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A Unified Model of Optical and Physical Dot Gain in Printing

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A unified model coping with both physical and optical dot gains on color tone reproduction of print is proposed. The physical dot gain, Δσ, is approximated by a quadratic function of nominal dot percentages, σ0. The function, for each color, is characterized by a single parameter depending on printing technologies as well as ink-paper interactions, and has a symmetric form around σ0 = 50%. Applications to a color laser printer (on office copy paper) reproduces the experimental dot gain curves fairly well. Dependence on physical dot percentage, σ = σ0+Δσ, results in the optical dot gain and in turn the overall dot gain asymmetric forms, plotted against σ0. Furthermore, theoretical analysis reveals fundamental differences between physical and optical dot gains.
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Document Type: Research Article

Publication date: January 1, 2004

More about this publication?
  • Started in 2002 and merged with the Color and Imaging Conference (CIC) in 2014, CGIV covered a wide range of topics related to colour and visual information, including color science, computational color, color in computer graphics, color reproduction, volor vision/psychophysics, color image quality, color image processing, and multispectral color science. Drawing papers from researchers, scientists, and engineers worldwide, DGIV offered attendees a unique experience to share with colleagues in industry and academic, and on national and international standards committees. Held every year in Europe, DGIV papers were more academic in their focus and had high student participation rates.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual papers for details.

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