Dr. Bradley M. Ratliff Profile

Dr. Bradley M. Ratliff

Associate Professor at University of Dayton

SPIE Involvement:

Awards Committee | Conference Program Committee | Conference Chair | Author

Area of Expertise:

Signal and Image Processing , Computer Vision , Pattern Recognition and Deep Learning , Infrared, Polarimetric, and Hyperspectral Imaging , Scene-based Algorithm Development , Remote Sensing

Publications (32)

Proceedings Article | 3 October 2023 Presentation + Paper

Presentation + Paper

A laboratory-aided empirically-driven polarimetric bidirectional reflectance distribution function model

Sultan Aldkeelalah, Bradley Ratliff, David Perry

Proceedings Volume 12690, 1269003 (2023) https://doi.org/10.1117/12.2677189

KEYWORDS: Sensors, Optical spheres, Light sources and illumination, Polarization, Data modeling, Polarimetry, Bidirectional reflectance transmission function, Reflection, 3D modeling, Cameras

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Proceedings Article | 3 October 2023 Poster + Paper

Poster + Paper

Deep learning approach to vehicle pose estimation from polarimetric image data

Matthew Siefring, Bradley Ratliff, Brett Ballard

Proceedings Volume 12690, 126900M (2023) https://doi.org/10.1117/12.2677123

KEYWORDS: RGB color model, Pose estimation, Polarimetry, Polarization, Light sources and illumination, Network architectures, Data modeling, Feature extraction, Deep learning

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Proceedings Article | 3 October 2023 Presentation + Paper

Presentation + Paper

Remote sensing solar simulation laboratory for polarimetric scene simulation

Bradley Ratliff

Proceedings Volume 12690, 1269002 (2023) https://doi.org/10.1117/12.2676763

KEYWORDS: Sensors, Polarimetry, Sun, Light sources and illumination, Remote sensing, Calibration, RGB color model, Cameras, Control systems, Light sources

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Proceedings Article | 3 June 2022 Presentation + Paper

Presentation + Paper

Demosaicing DoFP imaging polarimeter data from non-conventional modulation strategies

Bradley Ratliff, Garrett Sargent

Proceedings Volume 12112, 1211205 (2022) https://doi.org/10.1117/12.2619137

KEYWORDS: Modulation, Polarimetry, Modulators, Polarizers, Sensors, Image analysis, Staring arrays, Image sensors

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Proceedings Article | 3 June 2022 Presentation + Paper

Presentation + Paper

Simultaneous demosaicing and resolution enhancement of LWIR DoFP polarimeter data

Bradley Ratliff, Garrett Sargent

Proceedings Volume 12112, 1211206 (2022) https://doi.org/10.1117/12.2619135

KEYWORDS: Image resolution, Resolution enhancement technologies, Long wavelength infrared, Polarimetry, Image restoration, Data modeling, Sensors, Image processing, Image analysis, Image enhancement

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Proceedings Article | 1 August 2021 Presentation + Paper

Presentation + Paper

An empirically-driven model for reflective-band polarization phenomenology

Bradley Ratliff, Andrew Niklas, Collin Bright

Proceedings Volume 11833, 118330R (2021) https://doi.org/10.1117/12.2595372

KEYWORDS: Sensors, Sun, 3D modeling, Polarimetry, Data modeling, Polarization, Reflectivity, Cameras, Electro optical modeling

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Proceedings Article | 22 April 2020 Presentation + Paper

Presentation + Paper

A guided generative adversarial network demosaicing strategy for integrated microgrid polarimeter imagery

Bradley Ratliff, Garrett Sargent, Vijayan Asari

Proceedings Volume 11412, 1141202 (2020) https://doi.org/10.1117/12.2557448

KEYWORDS: Polarimetry, Polarization, Gallium nitride, Image resolution, Image processing, Sensors, Data modeling, Staring arrays, Cameras, Linear polarizers, Machine learning

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Proceedings Article | 14 May 2019 Presentation + Paper

Presentation + Paper

Assessment of residual fixed pattern noise on hyperspectral detection performance

Bradley Ratliff, Carl Cusumano, Jason Kaufman, Joseph Meola

Proceedings Volume 10986, 109861H (2019) https://doi.org/10.1117/12.2519156

KEYWORDS: Target detection, Sensors, Calibration, Detection and tracking algorithms, Latex, Image sensors, Staring arrays, Cameras, Signal to noise ratio, Hyperspectral imaging, Scene based nonuniformity corrections

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Proceedings Article | 8 September 2017 Presentation + Paper

Presentation + Paper

Moving towards more intuitive display strategies for polarimetric image data

Bradley Ratliff, J. Scott Tyo

Proceedings Volume 10407, 104070E (2017) https://doi.org/10.1117/12.2272262

KEYWORDS: Polarimetry, Image enhancement, Polarization, Visible radiation, Infrared imaging, Infrared radiation, Computer vision technology, Image contrast enhancement, Machine vision

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Proceedings Article | 30 August 2017 Presentation + Paper

Presentation + Paper

Single image super-resolution via regularized extreme learning regression for imagery from microgrid polarimeters

Vijayan Asari, Bradley Ratliff, Garrett Sargent

Proceedings Volume 10407, 104070C (2017) https://doi.org/10.1117/12.2273945

KEYWORDS: Polarimetry, Polarization, Super resolution, Spatial resolution, Computer vision technology, Modulation, Polarizers, Staring arrays, Sensors, Visual process modeling

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SPIE Journal Paper | 3 September 2015

Scene-based correction of fixed pattern noise in hyperspectral image data using temporal reordering

Bradley Ratliff, Jason Kaufman

OE, Vol. 54, Issue 09, 093102, (September 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.9.093102

KEYWORDS: Detection and tracking algorithms, Sensors, Calibration, Target detection, Staring arrays, Optical engineering, Hyperspectral imaging, Statistical analysis, Data modeling, Error analysis

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Proceedings Article | 1 September 2015 Paper

Paper

Bilateral bad pixel and Stokes image reconstruction for microgrid polarimetric imagers

Daniel LeMaster, Bradley Ratliff

Proceedings Volume 9613, 961304 (2015) https://doi.org/10.1117/12.2188854

KEYWORDS: Image filtering, Polarimetry, Image restoration, Statistical analysis, Image analysis, Digital filtering, Polarization, Gaussian filters, Imaging systems, Image processing

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Proceedings Article | 21 May 2015 Paper

Paper

On the effects of spatial and spectral resolution on spatial-spectral target detection in SHARE 2012 and Bobcat 2013 hyperspectral imagery

Jason Kaufman, Michael Eismann, Bradley Ratliff, Mehmet Celenk

Proceedings Volume 9472, 94720J (2015) https://doi.org/10.1117/12.2177503

KEYWORDS: Target detection, Feature extraction, Hyperspectral imaging, Short wave infrared radiation, Image processing, Sensors, Image fusion, Spectral resolution, Image sensors, Visible radiation

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Proceedings Article | 27 September 2013 Paper

Paper

SWIR active polarization imaging for material identification

Daniel LeMaster, Bradley Ratliff, J. Scott Tyo, Andrey Alenin, Adoum Mahamat, Bradley Koch

Proceedings Volume 8873, 88730O (2013) https://doi.org/10.1117/12.2023351

KEYWORDS: Imaging systems, Polarization, Polarimetry, Target detection, Short wave infrared radiation, Polysomnography, Detection and tracking algorithms, Metals, Wave plates, Linear polarizers

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Proceedings Article | 11 June 2012 Paper

Paper

Adaptive scene-based correction algorithm for removal of residual fixed pattern noise in microgrid image data

Daniel LeMaster, Bradley Ratliff

Proceedings Volume 8364, 83640N (2012) https://doi.org/10.1117/12.916697

KEYWORDS: Calibration, Sensors, Polarimetry, Image sensors, Cameras, Staring arrays, Black bodies, Long wavelength infrared, Radiometry, Error analysis

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Proceedings Article | 10 September 2011 Paper

Paper

Detection and tracking of RC model aircraft in LWIR microgrid polarimeter data

John Middendorf, Robert Mack, Daniel LeMaster, Bradley Ratliff, Pierre Villeneuve, Jeffrey Weinheimer

Proceedings Volume 8160, 816002 (2011) https://doi.org/10.1117/12.894669

KEYWORDS: Data modeling, Polarimetry, Target detection, Polarization, Sensors, Long wavelength infrared, Calibration, Thermal modeling, Image processing, Image sensors

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Proceedings Article | 24 August 2009 Paper

Paper

Examining IFOV error and demodulation strategies for infrared microgrid polarimeter imagery

Bradley Ratliff, Wiley Black, J. Scott Tyo, Charles LaCasse

Proceedings Volume 7461, 74610H (2009) https://doi.org/10.1117/12.823846

KEYWORDS: Polarization, Modulation transfer functions, Polarimetry, Intermodulation, Error analysis, Demodulation, Modulation, Sensors, Image analysis, Image resolution

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Proceedings Article | 12 August 2009 Paper

Paper

Exploiting motion-based redundancy to enhance microgrid polarimeter imagery

Charles LaCasse, Bradley Ratliff, Wiley Black, J. Scott Tyo

Proceedings Volume 7461, 74610K (2009) https://doi.org/10.1117/12.823849

KEYWORDS: Image resolution, Resolution enhancement technologies, Image enhancement, Polarimetry, Polarization, Image analysis, Motion estimation, Staring arrays, Image processing, Imaging systems

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SPIE Journal Paper | 1 April 2008

Unpolarized calibration and nonuniformity correction for long-wave infrared microgrid imaging polarimeters

David Bowers, James Boger, David Wellems, Stephen Ortega, Matthew Fetrow, John Hubbs, Wiley Black, Bradley Ratliff, J. Scott Tyo

OE, Vol. 47, Issue 04, 046403, (April 2008) https://doi.org/10.1117/12.10.1117/1.2911715

KEYWORDS: Calibration, Polarimetry, Polarization, Nonuniformity corrections, Long wavelength infrared, Staring arrays, Polarizers, Sensors, Optical spheres, Infrared radiation

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Proceedings Article | 31 March 2008 Paper

Paper

Polarization visual enhancement technique for LWIR microgrid polarimeter imagery

J. Scott Tyo, Bradley Ratliff, Wiley Black, James Boger, David Bowers

Proceedings Volume 6972, 69720N (2008) https://doi.org/10.1117/12.783079

KEYWORDS: Polarization, Polarimetry, Sensors, Staring arrays, Long wavelength infrared, Image fusion, Visualization, Image analysis, Calibration, Image enhancement

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Proceedings Article | 13 September 2007 Paper

Paper

Mitigation of image artifacts in LWIR microgrid polarimeter images

James Boger, David Bowers, Bradley Ratliff, Rakesh Kumar, J. Scott Tyo, Wiley Black

Proceedings Volume 6682, 668209 (2007) https://doi.org/10.1117/12.737439

KEYWORDS: Polarization, Polarimetry, Staring arrays, Long wavelength infrared, Polarizers, Sensors, Calibration, Visualization, Image resolution, Algorithm development

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Proceedings Article | 13 September 2007 Paper

Paper

Motion-based nonuniformity correction in DoFP polarimeters

J. Scott Tyo, Bradley Ratliff, Rakesh Kumar

Proceedings Volume 6682, 668218 (2007) https://doi.org/10.1117/12.731460

KEYWORDS: Polarimetry, Staring arrays, Sensors, Calibration, Polarization, Motion models, Algorithm development, Nonuniformity corrections, Error analysis, Cameras

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Proceedings Article | 3 May 2006 Paper

Paper

Evaluation and display of polarimetric image data using long-wave cooled microgrid focal plane arrays

L. David Wellems, James Boger, David Bowers, John Hubbs, Matthew Fetrow, Steve Ortega, J. Scott Tyo, Bradley Ratliff, Wiley Black

Proceedings Volume 6240, 62400F (2006) https://doi.org/10.1117/12.666600

KEYWORDS: Staring arrays, Polarimetry, Nonuniformity corrections, Calibration, Polarization, Image fusion, Polarizers, Thermography, Sensors, Cameras

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Proceedings Article | 3 May 2006 Paper

Paper

Image processing methods to compensate for IFOV errors in microgrid imaging polarimeters

Matthew Fetrow, James Boger, J. Scott Tyo, Wiley Black, Bradley Ratliff

Proceedings Volume 6240, 62400E (2006) https://doi.org/10.1117/12.666595

KEYWORDS: Polarization, Polarimetry, Sensors, Error analysis, Staring arrays, Data modeling, Optical spheres, Aluminum, Actinium, Image processing

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Proceedings Article | 18 August 2005 Paper

Paper

Combatting infrared focal plane array nonuniformity noise in imaging polarimeters

Wiley Black, Bradley Ratliff, James Boger, J. Scott Tyo, Rakesh Kumar

Proceedings Volume 5888, 58880J (2005) https://doi.org/10.1117/12.613075

KEYWORDS: Calibration, Polarimetry, Staring arrays, Signal to noise ratio, Polarization, Infrared imaging, Sensors, Thermography, Wave plates, Infrared radiation

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Proceedings Article | 18 August 2005 Paper

Paper

Modeling precision and accuracy of a LWIR microgrid array imaging polarimeter

Wiley Black, Bradley Ratliff, James Boger, Matthew Fetrow, J. Scott Tyo, Rakesh Kumar

Proceedings Volume 5888, 58880U (2005) https://doi.org/10.1117/12.613658

KEYWORDS: Polarization, Sensors, Polarimetry, Long wavelength infrared, Optical spheres, Instrument modeling, Nonuniformity corrections, Staring arrays, Imaging systems, Device simulation

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Proceedings Article | 4 November 2004 Paper

Paper

Generalized algebraic algorithm for scene-based nonuniformity correction

J. Scott Tyo, Kamil Agi, Bradley Ratliff, Majeed Hayat

Proceedings Volume 5556, (2004) https://doi.org/10.1117/12.557650

KEYWORDS: Sensors, Calibration, Detection and tracking algorithms, Nonuniformity corrections, Staring arrays, Algorithm development, Motion estimation, Infrared imaging, Error analysis, Infrared radiation

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Proceedings Article | 2 November 2004 Paper

Paper

An algebraic restoration method for estimating fixed-pattern noise in infrared imagery from a video sequence

Majeed Hayat, Russell Hardie, J. Scott Tyo, Unal Sakoglu, Bradley Ratliff

Proceedings Volume 5558, (2004) https://doi.org/10.1117/12.557902

KEYWORDS: Calibration, Sensors, Video, Cameras, Infrared imaging, Infrared radiation, Motion models, Nonuniformity corrections, Staring arrays, Matrices

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Proceedings Article | 12 December 2003 Paper

Paper

Error evaluation template for use with imaging spectro-polarimeters

Brad Ratliff, David Bowers, Matthew Fetrow, James Boger, Sheldon Stokes

Proceedings Volume 5158, (2003) https://doi.org/10.1117/12.508650

KEYWORDS: Polarimetry, Error analysis, Wave plates, Polarization, Instrument modeling, Data modeling, Sensors, Data acquisition, Calibration, Error control coding

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Proceedings Article | 22 August 2003 Paper

Paper

Algorithm for radiometrically accurate nonuniformity correction with arbitrary scene motion

Bradley Ratliff, Majeed Hayat, J. Scott Tyo

Proceedings Volume 5076, (2003) https://doi.org/10.1117/12.487347

KEYWORDS: Calibration, Sensors, Nonuniformity corrections, Staring arrays, Detection and tracking algorithms, Motion models, Error analysis, Cameras, Infrared imaging, Motion estimation

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Proceedings Article | 23 January 2003 Paper

Paper

Radiometrically calibrated scene-based nonuniformity correction for infrared array sensors

Bradley Ratliff, Majeed Hayat, J. Scott Tyo

Proceedings Volume 4820, (2003) https://doi.org/10.1117/12.450916

KEYWORDS: Calibration, Sensors, Detection and tracking algorithms, Nonuniformity corrections, Staring arrays, Infrared sensors, Infrared radiation, Infrared imaging, Motion models, Photodetectors

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Proceedings Article | 10 September 2001 Paper

Paper

Algebraic scene-based nonuniformity correction in focal plane arrays

Bradley Ratliff, Russell Hardie, Majeed Hayat

Proceedings Volume 4372, (2001) https://doi.org/10.1117/12.439146

KEYWORDS: Infrared imaging, Infrared radiation, Sensors, Algorithm development, Detection and tracking algorithms, Staring arrays, Nonuniformity corrections, Error analysis, Imaging systems, Tolerancing

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Showing 5 of 32 publications

Conference Committee Involvement (6)

Polarization: Measurement, Analysis, and Remote Sensing XVI

22 April 2024 | National Harbor, Maryland, United States

Polarization: Measurement, Analysis, and Remote Sensing XVI

22 April 2024 | National Harbor, Maryland, United States

Polarization Science and Remote Sensing XI

21 August 2023 | San Diego, California, United States

Polarization: Measurement, Analysis, and Remote Sensing XV

4 April 2022 | Orlando, Florida, United States

Polarization Science and Remote Sensing X

1 August 2021 | San Diego, California, United States

Showing 5 of 6 Conference Committees

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