The directional Gabor filter approach is one of the most effective techniques for fingerprint image enhancement

but it cost too much time.In this paper

an improve algorithm for the fingerprints enhancement based on non-coherence factor is presented.First

Gabor filter is sensitive to orientation and frequency.To deal with this problem

we use Low-pass filter to improve the accuracy of orientation image.Second

we propose to use non-coherence factor to choose which block need to used Gabor filters with 8-quanti...