Accounting for inks interaction in the Yule-Nielsen spectral Neugebauer model

摘要: Multispectral printer characterization requires an effective model to map the inputs (i.e., digital counts of inks) into reflectance spectra and vice versa. Most methods for modeling are based on color mixing Neugebauer, but this model, in its original formulation, is a rather poor predictor printer's output, since it fails take account many relevant phenomena that place printing process. These phenomena, which include light scattering within substrate, internal surface reflection, ink spreading, determine enlargement drops called dot gain, differs basis substrate condition. This paper presents novel strategy gain interaction among inks definition Yule-Nielsen spectral Neugebauer equation. The method proposed has been designed four-ink jet printer, formulation general may be extended devices having more than four inks. Our relatively large number parameters, we estimate using genetic algorithms. tested two different printers: An Epson Stylus-Color™ 740 StylusPhoto™ 890 printer. Using data set consisting 777 samples, regularly distributed HSV space, have obtained accuracy terms mean root squared error 0.59% 1.54 ΔE' ab first 1.02% 2.04 second With respect approach single function each ink, our functions reduced average square test about 40% average.