| 摘要 |
<p>A device and method for matching fingerprints and granting or denying access is disclosed. Fingerprints of each potential user are captured by a fingerprint sensor, processed and saved in the device memory. Each fingerprint is converted to a digital image, all fingerprints ridges are thinned and all features except bifurcation points are deleted. The system generates templates of bifurcation points for each person to be enrolled, the template including the coordinates for each bifurcation point and stores the templates in a memory. When a user activates the system by placing his finger on the fingerprint sensor, the system captures the image, digitizes it and determines the coordinates of the bifurcation points. If the match meets the required criteria the user is allowed access. The processing time takes 300 msec or less.</p> |
