Ms. Dongjuan Zang Profile

Dongjuan Zang

at Jiangnan Univ

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Proceedings Article | 28 January 2008 Paper

Reflectance model for color halftone prints

Yixin Zhang, Jinghuan Ge, Dongjuan Zang

Proceedings Volume 6807, 680718 (2008) https://doi.org/10.1117/12.754643

KEYWORDS: Halftones, Reflectivity, Data modeling, Light scattering, Reflection, Lithography, Stochastic processes, Interfaces, Transmittance, Solids

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The scattering of light within paper and the ink penetration in the substrate are the key factors which affect the color reproduction. A reflectance model for color halftone prints is introduced in this paper which considers these factors. The model is obtained by the extended Murray-Davies model and iterative algorithm. The model described in this paper contains two parameters, n and v . The n factor equals to the sum of w and v . The w factor relates to the optical spread function of paper relative to the spatial frequency of the halftone dots. The v factor relates to the distribution of colorant within the dots. The value of n and v are obtained by simulation according to the experimental data. For offset lithographic halftone data at 150lpi, the value of n and v are 1.578 and 0.02, thermal wax transfer halftone ( n =2.292, v =0.0209) and stochastic halftone ( n =1.1853, v =-0.006).

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