The Dual-microfacet Model for Capturing Thin Transparent Slabs
No Thumbnail Available
Date
2009
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association and Blackwell Publishing Ltd
Abstract
We present a new model, called the dual-microfacet, for those materials such as paper and plastic formed by a thin, transparent slab lying between two surfaces of spatially varying roughness. Light transmission through the slab is represented by a microfacet-based BTDF which tabulates the microfacet s normal distribution (NDF) as a function of surface location. Though the material is bounded by two surfaces of different roughness, we approximate light transmission through it by a virtual slab determined by a single spatially-varying NDF. This enables efficient capturing of spatially variant transparent slices. We describe a device for measuring this model over a flat sample by shining light from a CRT behind it and capturing a sequence of images from a single view. Our method captures both angular and spatial variation in the BTDF and provides a good match to measured materials.
Description
@article{10.1111:j.1467-8659.2009.01570.x,
journal = {Computer Graphics Forum},
title = {{The Dual-microfacet Model for Capturing Thin Transparent Slabs}},
author = {Dai, Qiang and Wang, Jiaping and Liu, Yiming and Snyder, John and Wu, Enhua and Guo, Baining},
year = {2009},
publisher = {The Eurographics Association and Blackwell Publishing Ltd},
ISSN = {1467-8659},
DOI = {10.1111/j.1467-8659.2009.01570.x}
}