Abstract:

Fingerprint image segmentation is a key step in the pre-processing, with the purpose of facilitating the effective extraction
of fingerprint image feature. According to the basic principles of the common fingerprint segmentation process, this paper summarizes
two common segmentation algorithms: methods of information-based approach and the statistical properties of the base direction. On
this basis, this paper proposed segmentation algorithm based on orientation field information and gray feature, the results showed that:
this method can efficiently and reliably segment fingerprint image, and the segmentation effect can meet the fingerprint image preprocessing
purposes.

Key words: image processing, the algorithm of direction, gray feature, fingerprint segmentation