Processing a Fingerprint for Fingerprint Matching

摘要

Processing a fingerprint can include determining one or more optimal weights based on ridge flow angles or ridge flow angle differences. Determination of the optimal weight(s) can be based on predicting a ridge flow angle for each cell in a ridge flow map using one or more neighboring cells. The optimal weights may be estimated so as to minimize error between the predicted and actual ridge flow angles. Alternatively, the optimal weight(s) may be determined using a predicted ridge flow angle difference for each cell in a difference map that is based on an actual ridge flow angle difference for one or more neighboring cells. The optimal weights can be estimated to minimize the error between predicted and actual angle differences. Additionally, a correlation penalty may be determined based on an extent of spatial correlation in the ridge flow angle differences in the difference map.

主权项

1. An electronic device, comprising:
a fingerprint recognition device for capturing a fingerprint image; and a processing device operatively connected to the fingerprint recognition device and adapted to determine one or more optimal weights for a difference map or a ridge flow map associated with the captured fingerprint image, wherein the one or more optimal weights are based on data in one or more neighboring cells of the difference map or the ridge flow map.