Results 1 - 10 of 48

Simple Analytic Approximations to the CIE XYZ Color Matching Functions

by Chris Wyman, Peter-pike Sloan, Peter Shirley
"... We provide three analytical fits to the CIE ¯x, ¯y, and ¯z color matching curves commonly used in predictive and spectral renderers as an intermediate between light spectra and RGB colors. Any of these fits can replace the standard tabulated CIE curves. Using tabulated curves can introduce typos, en ..."
Abstract - Cited by 2 (0 self) - Add to MetaCart
We provide three analytical fits to the CIE ¯x, ¯y, and ¯z color matching curves commonly used in predictive and spectral renderers as an intermediate between light spectra and RGB colors. Any of these fits can replace the standard tabulated CIE curves. Using tabulated curves can introduce typos

Coding efficiency of CIE color spaces

by David H. Foster, Iván Marín-franch, Sérgio M. C. Nascimento, Kinjiro Amano, School Electrical, Electronic Engineering
"... Estimates were made of the efficiency with which color spaces code color information from images of natural scenes. Six spaces were tested, namely, CIE XYZ tristimulus space, and the spaces CIELUV, CIELAB, CIELAB and S-CIELAB after chromatic adaptation with CMCCAT2000, and the space CIECAM02. For ea ..."
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Estimates were made of the efficiency with which color spaces code color information from images of natural scenes. Six spaces were tested, namely, CIE XYZ tristimulus space, and the spaces CIELUV, CIELAB, CIELAB and S-CIELAB after chromatic adaptation with CMCCAT2000, and the space CIECAM02

Optimal Linear RGB-to-XYZ Mapping for Color Display Calibration

by Brian Funt, Roozbeh Ghaffari, Behnam Bastani - Proc. IS&T/SID 12th Color Imaging Conference 2004
"... Color display calibration, in part, involves mapping input RGB values to corresponding output values in a standardized color space such as CIE XYZ. A linear model for RGB-to-XYZ mapping is based on a 3-by-3 linear transformation matrix T mapping data from (linearized) RGB to XYZ. Such a mapping is o ..."
Abstract - Cited by 4 (2 self) - Add to MetaCart
Color display calibration, in part, involves mapping input RGB values to corresponding output values in a standardized color space such as CIE XYZ. A linear model for RGB-to-XYZ mapping is based on a 3-by-3 linear transformation matrix T mapping data from (linearized) RGB to XYZ. Such a mapping

Color Scanner Performance Trade-offs

by G. Sharma, H.J. Trussell - Proc. SPIE Color Imaging DeviceIndependent Color, Color Hard Copy, and Graphic Arts , 1996
"... The goal of a general purpose color scanner is to determine the color of an object in a device independent color space, such as the CIE XYZ tristimulus space. Raw sensor measurements from scanners rarely correspond to CIE XYZ due to design and realizability constraints. The conversion of data from s ..."
Abstract - Cited by 6 (3 self) - Add to MetaCart
The goal of a general purpose color scanner is to determine the color of an object in a device independent color space, such as the CIE XYZ tristimulus space. Raw sensor measurements from scanners rarely correspond to CIE XYZ due to design and realizability constraints. The conversion of data from

Comparative analysis of the quantization of color spaces on the basis of the CIE-Lab color dierence formula

by B. Hill, Th. Roger, F. W. Vorhagen - ACM Transaction of Graphics , 1997
"... This article discusses the CIELAB color space within the limits of optimal colors including the complete volume of object colors. A graphical representation of this color space is composed of planes of constant lightness L * with a net of lines parallel to the a * and b * axes. This uniform net is p ..."
Abstract - Cited by 23 (0 self) - Add to MetaCart
is projected onto a number of other color spaces (CIE XYZ, tristimulus RGB, predistorted RGB, and YCC color space) to demonstrate and study the structure of color differences in these spaces on the basis of CIELAB color difference formulas. Two formulas are considered: the CIE 1976 formula DEab and the newer

•Not Color Differences

by Macuser April, Tungsten Print White
"... According to Wyszecki (1973): Basic Colorimetry involves the specification of color matches (i.e., nominal scaling, CIE XYZ). Advanced Colorimetry involves the specification of color differences and color appearance (i.e., interval and ratio scaling, CIELAB and beyond). ..."
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According to Wyszecki (1973): Basic Colorimetry involves the specification of color matches (i.e., nominal scaling, CIE XYZ). Advanced Colorimetry involves the specification of color differences and color appearance (i.e., interval and ratio scaling, CIELAB and beyond).

EVOLUTION OF VIDEO COLOR/TRASH PROCESSING AT SOUTHWESTERN COTTON GINNING RESEARCH

by Michael A. Lieberman, Murali Siddaiah
"... The status of video cotton trash and cotton color measurement work at Southwestern Cotton Ginning Research Laboratory (SWCGRL) is presented. New accomplishments are in the areas of video measurement of absolute color in CIE XYZ and Hunter’s Rdab color spaces and improvements of bark trash type ident ..."
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The status of video cotton trash and cotton color measurement work at Southwestern Cotton Ginning Research Laboratory (SWCGRL) is presented. New accomplishments are in the areas of video measurement of absolute color in CIE XYZ and Hunter’s Rdab color spaces and improvements of bark trash type

sRGB uses ITU-R BT.709 primaries

by Red Green, Blue White
"... threedimensional color space CIE XYZ is the basis for all color management systems. This color space contains all perceivable colors- the human gamut. Many of them cannot be shown on monitors or printed. The twodimensional CIE chromaticity diagram xyY (below) shows a special projection of the threed ..."
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threedimensional color space CIE XYZ is the basis for all color management systems. This color space contains all perceivable colors- the human gamut. Many of them cannot be shown on monitors or printed. The twodimensional CIE chromaticity diagram xyY (below) shows a special projection

Two Approaches In Scanner-Printer Calibration: Colorimetric Space-Based Vs. "closed-Loop".

by V. Ostromoukhov, R.D. Hersch, C. Peraire, P. Emmel, I. Amidror - Proc. SPIE , 1994
"... The present paper studies two different table-based approaches for the calibration of electronic imaging systems. The first approach, which is the classical one,uses the device-independent CIE-XYZ colorimetric space as an intermediate standard space. Input and output devices such as scanners, displa ..."
Abstract - Cited by 6 (1 self) - Add to MetaCart
The present paper studies two different table-based approaches for the calibration of electronic imaging systems. The first approach, which is the classical one,uses the device-independent CIE-XYZ colorimetric space as an intermediate standard space. Input and output devices such as scanners

TWO APPROACHES IN SCANNER-PRINTER CALIBRATION:

by Calibration Colorimetric, Space-based Vs, Victor Ostromoukhov, Roger David Hersch, École Polytechnique, Fédérale Lausanne, Patrick Emmel, V. Ostromoukhov, R. D. Hersch, P. Emmel, I. Amidror
"... The present paper studies two different table-based approaches for the calibration of electronic imaging systems. The first approach, which is the classical one,uses the device-independent CIE-XYZ colorimetric space as an intermediate standard space. Input and output devices such as scanners, displa ..."
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The present paper studies two different table-based approaches for the calibration of electronic imaging systems. The first approach, which is the classical one,uses the device-independent CIE-XYZ colorimetric space as an intermediate standard space. Input and output devices such as scanners
Results 1 - 10 of 48