Interactive Meso‐scale Simulation of Skyscapes

Although an important component of natural scenes, the representation of skyscapes is often relatively simplistic. This can be largely attributed to the complexity of the thermodynamics underpinning cloud evolution and wind dynamics, which make interactive simulation challenging. We address this problem by introducing a novel layered model that encompasses both terrain and atmosphere, and supports efficient meteorological simulations. The vertical and horizontal layer resolutions can be tuned independently, while maintaining crucial inter‐layer thermodynamics, such as convective circulation and land‐air transfers of heat and moisture. In addition, we introduce a cloud‐form taxonomy for clustering, classifying and upsampling simulation cells to enable visually plausible, finely‐sampled volumetric rendering.

[1]  Nelson L. Max,et al.  Interactive multiple anisotropic scattering in clouds , 2008, I3D '08.

[2]  Abel J. P. Gomes,et al.  Real-time simulation of cumulus clouds through skewT/logP diagrams , 2017, Comput. Graph..

[3]  Yoshinori Dobashi,et al.  Modeling of Clouds from a Single Photograph , 2010, Comput. Graph. Forum.

[4]  Yoshinori Dobashi,et al.  A method for modeling clouds based on atmospheric fluid dynamics , 2001, Proceedings Ninth Pacific Conference on Computer Graphics and Applications. Pacific Graphics 2001.

[5]  Kazufumi Kaneda,et al.  A simple, efficient method for realistic animation of clouds , 2000, SIGGRAPH.

[6]  Marie-Paule Cani,et al.  Authoring landscapes by combining ecosystem and terrain erosion simulation , 2017, ACM Trans. Graph..

[7]  R. O G E,et al.  Interactions between the atmosphere and terrestrial ecosystems : influence on weather and climate , 1998 .

[8]  Yoshinori Dobashi,et al.  Display of clouds taking into account multiple anisotropic scattering and sky light , 1996, SIGGRAPH.

[9]  Chen Wei,et al.  Interactive 3D cloud modelling with a brush painting interface , 2014, I3D '14.

[10]  Nancy Argüelles,et al.  Author ' s , 2008 .

[11]  Markus H. Gross,et al.  Deep Scattering: Rendering Atmospheric Clouds with Radiance-Predicting Neural Networks , 2017, ArXiv.

[12]  Fabrice Neyret,et al.  Modeling clouds shape , 2004, Eurographics.

[13]  Yoshinori Dobashi,et al.  A fast rendering method for clouds illuminated by lightning taking into account multiple scattering , 2007, The Visual Computer.

[14]  R. Carey Atmospheric Science: An Introductory Survey , 1978 .

[15]  Daniel G. Aliaga,et al.  Fast Weather Simulation for Inverse Procedural Design of 3D Urban Models , 2017, ACM Trans. Graph..

[16]  Geoffrey Y. Gardner,et al.  Visual simulation of clouds , 1985, SIGGRAPH.

[17]  Jimy Dudhia,et al.  A Description of the Advanced Research WRF Model Version 4 , 2019 .

[18]  Adam Runions,et al.  Sketch Based Volumetric Clouds , 2010, Smart Graphics.

[19]  Chung-Ming Wang,et al.  An Effective Framework for Cloud Modeling, Rendering, and Morphing , 2011, J. Inf. Sci. Eng..

[20]  Sergei Vassilvitskii,et al.  k-means++: the advantages of careful seeding , 2007, SODA '07.

[21]  D. Randall,et al.  100 Years of Earth System Model Development , 2019, Meteorological Monographs.

[22]  Ares Lagae,et al.  A Survey of Procedural Noise Functions , 2010, Comput. Graph. Forum.

[23]  Kei Iwasaki,et al.  Visual simulation of clouds , 2017, Vis. Informatics.

[24]  Qinping Zhao,et al.  Modelling Cumulus Cloud Shape from a Single Image , 2014, Comput. Graph. Forum.

[25]  Fabrice Neyret,et al.  Qualitative Simulation of Cloud Formation and Evolution , 1997 .

[26]  Marie-Paule Cani,et al.  Rapid sketch modeling of clouds , 2008, SBM'08.

[27]  Yoshinori Dobashi A Controllable Method for Animation of Earth-scale Clouds , 2006 .

[28]  Yoshinori Dobashi,et al.  Adaptive cloud simulation using position based fluids , 2015, Comput. Animat. Virtual Worlds.

[29]  Sylvain Lefebvre,et al.  Real-time Realistic Illumination and Shading of Stratiform Clouds , 2006, NPH.

[30]  Marie-Paule Cani,et al.  EcoBrush: Interactive Control of Visually Consistent Large‐Scale Ecosystems , 2017, Comput. Graph. Forum.

[31]  Charlie C. L. Wang,et al.  Ellipsoidal-blob approximation of 3D models and its applications , 2007, Comput. Graph..

[32]  Eric Galin,et al.  Procedural Cloudscapes , 2018, Comput. Graph. Forum.

[33]  Abel J. P. Gomes,et al.  Real-time simulation of cumulus clouds through SkewT/LogP diagrams , 2017, Comput. Graph..

[34]  Yoshinori Dobashi,et al.  Simulation of Cumuliform Clouds Based on Computational Fluid Dynamics , 2002, Eurographics.

[35]  David S. Ebert,et al.  A real-time cloud modeling, rendering, and animation system , 2003, SCA '03.

[36]  G AliagaDaniel,et al.  Fast Weather Simulation for Inverse Procedural Design of 3D Urban Models , 2017 .

[37]  Anselmo Lastra,et al.  Simulation of cloud dynamics on graphics hardware , 2003, HWWS '03.

[38]  Prashant Goswami,et al.  Real-time Landscape-size Convective Clouds Simulation and Rendering , 2016, VRIPHYS.

[39]  Charlie C. L. Wang,et al.  Target Shape Controlled Cloud Animation , 2006, Computer Graphics International.

[40]  Fabrice Neyret,et al.  Qualitative Simulation of Convective Cloud Formation and Evolution , 1997, Computer Animation and Simulation.