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  4. Perceptual Navigation in Absorption-Scattering Space
 
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2021
Conference Paper
Titel

Perceptual Navigation in Absorption-Scattering Space

Abstract
Translucency optically results from subsurface light transport and plays a considerable role in how objects and materials appear. Absorption and scattering coefficients parametrize the distance a photon travels inside the medium before it gets absorbed or scattered, respectively. Stimuli produced by a material for a distinct viewing condition are perceptually non-uniform w.r.t. these coefficients. In this work, we use multi-grid optimization to embed a non-perceptual absorption-scattering space into a perceptually more uniform space for translucency and lightness. In this process, we rely on A (alpha) as a perceptual translucency metric. Small Euclidean distances in the new space are roughly proportional to lightness and apparent translucency differences measured with A. This makes picking A more practical and predictable, and is a first step toward a perceptual translucency space.
Author(s)
Gigilashvili, Davit
Norwegian Univ. of Science and Technology
Urban, Philipp
Fraunhofer-Institut für Graphische Datenverarbeitung IGD
Thomas, Jean-Baptiste
Norwegian Univ. of Science and Technology
Pedersen, Marius
Norwegian Univ. of Science and Technology
Hardeberg, Jon Yngve
Norwegian Univ. of Science and Technology
Hauptwerk
29th Color and Imaging Conference, CIC 2021. Final Program and Proceedings
Konferenz
Color Imaging Conference (CIC) 2021
Thumbnail Image
DOI
10.2352/issn.2169-2629.2021.29.328
Language
English
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Fraunhofer-Institut für Graphische Datenverarbeitung IGD
Tags
  • Lead Topic: Digitized Work

  • Research Line: Computer graphics (CG)

  • Research Line: Human computer interaction (HCI)

  • Research Line: Modeling (MOD)

  • translucency

  • perception

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