Perceptual Navigation in Absorption-Scattering Space
Peer reviewed, Journal article
Published version
Permanent lenke
https://hdl.handle.net/11250/2987943Utgivelsesdato
2021Metadata
Vis full innførselSamlinger
Originalversjon
Color and Imaging Conference (CIC). 2021, 328-333. 10.2352/issn.2169-2629.2021.29.328Sammendrag
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.