An adaptive near-infrared illuminator for outdoor face recognition.

• Other Authors: Cheung, Siu Ming.
• Format: Others
• Language: English; Chinese
• Published: 2010
• Subjects: Human face recognition (Computer science); Infrared technology; Infrared imaging; Illuminators
• Online Access: http://library.cuhk.edu.hk/record=b5894297; http://repository.lib.cuhk.edu.hk/en/item/cuhk-327035

Cheung, Siu Ming. === Thesis (M.Phil.)--Chinese University of Hong Kong, 2010. === Includes bibliographical references (leaves 81-86). === Abstracts in English and Chinese. === Chapter 1. --- INTRODUCTION --- p.1 === Chapter 1.1. --- Introduction to Face Recognition --- p.2 === Chapter 1.1.1. --- Modes of Face Recognition --- p.2 === Chapter 1.1.2. --- Typical Face Recognition System --- p.3 === Chapter 1.1.3. --- Face Recognition Algorithms --- p.4 === Chapter 1.1.4. --- The State of the Art --- p.5 === Chapter 1.2. --- Outdoor Face Recognition --- p.6 === Chapter 1.2.1. --- The Outdoor Environment --- p.6 === Chapter 1.2.2. --- The Illumination Variation Problem in the Outdoors --- p.8 === Chapter 1.3. --- Related works --- p.10 === Chapter 1.3.1. --- Face Appearance Modeling --- p.10 === Chapter 1.3.2. --- Illumination Invariant Features and Representations --- p.13 === Chapter 1.3.3. --- Active Near-Infrared Illumination --- p.14 === Chapter 1.4. --- Proposed method --- p.17 === Chapter 1.5. --- Design Requirements --- p.18 === Chapter 2. --- COMPENSATION METHODOLOGY FOR OUTDOOR FACE RECOGNITION --- p.20 === Chapter 2.1. --- Illumination from the Sun --- p.21 === Chapter 2.2. --- Effect of Sunlight Illumination --- p.22 === Chapter 2.3. --- A Compensation Model --- p.24 === Chapter 2.4. --- A Face Lighting Simulator --- p.28 === Chapter 2.4.1. --- Face 3D Models --- p.29 === Chapter 2.4.2. --- Light Sources --- p.30 === Chapter 2.4.3. --- Synthesis of Face Image --- p.31 === Chapter 2.5. --- Simulation Results --- p.32 === Chapter 2.5.1. --- Optimum Compensation Angles --- p.33 === Chapter 2.5.2. --- Effect of Illuminator Intensity --- p.36 === Chapter 2.5.3. --- Effect of Illuminator Elevation Angle --- p.38 === Chapter 2.5.4. --- Effect of Sunlight Elevation Angle --- p.41 === Chapter 2.5.5. --- Illumination from Both Sides --- p.42 === Chapter 2.6. --- Summary --- p.43 === Chapter 3. --- AN ADAPTIVE ILLUMINATOR --- p.45 === Chapter 3.1. --- Hardware Design --- p.45 === Chapter 3.1.1. --- Near-infrared Camera --- p.45 === Chapter 3.1.2. --- Illumination Panels --- p.48 === Chapter 3.1.3. --- Illuminator Controller --- p.56 === Chapter 3.1.4. --- Illumination Characteristics --- p.59 === Chapter 3.2. --- Algorithms --- p.62 === Chapter 3.2.1. --- Light Balance Estimation --- p.63 === Chapter 4. --- EXPERIMENTS AND RESULTS --- p.67 === Chapter 4.1. --- Effect of compensation angle on face similarity --- p.68 === Chapter 4.2. --- Effect of illumination compensation under different sunlight conditions --- p.71 === Chapter 4.3. --- Impact on recognition performance --- p.72 === Chapter 5. --- CONCLUSIONS --- p.76 === Chapter 6. --- BIBLIOGRAPHY --- p.81