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Search Publications by: Joseph P Rice (Fed)

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Displaying 51 - 75 of 164

Metrology for Remote Sensing Radiometry

October 16, 2008
Author(s)
B. Carol Johnson, Steven W. Brown, Joseph P. Rice
Metrology, the science of measurement, is discussed in terms of measurements of radiant flux and associated quantities. Radiometric measurements are naturally remote, that is, they are non-contact. A broad application is Earth science, as global

Standards for Monitoring the Temperature of Earth From Space

October 16, 2008
Author(s)
Joseph P. Rice
The National Aeronautical and Spece Administration (NASA), the National Oceanic and Atmospheric Administration (NOAA), the Department of Defense (DOD), the Department of Energy (DOE), and other Government agencies have projects in which space-flight

Evaluation of Thermal Imaging Cameras

October 1, 2008
Author(s)
Francine K. Amon, Andrew J. Lock, Nelson P. Bryner, Joseph P. Rice, Howard Yoon
Four thermal infrared cameras that were provided by Bureau of Industry and Security (BIS) to NIST were each evaluated by the NIST Optical Technology Division (OTD) for three metrics: Noise-equivalent Temperature Difference (NETD), Minimum Detectable

Measurement science for climate remote sensing

August 20, 2008
Author(s)
Gerald T. Fraser, Steven W. Brown, Raju V. Datla, Bettye C. Johnson, Keith R. Lykke, Joseph P. Rice
The Earth s climate is very complex and highly variable, making it difficult to measure and model small changes that occur over decadal and longer time scales. The resulting uncertainties in measurement and modeling underlie the longterm debate over the

Development of Infrared Scene Projectors for Fire Fighter Cameras

March 2, 2008
Author(s)
Joseph P. Rice, Jorge E. Neira, Francine K. Amon
We have developed two types of infrared scene projectors for hardware-in-the-loop testing of thermal imaging cameras such as those used by fire-fighters. In one, direct projection, images are projected directly into the camera. In the other, indirect

Dynamically Programmable Digital Tissue Phantoms

December 31, 2007
Author(s)
Steven W. Brown, Joseph P. Rice, David W. Allen, Maritoni A. Litorja, Karel Zuzak, Edward Livingston
As optical imaging modalities gain acceptance for medical diagnostics and become common in clinical applications, standardized protocols to quantitatively assess optical sensor performance are required to ensure commonality in measurements and to validate

Evaluation of a Portable Hyperspectral Imager for Medical Imaging Applications

October 2, 2007
Author(s)
David W. Allen, Maritoni A. Litorja, Steven W. Brown, Joseph P. Rice, Yuqin Zong
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 imager is

A Hyperspectral Image Projector for Hyperspectral Imagers

September 3, 2007
Author(s)
Joseph P. Rice, Steven W. Brown, Jorge E. Neira, Robert R. Bousquet
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

Hyperspectral Image Projector for Advanced Sensor Characterization

December 4, 2006
Author(s)
Steven W. Brown, Joseph P. Rice, Jorge E. Neira, Bettye C. Johnson
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 and