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Liquid Surface Tracking with Error Compensation
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DOI：10.1145/2461912.2461991.png)
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摘要
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Our work concerns the combination of an Eulerian liquid simulation with a high-resolution surface tracker (e.g. the level set method or a Lagrangian triangle mesh). The naive application of a high-resolution surface tracker to a low-resolution velocity field can produce many visually disturbing physical and topological artifacts that limit their use in practice. We address these problems by defining an error function which compares the current state of the surface tracker to the set of physically valid surface states. By reducing this error with a gradient descent technique, we introduce a novel physics-based surface fairing method. Similarly, by treating this error function as a potential energy, we derive a new surface correction force that mimics the vortex sheet equations. We demonstrate our results with both level set and mesh-based surface trackers.
Keyword:
liquid simulation
surface tracking
surface fairing
vortex sheets
level set method
triangle mesh
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9.5
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4.8K
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3.6W
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