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Is there any heuristic to polygonize a closed 2D raster shape with n triangles?
I want to be able to analyze a texture in real time and approximate a polygon to represent a silhouette. Imagine a person standing in front of a green screen and I want to approximately trace around their outline and get a 2D polygon as the result. Are there algorithms to do this and are they fast enough to work frame-to-frame in a game?
(I have found algorithms to triangulate polygons, but I am having trouble knowing what to search for that describes my goal.)
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