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Journal Articles Computer Graphics Forum Year : 2018

Procedural Cloudscapes

Abstract

We present a phenomenological approach for modeling and animating cloudscapes. We propose a compact procedural model for representing the different types of cloud over a range of altitudes. We define primitive-based field functions that allow the user to control and author the cloud cover over large distances easily. Our approach allows us to animate cloudscapes by morphing: instead of simulating the evolution of clouds using a physically-based simulation, we compute the movement of clouds using key-frame interpolation and tackle the morphing problem as an Optimal Transport problem. The trajectories of the cloud cover primitives are generated by solving an Anisotropic Shortest Path problem with a cost function that takes into account the elevation of the terrain and the parameters of the wind field.
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Dates and versions

hal-01730789 , version 1 (14-03-2018)

Identifiers

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Antoine Webanck, Yann Cortial, Eric Guérin, Eric Galin. Procedural Cloudscapes. Computer Graphics Forum, 2018, 37 (2), pp.431--442. ⟨10.1111/cgf.13373⟩. ⟨hal-01730789⟩
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