VALID FINGER AREA AND QUALITY ESTIMATION FOR FINGERPRINT IMAGING

摘要

Techniques for fingerprint quality assessment are presented. In some embodiments, a fingerprint image is subdivided into a plurality of sub-images. An orientation and a frequency associated with fingerprint ridges or valleys can be determined for each sub-image. A model can be generated for each sub-image and then compared to each sub-image. Based on the comparing, a quality assessment can be determined for each of the sub-images.

主权项

1. A device, comprising:
a processor configured to:
obtain an image of a fingerprint;subdivide the image into a plurality of sub-images;determine an orientation of ridges or valleys of the fingerprint within sub-images of the plurality of sub-images;determine a frequency associated with spacing of the ridges or valleys of the fingerprint within the sub-images of the plurality of sub-images;generate one or more models, each based on the orientation and the frequency of each sub-image of the sub-images;compare each of the one or more models with a corresponding sub-image of the sub-images;determine, based on the comparing, a quality assessment of the image of the fingerprint; andmodify a function of the device based on the determining the quality assessment.