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You searched on: Author: David Allen

Displaying records 1 to 10 of 69 records.
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1. National Institute of Standards and Technology measurement service of the optical properties of biomedical phantoms: Current status
Published: 3/24/2016
Authors: Paul Lemaillet, Catherine C Cooksey, Zachary H Levine, Adam L Pintar, Jeeseong Hwang, David W Allen
Abstract: The National Institute for Standards and Technology (NIST) has maintained scales of reflectance and transmittance over several decades. Those scales are primarily intended for the regular transmittance, mirrors, and solid surface scattering diffusers ...

2. Double-integrating-sphere system at the National Institute of Standards and Technology in support of measurement standards for the determination of optical properties of tissue-mimicking phantoms
Published: 10/27/2015
Authors: Paul Lemaillet, Jeeseong Hwang, David W Allen
Abstract: There is a need for a common reference point that will allow for the comparison of the optical properties of tissue mimicking phantoms. This paper provides a brief review of the methods that have been used to measure tissue mimicking phantoms. T ...

3. Digital Phantoms Generated by Spectral and Spatial Light Modulators
Published: 10/21/2015
Authors: Bonghwan B. Chon, Fuyuki Tokumasu, Ji Y. Lee, David W Allen, Joseph Paul Rice, Jeeseong Hwang
Abstract: A hyperspectral image projector (HIP) based on liquid crystal on silicon (LCoS) spatial light modulators (SLMs) is explained and demonstrated to generate 3D spectral data cubes. The HIP- constructed data cubes are 3D images of the spatial distribu ...

4. Characterizing intimate mixtures of materials in hyperspectral imagery with albedo-based and kernel-based approaches
Published: 9/1/2015
Authors: Robert S Rand, David W Allen, Ronald Resmini
Abstract: Linear mixtures of materials in a scene often occur because the pixel size of a sensor is relatively large and consequently they contain patches of different materials within them. This type of mixing can be thought of as areal mixing and modeled by ...

5. Development of traceable measurement of the diffuse optical properties of solid reference standards for biomedical optics at the National Institute of Standards and Technology
Published: 7/1/2015
Authors: David W Allen, Paul Lemaillet, Jean-Pierre Bouchard
Abstract: The development of a national reference instrument dedicated to the measurement of the scattering and absorption properties of solid tissue-mimicking phantoms used as reference standards is presented. The optical properties of the phantoms are measu ...

6. Spectral reflectance variability of skin and attributing factors
Published: 5/21/2015
Authors: Catherine C Cooksey, Benjamin K Tsai, David W Allen
Abstract: Knowledge of the spectral reflectance signature of human skin over a wide spectral range will help advance the development of sensing systems for many applications, ranging from medical treatment to security technology. A critical component of the s ...

7. 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 ...

8. 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 ...

9. Making digital phantoms with spectral and spatial light modulators for quantitative applications of hyperspectral optical medical imaging devices
Published: 3/6/2015
Authors: Bonghwan B. Chon, fuyuki Tokumasu, Ji Youn Lee, David W Allen, Joseph Paul Rice, Jeeseong Hwang
Abstract: We present a procedure to generate digital phantoms with a hyperspectral image projector (HIP) consisting of two liquid crystal on silicon (LCoS) spatial light modulators (SLMs). The digital phantoms are 3D image data cubes of the spatial distri ...

10. Measurement of the optical properties of solid biomedical phantoms at the National Institute of Standards and Technology
Published: 3/6/2015
Authors: Paul Lemaillet, David W Allen, Jeeseong Hwang
Abstract: Solid phantoms that serve as a proxy for human tissue and provide a convenient test subject for optical medical imaging devices. In order to determine quantitative performance of a given system, the absolute optical properties of the subject mus ...

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  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
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