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Volume: 1 | Article ID: art00124
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Prediction of Color in Halftone Prints using Core-Fringe Model
Yoshihiko Azuma
Hiromi Uomoto
Shunsuke Takahashi
Masao Inui
  DOI :  10.2352/CGIV.2002.1.1.art00124  Published Online :  January 2002
Abstract

It is well known that the chromaticity coordinate points of a single ink halftone ramp are in a curve on the CIE xy chromaticity diagram. This non-linear behavior is caused by a color component, which is neither the color of paper nor the color of ink. This third component can result from both variation of ink layer thickness and light scattering in paper.In the current study, we used a halftone dot structure model to simulate the variation of ink layer thickness and then estimated the colorimetric characteristics of single ink halftone print.Our model assumes that a halftone dot consists of two regions. One region is a central area of the dot that has the same thickness of ink layer as that of the solid print, and is referred as “core”. The other region is the marginal area of the dot that has thinner ink layer than that of the solid print, and is referred as “fringe”. Using this model, we calculated the reflectance spectra and chromaticity coordinates for single ink halftone ramps and then compared them with the measured values. Consequently, the model could describe the non-linear behavior of single ink halftone prints as well as predict the reflectance spectra more precisely than the Murray-Davies model.

Journal Title : Conference on Colour in Graphics, Imaging, and Vision
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/CGIV.2002.1.1.art00124
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Yoshihiko Azuma, Hiromi Uomoto, Shunsuke Takahashi, Masao Inui, "Prediction of Color in Halftone Prints using Core-Fringe Model"  in Proc. IS&T CGIV 2002 First European Conf. on Colour in Graphics, Imaging, and Vision,  2002,  pp 594 - 597,  https://doi.org/10.2352/CGIV.2002.1.1.art00124

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Copyright © Society for Imaging Science and Technology 2002
72010351
Conference on Colour in Graphics, Imaging, and Vision
conf colour graph imag vis
2158-6330
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA
2158-6330(20020101)2002:1L.594;1-
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Articles
Prediction of Color in Halftone Prints using Core-Fringe Model
AzumaYoshihiko
UomotoHiromi
TakahashiShunsuke
InuiMasao
01012002
2002
1
594
597
2002
It is well known that the chromaticity coordinate points of a single ink halftone ramp are in a curve on the CIE xy chromaticity diagram. This non-linear behavior is caused by a color component, which is neither the color of paper nor the color of ink. This third component can result from both variation of ink layer thickness and light scattering in paper.In the current study, we used a halftone dot structure model to simulate the variation of ink layer thickness and then estimated the colorimetric characteristics of single ink halftone print.Our model assumes that a halftone dot consists of two regions. One region is a central area of the dot that has the same thickness of ink layer as that of the solid print, and is referred as “core”. The other region is the marginal area of the dot that has thinner ink layer than that of the solid print, and is referred as “fringe”. Using this model, we calculated the reflectance spectra and chromaticity coordinates for single ink halftone ramps and then compared them with the measured values. Consequently, the model could describe the non-linear behavior of single ink halftone prints as well as predict the reflectance spectra more precisely than the Murray-Davies model.