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You searched on: Author: steven brown

Displaying records 21 to 30 of 152 records.
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21. Characterization of Earth-Observing Satellite Instruments for Response to Spectrally and Spatially Variable Scenes
Published: 12/3/2007
Authors: Steven W Brown, Bonnie Myers, R Barnes, Joseph Paul Rice
Abstract: In this work, we present a radiometric platform for the development of application-specific metrics to quantify the performance of sensors and systems viewing realistic spectral and spatial scenes. There are two components to the platform, both base ...

22. Characterization and Correction of Stray Light in Optical Instruments
Published: 11/1/2007
Authors: Yuqin Zong, Steven W Brown, G Meister, R Barnes, Keith R Lykke
Abstract: Improperly imaged, or scattered, optical radiation within an instrument is difficult to properly characterize and is often the dominant residual source of measurement error. Scattered light can originate from the spectral components of a point sour ...

23. The Marine Optical BuoY (MOBY) Radiometric Calibration and Uncertainty Budget for Ocean Color Satellite Sensor Vicarious Calibration
Published: 11/1/2007
Authors: Steven W Brown, S Flora, M Feinholz, M Yarbrough, Terrance Houlihan, D Peters, Yong S. Kim, J Mueller, Bettye C Johnson, Dennis Clark
Abstract: For the past decade, the Marine Optical Buoy (MOBY), an autonomous radiometric buoy stationed in the waters off Lanai, Hawaii, has been the primary in-water oceanic observatory for the vicarious calibration of U. S. satellite ocean color sensors, inc ...

24. Evaluation of a Portable Hyperspectral Imager for Medical Imaging Applications
Published: 10/2/2007
Authors: David W Allen, Maritoni Abatayo Litorja, Steven W Brown, Joseph Paul Rice, Yuqin Zong
Abstract: Portable hyperspectral imagers are becoming commonly available as a commercial product. A liquid crystal tunable filter based CCD imager was evaluated and characterized for spectral stray light using a tunable laser facility. The hyperspectral imag ...

25. A Hyperspectral Image Projector for Hyperspectral Imagers
Published: 9/3/2007
Authors: Joseph Paul Rice, Steven W Brown, Jorge Enrique Neira, Robert R. Bousquet
Abstract: We have developed and demonstrated a Hyperspectral Image Projector (HIP) intended for system-level validation testing of hyperspectral imagers, including the instrument and any associated spectral unmixing algorithms. HIP, based on the same digital ...

26. Correction of Stray Light In Spectroradiometers and Imaging Instruments
Published: 7/4/2007
Authors: Yuqin Zong, Steven W Brown, Keith R Lykke, Yoshihiro Ohno
Abstract: Measurement errors from stray light, spectral or spatial, are inevitable and are often the dominant source of error in spectroradiometers and imaging radiometers/photometers. We have developed a simple matrix method for correcting spatial stray light ...

27. Comparison of absolute spectral irradiance responsivity measurement techniques using wavelength-tunable lasers
Published: 6/20/2007
Authors: V Ahtee, Steven W Brown, Thomas C Larason, Keith R Lykke, E and Noorma Ikonen

28. Development of Surgical Lighting for Enhanced Color Contrast
Published: 5/14/2007
Authors: Maritoni Abatayo Litorja, Steven W Brown, Maria E Nadal, David W Allen, Alexander Gorbach
Abstract: The National Institute of Standards and Technology and the National Institutes of Health have started a collaborative study on the development of lighting that will provide enhanced, specific to various tissues, contrast with respect to its surroundi ...

29. Hyperspectral Image Projector for Advanced Sensor Characterization
Published: 12/4/2006
Authors: Steven W Brown, Joseph Paul Rice, Jorge Enrique Neira, Bettye C Johnson
Abstract: In this work, we describe radiometric platforms able to produce realistic spectral distributions and spatial scenes for the development of application-specific metrics to quantify the performance of sensors and systems. Using these platforms, sensor ...

30. Development of Hyperspectral Image Projectors
Published: 11/1/2006
Authors: Joseph Paul Rice, Steven W Brown, Jorge Enrique Neira
Abstract: We present design concepts for calibrated hyperspectral image projectors (HIP) and related sources intended for system-level testing of instruments ranging from complex hyperspectral or multispectral imagers to simple filter radiometers. HIP, based o ...

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