Dr. Gregory H. Bearman Profile

Dr. Gregory H. Bearman

Consultant

SPIE Involvement:

Author

Publications (20)

Proceedings Article | 8 November 2020 Presentation + Paper

Hyperspectral band selection for food fraud application using self-organizing maps (SOM)

John Chauvin, Jianwei Qin, Diane Chan, Moon Kim, Fartash Vasefi, Kouhyar Tavakolian, Hossein Salehfar, Gregory Bearman, Nicholas MacKinnon

Proceedings Volume 11525, 115250Z (2020) https://doi.org/10.1117/12.2580611

KEYWORDS: Wavelet packet decomposition, Luminescence, Hyperspectral imaging, Genetics, Machine learning, Infrared radiation, Infrared imaging, Image classification

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Proceedings Article | 22 February 2013 Paper

In vivo skin chromophore mapping using a multimode imaging dermoscope (SkinSpect™)

Fartash Vasefi, Nicholas MacKinnon, Eugene Gussakovsky, Gregory Bearman, Daniel Farkas, Robert Chave

Proceedings Volume 8587, 85870U (2013) https://doi.org/10.1117/12.2005587

KEYWORDS: Skin, RGB color model, Data modeling, Polarization, Tissues, Chromophores, Reflectivity, Melanoma, Tissue optics, Luminescence

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SPIE Journal Paper | 1 January 2011 Open Access

Multispectral imaging of tissue absorption and scattering using spatial frequency domain imaging and a computed-tomography imaging spectrometer

Jessie Weber, Anthony Durkin, Bruce Tromberg, David Cuccia, William Johnson, Daniel Wilson, Gregory Bearman, Mike Hsu, Alexander Lin, Devin Binder

JBO, Vol. 16, Issue 1, 011015, (January 2011) https://doi.org/10.1117/12.10.1117/1.3528628

KEYWORDS: Absorption, Scattering, Tissue optics, Tissues, Spatial frequencies, Optical properties, Multispectral imaging, Spectroscopy, Brain mapping, Brain

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SPIE Journal Paper | 1 January 2007 Open Access

Snapshot hyperspectral imaging in ophthalmology

William Johnson, Daniel Wilson, Wolfgang Fink, Mark Humayun, Gregory Bearman

JBO, Vol. 12, Issue 01, 014036, (January 2007) https://doi.org/10.1117/12.10.1117/1.2434950

KEYWORDS: Hyperspectral imaging, Oxygen, Cameras, Sensors, Spectroscopy, Ophthalmology, Retina, Oximetry, Image sensors, Absorption

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Proceedings Article | 23 March 2005 Paper

Volume holographic spectral imaging

Wenhai Liu, William Johnson, Demetri Psaltis, Gregory Bearman, Zhenyu Li

Proceedings Volume 5694, (2005) https://doi.org/10.1117/12.611350

KEYWORDS: Holograms, Volume holography, Diffraction, Imaging spectroscopy, Quantum dots, Spectroscopy, Imaging systems, Holography, Spatial resolution, Multiplexing

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Proceedings Article | 30 December 2004 Paper

An all-reflective computed tomography imaging spectrometer

Gregory Bearman, Johan Backlund, Daniel Wilson, William Johnson

Proceedings Volume 5660, (2004) https://doi.org/10.1117/12.568505

KEYWORDS: Computer generated holography, Microelectromechanical systems, Mirrors, Spectroscopy, Reflectivity, Staring arrays, Modulation transfer functions, Tomography, Optical design, Computed tomography

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Proceedings Article | 17 June 2002 Paper

Sensitive imaging of spectrally overlapping flourochromes using the LSM 510 META

Christopher Waters, Scott Fraser, Ralf Wolleschensky, Mary Dickinson, Gregory Bearman, Sebastian Tille

Proceedings Volume 4620, (2002) https://doi.org/10.1117/12.470686

KEYWORDS: Sensors, Imaging systems, Optical filters, Microscopy, Multispectral imaging, Green fluorescent protein, Linear filtering, Image filtering, Proteins, Fluorescence resonance energy transfer

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Proceedings Article | 6 June 2002 Paper

High-Q whispering-gallery mode sensor in liquids

Lute Maleki, Vladimir Ilchenko, Gregory Bearman, Jay Nadeau, Dmitri Kossakovski

Proceedings Volume 4629, (2002) https://doi.org/10.1117/12.469488

KEYWORDS: Optical spheres, Sensors, Molecules, Resonators, Proteins, Absorption, Liquids, Diffusion, Glasses, Chemistry

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SPIE Journal Paper | 1 July 2001 Open Access

Ablation spectra of the human cornea

David Cohen, Roy Chuck, Gregory Bearman, Peter McDonnell, Warren Grundfest

JBO, Vol. 6, Issue 03, (July 2001) https://doi.org/10.1117/12.10.1117/1.1380670

KEYWORDS: Cornea, Luminescence, Laser ablation, Tissues, Excimer lasers, Principal component analysis, Laser tissue interaction, Surgery, Laser therapeutics, Ultraviolet radiation

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SPIE Journal Paper | 1 July 2001 Open Access

Resolution of multiple GFP color variants and dyes using two-photon microscopy and imaging spectroscopy

Rusty Lansford, Gregory Bearman, Scott Fraser

JBO, Vol. 6, Issue 03, (July 2001) https://doi.org/10.1117/12.10.1117/1.1383780

KEYWORDS: Green fluorescent protein, Optical filters, Imaging spectroscopy, Fluorescent proteins, RGB color model, Microscopy, Image filtering, Tunable filters, Composites, Principal component analysis

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SPIE Journal Paper | 1 July 2000 Open Access

Consequences of scattering for spectral imaging of turbid biological tissue

Mark Arnoldussen, David Cohen, Gregory Bearman, Warren Grundfest

JBO, Vol. 5, Issue 03, (July 2000) https://doi.org/10.1117/12.10.1117/1.430000

KEYWORDS: Tissue optics, Scattering, Imaging spectroscopy, Backscatter, Natural surfaces, Reflectors, Imaging systems, Tissues, Systems modeling, Sensors

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Proceedings Article | 14 March 2000 Paper

Imaged backscatter from three-dimensional tissue structure

David Cohen, Gregory Bearman, Mark Arnoldussen, Warren Grundfest

Proceedings Volume 3920, (2000) https://doi.org/10.1117/12.379599

KEYWORDS: Photons, Tissue optics, Backscatter, Tissues, Scattering, Natural surfaces, Absorption, Light scattering, Chromophores, 3D modeling

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Proceedings Article | 26 July 1999 Paper

Application of infrared fiber optic imaging in atherosclerotic plaques

Basit Malik, Bujin Guo, Morteza Naghevi, James Willerson, Janice McNatt, Khawar Gul, S. Casscells, Gregory Bearman

Proceedings Volume 3698, (1999) https://doi.org/10.1117/12.354505

KEYWORDS: Infrared imaging, Infrared radiation, Thermography, Glasses, Fiber optics, Inflammation, Infrared cameras, Arteries, In vivo imaging, Calibration

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Proceedings Article | 6 May 1999 Paper

Effects of scattering in layered biological tissue on imaging spectroscopy data

Mark Arnoldussen, Warren Grundfest, David Cohen, Gregory Bearman

Proceedings Volume 3605, (1999) https://doi.org/10.1117/12.347570

KEYWORDS: Tissue optics, Reflectivity, Imaging spectroscopy, Scattering, Photon transport, Monte Carlo methods, Imaging systems, Tissues, Natural surfaces, Reflection

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Proceedings Article | 21 April 1999 Paper

Video-rate spectral imaging system for fluorescence microscopy

Ronald Lynch, Curtis Volin, Gregory Bearman, Michael Descour, Yashvinder Sabharwal, Andrew Rouse, Bridget Ford, Arthur Gmitro

Proceedings Volume 3603, (1999) https://doi.org/10.1117/12.346744

KEYWORDS: Microscopes, Luminescence, Confocal microscopy, Endoscopes, Imaging systems, Spectroscopy, Tissue optics, Cameras, Imaging spectroscopy, Microscopy

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Proceedings Article | 18 January 1999 Paper

Development of radiometric system models for performance comparison of proposed instruments

Betina Pavri, Gregory Bearman, Jack Margolis, Karen Liu, Philip Moynihan

Proceedings Volume 3533, (1999) https://doi.org/10.1117/12.336866

KEYWORDS: Instrument modeling, Spectroscopy, Systems modeling, Performance modeling, Fourier transforms, Signal to noise ratio, Electronic filtering, Radio optics, Motion models, Optical filters

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Proceedings Article | 16 October 1998 Paper

Video-rate spectral imaging of fluorescence phonomena

Bridget Ford, Paul Maker, Curtis Volin, Daniel Wilson, John Garcia, Gregory Bearman, Michael Descour

Proceedings Volume 3438, (1998) https://doi.org/10.1117/12.328119

KEYWORDS: Luminescence, Microscopes, Spectroscopy, Reconstruction algorithms, Data acquisition, Cameras, Imaging arrays, Imaging spectroscopy, Video, Optical filters

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Proceedings Article | 10 April 1998 Paper

High-speed spectral imager for imaging transient fluorescence phenomena

Michael Descour, Bridget Ford, Daniel Wilson, Gregory Bearman, Paul Maker

Proceedings Volume 3259, (1998) https://doi.org/10.1117/12.307327

KEYWORDS: Microscopes, Luminescence, Diffraction, Reconstruction algorithms, Spectroscopy, Imaging arrays, Imaging systems, Raster graphics, Imaging spectrometry, Data acquisition

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Proceedings Article | 6 January 1995 Paper

Multispectral imager for the agricultural user

Jessica Faust, Gregory Bearman, Thomas Chrien

Proceedings Volume 2345, (1995) https://doi.org/10.1117/12.198899

KEYWORDS: Imaging systems, Cameras, Agriculture, Spectrometers, Data acquisition, Process control, Vignetting, Multispectral imaging, Visualization, Printing

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Proceedings Article | 1 July 1992 Paper

Laser damage tests on InSb photodiodes at 1.064 um and 0.532 um

Gregory Bearman, J. Colin Mahoney, Craig Staller

Proceedings Volume 1686, (1992) https://doi.org/10.1117/12.60528

KEYWORDS: Diodes, Semiconductor lasers, Photodiodes, Black bodies, Sensors, Bandpass filters, Laser induced damage, Electronics, Data acquisition, Mirrors

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