ATPDI: a computational definition of fingerprint singular points. (1st January 2012)

• Record Type: Journal Article
• Authors: Liu, Li-Min
• Is Part Of: International journal of information technology and management. Volume 11:Number 1/2(2012)
• Page Start: 92
• Page End: 111
• Publication Date: 2012-01-01
• Subjects: fingerprint -- singular points -- SPs -- singular points definition -- fingerprint alignment; Management information systems -- Periodicals; Information technology -- Periodicals; Management -- Data processing -- Periodicals; 658.403805
• Languages: English
• ISSNs: 1461-4111

Abstract

In this paper, a computational definition of fingerprint singular points based on aligned tri-coloured pixel-wise directional image, called ATPDI, is presented. The traditional descriptive definitions, geometric definition, and ISO/IEC definition are explained in detail with discussion of their advantages and disadvantages. The quality of a singular point definition is measured by three factors: completeness, rotation sensibility, and precision. We used NIST-4 database for experimental tests, and the experimental results show the ATPDI does not leave cases undefined, is rotation insensitive, and can define singular points in a 2 × 2 pixel square with error ranged in one and a half average ridge widths. Experimental results show the ATPDI is a quality definition of singular points and outperform other existing definitions.