Mr. Richard R. Leach Profile

Richard R. Leach

Member of Techn Staff Retired

SPIE Involvement:

Conference Program Committee | Author

Area of Expertise:

Customized Digital Optical Software Algorithms , Image Analysis and Computer Vision , Adaptive processing and Machine Learning , Performant Processing , Scientific Technical Writing , Ultrawideband Technology

Publications (21)

Proceedings Article | 14 March 2023 Presentation + Paper

Presentation + Paper

Beam-line parameter image processing optimization and maintenance for beam alignment in the National Ignition Facility

Abdul A. Awwal, Richard Leach, Roger Lowe-Webb, Vicki Miller Kamm

Proceedings Volume 12401, 1240107 (2023) https://doi.org/10.1117/12.2657715

KEYWORDS: National Ignition Facility, Image processing, Second harmonic generation, Automatic alignment, Detection and tracking algorithms, Reflection, Optical alignment

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Proceedings Article | 7 September 2018 Paper

Paper

Image processing strategies and multiple paths toward solutions

Abdul A. Awwal, Richard Leach

Proceedings Volume 10751, 107510R (2018) https://doi.org/10.1117/12.2321958

KEYWORDS: Image processing, National Ignition Facility, Edge detection, Image analysis, Cameras, Image segmentation, Detection and tracking algorithms, Image filtering, Hough transforms, Digital image correlation

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Proceedings Article | 14 September 2016 Presentation + Paper

Presentation + Paper

Image processing for the Advanced Radiographic Capability (ARC) at the National Ignition Facility

Richard Leach, Abdul A. Awwal, Roger Lowe-Webb, Victoria Miller-Kamm, Charles Orth, Randy Roberts, Karl Wilhelmsen

Proceedings Volume 9970, 99700M (2016) https://doi.org/10.1117/12.2239434

KEYWORDS: National Ignition Facility, Image processing, Image sensors, Image analysis, Detection and tracking algorithms, Image segmentation, Diagnostics, Laser processing, Mirrors, Reticles

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Proceedings Article | 9 September 2015 Paper

Paper

Alignment mask design and image processing for the Advanced Radiographic Capability (ARC) at the National Ignition Facility

Richard Leach, Abdul Awwal, Simon Cohen, Roger Lowe-Webb, Randy Roberts, Thad Salmon, David Smauley, Karl Wilhelmsen

Proceedings Volume 9598, 959819 (2015) https://doi.org/10.1117/12.2189563

KEYWORDS: National Ignition Facility, Image processing, Reticles, Image segmentation, Signal processing, Photomasks, Evolutionary algorithms, X-rays, Image compression, Image processing algorithms and systems

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Proceedings Article | 9 September 2015 Paper

Paper

Detecting fiducials affected by trombone delay in ARC and the main laser alignment at the National Ignition Facility

Abdul A. Awwal, Erlan Bliss, Victoria Miller Kamm, Richard Leach, Randy Roberts, Michael Rushford, Roger Lowe-Webb, Karl Wilhelmsen

Proceedings Volume 9598, 959812 (2015) https://doi.org/10.1117/12.2190065

KEYWORDS: National Ignition Facility, Distortion, X-rays, Image processing, X-ray imaging, Optical alignment, Fusion energy, Diagnostics, Free space optics, Sensors

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Proceedings Article | 9 September 2015 Paper

Paper

Automated alignment of the Advanced Radiographic Capability (ARC) target area at the National Ignition Facility

Randy Roberts, Abdul A. Awwal, Erlan Bliss, John Heebner, Richard Leach, Charles Orth, Michael Rushford, Roger Lowe-Webb, Karl Wilhelmsen

Proceedings Volume 9598, 959814 (2015) https://doi.org/10.1117/12.2190252

KEYWORDS: National Ignition Facility, Mirrors, Diagnostics, Cameras, Image processing, X-rays, CCD cameras, Charge-coupled devices, Optical alignment, Tolerancing

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Proceedings Article | 26 February 2015 Paper

Paper

Near field intensity trends of main laser alignment images in the National Ignition Facility (NIF)

Richard Leach, Ilona Beltsar, Scott Burkhart, Roger Lowe-Webb, Victoria Miller-Kamm, Thad Salmon, Karl Wilhelmsen

Proceedings Volume 9345, 93450D (2015) https://doi.org/10.1117/12.2084006

KEYWORDS: National Ignition Facility, Cameras, Sensors, Databases, Optical alignment, Near field, Optical amplifiers, Near field optics, Diagnostics, Attenuators

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Proceedings Article | 26 February 2015 Paper

Paper

Centroid stabilization in alignment of FOA corner cube: designing of a matched filter

Abdul Awwal, Karl Wilhelmsen, Randy Roberts, Richard Leach, Victoria Miller Kamm, Tony Ngo, Roger Lowe-Webb

Proceedings Volume 9345, 93450L (2015) https://doi.org/10.1117/12.2083537

KEYWORDS: Composites, Image filtering, Phase only filters, National Ignition Facility, Electronic filtering, Optical amplifiers, Optical filters, Crystals, Laser crystals, Frequency conversion

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Proceedings Article | 14 October 2014 Paper

Paper

Analysis of the confluence of three patterns using the Centering and Pointing System (CAPS) images for the Advanced Radiographic Capability (ARC) at the National Ignition Facility

Richard Leach, Abdul Awwal, Erlan Bliss, Randy Roberts, Michael Rushford, Karl Wilhelmsen, Thomas Zobrist

Proceedings Volume 9216, 92161Q (2014) https://doi.org/10.1117/12.2064664

KEYWORDS: National Ignition Facility, Image processing, Image segmentation, Image analysis, Image fusion, Signal processing, Algorithm development, Cameras, Diagnostics, Near field optics

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Proceedings Article | 19 September 2014 Paper

Paper

Image analysis algorithms for the advanced radiographic capability (ARC) grating tilt sensor at the National Ignition Facility

Randy Roberts, Erlan Bliss, Michael Rushford, John Halpin, Abdul Awwal, Richard Leach

Proceedings Volume 9216, 92160B (2014) https://doi.org/10.1117/12.2062679

KEYWORDS: National Ignition Facility, Binary data, Sensors, Cameras, Image analysis, Reticles, Mirrors, Algorithm development, Image sensors, Beam analyzers

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Proceedings Article | 19 September 2014 Paper

Paper

Detecting objects with partial obstruction at the ARC split beam injector images at the National Ignition Facility

Abdul Awwal, Richard Leach, Randy Roberts, Karl Wilhelmsen, David McGuigan, Jeff Jarboe

Proceedings Volume 9216, 92160E (2014) https://doi.org/10.1117/12.2062678

KEYWORDS: Image processing, National Ignition Facility, Beam splitters, Image segmentation, Electronic filtering, Optical alignment, Image filtering, Control systems, X-rays, Diagnostics

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Proceedings Article | 26 September 2013 Paper

Paper

Monte Carlo simulation of neutron noise effects on beam position determination at the National Ignition Facility

Abdul A. Awwal, Richard Leach, Philip Datte, Anastacia Manuel

Proceedings Volume 8855, 88550L (2013) https://doi.org/10.1117/12.2026455

KEYWORDS: Cameras, National Ignition Facility, Monte Carlo methods, Photomasks, Radiation effects, Sensors, Detection and tracking algorithms, Image processing, Image fusion, Image filtering

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Proceedings Article | 20 February 2013 Paper

Paper

Image processing methods for characterizing cryogenic target quality during ice layer formation at the National Ignition Facility (NIF)

Richard Leach, John Field, Laura Mascio-Kegelmeyer, Bernie Kozioziemski, Tanza Lee, Evan Mapoles, Randy Roberts, Rebecca Dylla-Spears, Tayyab Suratwala

Proceedings Volume 8602, 86020H (2013) https://doi.org/10.1117/12.2009413

KEYWORDS: Image segmentation, National Ignition Facility, Image quality, Image processing, Cryogenics, X-rays, Image registration, Solids, X-ray imaging, Crystals

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Proceedings Article | 20 February 2013 Paper

Paper

The National Ignition Facility: beam area increase

S. Burkhart, A. Awwal, M. Borden, T. Budge, J. Campbell, S. Dixit, M. Henesian , K. Jancaitis, D. Jedlovec, R. Leach, R. Lowe-Webb, B. MacGowan, S. Pratuch, J. Palma, T. Salmon, D. Smauley, L. Smith, S. Sommer, P. Wegner, K. Wilhelmsen, M. Witte, N. Wong

Proceedings Volume 8602, 860203 (2013) https://doi.org/10.1117/12.2009402

KEYWORDS: National Ignition Facility, Relays, Optical amplifiers, Telescopes, Image processing, Fusion energy, Data acquisition, Mirrors, Laser energy, Spatial filters

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Proceedings Article | 19 February 2011 Paper

Paper

Image processing and control of a programmable spatial light modulator

Abdul A. Awwal, Richard Leach, Gordon Brunton, Eddy Tse, JoAnn Matone, John Heebner

Proceedings Volume 7916, 79160Q (2011) https://doi.org/10.1117/12.876399

KEYWORDS: Calibration, Image processing, Liquid crystal on silicon, Control systems, National Ignition Facility, Spatial light modulators, Detection and tracking algorithms, Apodization, Process control, Optical components

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Proceedings Article | 19 February 2011 Paper

Paper

Hohlraum target alignment from x-ray detector images using starburst design patterns

Richard Leach, Alan Conder, Oliver Edwards, Jeremy Kroll, Bernard Kozioziemski, Evan Mapoles, Dave McGuigan, Karl Wilhelmsen

Proceedings Volume 7916, 791616 (2011) https://doi.org/10.1117/12.878790

KEYWORDS: X-rays, X-ray imaging, National Ignition Facility, Image processing, Cryogenics, X-ray detectors, X-ray sources, Target detection, Spherical lenses, Cameras

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Proceedings Article | 19 February 2011 Paper

Paper

Recent advances in automatic alignment system for the National Ignition Facility

Karl Wilhelmsen, Abdul A. Awwal, Dan Kalantar, Richard Leach, Roger Lowe-Webb, David McGuigan, Vicki Miller Kamm

Proceedings Volume 7916, 79160O (2011) https://doi.org/10.1117/12.878496

KEYWORDS: National Ignition Facility, Automatic alignment, Cameras, X-ray sources, X-ray imaging, X-rays, Control systems, Image processing, Tolerancing, Computing systems

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Proceedings Article | 3 September 2008 Paper

Paper

Higher accuracy template for corner cube reflected image

Abdul Awwal, Kenneth Rice, Richard Leach, Tarek Taha

Proceedings Volume 7072, 70720V (2008) https://doi.org/10.1117/12.798704

KEYWORDS: Field programmable gate arrays, Image processing, Image filtering, Image quality, National Ignition Facility, Electronic filtering, MATLAB, Phase only filters, Image enhancement, Video

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Proceedings Article | 11 April 2002 Paper

Paper

Comparison of ultrasound tomography methods in circular geometry

Richard Leach, Steve Azevedo, James Berryman, Hugo Bertete-Aguirre, David Chambers, Jeffrey Mast, Peter Littrup, Nebojsa Duric, Steven Johnson, Frank Wuebbeling

Proceedings Volume 4687, (2002) https://doi.org/10.1117/12.462173

KEYWORDS: Tissues, Reconstruction algorithms, Ultrasonography, Breast, Tomography, CT reconstruction, Image resolution, Transducers, Algorithm development, Image quality

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Proceedings Article | 11 April 2002 Paper

Paper

Characterizing tissue with acoustic parameters derived from ultrasound data

Peter Littrup, Nebojsa Duric, Richard Leach, Steve Azevedo, James Candy, Thomas Moore, David Chambers, Jeffrey Mast, Earle Holsapple

Proceedings Volume 4687, (2002) https://doi.org/10.1117/12.462172

KEYWORDS: Tissues, Breast, Ultrasonography, Signal attenuation, Acoustics, Reflectivity, Scattering, Reconstruction algorithms, Scanners, Algorithm development

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Proceedings Article | 11 April 2002 Paper

Paper

Using data fusion to characterize breast tissue

Nebojsa Duric, Peter Littrup, Richard Leach, Steve Azevedo, James Candy, Thomas Moore, David Chambers, Jeffrey Mast, Earle Holsapple

Proceedings Volume 4687, (2002) https://doi.org/10.1117/12.462167

KEYWORDS: Tissues, Breast, X-rays, Ultrasonography, Reflectivity, X-ray imaging, Absorption, Data fusion, X-ray computed tomography, Image fusion

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Showing 5 of 21 publications

Conference Committee Involvement (14)

Optics and Photonics for Information Processing XVIII

21 August 2024 | San Diego, California, United States

Optics and Photonics for Information Processing XVII

23 August 2023 | San Diego, California, United States

High Power Lasers for Fusion Research VII

1 February 2023 | San Francisco, California, United States

Optics and Photonics for Information Processing XVI

24 August 2022 | San Diego, California, United States

Optics and Photonics for Information Processing XV

4 August 2021 | San Diego, California, United States

Showing 5 of 14 Conference Committees

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