Dr. Dennis J. Gregoris Profile

Dr. Dennis J. Gregoris

Staff Engineer

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Publications (6)

Proceedings Article | 14 May 2007 Paper

An infrared solution to a national priority NASA ice detection and measurement problem

Thomas Meitzler, Darryl Bryk, Euijung Sohn, Mary Bienkowski, Gregory Smith, Kimberly Lane, Rachel Jozwiak, Thomas Moss, Robert Speece, Charles Stevenson, Dennis Gregoris, James Ragusa

Proceedings Volume 6542, 65423I (2007) https://doi.org/10.1117/12.716915

KEYWORDS: Cameras, Calibration, Inspection, Infrared radiation, Dielectrics, Reflectivity, Infrared cameras, Infrared detectors, Imaging systems, Sensors

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Proceedings Article | 1 September 2004 Paper

Laser imaging sensor system for on-orbit space shuttle inspection

Dennis Gregoris, Arkady Ulitsky, Dennis Vit, Andy Kerr, Peter Dorcas, George Bailak, Jeffrey Tripp, Ross Gillett, Chris Woodland, Robert Richards, Christian Sallaberger

Proceedings Volume 5418, (2004) https://doi.org/10.1117/12.547899

KEYWORDS: LIDAR, Inspection, Sensors, Imaging systems, Cameras, Video, Data modeling, Scanners, Motion measurement, Data storage

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Proceedings Article | 17 October 1994 Paper

Detection of dim targets in FLIR imagery using multiscale transforms

Dennis Gregoris, Simon Yu, Steve Tritchew, Leandre Sevigny

Proceedings Volume 2269, (1994) https://doi.org/10.1117/12.188698

KEYWORDS: Target detection, Image filtering, Detection and tracking algorithms, Forward looking infrared, Transform theory, Wavelet transforms, Image processing, Image segmentation, Nonlinear filtering, Infrared technology

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Proceedings Article | 15 March 1994 Paper

Wavelet transform-based filtering for the enhancement of dim targets in FLIR images

Dennis Gregoris, Simon Yu, Steve Tritchew, Leandre Sevigny

Proceedings Volume 2242, (1994) https://doi.org/10.1117/12.170058

KEYWORDS: Image filtering, Target detection, Wavelets, Nonlinear filtering, Discrete wavelet transforms, Forward looking infrared, Spatial filters, Databases, Detection and tracking algorithms, Signal to noise ratio

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Proceedings Article | 22 December 1992 Paper

Mid- and far-infrared measurements of sun glint from the sea surface

Alfred Cooper, Eugene Crittenden, Edmund Milne, Philip Walker, E. Moss, Dennis Gregoris

Proceedings Volume 1749, (1992) https://doi.org/10.1117/12.138846

KEYWORDS: Polarization, Sun, Reflection, Infrared radiation, Infrared imaging, Solar radiation, Solar radiation models, Atmospheric modeling, Imaging systems, Sensors

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Proceedings Article | 21 September 1992 Paper

Dual-band infrared polarization measurements of sun glint from the sea surface

Dennis Gregoris, Simon Yu, Alfred Cooper, Edmund Milne

Proceedings Volume 1687, (1992) https://doi.org/10.1117/12.137866

KEYWORDS: Polarization, Long wavelength infrared, Mid-IR, Sun, Polarizers, Cameras, Signal to noise ratio, Infrared radiation, Sensors, Atmospheric modeling

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Showing 5 of 6 publications

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