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In this issue

In this issue IN THIS ISSUE Generally the measurement of color is done with spectrophotometers using a specified and constant geometry. However, there are many applications where measurements at several or different geometries are necessary. Characterization of metallic or pearlescent materials, testing of optical laws such as Helmholtz reciprocity law, examining standard materials, and investigating goniochromatism are examples in which color measurement at several multiple angles is important. For these applications instruments called goniospectrophotometers have been developed. Goniospectrophotometry, as can be surmised by breaking the word into its parts, is the measurement of visible radiation as a function of wavelength, illuminating angle, and viewing angle. Mark D. Fairchild, Denis J. 0. Daoust, Jason Peterson, and Roy S. Berns review the development and types of goniospectrophotometers available. With the advent of increasing use of multiple measurement angles, the need for well-characterized standard materials for calibration has developed. In their article “Absolute Reflectance Factor Calibration for Goniospectrophotometry,” Fairchild and his coauthors tackle the problem of providing primary standards that are characterized at many combinations of illuminating and viewing geometries. Their purpose was to develop suitable primary transfer standards for goniospectrophotometry. Computer-controlled cathode ray tube (CRT) displays are used for applications ranging from displaying text to animated graphics. Color displays are gaining wider acceptance because they add interest, enhance coding capabilities, and provide easily generated color for psychophysical studies. When color CRT displays are used in research it is important to have a well-defined input-output calibration. Full monitor calibration can be very time consuming. In “Evaluation of a Simple Method for Color Monitor Recalibration,” Marcel P. Lucassen and Jan Walraven describe a recalibration algorithm which reduces measurements to a minimum. A single measurement may result in an acceptable recalibration, and can also keep track of slow changes that may finally necessitate a full recalibration of the monitor. In a continuation of Neville Smith, T. W. Allan Whitfield, and T. J. Whiltshire’s studies involving comparison of color order systems, two articles are included in this issue. The first, “Comparison of the Munsell, NCS, DIN, and Coloroid Colour Order Systems Using the OSA-UCS Model,” contrasts the perceptual scaling for the four systems when OSCUCS is used as the common basis. The second article by the same authors is a description of “A Colour Notation Conversion Program,” which has the capability to interconvert among the following systems: CIE Color Space, CIELAB,CIELUV , Coloroid, DIN, Munsell, Natural Color System, and Optical Society of American-Uniform Color Scale. Color appearance is generally agreed to be three dimensional. Ralph W. Pridmore uses the dimensions of psychophysical saturation, luminance or brightness, and dominant wavelength to find fundamental relationships between the saturation and brightness dimensions of perceived color. In his article, “Model of Saturation and Brightness: Relations with Luminance,” Pridmore derives a model and compares it to available data h m literature. Predictions support Hunt’s concept of colorfulness. In the final section of this issue the readers will find the five-year index for this journal. It is arranged both by author and subject heading. What is more, this is the last five-year index. Beginning in 1991, there will be an annual index in the final issue of each volume. COLOR research and application http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Color Research & Application Wiley

In this issue

Color Research & Application , Volume 15 (6) – Dec 1, 1990
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Publisher
Wiley
Copyright
Copyright © 1990 Wiley Periodicals, Inc., A Wiley Company
ISSN
0361-2317
eISSN
1520-6378
DOI
10.1002/col.5080150604
Publisher site
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Abstract

IN THIS ISSUE Generally the measurement of color is done with spectrophotometers using a specified and constant geometry. However, there are many applications where measurements at several or different geometries are necessary. Characterization of metallic or pearlescent materials, testing of optical laws such as Helmholtz reciprocity law, examining standard materials, and investigating goniochromatism are examples in which color measurement at several multiple angles is important. For these applications instruments called goniospectrophotometers have been developed. Goniospectrophotometry, as can be surmised by breaking the word into its parts, is the measurement of visible radiation as a function of wavelength, illuminating angle, and viewing angle. Mark D. Fairchild, Denis J. 0. Daoust, Jason Peterson, and Roy S. Berns review the development and types of goniospectrophotometers available. With the advent of increasing use of multiple measurement angles, the need for well-characterized standard materials for calibration has developed. In their article “Absolute Reflectance Factor Calibration for Goniospectrophotometry,” Fairchild and his coauthors tackle the problem of providing primary standards that are characterized at many combinations of illuminating and viewing geometries. Their purpose was to develop suitable primary transfer standards for goniospectrophotometry. Computer-controlled cathode ray tube (CRT) displays are used for applications ranging from displaying text to animated graphics. Color displays are gaining wider acceptance because they add interest, enhance coding capabilities, and provide easily generated color for psychophysical studies. When color CRT displays are used in research it is important to have a well-defined input-output calibration. Full monitor calibration can be very time consuming. In “Evaluation of a Simple Method for Color Monitor Recalibration,” Marcel P. Lucassen and Jan Walraven describe a recalibration algorithm which reduces measurements to a minimum. A single measurement may result in an acceptable recalibration, and can also keep track of slow changes that may finally necessitate a full recalibration of the monitor. In a continuation of Neville Smith, T. W. Allan Whitfield, and T. J. Whiltshire’s studies involving comparison of color order systems, two articles are included in this issue. The first, “Comparison of the Munsell, NCS, DIN, and Coloroid Colour Order Systems Using the OSA-UCS Model,” contrasts the perceptual scaling for the four systems when OSCUCS is used as the common basis. The second article by the same authors is a description of “A Colour Notation Conversion Program,” which has the capability to interconvert among the following systems: CIE Color Space, CIELAB,CIELUV , Coloroid, DIN, Munsell, Natural Color System, and Optical Society of American-Uniform Color Scale. Color appearance is generally agreed to be three dimensional. Ralph W. Pridmore uses the dimensions of psychophysical saturation, luminance or brightness, and dominant wavelength to find fundamental relationships between the saturation and brightness dimensions of perceived color. In his article, “Model of Saturation and Brightness: Relations with Luminance,” Pridmore derives a model and compares it to available data h m literature. Predictions support Hunt’s concept of colorfulness. In the final section of this issue the readers will find the five-year index for this journal. It is arranged both by author and subject heading. What is more, this is the last five-year index. Beginning in 1991, there will be an annual index in the final issue of each volume. COLOR research and application

Journal

Color Research & Application – Wiley

Published: Dec 1, 1990

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