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You searched on: Author: David Allen

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1. Numerical, benchtop, and in vivo phantoms for hyperspectral imaging of ischemic wounds
Published: 5/14/2015
Authors: David W Allen, Jeeseong Hwang, Maritoni Abatayo Litorja, Joseph Paul Rice
Abstract: Biomedical optical imaging has the potential to achieve high spatial resolution and high functional sensitivity for non-invasive assessment of ischemic wounds. However, clinical acceptance of many optical imaging devices is hampered by poor repro ...

2. Bidirectional reflectance scale comparison between NIST and PTB
Published: 5/1/2015
Authors: Catherine C Cooksey, Maria E Nadal, David W Allen, Kai-Olaf Hauer, Andreas Hoepe
Abstract: A comparison of bidirectional reflectance scales between the National Institute of Standards and Technology (NIST) and the Physikalisch-Technische Bundesanstalt (PTB) has been performed. Measurements of two sets of white diffuse reflectance standard ...

3. Establishment and application of the 0/45 reflectance factor scale over the shortwave infrared
Published: 4/1/2015
Authors: Catherine C Cooksey, David W Allen, Benjamin K Tsai, Howard W Yoon
Abstract: This paper describes the establishment and application of the 0/45 reflectance factor scale in the shortwave infrared (SWIR) from 1100 nm to 2500 nm. Design, characterization, and the demonstration of a 4-stage, extended indium-gallium-arsenide radi ...

4. A collection and statistical analysis of skin reflectance signatures for inherent variability over the 250 nm to 2500 nm spectral range
Published: 6/4/2014
Authors: Catherine C Cooksey, Benjamin K Tsai, David W Allen
Abstract: The spectral reflectance signature of human skin provides opportunities to advance observations ranging from medical treatment to security applications. In this study 28 volunteers participated in a skin reflectance measurement of the inside of the r ...

5. Reflectance measurements of human skin from the ultraviolet to the shortwave infrared (250 nm to 2500 nm)
Published: 5/29/2013
Authors: Catherine C Cooksey, David W Allen
Abstract: While published literature of the optical properties of human skin is prevalent for the visible region, data are sparse in the ultra violet and shortwave infrared. Spectral imaging has expanded from primarily an earth remote sensing tool to a range ...

6. The evaluation of hyperspectral imaging for the detection of person-borne threat objects over the 400 nm to 1700 nm spectral region
Published: 5/10/2012
Authors: Catherine C Cooksey, Jorge Enrique Neira, David W Allen
Abstract: The detection of person-borne threat objects, such as improvised explosive devices, at a safe distance is an ongoing challenge. While much attention has been given to other parts of the electromagnetic spectrum, very little is known about what potent ...

7. Hyperspectral Image Projector Applications
Published: 2/15/2012
Authors: Joseph Paul Rice, Steven W Brown, David W Allen, Howard W Yoon, Maritoni Abatayo Litorja, Jeeseong Hwang
Abstract: For the past several years NIST has been developing, along with several collaborators, a Hyperspectral Image Projector (HIP). This scene projector produces high-resolution programmable spectra and projects them into dynamic two-dimensional images ...

8. Investigation of the potential use of hyperspectral imaging for stand-off detection of person-borne IEDs
Published: 5/23/2011
Authors: Catherine C Cooksey, David W Allen
Abstract: Advances in hyperspectral sensors and algorithms in numerous fields of research have opened up new possibilities for its use in the detection of person-borne IEDs. While portions of the electromagnetic spectrum, such as the x-ray and terahertz regio ...

9. NIST Measurement Services: Regular Spectral Transmittance
Series: Special Publication (NIST SP)
Report Number: 250-69
Published: 3/10/2011
Authors: David W Allen, Edward A. Early, Benjamin K Tsai, Catherine C Cooksey
Abstract: This document describes measurement services, instrumentation, and measurement techniques for regular spectral transmittance over the spectral range from 250 nm to 2500 nm at the National Institute of Standards and Technology. Section 2 explains the ...

10. The Extension of the NIST BRDF Scale from 1100 nm to 2500 nm
Published: 8/21/2009
Authors: Howard W Yoon, David W Allen, George P Eppeldauer, Benjamin K Tsai
Abstract: Measurements of bi-directional reflectance factor for diffuse reflectance from 1100 nm to 2500 nm using extended-range indium gallium arsenide (exInGaAs) detectors in the NIST Spectral Tri-function Automated Reference Reflectometer (STARR) facility ...

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  • SP 250-XX: Calibration Services
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