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Simulation of Paper Gloss by Point Spread Function of Specular Reflection

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We present a method to simulate paper gloss by using Point Spread Function of Specular Reflection (SR-PSF). The SR-PSF is defined as an impulse response of specular reflection that is distribution of light intensity reflected from microscopic facet on the surface of paper. The paper gloss is a combined phenomenon between the specular reflections from microscopic facet and macroscopic facet of paper.

In this study, we measure the SR-PSFs of paper samples that have different levels of specular gloss placed on a flat sample holder. Simulations for gloss of curved paper sample are done by transforming the measured SR-PSFs as a function of angle of macroscopic facet.

In the simulation, we convolve the transformed SR-PSFs with an image of a light source reflected on a cylindrically-curved specular object. Then we add the convolved light source image to an image of a sample paper placed on the curved object. The image of the sample paper is taken with polarizing filter to remove the gloss of the paper.

Our results show that the gloss of the curved paper samples can be simulated depending on the specular gloss with the SR-PSF.
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Document Type: Research Article

Publication date: January 1, 2012

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  • CIC is the premier annual technical gathering for scientists, technologists, and engineers working in the areas of color science and systems, and their application to color imaging. Participants represent disciplines ranging from psychophysics, optical physics, image processing, color science to graphic arts, systems engineering, and hardware and software development. While a broad mix of professional interests is the hallmark of these conferences, the focus is color. CICs traditionally offer two days of short courses followed by three days of technical sessions that include three keynotes, an evening lecture, a vibrant interactive (poster) papers session, and workshops. An endearing symbol of the meeting is the Cactus Award, given each year to the author(s) of the best interactive paper; there are also Best Paper and Best Student Paper awards.

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