13-02-2016, 04:08 PM
Abstract
Biometric based authentication and recognition, the science of using physical or behavioral characteristic for identity verification is becoming a security principal in many areas. Their utilization as an authentication and recognition technology has become widespread from door access to electronic commerce. Security is a very important aspect in the biometric system itself. Biometric recognition system includes one of the biometric trait as palmprint, Palmprint recognition has been investigated over last fifteen years. During this period,many different problems related to palmprint recognition and securities in the system have been addressed. This paper provides an overview of palmprint research, describing in capture devices, preprocessing, verification, palmprint -related fusion and measures of security and for protecting users’ privacy and palmprint system. Finally some conclusion and suggestion is offered.
INTRODUCTION
The inner surface of the palm normally contains three flexion creases, secondary creases and ridges. The flexion creases are also called principal lines and secondary creases are called wrinkles. Palmprint research employs either high resolution or low resolution images. High resolution images are suitable for forensic applications such as criminal detection. Low resolution images are more suitable for commercial and civil application such as access control. Most of the research using palm print verification uses low resolution images [2]. In general the high resolution can be 400 dpi or more and low resolution can be 150 dpi or less. Figure 1 shows a part of a high resolution palmprint image and a low resolution palmprint image. One can extract ridges, singular points and minutia points as features from high resolution images while in low resolution images principal lines, wrinkles and textures can be extracted.