Ph.D. Course in Digital Halftoning Examples of Colorimetric Modeling Methods Lars Bergman, Halmstad University
Digital halftoning - Lars Bergman Papers A Critical Review of Spectral Models Applied to Binary Color Printing The Spectral Modeling of Large Format InkJet Printers 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Forward RGB -> CMY(K) Reversed How much CMY(K) for a given RGB Predict the spectral output of the printer Effective dot area 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Effective dot area Mechanical dot gain Ink cover larger area on paper then intended Optical dot gain Light spread in paper (and ink) 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Typical machanical dot gain for a desktop inkjet printer 2018-11-28 Digital halftoning - Lars Bergman
A Critical Review of Spectral Models Applied to Binary Color Printing
Digital halftoning - Lars Bergman Models Regression based Murray-Davis Neugebauer Yule-Nielsen Yule-Nielsen modified Neugebauer Cellular Neugebauer Yule-Nielsen with spectral depending N-value First principals models (Regressing the Neugebauer Primarys) (Expanded Murray-Davis Model) The Propability model Modeling paper spread function 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Murray-Davis 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman effective area 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Neugebauer 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Yule-Nielsen Trys to correct for the non linearity in Murray-Davis model Recomended N=1.7 for offset prints 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman 2018-11-28 Digital halftoning - Lars Bergman
Yule-Nielsen modified Neugebauer Combining Yule-Nielsen and Neugebauer Yule-Nielsen is used separate for each color 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Cellular Neugebauer 2018-11-28 Digital halftoning - Lars Bergman
Yule-Nielsen with spectral depending N-value Spectral reflectance for primary cyan ramp 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman The Propability model Light path Probabilities 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman 2018-11-28 Digital halftoning - Lars Bergman
Modeling paper spread function Convolution with LP filter Can handle nonuniform screens/dots Computational heavy 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Quality meassure Spectral fitness RMS Spectral error Tristimulus fitness Humanly correct ICC profiles CIE DE 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Model performances 2018-11-28 Digital halftoning - Lars Bergman
The Spectral Modeling of Large Format InkJet Printers
Digital halftoning - Lars Bergman Screening Determing the number of colors (ink combinations) 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman HP650C HP650 use ”Scatter mode” FM-based screening 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Testdata Primary ramp CMYRGBK Ramp Test target used to characterize each color types spectral absorptivity. 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Meassured spectral rflectance factor data of a cyan ramp 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Linear model prediction for 50% cyan using Murray-Davis model 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Normalized reflectance factor spectra for cyan ramp data 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Normalized reflectance factor spectra for cyan ramp data using Yule-Nielsen-model N=1.7 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Normalized reflectance factor spectra for cyan ramp data using Yule-Nielsen-model N=10 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Linear model prediction for 50% cyan 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Normalized absorbtion spectra for cyan ramp data using Kubelka-Munck transparent model 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Normalized absorptivities based on eigenvector analyses of eight possible color types. 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Method Evaluate halftoning algorithm in order to determine the number of possible colortypes. Hypothesize a color formation model Evaluate how well the hypothesized model predict primary ramps Evaluate secondary and tertiaries ramps Quantify the mechanical dot gain 2018-11-28 Digital halftoning - Lars Bergman
Digital halftoning - Lars Bergman Experiments Device driver GCR Registration Test target design Printer stability 2018-11-28 Digital halftoning - Lars Bergman
Optimized Yule-Nielsen n value for CMYRGBK 2018-11-28 Digital halftoning - Lars Bergman
The END