@article{PB-VRVis-2020-013,
author = {Luksch, Christian and Prost, Lukas and Wimmer, Michael},
title = {Real-time Approximation of Photometric Polygonal Lights},
year = {2020},
journaltitle = {Proceedings of the ACM on Computer Graphics and Interactive Techniques},
doi = {10.1145/3384537},
url = {https://www.vrvis.at/publications/PB-VRVis-2020-013},
publisher = {The Association for Computers in Mathematics and Science Teaching},
volume = {3},
abstract = {We present a real-time rendering technique for photometric polygonal
lights. Our method uses a numerical integration technique based on a
triangulation to calculate noise-free diffuse shading. We include a dynamic
point in the triangulation that provides a continuous near-field
illumination resembling the shape of the light emitter and its
characteristics. We evaluate the accuracy of our approach with a diverse
selection of photometric measurement data sets in a comprehensive benchmark
framework.
Furthermore, we provide an extension for specular reflection on surfaces
with arbitrary roughness that facilitates the use of existing real-time
shading techniques.
Our technique is easy to integrate into real-time rendering systems and
extends the range of possible applications with photometric area lights.},
keywords = {area lights, photometric lights, real-time rendering},
number = {1},
month = {April},
}