Distorted fingerprint matching using pose and minutia grouping

A system comprising:

• one or more processors and one or more storage devices storing instructions that are operable and when executed by the one or more processors, cause the one or more processors to perform operations comprising:
• obtaining search minutiae of a search fingerprint and reference minutiae;
• determining minutiae pairs, each minutiae pair comprising a search minutia of the search minutiae and a reference minutia of the reference minutiae that have a similarity level that satisfies a similarity threshold;
• determining groups of minutiae pairs based on a transformation parameter and topology, the groups comprising a group of merged groups of minutiae pairs and an unmerged group of minutiae pairs;
• and
• performing a first transformation on the merged group of minutiae pairs and a second transformation on the unmerged group of minutiae pairs.

One or more non-transitory computer-readable storage media comprising instructions, which, when executed by one or more processors, cause the one or more processors to perform operations comprising:

• obtaining search minutiae of a search fingerprint and reference minutiae;
• determining minutiae pairs, each minutiae pair comprising a search minutia of the search minutiae and a reference minutia of the reference minutiae that have a similarity level that satisfies a similarity threshold;
• determining groups of minutiae pairs based on a transformation parameter and topology, the groups comprising a group of merged groups of minutiae pairs and an unmerged group of minutiae pairs;
• and
• performing a first transformation on the merged group of minutiae pairs and a second transformation on the unmerged group of minutiae pairs.