Microfacet Distribution Function: To Change or Not to Change, That Is the Question

Dariusz Sawicki

2021

Abstract

In computer graphics and multimedia, bidirectional reflectance distribution function (BRDF) is commonly used for modeling the reflection and refraction of light. In this study, one of the important components of the reflectance models, namely, the microfacet distribution function (MDF) has been considered. The analytical MDFs allow only approximating the real distribution of the surface. Modern graphic software gives the opportunity to select the MDF that fits the real reflection in the best way. The question arises: can we really replace one MDF with another in this situation? And if it is possible, how to convert parameters from one function to the other. The problem is topical, important and practical—for all users of graphic software. In this article, various examples of MDF have been discussed. After RMSE analysis the mathematical dependencies that allow for the exchange of one MDF with the other have been proposed. In this study, consequences of applying different MDFs have been also discussed and comparison of the visual effect has been presented.

Paper Citation

in Harvard Style

Sawicki D. (2021). Microfacet Distribution Function: To Change or Not to Change, That Is the Question. In Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2021) - Volume 1: GRAPP; ISBN 978-989-758-488-6, SciTePress, pages 209-220. DOI: 10.5220/0010252702090220

in Bibtex Style

@conference{grapp21,
author={Dariusz Sawicki},
title={Microfacet Distribution Function: To Change or Not to Change, That Is the Question},
booktitle={Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2021) - Volume 1: GRAPP},
year={2021},
pages={209-220},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010252702090220},
isbn={978-989-758-488-6},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2021) - Volume 1: GRAPP
TI - Microfacet Distribution Function: To Change or Not to Change, That Is the Question
SN - 978-989-758-488-6
AU - Sawicki D.
PY - 2021
SP - 209
EP - 220
DO - 10.5220/0010252702090220
PB - SciTePress