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Modeling of colour reproduction

Innventia has been one of the leading players in developing the physical models of Colour tone reproduction. We have methods that can quantitatively evaluate the effects of different factors related to printing and papermaking, such as physical and optical dot gains, fluorescence, interface reflection, etc.

In a printed image, Colour tones are produced by ink dots of different ink coverage, also known as dot percentage or tone value. Generally speaking, the true ink coverage of the print differs from its original, regardless if it is printed with conventional or digital technologies. Ink-transfer that is governed by printing dynamics is one of the major causes, especially for printing with conventional technologies, resulting in the so-called physical dot gain. On the other hand optical effects affect perceived Colour. These include illumination, light reflection at the air/print interface, lateral scattering, fluorescent emissions of the substrate etc.

Beskrivning: Light_Ref_Pap_Prnt.jpg

Illustration of light reflection by a print, consisting of light interfacial reflection and lateral light scattering.


Li Yang
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Li Yang, Probabilistic spectral model of Colour halftone incorporating substrate fluorescence and interface reflections, J. Optical Society of America A, vol. 27, 2115-2122 (2010).

Coppel L.G., Neuman M., Edström P., " Lateral light scattering in paper – MTF simulation and measurement," Optics Express 19(25),p. 25181-25187 (2011).