- The level set method is a numerical technique for tracking interfaces and shapes.
- The advantage of the level set method is that one can perform numerical computations involving curves and surfaces on a fixed Cartesian grid without having to parametrize these objects (this is called the Eulerian approach).
- The level set method makes it very easy to follow shapes which change topology, for example when a shape splits in two, develops holes, or the reverse of these operations.
- The level set method is a great tool for modeling time-varying objects, like inflation of an airbag, or a drop of oil floating in water.
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