Interactive Generation of Time-Evolving Snow-Covered Landscaped with Avalanches

Cordonnier, G and Ecormier, P and Galin, E and Gain, J and Benes, B and Cani, M-P (2018) Interactive Generation of Time-Evolving Snow-Covered Landscaped with Avalanches, Computer Graphics Forum (Proceedings of Eurographics 2018), 37, 497-509, Blackwell.

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We introduce a novel method for interactive generation of visually consistent, snow-covered landscapes and provide control of their dynamic evolution over time. Our main contribution is the real-time phenomenological simulation of avalanches and other user-guided events, such as tracks left by Nordic skiing, which can be applied to interactively sculpt the landscape. The terrain is modeled as a height field with additional layers for stable, compacted, unstable, and powdery snow, which behave in combination as a semi-viscous fluid. We incorporate the impact of several phenomena, including sunlight, temperature, prevailing wind direction, and skiing activities. The snow evolution includes snow-melt and snow-drift, which affect stability of the snow mass and the probability of avalanches. A user can shape landscapes and their evolution either with a variety of interactive brushes, or by prescribing events along a winter season time-line. Our optimized GPU-implementation allows interactive updates of snow type and depth across a large (10×10km) terrain, including real-time avalanches, making this suitable for visual assets in computer games. We evaluate our method through perceptual comparison against exiting methods and real snow-depth data.

Item Type: Journal article (paginated)
Subjects: Computing methodologies > Computer graphics
Date Deposited: 09 Nov 2018
Last Modified: 10 Oct 2019 15:31

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