Prof. Brian D. Rigling Profile

Prof. Brian D. Rigling

at Univ of Dayton

SPIE Involvement:

Conference Program Committee | Author

Publications (39)

Proceedings Article | 13 June 2023 Presentation + Paper

Efficient computation of superresolution methods for SAR imaging

Alex Batts, Brian Rigling

Proceedings Volume 12520, 1252008 (2023) https://doi.org/10.1117/12.2665913

KEYWORDS: Matrices, Synthetic aperture radar, Tunable filters, Signal filtering, Speckle, Super resolution, Autocorrelation, Signal processing, Image filtering

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Proceedings Article | 31 May 2022 Presentation + Paper

Episodic processing of SAR scenes over varied wide apertures

Brian Rigling

Proceedings Volume 12095, 1209503 (2022) https://doi.org/10.1117/12.2620558

KEYWORDS: Image processing, Synthetic aperture radar, Scattering, Signal processing, Sensors

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Proceedings Article | 12 April 2021 Presentation + Paper

Episodic processing for characterization of wide-angle SAR scattering behavior

Brian Rigling

Proceedings Volume 11728, 117280B (2021) https://doi.org/10.1117/12.2585815

KEYWORDS: Scattering, Synthetic aperture radar, Spatial resolution, Image resolution, Radar

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Proceedings Article | 10 May 2018 Presentation + Paper

Atmospheric effects and impact on target classification for Synthetic Aperture Ladar (SAL) imagery

Rose Rustowicz, Jacob Ross, Lawrence Barnes, Brett Keaffaber, Brian Rigling, Edward Watson

Proceedings Volume 10636, 1063609 (2018) https://doi.org/10.1117/12.2303925

KEYWORDS: Atmospheric modeling, Image classification, Synthetic aperture radar, Ray tracing, LIDAR, Error analysis, Sensors, Data modeling, Speckle, Synthetic aperture imaging

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Proceedings Article | 3 May 2017 Paper

Using phase for radar scatterer classification

Linda Moore, Brian Rigling, Robert Penno, Edmund Zelnio

Proceedings Volume 10201, 102010J (2017) https://doi.org/10.1117/12.2267832

KEYWORDS: Optical spheres, Signal to noise ratio, Scattering, Synthetic aperture radar, Detection and tracking algorithms, Electromagnetic scattering, Sensors, Radar, Automatic target recognition, Feature extraction, Error analysis

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Proceedings Article | 1 May 2017 Presentation + Paper

Automatic threshold selection for multi-class open set recognition

Matthew Scherreik, Brian Rigling

Proceedings Volume 10202, 102020K (2017) https://doi.org/10.1117/12.2262666

KEYWORDS: Calibration, Lawrencium, Algorithm development, Detection and tracking algorithms, Automatic target recognition, Target recognition, Principal component analysis, Logic, Library classification systems, Data modeling

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Proceedings Article | 28 April 2017 Presentation + Paper

Analysis of speckle and material properties in laider tracer

Jacob Ross, Brian Rigling, Edward Watson

Proceedings Volume 10201, 1020102 (2017) https://doi.org/10.1117/12.2261157

KEYWORDS: Synthetic aperture imaging, Synthetic apertures, Electroluminescence, Data modeling, Sensors, Computer simulations, Speckle, LIDAR, Bidirectional reflectance transmission function, Optical simulations, Ray tracing, Reflectivity, Databases

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Proceedings Article | 14 May 2016 Paper

Performance prediction of multinomial pattern matching under ideal point response variations

Matthew Horvath, Brian Rigling

Proceedings Volume 9843, 98430O (2016) https://doi.org/10.1117/12.2223226

KEYWORDS: Image processing, Automatic target recognition, Image resolution, Synthetic aperture radar, Sensors, Signal to noise ratio, Quantization, Statistical analysis, Detection and tracking algorithms, Scattering

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Proceedings Article | 12 May 2016 Paper

Multi-class open set recognition for SAR imagery

Matthew Scherreik, Brian Rigling

Proceedings Volume 9844, 98440M (2016) https://doi.org/10.1117/12.2224384

KEYWORDS: Detection and tracking algorithms, Synthetic aperture radar, Target recognition, Calibration, LIDAR, Infrared imaging, Automatic target recognition, Binary data, Data modeling, Picosecond phenomena

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Proceedings Article | 22 May 2015 Paper

Performance of peaky template matching under additive white Gaussian noise and uniform quantization

Matthew Horvath, Brian Rigling

Proceedings Volume 9476, 94760L (2015) https://doi.org/10.1117/12.2176220

KEYWORDS: Quantization, Detection and tracking algorithms, Statistical analysis, Automatic target recognition, Synthetic aperture radar, Algorithm development, Image processing, Forward looking infrared, Monte Carlo methods, Bismuth

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Proceedings Article | 22 May 2015 Paper

An evaluation of open set recognition for FLIR images

Matthew Scherreik, Brian Rigling

Proceedings Volume 9476, 94760N (2015) https://doi.org/10.1117/12.2176585

KEYWORDS: Detection and tracking algorithms, Forward looking infrared, Machine learning, Data modeling, Automatic target recognition, Neodymium, Remote sensing, Calibration, Error analysis, Binary data

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Proceedings Article | 19 May 2015 Paper

Improving change detection results with knowledge of registration uncertainty

Andrew Lingg, Brian Rigling

Proceedings Volume 9460, 94600H (2015) https://doi.org/10.1117/12.2176438

KEYWORDS: Image registration, Error analysis, Statistical analysis, Monte Carlo methods, Digital filtering, Convolution, Dysprosium, Image filtering, Data modeling, Spatial resolution

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Proceedings Article | 13 May 2015 Paper

Multinomial pattern matching revisited

Matthew Horvath, Brian Rigling

Proceedings Volume 9475, 94750H (2015) https://doi.org/10.1117/12.2176229

KEYWORDS: Quantization, Detection and tracking algorithms, Algorithm development, Statistical analysis, Automatic target recognition, Synthetic aperture radar, Data modeling, Radar, Sensors, Bismuth

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Proceedings Article | 13 May 2015 Paper

Asymptotic modeling of synthetic aperture ladar sensor phenomenology

Robert Neuroth, Brian Rigling, Edmund Zelnio, Edward Watson, Vincent Velten, Todd Rovito

Proceedings Volume 9475, 94750D (2015) https://doi.org/10.1117/12.2178268

KEYWORDS: Synthetic aperture radar, Electro optical modeling, LIDAR, Image resolution, Sensors, Scattering, Automatic target recognition, Computer simulations, Geometrical optics, Image processing

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Proceedings Article | 13 June 2014 Paper

Ladar ATR via probabilistic open set techniques

Matthew Scherreik, Brian Rigling

Proceedings Volume 9090, 90900A (2014) https://doi.org/10.1117/12.2048906

KEYWORDS: Detection and tracking algorithms, LIDAR, Automatic target recognition, Target recognition, Algorithm development, Binary data, Phase modulation, Remote sensing, Analytical research, Data modeling

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Proceedings Article | 13 June 2014 Paper

Recent improvements to the Raider Tracer scattering prediction tool

Brian Rigling, Austin Mackey, Edward Friel, John Nehrbass, Edmund Zelnio

Proceedings Volume 9093, 90930J (2014) https://doi.org/10.1117/12.2058769

KEYWORDS: Visualization, Visual process modeling, Scattering, Receivers, Optical spheres, Electromagnetic scattering, Radar, Algorithm development, MATLAB, Ray tracing

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Proceedings Article | 3 June 2013 Paper

SAR based classification of ground moving targets to assist vehicle tracking

G. Goley, Brian Rigling, Adam Nolan

Proceedings Volume 8746, 87460H (2013) https://doi.org/10.1117/12.2018186

KEYWORDS: Synthetic aperture radar, Distortion, Sensors, Detection and tracking algorithms, Radar, Error analysis, Target recognition, Image quality, Radar imaging, Motion estimation

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Proceedings Article | 16 May 2013 Paper

Foreground estimation in motion imagery using multi-frame change detection techniques

Andrew Lingg, Brian Rigling

Proceedings Volume 8740, 87400G (2013) https://doi.org/10.1117/12.2015931

KEYWORDS: Cameras, Detection and tracking algorithms, Motion estimation, Video, Image registration, Chemical elements, Image analysis, Statistical analysis, Visualization, Associative arrays

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Proceedings Article | 14 May 2012 Paper

Dual format algorithm implementation with gotcha data

LeRoy Gorham, Brian Rigling

Proceedings Volume 8394, 839403 (2012) https://doi.org/10.1117/12.925065

KEYWORDS: Synthetic aperture radar, Distortion, Image filtering, Sensors, Image analysis, Fourier transforms, Image acquisition, Image resolution, X band, Antennas

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Proceedings Article | 3 May 2012 Paper

Flying blind: a challenge problem for SAR imaging without navigational data

Brian Rigling

Proceedings Volume 8394, 839409 (2012) https://doi.org/10.1117/12.923439

KEYWORDS: Synthetic aperture radar, Image processing, Unmanned aerial vehicles, Error analysis, Image resolution, Imaging systems, Motion estimation, Algorithm development, Computer simulations, Navigation systems

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Proceedings Article | 3 May 2012 Paper

Approximation and bounding of distortion errors in polar format SAR imaging for squinted geometries

Matt Horvath, Brian Rigling

Proceedings Volume 8394, 839402 (2012) https://doi.org/10.1117/12.918409

KEYWORDS: Distortion, Synthetic aperture radar, Image processing, Wavefronts, Antennas, Surveillance, Image resolution, Analytical research, Signal processing, Image transmission

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Synthetic aperture radar (SAR) imaging is a powerful tool that can be utilized where other conventional surveillance methods fail. It has a variety of applications including reconnaissance and surveillance for defense purposes, natural resource exploration, and environmental monitoring, among others. SAR systems generally create large datasets that need to be processed to form a final image. Processing this data can be computationally intensive, and applications may demand algorithms that can form images quickly. The goal and motivation of this research is to analyze algorithms that permit a large SAR dataset to be efficiently processed into a high-resolution image of a large scene. The backprojection algorithm (BPA)1 can serve as a baseline for performance relative to other SAR imaging algorithms. It results in accurately formed images for a vast variety of imaging scenarios. The tradeoff comes in its computational complexity which is O(N³) for an N × N pixel image. The polar format algorithm (PFA⁾² is a long-standing and popular alternative to the BPA. The PFA allows the use of fast Fourier Transforms (FFTs), leading to a computational complexity of O(N2 logN) for an N × N pixel image. However, the PFA relies on a far-field approximation, wherein the curved wavefront of the transmitted pulses is approximated as a planar wavefront, thereby introducing spatially variant phase errors and hence distortion and defocus in the PFA formed image. The defocus and distortion errors can be corrected, but this is a non-trivial process.3 It can be shown that first-order Taylor expansion of a differential range expression yields the assumed received signal phase used to generate images from SAR phase history data with the PFA.4 This work focuses on error terms introduced by the PFA assumption that introduce geometric distortion in the resulting image. This distortion causes a point scatterer located at a true (x, y) coordinate to appear at some (x, y) in the formed image, i.e, unwanted translation of point target locations is introduced. Complicating matters, the distortion is a function of a pixel's coordinates in the scene, thus making the distortion spatially-variant such that each pixel will be distorted differently. This is often referred to as an image warping. Previously, it has been assumed that the second-order Taylor series of the differential range defines the dominant error,2, 4, 5 due to the factorial decay of the Taylor series. This assumption is tested here by performing a Taylor expansion on a differential range error expression. Instead of assuming the second-order differential range expansion term to be the sole source of error, the true error term is used to approximate the distortion. The results of this comparison are presented. The differential range error approach will be referred to as the DRE approach and the dominant polynomial approach as the DPE. Additionally, with an accurate distortion approximation, it has been shown that the distortion can be removed in post-processing.3 With this in mind, bounds on scene size are derived limiting the visible distortion to within an arbitary number of resolution cells, both before and after the second-order distortion correction. These bounds are also verified in simulation. The paper is outlined as follows. In Section 2, we will first introduce the differential range term and demonstrate its relationship to the PFA imaging kernel and the source of the phase error terms. Next in Section 3, the distortion functions will be derived from these error terms using both the DRE and DPE approaches before and after applying the second-corrections. Then in Section 4, these results will be bounded such that the worst-case distortion at a specific pixel in the scene is within an arbitrary number of resolution cells, giving an approximated distortion-free scene size. Finally in Section 5, the results and comparison of the approaches will be presented.

Proceedings Article | 5 May 2011 Paper

A comparison of SAR imaging algorithms for high-squint angle trajectories

Matthew Horvath, Brian Rigling

Proceedings Volume 8051, 805103 (2011) https://doi.org/10.1117/12.884879

KEYWORDS: Synthetic aperture radar, Image processing, Antennas, Image acquisition, Distortion, Image resolution, Surveillance, Wavefronts, Sensors, Radar

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Proceedings Article | 21 April 2010 Paper

Dual format algorithm for monostatic SAR

LeRoy Gorham, Brian Rigling

Proceedings Volume 7699, 769905 (2010) https://doi.org/10.1117/12.855374

KEYWORDS: Synthetic aperture radar, Detection and tracking algorithms, Distortion, Image filtering, Sensors, Image acquisition, Computer simulations, Radar, Antennas, Radar imaging

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Proceedings Article | 19 April 2010 Paper

Analysis of focused dismount signatures

Thomas Lewis, Brian Rigling

Proceedings Volume 7699, 76990M (2010) https://doi.org/10.1117/12.862609

KEYWORDS: Doppler effect, Radar, Data modeling, Scattering, Motion models, Analytical research, Algorithm development, Light scattering, Motion estimation, Statistical modeling

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Proceedings Article | 17 September 2009 Paper

Millimeter-wave radar systems for biometric applications

Douglas Petkie, Erik Bryan, Carla Benton, Brian Rigling

Proceedings Volume 7485, 748502 (2009) https://doi.org/10.1117/12.830543

KEYWORDS: Radar, Heart, Chest, Electrocardiography, Motion measurement, Interference (communication), Biometrics, Oscillators, Heterodyning, Receivers

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Proceedings Article | 1 May 2009 Paper

An algorithm for the detection of handguns in terahertz images

Andrew Lingg, Brian Rigling

Proceedings Volume 7311, 73110J (2009) https://doi.org/10.1117/12.817281

KEYWORDS: Image segmentation, Firearms, Detection and tracking algorithms, Image processing algorithms and systems, Imaging systems, Binary data, Image filtering, Shape analysis, Weapons, Image resolution

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Proceedings Article | 29 April 2009 Paper

Analysis of target rotation and translation in SAR imagery

Ahmed Fasih, Brian Rigling, Randolph Moses

Proceedings Volume 7337, 73370F (2009) https://doi.org/10.1117/12.819188

KEYWORDS: Synthetic aperture radar, Radar, Motion analysis, Image filtering, Image quality, Detection and tracking algorithms, Image processing, Doppler effect, Image analysis, Motion models

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Proceedings Article | 24 March 2008 Paper

Multisensor 3D tracking for counter small unmanned air vehicles (CSUAV)

Juan Vasquez, Kyle Tarplee, Ellen Case, Anne Zelnio, Brian Rigling

Proceedings Volume 6971, 697107 (2008) https://doi.org/10.1117/12.785531

KEYWORDS: Sensors, Cameras, Radar, Acoustics, Video, Target detection, Unmanned aerial vehicles, Mid-IR, Video processing, Human-machine interfaces

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Proceedings Article | 7 May 2007 Paper

A comparison between imaging radar and medical imaging polar format algorithm implementations

LeRoy Gorham, Brian Rigling, Edmund Zelnio

Proceedings Volume 6568, 65680K (2007) https://doi.org/10.1117/12.731454

KEYWORDS: Synthetic aperture radar, Medical imaging, Computed tomography, Radar, Fourier transforms, Reconstruction algorithms, Image acquisition, Image quality, Tomography, Image resolution

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Proceedings Article | 7 May 2007 Paper

Raider tracer: a MATLAB-based electromagnetic scattering simulator

Brian Rigling

Proceedings Volume 6568, 65680E (2007) https://doi.org/10.1117/12.724779

KEYWORDS: Electromagnetic scattering, Scattering, Synthetic aperture radar, Diffraction, Ray tracing, MATLAB, Computer simulations, Electrical engineering, Radar, Electromagnetic scattering theory

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Proceedings Article | 7 May 2007 Paper

A comparison of nonquadratic regularization implementations on the backhoe data set

Andrew Kondrath, Brian Rigling

Proceedings Volume 6568, 65680A (2007) https://doi.org/10.1117/12.721015

KEYWORDS: Stochastic processes, Synthetic aperture radar, Image quality, Image enhancement, Image processing, Image acquisition, Radar, Data modeling, Electronic filtering, Optimization (mathematics)

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Proceedings Article | 17 May 2006 Paper

Multistage entropy minimization for SAR image autofocus

Brian Rigling

Proceedings Volume 6237, 62370J (2006) https://doi.org/10.1117/12.669957

KEYWORDS: Microelectromechanical systems, Signal to noise ratio, Synthetic aperture radar, Image processing, Monte Carlo methods, Detection and tracking algorithms, Error analysis, Algorithm development, Scattering, Optimization (mathematics)

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Proceedings Article | 17 May 2006 Paper

System analysis of a short-range SAR repeater

Tony Montes de Oca, Brian Rigling

Proceedings Volume 6237, 62370C (2006) https://doi.org/10.1117/12.665551

KEYWORDS: Synthetic aperture radar, Systems modeling, Doppler effect, Sensors, Radar, Antennas, Surveillance, Reflectivity, Receivers, Backscatter

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Proceedings Article | 26 January 2006 Paper

Virtual confocal microscopy

Philip Hanna, Brian Rigling, Edmund Zelnio

Proceedings Volume 6056, 605607 (2006) https://doi.org/10.1117/12.650778

KEYWORDS: 3D acquisition, Confocal microscopy, Sensors, 3D image processing, Edge detection, Detection and tracking algorithms, Target detection, Clouds, Electro optics, Reconstruction algorithms

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Proceedings Article | 19 May 2005 Paper

Adaptive noise radar for simultaneous bistatic SAR and GMTI

Brian Rigling

Proceedings Volume 5808, (2005) https://doi.org/10.1117/12.610995

KEYWORDS: Doppler effect, Synthetic aperture radar, Radar, Detection and tracking algorithms, Image processing, Receivers, Transmitters, Interference (communication), Signal to noise ratio, Signal processing

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Proceedings Article | 2 September 2004 Paper

GTD-based scattering models for bistatic SAR

Brian Rigling, Randolph Moses

Proceedings Volume 5427, (2004) https://doi.org/10.1117/12.541555

KEYWORDS: Scattering, Receivers, Transmitters, 3D modeling, Synthetic aperture radar, Reflectors, Optical spheres, Reflection, Electromagnetic scattering, Automatic target recognition

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Proceedings Article | 2 September 2004 Paper

Adaptive filtering for air-to-ground surveillance

Brian Rigling

Proceedings Volume 5427, (2004) https://doi.org/10.1117/12.539875

KEYWORDS: Radar, Receivers, Synthetic aperture radar, Signal processing, Electronic filtering, Digital filtering, Transmitters, Doppler effect, Surveillance, Wireless communications

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Proceedings Article | 12 September 2003 Paper

Three-dimensional surface reconstruction from multistatic SAR images

Brian Rigling, Randolph Moses

Proceedings Volume 5095, (2003) https://doi.org/10.1117/12.486998

KEYWORDS: Synthetic aperture radar, Receivers, Transmitters, Image processing, 3D image processing, Interferometry, 3D image reconstruction, Reconstruction algorithms, Antennas, Bismuth

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Proceedings Article | 24 August 2000 Paper

Relative information in phase of radar range profiles

Brian Rigling, Lee Potter, Randolph Moses

Proceedings Volume 4053, (2000) https://doi.org/10.1117/12.396332

KEYWORDS: Error analysis, Radar, Scattering, Signal to noise ratio, Synthetic aperture radar, Image resolution, Electromagnetic scattering, X band, Monte Carlo methods, Image analysis

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Showing 5 of 39 publications

Conference Committee Involvement (19)

Algorithms for Synthetic Aperture Radar Imagery XXXI

23 April 2024 | National Harbor, Maryland, United States

Algorithms for Synthetic Aperture Radar Imagery XXX

2 May 2023 | Orlando, Florida, United States

Algorithms for Synthetic Aperture Radar Imagery XXIX

6 April 2022 | Orlando, Florida, United States

Algorithms for Synthetic Aperture Radar Imagery XXVIII

12 April 2021 | Online Only, Florida, United States

Algorithms for Synthetic Aperture Radar Imagery XXVII

27 April 2020 | Online Only, California, United States

Algorithms for Synthetic Aperture Radar Imagery XXVI

18 April 2019 | Baltimore, MD, United States

Algorithms for Synthetic Aperture Radar Imagery XXV

19 April 2018 | Orlando, FL, United States

Algorithms for Synthetic Aperture Radar Imagery XXIV

13 April 2017 | Anaheim, CA, United States

Algorithms for Synthetic Aperture Radar Imagery XXIII

21 April 2016 | Baltimore, MD, United States

Algorithms for Synthetic Aperture Radar Imagery XXII

23 April 2015 | Baltimore, MD, United States

Algorithms for Synthetic Aperture Radar Imagery XXI

7 May 2014 | Baltimore, MD, United States

Algorithms for Synthetic Aperture Radar Imagery XX

1 May 2013 | Baltimore, Maryland, United States

Algorithms for Synthetic Aperture Radar Imagery XIX

25 April 2012 | Baltimore, Maryland, United States

Algorithms for Synthetic Aperture Radar Imagery XVIII

27 April 2011 | Orlando, Florida, United States

Algorithms for Synthetic Aperture Radar Imagery XVII

8 April 2010 | Orlando, Florida, United States

Algorithms for Synthetic Aperture Radar Imagery XVI

16 April 2009 | Orlando, Florida, United States

Algorithms for Synthetic Aperture Radar Imagery XV

17 March 2008 | Orlando, Florida, United States

Algorithms for Synthetic Aperture Radar Imagery XIV

10 April 2007 | Orlando, Florida, United States

Algorithms for Synthetic Aperture Radar Imagery XIII

17 April 2006 | Orlando (Kissimmee), Florida, United States

Showing 5 of 19 Conference Committees

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