https://doi.org/10.1117/12.778698

KEYWORDS: Polarization, Infrared imaging, Multispectral imaging, Opacity, Packaging, Visible radiation, Image resolution, Antennas, Network security, Foam

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SPIE Journal Paper | 1 September 2005

Design and development of a high-performance passive millimeter-wave imager for aeronautical applications

Alan Lettington, D. Dunn, Naomi Alexander, Anas Wabby, Brendan Lyons, Rory Doyle, John Walshe, Magdy Attia, Isaiah Blankson

OE, Vol. 44, Issue 09, 093202, (September 2005) https://doi.org/10.1117/12.10.1117/1.2050447

KEYWORDS: Mirrors, Receivers, Imaging systems, Scanners, Servomechanisms, Point spread functions, Computer programming, Spatial resolution, Staring arrays, Analog electronics

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Proceedings Article | 19 May 2005 Paper

A new opto-mechanical scanner for millimeter and sub-millimeter wave imaging

A. Lettington, N. Alexander, D. Dunn

Proceedings Volume 5789, (2005) https://doi.org/10.1117/12.597745

KEYWORDS: Mirrors, Imaging systems, Receivers, Scanners, Double patterning technology, Extremely high frequency, Raster graphics, Aluminum, Thermography, Spatial resolution

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Proceedings Article | 8 December 2004 Paper

Techniques for millimetre-wave imaging

Alan Lettington, Dennis Dunn, Naomi Alexander, Anas Wabby, Chun-Hong Chen

Proceedings Volume 5619, (2004) https://doi.org/10.1117/12.568549

KEYWORDS: Receivers, Imaging systems, Antennas, Scanners, Phased arrays, Mirrors, Wavefronts, Sensors, Spatial resolution, Millimeter wave imaging

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Proceedings Article | 10 November 2004 Paper

Constrained image restoration applied to passive millimeter-wave images

Alan Lettington, Naomi Alexander

Proceedings Volume 5573, (2004) https://doi.org/10.1117/12.565103

KEYWORDS: Image restoration, Point spread functions, Spatial frequencies, Image enhancement, Super resolution, Imaging systems, Algorithm development, Gold, Convolution, Passive millimeter wave imaging

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Proceedings Article | 12 August 2004 Paper

Constrained image restoration for use in passive millimeter-wave imaging

Alan Lettington, Naomi Alexander, Eriso Boukouvala

Proceedings Volume 5410, (2004) https://doi.org/10.1117/12.533492

KEYWORDS: Image restoration, Spatial frequencies, Point spread functions, Image enhancement, Filtering (signal processing), Passive millimeter wave imaging, Imaging systems, Passive millimeter wave sensors, Image filtering, Gold

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Proceedings Article | 12 August 2004 Paper

Design and development of a high-performance passive millimeter-wave imager for aeronautical applications

Alan Lettington, Dennis Dunn, Naomi Alexander, Anas Wabby, Brendan Lyons, Rory Doyle, John Walshe, Magdy Attia, Isaiah Blankson

Proceedings Volume 5410, (2004) https://doi.org/10.1117/12.546518

KEYWORDS: Mirrors, Receivers, Imaging systems, Scanners, Servomechanisms, Computer programming, Spatial resolution, Point spread functions, Staring arrays, Content addressable memory

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Proceedings Article | 20 August 2003 Paper

Use of constraints in the superresolution of passive millimeter-wave images

Alan Lettington, Dennis Dunn, Malcolm Rollason, Naomi Alexander, Marc Yallop

Proceedings Volume 5077, (2003) https://doi.org/10.1117/12.497519

KEYWORDS: Spatial frequencies, Filtering (signal processing), Expectation maximization algorithms, Passive millimeter wave sensors, Imaging systems, Image restoration, Super resolution, Signal to noise ratio, Diffraction, Point spread functions

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Showing 5 of 12 publications

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