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SDFs and the Fast sweeping algorithm in Jax
Talking about the Fast Sweeping Method for solving solutions to the Eikonal equation efficiently
In fact, for most complex problems involving the level set technique, designing an appropriate propagation speed is crucial, as mentioned in Sethian's book. The spatial derivative is approximated by a Godunov upwind difference scheme, which is sensitive to the direction of information flow, something crucial in this problem. However, when working with custom FSM approaches for domain-specific problems, I'd trade the speed of skfmm for the ease of hackability and experimentation that I'd get with the python code any day.
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