Determination of the orientation of the ridges of a fingerprint

Details Determination of the orientation of the ridges of a fingerprint Determination of the orientation of the ridges of a fingerprint

2003-04-17

2009-10-27

Carter, Aaron W (Department: 2624)

Image analysis

Applications

Personnel identification

C340S005530, C340S005830, C713S186000

Reexamination Certificate

active

07609861

ABSTRACT:
A method and a circuit for determining the orientation of ridges of a digital image representing a fingerprint or the like, including for each image pixel, calculating a quantity taking into account the neighboring pixels in all directions, and of bidirectionally scanning the image line by line.

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