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Volume: 5 | Article ID: art00033
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Ink-dependent n-factors for the Yule-Nielsen modified spectral Neugebauer model
  DOI :  10.2352/CGIV.2010.5.1.art00033  Published OnlineJanuary 2010
Abstract

Different inks may have different mechanical and/or optical properties. Existing Yule-Nielsen modified Neugebauer spectral prediction models assume however that the inks forming a color halftone behave similarly, i.e. that a single n-factor can model the lateral propagation of light within the paper as well as non-uniformities of the ink dot thickness profiles. However, if the inks have very different optical or mechanical properties, each ink may be separately modeled with its specific n-factor. In order to predict the reflection spectrum of such color halftones, we extend the ink spreading enhanced Yule-Nielsen modified spectral Neugebauer (EYNSN) model by calculating for each halftone an optimal n-factor as an average of the ink specific n-factors weighted by a parabolic function of the ink surface coverages. We compare the prediction accuracies of the standard EYNSN model where each halftone is predicted by making use of one global n-factor with the predictions accuracies of the extended EYNSN model where each halftone is predicted with its corresponding optimal n-factor derived from the individual ink-specific n-factors. For inks having very different optical and/or mechanical properties, we observe an improvement of the prediction accuracies.

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Romain Rossier, Roger D. Hersch, "Ink-dependent n-factors for the Yule-Nielsen modified spectral Neugebauer modelin Proc. IS&T CGIV 2010/MCS'10 5th European Conf. on Colour in Graphics, Imaging, and Vision 12th Int'l Symp. on Multispectral Colour Science,  2010,  pp 202 - 206,  https://doi.org/10.2352/CGIV.2010.5.1.art00033

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Copyright © Society for Imaging Science and Technology 2010
72010351
Conference on Colour in Graphics, Imaging, and Vision
conf colour graph imag vis
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