Fingerprint recognitionFingerprint recognition is also known as "image acquisition". In this part of the process, a user places his or her finger on a scanner. Numerous images of the fingerprint are then captured. It should be noted that during this stage, the goal is to capture images of the center of the fingerprint, which contains many of the unique features. All of the captured images are then converted into black and white images.
The fingerprint is composed of various “ridges” and “valleys” which form the basis for the loops, arches, and swirls that one can easily see on his/her fingertip. The ridges and valleys contain different kinds of breaks and discontinuities. These are called “minutiae”, and it is from these “minutiae” that the unique features are located and determined. There are two types of “minutiae”: