Design of an Iris Verification System on Embedded Blackfin Processor for Access Control Application Richard Ng Yew Fatt Master of Engineering Science Faculty of Engineering and Science Universiti

ii ACKNOWLEDGEMENTS iii APPROVAL SHEET iv SUBMISSION SHEET v DECLARATION vi LIST OF TABLES x LIST OF FIGURES xi LIST OF ABBREVIATIONS xiii CHAPTER 1.0 INTRODUCTION 1 1.1 Background 1 1.2 Motivation 2 1.3 Scope of Work 3 1.4 Objective 4 1.5 Thesis Outline 5 2.0 LITERATURE REVIEW 7 2.1 Image Preprocessing 7 2.1.1 Iris Localization 8 2.1.1.1 Integro-differential operator 8 2.1.1.2 Hough Transform 8 2.1.1.3 Discrete Circular Active Contour 9 2.1.1.4 Bisection Method 10 2.1.1.5 Black Hole Search Method 10 2.1.2 Eyelid Detection 11 2.1.3 Eyelashes Detection 12 2.1.4 Iris Normalization 12 2.1.5 Image Enhancement 13 2.2 Feature Extraction 14 2.2.1 Gabor Filters 14 2.2.2 Wavelet Transform 17 2.2.3 Laplacian of Gaussian Filter 17 2.2.4 Key Local Variation 18 2.2.5 Discrete Cosine Transform 18 2.2.6 Advanced Correlation Filter 19 2.3 Template Matching 20 2.3.1 Hamming Distance 20 2.3.2 Weighted Euclidean Distance 21