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You searched on: Author: david allen

Displaying records 11 to 20 of 67 records.
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11. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913891

12. A microscene approach to the evaluation of hyperspectral system level performance
Published: 5/18/2013
Authors: David W Allen, Ronald Resmini, Christopher Deloye
Abstract: Assessing the ability of a hyperspectral imaging (HSI) system to detect the presence of a substance or to quantify abundance requires an understanding of the many factors in the end-to-end remote sensing scenario from scene to sensor to data expl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913840

13. An Analysis of the Probability Distribution of Spectral Angle and Euclidean Distance in Hyperspectral Remote Sensing Using Microspectroscopy
Published: 5/18/2013
Authors: Ronald Resmini, Christopher Deloye, David W Allen
Abstract: Determining the probability distribution of hyperspectral imagery (HSI) data and of the results of algorithms applied to those data, is critical to understanding algorithm performance and for establishing performance metrics such as probability o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913675

14. Calibration and validation scheme for in vivo spectroscopic imaging of tissue oxygenation
Published: 8/9/2012
Authors: Maritoni Abatayo Litorja, Robert C. Chang, Jeeseong Hwang, David W Allen
Abstract: The determination of the level of oxygenation in optically accessible tissues using multispectral or hyperspectral imaging (HSI ) of oxy- and deoxyhemoglobin has special appeal in clinical work due to its non-invasiveness, ease of use and capability ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909349

15. Developing digital tissue phantoms for hyperspectral imaging of ischemic wounds
Published: 5/18/2012
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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910922

16. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911247

17. Algorithm Validation Using Multicolor Phantoms
Published: 5/9/2012
Authors: Daniel Victor Samarov, Matthew Lawrence Clarke, Ji Y. Lee, David W Allen, Maritoni Abatayo Litorja, Jeeseong Hwang
Abstract: We present a framework for hyperspectral image (HSI) analysis validation, specifically abundance fraction estimation based on HSI measurements of water soluble dye mixtures printed on microarray chips. In our work we focus on the performance of tw ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911285

18. Designing Microarrays Phantoms for Hyperspectral Imaging Validation
Published: 5/9/2012
Authors: Matthew Lawrence Clarke, Ji Y. Lee, Daniel Victor Samarov, David W Allen, Maritoni Abatayo Litorja, Ralph Nossal, Jeeseong Hwang
Abstract: The simple design of custom-tailored microarrays for the characterization of hyperspectral imaging systems and analysis methods for biologically relevant samples. Individual and mixtures of dyes were printed on microscope slides and imaged by a hyper ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910877

19. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910575

20. Hyperspectral Imaging of Ischemic Wounds
Published: 2/1/2012
Author: David W Allen
Abstract: Optical imaging has the potential to achieve high spatial resolution and high functional sensitivity in wound assessment. However, clinical acceptance of many optical imaging devices is hampered by poor reproducibility, low accuracy, and lack of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910362



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