Human Recognition in Unconstrained Environments provides a unique picture of the complete ‘in-the-wild’ biometric recognition processing chain; from data acquisition through to detection, segmentation, encoding, and matching reactions against security incidents.
Coverage includes:
- Data hardware architecture fundamentals
- Background subtraction of humans in outdoor scenes
- Camera synchronization
- Biometric traits: Real-time detection and data segmentation
- Biometric traits: Feature encoding / matching
- Fusion at different levels
- Reaction against security incidents
- Ethical issues in non-cooperative biometric recognition in public spaces
With this book readers will learn how to:
- Use computer vision, pattern recognition and machine learning methods for biometric recognition in real-world, real-time settings, especially those related to forensics and security
- Choose the most suited biometric traits and recognition methods for uncontrolled settings
- Evaluate the performance of a biometric system on real world data
Author(s): Maria De Marsico, Michele Nappi, Hugo Pedro Proença
Publisher: Academic Press
Year: 2017
Language: English
Pages: 249
City: London
Front Cover
Human Recognition in Unconstrained Environments
Copyright
Contents
Contributors
Editor Biographies
Foreword
1 Unconstrained Data Acquisition Frameworks and Protocols
1.1 Introduction
1.2 Unconstrained Biometric Data Acquisition Modalities
1.3 Typical Challenges
1.3.1 Optical Constraints
1.3.2 Non-comprehensive View of the Scene
1.3.3 Out-of-Focus
1.3.4 Calibration of Multi-camera Systems
1.4 Unconstrained Biometric Data Acquisition Systems
1.4.1 Low Resolutions Systems
1.4.2 PTZ-Based Systems
1.4.3 Face
1.5 Conclusions
References
2 Face Recognition Using an Outdoor Camera Network
2.1 Introduction
2.2 Taxonomy of Camera Networks
2.2.1 Static Camera Networks
2.2.2 Active Camera Networks
2.2.3 Characteristics of Camera Networks
2.3 Face Association in Camera Networks
2.3.1 Face-to-Face Association
2.3.2 Face-to-Person Association
2.4 Face Recognition in Outdoor Environment
2.4.1 Robust Descriptors for Face Recognition
2.4.2 Video-Based Face Recognition
2.4.3 Multi-view and 3D Face Recognition
2.4.4 Face Recognition with Context Information
2.4.5 Incremental Learning of Face Recognition
2.5 Outdoor Camera Systems
2.5.1 Static Camera Approach
2.5.2 Single PTZ Camera Approach
2.5.3 Master and Slave Camera Approach
2.5.4 Distributed Active Camera Networks
2.6 Remaining Challenges and Emerging Techniques
2.7 Conclusions
References
3 Real Time 3D Face-Ear Recognition on Mobile Devices: New Scenarios for 3D Biometrics "in-the-Wild"
3.1 Introduction
3.2 3D Capture of Face and Ear: CURRENT Methods and Suitable Options
3.2.1 Laser Scanners
3.2.2 Structured Light Scanners
3.2.3 Stereophotogrammetry
3.3 Mobile Devices for Ubiquitous Face-Ear Recognition
3.4 The Next Step: Mobile Devices for 3D Sensing Aiming at 3D Biometric Applications
3.5 Conclusions and Future Scenarios
References
4 A Multiscale Sequential Fusion Approach for Handling Pupil Dilation in Iris Recognition
4.1 Introduction
4.1.1 Pupil Dilation
4.1.2 Layout
4.2 Previous Work
4.2.1 Pupil Dilation
4.2.2 Bit Matching
4.3 WVU Pupil Light Reflex (PLR) Dataset
4.4 Impact of Pupil Dilation
4.5 Proposed Method
4.5.1 IrisCode Generation
4.5.2 Typical IrisCode Matcher
4.5.3 Multi-filter Matching Patterns
4.5.4 Proposed IrisCode Matcher
4.6 Experimental Results
4.7 Conclusions and Future Work
References
5 Iris Recognition on Mobile Devices Using Near-Infrared Images
5.1 Introduction
5.2 Preprocessing
5.3 Feature Analysis
5.4 Multimodal Biometrics
5.5 Conclusions
References
6 Fingerphoto Authentication Using Smartphone Camera Captured Under Varying Environmental Conditions
6.1 Introduction
6.2 Literature Survey
6.3 IIITD SmartPhone Fingerphoto Database v1
6.3.1 Set 1: Background Variation
6.3.2 Set 2: Illumination Variation
6.3.3 Set 3: Live-Scan Fingerprints
6.4 Proposed Fingerphoto Matching Algorithm
6.4.1 Fingerphoto Segmentation
6.4.2 Fingerphoto Enhancement (Enh#1)
6.4.3 LBP Based Enhancement (Enh#2)
6.4.4 Scattering Network Based Feature Representation
6.4.5 Matching Techniques
6.5 Experimental Results
6.5.1 Performance of the Proposed Matching Pipeline
6.5.2 Comparison of Matching Algorithms
6.5.3 Comparison of Distance Metrics
6.5.4 Effect of Enhancement
6.6 Conclusion
6.7 Future Work
Acknowledgements
References
7 Soft Biometric Attributes in the Wild: Case Study on Gender Classification
7.1 Introduction
7.2 Biometrics in the Wild
7.3 Gender Classification in the Wild
7.3.1 Datasets
7.3.2 Proposals Summary
7.3.3 Discussion
7.4 Conclusions
References
8 Gait Recognition: The Wearable Solution
8.1 Machine Vision Approach
8.2 Floor Sensor Approach
8.3 Wearable Sensor Approach
8.3.1 The Accelerometer Sensor
8.4 Datasets Available for Experiments
8.5 An Example of a Complete System for Gait Recognition
8.6 Conclusions
References
9 Biometric Authentication to Access Controlled Areas Through Eye Tracking
9.1 Introduction
9.2 ATM-Like Solutions
9.3 Methods Based on Fixation and Scanpath Analysis
9.4 Methods Based on Eye/Gaze Velocity
9.5 Methods Based on Pupil Size
9.6 Methods Based on Oculomotor Features
9.7 Methods Based on Head Orientation
9.8 Conclusions
References
10 Noncooperative Biometrics: Cross-Jurisdictional Concerns
10.1 Introduction
10.2 Biometrics for Implementing Biometric Surveillance
10.3 Reaction to Public Opinion
10.3.1 Geopolitical Context
10.3.2 Technological Skills
10.3.3 Proportionality
10.3.4 A Particular Operational Framework
10.4 The Early Days
10.4.1 Commercial Context
10.4.2 Historical Context
10.4.3 Social Context, the Newham and Ybor City Experiments
10.5 An Interesting Clue (2007)
10.6 Biometric Surveillance Today
10.6.1 Increased Perception of Insecurity
10.6.2 Getting Used to the Erosion of Privacy
10.6.3 Increase of Mobility
10.7 Conclusions
References
Index
Back Cover
