Fingerprint indexing is a key technique in fingerprint identification systems.
This strategy allows us to reduce the search space and the occurrences of false acceptance in databases with great size. This paper presents a new triplet based indexing algorithm which uses a new fingerprint representation,
based on minutia triplets.
This representation is an extension of the triangle set obtained from Delaunay triangu-lation.
Also, a strategy is proposed in order to dismiss bad quality triplets that could affect the accuracy ofthe indexing process.
This proposal shows a good accuracy, even when the fingerprints have bad quality areas.
identification