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SourceAFIS is currently the best open-source automatic fingerprint identification system (AFIS) available. However the main implementation is written in C# with a focus on the .NET framework. To make SourceAFIS faster and more versatile SimPrints and RedGate (A.K.A SimGate) created an open source port of the code base in C called libAFIS. Being in C this version is platform independent allowing it to run on almost any device, from embedded targets to Android. This will enable mobile health to reach millions of people around the world.
libAFIS has two parts, an Extractor and a Matcher. The Extractor is by far the more complex of the two. It's purpose is to transform an image of a fingerprint into an ISO standard fingerprint template. It does this in a number of steps:
