@ARTICLE{Colbert:2006:BCP,
author={Colbert, Mark and Pattanaik, Sumanta and K{\v{r}}iv{\'a}nek, Jaroslav},
journal={Computer Graphics and Applications, IEEE},
title={BRDF-Shop: creating physically correct bidirectional reflectance distribution functions},
year={2006},
month={jan.-feb. },
volume={26},
number={1},
pages={30 -36},
abstract={A majority of the artists in the graphics community use one of the mainstream packages for modeling and designing a scene for 3D rendering. These packages - such as Alias' Maya, Discreet's 3ds Max, or Newtek's Lightwave -provide slider bars and numerical inputs that let the artist design the material's attributes, such as smoothness and metallic qualities. While advanced users develop a mental mapping from numerical input to material appearance, novice users might not have a natural feel for a material's numeric parameterization. We present a novel and intuitive approach for material design through direct control of the material's bidirectional reflectance distribution function (BRDF) via a series of brush strokes. Using our system, BRDF-Shop, the artist can paint highlights onto a spherical canvas and model a physically correct BRDF. Our principal hypothesis behind this approach is that artists understand materials through the shape and position of the highlights. We propose that these brush strokes; in combination with a real-time display, allow the artist to create a BRDF with intrinsic knowledge of how the highlight will appear on a given object.},
keywords={3D rendering;Alias Maya;BRDF-Shop system;Discreet 3ds Max;Newtek Lightwave;art;bidirectional reflectance distribution functions;brush strokes;material design;painting;scene modeling;art;rendering (computer graphics);solid modelling;Computer Graphics;Computer Simulation;Image Enhancement;Image Interpretation, Computer-Assisted;Imaging, Three-Dimensional;Lighting;Models, Statistical;Models, Theoretical;Paintings;Software;Statistical Distributions;User-Computer Interface;},
doi={10.1109/MCG.2006.13},
url = {http://dx.doi.org/10.1109/MCG.2006.13},
ISSN={0272-1716},
}