Dr. Gary W. Carhart Profile

Dr. Gary W. Carhart

ARL Researcher at DEVCOM Army Research Lab

SPIE Involvement:

Author

Publications (32)

Proceedings Article | 4 June 2015 Paper

Hardware acceleration of lucky-region fusion (LRF) algorithm for high-performance real-time video processing

Tyler Browning, Christopher Jackson, Furkan Cayci, Gary Carhart, J. Liu, Fouad Kiamilev

Proceedings Volume 9451, 94512G (2015) https://doi.org/10.1117/12.2085864

KEYWORDS: Laser range finders, Image quality, Field programmable gate arrays, Image fusion, Algorithm development, Image processing, Turbulence, Video acceleration, Video, Cameras

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Proceedings Article | 17 September 2014 Paper

Real-time atmospheric imaging and processing with hybrid adaptive optics and hardware accelerated lucky-region fusion (LRF) algorithm

Jony Jiang Liu, Gary Carhart, Leonid Beresnev, Mathieu Aubailly, Christopher Jackson, Garrett Ejzak, Fouad Kiamilev

Proceedings Volume 9202, 920210 (2014) https://doi.org/10.1117/12.2062914

KEYWORDS: Laser range finders, Image processing, Adaptive optics, Image quality, Field programmable gate arrays, Cameras, Imaging systems, Video, Image fusion, Video processing

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Proceedings Article | 24 June 2014 Paper

Hardware acceleration of lucky-region fusion (LRF) algorithm for imaging

Christopher Jackson, Garrett Ejzak, Mathieu Aubailly, Gary Carhart, J. Liu, Fouad Kiamilev

Proceedings Volume 9070, 90703C (2014) https://doi.org/10.1117/12.2053898

KEYWORDS: Laser range finders, Cameras, Video, Field programmable gate arrays, Turbulence, Image fusion, Image processing, Video processing, Image quality, Imaging systems

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Proceedings Article | 31 May 2013 Paper

Hardware acceleration of lucky-region fusion (LRF) algorithm for image acquisition and processing

William Maignan, David Koeplinger, Gary Carhart, Mathieu Aubailly, Fouad Kiamilev, J. Jiang Liu

Proceedings Volume 8720, 87200B (2013) https://doi.org/10.1117/12.2016341

KEYWORDS: Laser range finders, Image quality, Cameras, Image processing, Field programmable gate arrays, Image fusion, Video, Atmospheric turbulence, Imaging systems, Turbulence

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Proceedings Article | 10 May 2012 Paper

Content-dependent on-the-fly visual information fusion for battlefield scenarios

Mathieu Aubailly, Mikhail Vorontsov, Gary Carhart, J. Jiang Liu, Richard Espinola

Proceedings Volume 8368, 83680J (2012) https://doi.org/10.1117/12.918681

KEYWORDS: Image fusion, Image quality, Laser range finders, High dynamic range imaging, Information fusion, RGB color model, Visualization, Image enhancement, Image visualization, Image processing

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Proceedings Article | 22 February 2011 Paper

Experimental study of phase locking of fiber collimators using internal beam-tail interference

Leonid Beresnev, Mikhail Vorontsov, Thomas Weyrauch, Gary Carhart, Svetlana Lachinova, Jiang Liu

Proceedings Volume 7914, 79142Z (2011) https://doi.org/10.1117/12.877300

KEYWORDS: Collimators, Mode locking, Beam splitters, Feedback control, Feedback loops, Wavefronts, Diffractive optical elements, Optical components, Photodiodes, Gaussian beams

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Proceedings Article | 12 August 2009 Paper

Automated video enhancement from a stream of atmospherically-distorted images: the lucky-region fusion approach

Mathieu Aubailly, Mikhail Vorontsov, Gary Carhart, Michael Valley

Proceedings Volume 7463, 74630C (2009) https://doi.org/10.1117/12.828332

KEYWORDS: Image fusion, Image quality, Laser range finders, Video, Data fusion, Image processing, Atmospheric optics, Atmospheric turbulence, Calibration, Cameras

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Proceedings Article | 20 August 2008 Paper

Development of adaptive fiber collimators for conformal fiber-based beam projection systems

Leonid Beresnev, Thomas Weyrauch, Mikhail Vorontsov, Ling Liu, Gary Carhart

Proceedings Volume 7090, 709008 (2008) https://doi.org/10.1117/12.800488

KEYWORDS: Actuators, Collimators, Polarization, Mode locking, Prototyping, Structured optical fibers, Projection systems, Interferometers, Metals, Control systems

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Proceedings Article | 20 August 2008 Paper

Image enhancement by local information fusion with pre-processing and composed metric

Mathieu Aubailly, Mikhail Vorontsov, Gary Carhart, Michael Valley

Proceedings Volume 7090, 709006 (2008) https://doi.org/10.1117/12.799874

KEYWORDS: Image quality, Image fusion, Information fusion, Image enhancement, Atmospheric turbulence, Cameras, Adaptive optics, Detection and tracking algorithms, Image processing, Data fusion

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Proceedings Article | 25 September 2007 Paper

Adaptive optical antennas: design and evaluation

Thomas Weyrauch, Mikhail Vorontsov, Gary Carhart, Galina Simonova, Leonid Beresnev, Ernst Polnau

Proceedings Volume 6708, 67080R (2007) https://doi.org/10.1117/12.739011

KEYWORDS: Antennas, Adaptive optics, Mirrors, Telecommunications, Atmospheric propagation, Transceivers, Atmospheric optics, Optical antennas, Free space optics, Deformable mirrors

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Proceedings Article | 25 September 2007 Paper

Adaptive compensation over a 2.33 km propagation path with retro reflectors under strong scintillation conditions

Ernst Polnau, Mikhail Vorontsov, Gary Carhart, Thomas Weyrauch, Leonid Beresnev

Proceedings Volume 6708, 67080C (2007) https://doi.org/10.1117/12.736310

KEYWORDS: Telescopes, Control systems, Adaptive optics, Reflectors, Signal detection, Sensors, Deformable mirrors, Fiber lasers, Turbulence, Atmospheric propagation

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Proceedings Article | 13 September 2005 Paper

Atmospheric laser communication system with wide-angle tracking and adaptive compensation

G. Carhart, M. Vorontsov, L. Beresnev, P. Paicopolis, F. Beil

Proceedings Volume 5892, 589211 (2005) https://doi.org/10.1117/12.618363

KEYWORDS: Control systems, Mirrors, Transceivers, Telecommunications, Adaptive optics, Laser communications, Laser systems engineering, Optical antennas, Antennas, Computed tomography

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Proceedings Article | 23 August 2005 Paper

Integrated analog filter bank for adaptive optics speckle field statistical analysis

Yunbin Deng, Gert Cauwenberghs, Ernst Polnau, Gary Carhart, Mikhail Vorontsov

Proceedings Volume 5895, 58950L (2005) https://doi.org/10.1117/12.617743

KEYWORDS: Speckle, Image quality, Linear filtering, Analog electronics, Statistical analysis, Spectrum analysis, Adaptive optics, Very large scale integration, Digital filtering, Imaging systems

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Proceedings Article | 25 October 2004 Paper

Two-dimensional optoelectronic interconnect-processor and its operational bit error rate

J. Jiang Liu, Brian Gollsneider, Wayne Chang, Gary Carhart, Mikhail Vorontsov, George Simonis, Barry Shoop

Proceedings Volume 5595, (2004) https://doi.org/10.1117/12.573130

KEYWORDS: Vertical cavity surface emitting lasers, Receivers, Optical interconnects, Sapphire, Image processing, Eye, Optoelectronics, Photodetectors, Transmitters, Oscilloscopes

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Proceedings Article | 18 October 2004 Paper

Wavefront tip-tilt/focus-defocus control using a deformable piezoceramic mirror

Carlos Hernandez, Gary Carhart

Proceedings Volume 5552, (2004) https://doi.org/10.1117/12.562391

KEYWORDS: Mirrors, Control systems, Receivers, Transmitters, Transceivers, Deformable mirrors, Digital signal processing, Signal processing, Wavefronts, Atmospheric propagation

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Proceedings Article | 11 December 2003 Paper

Adaptive compensation of the effects of nonstationary thermal blooming based on the stochastic parallel gradient descent optimization method

Gary Carhart, Greg Simer, Mikhail Vorontsov

Proceedings Volume 5162, (2003) https://doi.org/10.1117/12.507307

KEYWORDS: Thermal effects, Thermal blooming, Speckle, Mirrors, Control systems, Camera shutters, Deformable mirrors, Atmospheric propagation, Wavefronts, CCD cameras

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Proceedings Article | 11 December 2003 Paper

Atmospheric laser optics testbed (A_LOT): atmospheric propagation characterization, beam control, and imaging results

Mikhail Vorontsov, Gary Carhart, Matt Banta, Thomas Weyrauch, John Gowens, John Carrano

Proceedings Volume 5162, (2003) https://doi.org/10.1117/12.507524

KEYWORDS: Fourier transforms, Video, Sensors, Atmospheric turbulence, Telecommunications, Atmospheric propagation, Image quality, Imaging systems, Atmospheric optics, Laser communications

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Proceedings Article | 6 November 2002 Paper

Target-in-the-loop adaptive optics: wavefront control in strong speckle-modulation conditions

Mikhail Vorontsov, Gary Carhart, John Gowens

Proceedings Volume 4825, (2002) https://doi.org/10.1117/12.457855

KEYWORDS: Speckle, Adaptive optics, Wavefronts, Receivers, CCD cameras, Control systems, Electrodes, Adaptive control, Phase shift keying, Deformable mirrors

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Proceedings Article | 6 November 2002 Paper

Dual frequency nematic liquid crystal spatial light modulator with modulation depth 0-2pi and operation rate in hundreds Hz region

Leonid Beresnev, Gary Carhart, David Campbell, John Gonglewski, David Dayton

Proceedings Volume 4825, (2002) https://doi.org/10.1117/12.451969

KEYWORDS: Liquid crystals, Phase shift keying, Modulation, Spatial light modulators, Phase modulation, Analytical research, Anisotropy, Fast packet switching, Wavefronts, Modulators

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Proceedings Article | 1 February 2002 Paper

Adaptive aberration correction based on an opto-electronic Zernike wavefront sensor and the decoupled stochastic parallel gradient descent control technique

Gary Carhart, Mikhail Vorontsov

Proceedings Volume 4493, (2002) https://doi.org/10.1117/12.454709

KEYWORDS: Sensors, Spatial light modulators, Wavefronts, Stochastic processes, Control systems, Phase shifts, Wavefront sensors, Optoelectronics, Image sensors, Adaptive optics

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Proceedings Article | 22 November 2000 Paper

Adaptive wavefront control using a nonlinear Zernike filter

Eric Justh, Mikhail Vorontsov, Gary Carhart, Leonid Beresnev, P. Krishnaprasad

Proceedings Volume 4124, (2000) https://doi.org/10.1117/12.407501

KEYWORDS: Nonlinear filtering, Wavefronts, Optical filters, Complex systems, Spatial light modulators, Phase shifts, Liquid crystals, Wavefront sensors, Digital filtering, Distortion

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Proceedings Article | 22 November 2000 Paper

Microelectronic very large-scale integrated systems for adaptive optics and advanced imaging

Marc Cohen, Gert Cauwenberghs, Mikhail Vorontsov, Gary Carhart

Proceedings Volume 4124, (2000) https://doi.org/10.1117/12.407498

KEYWORDS: Wavefronts, Very large scale integration, Control systems, Microelectromechanical systems, Adaptive optics, Mirrors, Image quality, Stochastic processes, Imaging systems, Photomicroscopy

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Proceedings Article | 22 November 2000 Paper

Optoelectronic Zernike filter for high-resolution wavefront analysis using phase only liquid crystal spatial light modulator

Gary Carhart, Mikhail Vorontsov, Eric Justh

Proceedings Volume 4124, (2000) https://doi.org/10.1117/12.407497

KEYWORDS: Sensors, Nonlinear filtering, Spatial light modulators, Phase measurement, Image sensors, Phase shifts, Liquid crystals, Optical filters, Optoelectronics, Image filtering

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Proceedings Article | 10 December 1999 Paper

Adaptive wavefront correction: a hybrid VLSI/optical system implementing parallel stochastic gradient descent

Marc Cohen, Mikhail Vorontsov, Gary Carhart, Gert Cauwenberghs

Proceedings Volume 3866, (1999) https://doi.org/10.1117/12.371322

KEYWORDS: Mirrors, Microelectromechanical systems, Control systems, Wavefronts, Stochastic processes, Very large scale integration, Distortion, Adaptive optics, Atmospheric optics, Transmitters

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Proceedings Article | 3 November 1999 Paper

Adaptive compensation of dynamic wavefront aberrations based on blind optimization technique

Vladimir Polejaev, Pierre Barbier, Gary Carhart, Mark Plett, David Rush, Mikhail Vorontsov

Proceedings Volume 3760, (1999) https://doi.org/10.1117/12.367580

KEYWORDS: Mirrors, Micromachined deformable membrane mirrors, Adaptive optics, Actuators, Deformable mirrors, Photodetectors, CCD cameras, Wavefronts, Stochastic processes, Telecommunications

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Proceedings Article | 3 November 1999 Paper

Adaptive wavefront correction using a VLSI implementation of the parallel gradient descent algorithm

Gary Carhart, Mikhail Vorontsov, Marc Cohen, Gert Cauwenberghs, R. Timothy Edwards

Proceedings Volume 3760, (1999) https://doi.org/10.1117/12.367576

KEYWORDS: Control systems, Very large scale integration, Wavefronts, Stochastic processes, Liquid crystals, Modulators, Adaptive optics, Spatial light modulators, Optimization (mathematics), Laser systems engineering

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Proceedings Article | 17 October 1997 Paper

Parallel perturbation gradient descent algorithm for adaptive wavefront correction

Gary Carhart, Jennifer Ricklin, Victor Sivokon, Mikhail Vorontsov

Proceedings Volume 3126, (1997) https://doi.org/10.1117/12.279040

KEYWORDS: Image quality, Wavefronts, Stochastic processes, Modulators, Distortion, Imaging systems, Control systems, Liquid crystals, Optimization (mathematics), Image quality standards

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Proceedings Article | 14 October 1996 Paper

Adaptive correction of phase-distorted extended-source images

Gary Carhart, Dimitri Pruidze, Jennifer Ricklin, David Voelz, Mikhail Vorontsov

Proceedings Volume 2828, (1996) https://doi.org/10.1117/12.254178

KEYWORDS: Image quality, Imaging systems, Electrodes, Mirrors, Deformable mirrors, Phase shift keying, Speckle, Liquid crystals, Monochromatic aberrations, Wavefronts

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SPIE Journal Paper | 1 November 1995

Optical simulation of phase-distorted imaging systems: nonlinear and adaptive optics approach

Mikhail Vorontsov, Jennifer Ricklin, Gary Carhart

OE, Vol. 34, Issue 11, (November 1995) https://doi.org/10.1117/12.10.1117/12.213607

KEYWORDS: Distortion, Imaging systems, Complex systems, Mirrors, Nonlinear optics, Phase shift keying, Electrodes, Deformable mirrors, Phase modulation, Feedback loops

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Proceedings Article | 1 November 1991 Paper

Empirical performance of binary phase-only synthetic discriminant functions

Gary Carhart, Bret Draayer, Paul Billings, Michael Giles

Proceedings Volume 1564, (1991) https://doi.org/10.1117/12.49724

KEYWORDS: Optical correlators, Binary data, Image filtering, Optical filters, Signal to noise ratio, Optical signal processing, Computer simulations, Systems modeling, Digital filtering, Digital imaging

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Proceedings Article | 27 December 1990 Paper

Rotation-invariant, time-integrating optical correlation recognition system

Thomas Walsh, Gary Carhart, Bret Draayer, Paul Billings, Michael Giles

Proceedings Volume 1347, (1990) https://doi.org/10.1117/12.23415

KEYWORDS: Image filtering, Optical filters, Target recognition, Binary data, Phase only filters, Cameras, Integrated optics, Video, Optical correlators, System integration

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Proceedings Article | 1 September 1990 Paper

Composite filter trees and image recognition via binary search

Gary Carhart, Thomas Walsh, Michael Giles

Proceedings Volume 1295, (1990) https://doi.org/10.1117/12.21226

KEYWORDS: Image filtering, Composites, Binary data, Phase only filters, Superposition, Image processing, Optical filters, Optical correlators, Image resolution, Algorithm development

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Showing 5 of 32 publications

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