Alexander Rath, M.Sc. Researcher
Research Interests
importance sampling wave optics lens designBiography
Hi, I’m Alex. I grew up in a small village in Rheinland-Pfalz with more cows than residents, but it still had better internet than where I live in Saarland now ;-) I’m trying to pick up a bit of French here and there, but I mostly only speak English and German.
What got me obsessed with computer graphics is that you can get photorealistic images with just a single elegant equation! And now I am researching how you can do that as efficiently as possible with good importance sampling, algorithmic improvements or just clever implementations. Apart from my light transport research, I’m also in charge of the radar research at the chair. There’s a lot of interesting analogies between light and radar, which means you can transfer cool ideas from one research field to the other. But there’s also plenty of challenging differences, in particular wave effects. I also do some research in machine learning and lens design on the side, and I occasionally like to explore unusual ideas like shadow transport simulation or block-chain ray-tracing.
When I’m not staring at my monitor wall at the chair, I can usually be found touring with my band, doing event photography, building antennas or playing pen and paper. Oh, and I have this bad habbit of drumming on tables, which sometimes gets me into trouble…
Publications
MARS: Multi-sample Allocation through Russian roulette and Splitting
@inproceedings{meyerMARSMultisampleAllocation2024,
author = {Meyer, Joshua and Rath, Alexander and Yazici, \"{O}mercan and Slusallek, Philipp},
title = {{{MARS}}: {{Multi-sample Allocation}} through {{Russian Roulette}} and {{Splitting}}},
shorttitle = {MARS},
year = {2024},
month = {dec},
isbn = {9798400711312},
publisher = {Association for Computing Machinery},
address = {New York, NY, USA},
url = {https://doi.org/10.1145/3680528.3687636},
doi = {10.1145/3680528.3687636},
booktitle = {SIGGRAPH Asia 2024 Conference Papers},
articleno = {20},
numpages = {10},
keywords = {Russian roulette, splitting, multi-sample, multiple importance sampling},
series = {SA '24}
}
N-BVH: Neural ray queries with bounding volume hierarchies
@inproceedings{Weier:2024:NeuralBVH,
author = {Philippe Weier and Alexander Rath and \'{E}lie Michel and Iliyan Georgiev and Philipp Slusallek and Tamy Boubekeur},
title = {N-BVH: Neural ray queries with bounding volume hierarchies},
booktitle = {ACM SIGGRAPH 2024 Conference Proceedings},
year = {2024},
doi = {10.1145/3641519.3657464},
isbn = {979-8-4007-0525-0/24/07}
}
Focal Path Guiding for Light Transport Simulation
@inproceedings{Rath2023,
author = {Rath, Alexander and Yazici, \"{O}mercan and Slusallek, Philipp},
title = {Focal Path Guiding for Light Transport Simulation},
year = {2023},
isbn = {9798400701597},
publisher = {Association for Computing Machinery},
address = {New York, NY, USA},
url = {https://doi.org/10.1145/3588432.3591543},
doi = {10.1145/3588432.3591543},
articleno = {30},
numpages = {10},
}
EARS: Efficiency-Aware Russian Roulette and Splitting
@article{Rath2022,
author = {Rath, Alexander and Grittmann, Pascal and Herholz, Sebastian and Weier, Philippe and Slusallek, Philipp},
title = {EARS: Efficiency-Aware Russian Roulette and Splitting},
journal = {ACM Transactions on Graphics (Proceedings of SIGGRAPH 2022)},
numpages = {14},
volume = {41},
number = {4},
articleno = {81},
year = {2022},
month = {jul},
doi = {10.1145/3528223.3530168},
publisher = {ACM}
}
Variance-Aware Path Guiding
@article{Rath2020,
author = {Rath, Alexander and Grittmann, Pascal and Herholz, Sebastian and V{\'{e}}voda, Petr and Slusallek, Philipp and K{\v{r}}iv{\'{a}}nek, Jaroslav},
title = {Variance-Aware Path Guiding},
journal = {ACM Transactions on Graphics (Proceedings of SIGGRAPH 2020)},
pages = {151:1--151:12},
volume = {39},
number = {4},
year = 2020,
month = jul,
date = {2020-07-17/2020-07-20},
doi = {10.1145/3386569.3392441},
publisher = {ACM}
}
