Touchless Fingerprint Biometrics

Chapter 5

Touchless Fingerprint

Recognition

This chapter presents methods for touchless fingerprint biometrics. An important

characteristic of these approaches is the lack of finger placement guides, which

reduces the acquisition constraints compared with most touchless fingerprint recog-

nition systems described in the literature. To minimize the level of user cooperation

required, all studied approaches are based on images captured in a single instant.

The researched approaches can be divided into methods based on two-

dimensional and three-dimensional samples. The first class of techniques is

designed for low-cost and portable applications. Although