SkyGAN: Towards Realistic Cloud Imagery for Image Based Lighting
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10447099" target="_blank" >RIV/00216208:11320/22:10447099 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.2312/sr.20221151" target="_blank" >https://doi.org/10.2312/sr.20221151</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2312/sr.20221151" target="_blank" >10.2312/sr.20221151</a>
Alternative languages
Result language
angličtina
Original language name
SkyGAN: Towards Realistic Cloud Imagery for Image Based Lighting
Original language description
Achieving photorealism when rendering virtual scenes in movies or architecture visualizations often depends on providing a realistic illumination and background. Typically, spherical environment maps serve both as a natural light source from the Sun and the sky, and as a background with clouds and a horizon. In practice, the input is either a static high-resolution HDR photograph manually captured on location in real conditions, or an analytical clear sky model that is dynamic, but cannot model clouds. Our approach bridges these two limited paradigms: a user can control the sun position and cloud coverage ratio, and generate a realistically looking environment map for these conditions. It is a hybrid data-driven analytical model based on a modified state-of-the-art GAN architecture, which is trained on matching pairs of physically-accurate clear sky radiance and HDR fisheye photographs of clouds. We demonstrate our results on renders of outdoor scenes under varying time, date, and cloud covers.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
Result continuities
Project
<a href="/en/project/EF19_073%2F0016935" target="_blank" >EF19_073/0016935: Grant schemes at Charles University</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Rendering 2022 - Symposium Track
ISBN
978-3-03868-187-8
ISSN
1727-3463
e-ISSN
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Number of pages
10
Pages from-to
13-22
Publisher name
The Eurographics Association
Place of publication
Goslar, Germany
Event location
Prague
Event date
Jul 4, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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