Ficheiro de 2,82 MB em formato PDF (102 p.).

List of Abbreviations. List of Figures. Executive Summary. Operational Setting of the Study. Chapter 1: The Challenge and the Study’s Approach. 1.1 Introduction. 1.2 The JRC study. 1.2.1 Request from the European Parliament. 1.2.2 The challenge about relevant data. 1.2.3 The data from Portugal. 1.3 Research Methodology. 1.4 Structure of the report. Chapter 2: Existing Knowledge and Related Studies. 2.1 Fingerprint Recognition and its Problem with Children. 2.1.1 Fingerprints. 2.1.2 Recognition process. 2.1.3 Acquisition of fingerprint image. 2.1.4 Image processing. 2.1.5 Feature extraction. 2.1.6 Storing of and comparison with the reference fingerprint(s). 2.1.7 Error rates. 2.1.8 The Case of Children. 2.2 Related Studies. 2.2.1 TNO Study. 2.2.2 BIODEV II. 2.2.3 Ultra-Scan/NIJ Study.2.2.4 U Göttingen/ BKA Study. 2.3 Summary conclusion from pre-existing information. Chapter 3: The Data Source. 3.1 Child Fingerprints from Portugal. 3.2 The Structure of the Data. 3.3 Quality of the Data. Chapter 4: Analysis of the Individual Recognition Steps. 4.1 Fingerprint Recognition Algorithms. 4.1.1 Used matchers. 4.1.2 Results with NIST’s bozorth3. 4.1.3 Results with Vendor 1. 4.1.4 Results with Vendor 2. 4.1.5 Relation between Image Quality Scores and Recognition Rate. 4.2 Image Acquisition.4.2.1 General observations. 4.2.2 Quantification of distortion. 4.2.3 Potential impact of distortion. Chapter 5: Analysis of the Growth Effect. Chapter 6: Impact of Acquisition Devices. 6.1 Problems with Optical Fingerprint Scanners. 6.2 Potential Alternative Devices. 6.2.1 Multispectral sensors from Lumidigm. 6.2.2 Touchless sensors from TBS Biometrics. 6.2.3 New Guardian from Cross Match. 6.3 Experiments. 6.3.1 Selection of test persons. 6.3.2 Set of experiments. 6.3.3 Results. Chapter 7: Conclusions and Recommendations. 7.1 Conclusions. 7.2 Recommendations. 7.3 Open questions. Appendix 1: Important Concepts Related to Fingerprints. Appendix 2: List of References.