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N-Ink Printer Characterization With Barycentric Subdivision
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DOI：10.1109/TIP.2016.2560526.png)
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Abstract
En 中文
Printing with a large number of inks, also called N-ink printing, is a challenging task. The challenges comprise spectral modeling of the printer, color separation, halftoning, and limitations of the amount of inks. Juxtaposed halftoning, a perfectly dot-off-dot halftoning method, has proved to be useful to address some of these challenges. However, for juxtaposed halftones, prediction of colors as a function of ink area coverages has not yet been fully investigated. The goal of this paper is to introduce a spectral prediction model for N-ink juxtaposedhalftone prints. As the area-coverage domain of juxtaposed inks forms a simplex, we propose a cellular subdivision of the area-coverage domain using the barycentric subdivision of simplexes. The barycentric subdivision provides algorithmically straightforward means to design and implement an N-ink color prediction model. Within the subdomain cells, the Yule-Nielsen spectral Neugebauer model is used for the spectral prediction. Our proposed model is highly accurate for prints with a large number of inks while requiring a relatively low number of calibration samples.
Keywords:
Printer characterization
multi-channel printing
cellular Yule-Nielsen
color prediction model
spectral modeling
interpolation
simplex
barycentric subdivision
point location problem
multi-material 3D print
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