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Automated Facial Recognition:

Automated Facial Recognition:. Overview and Applications by Brandon Hume. Human vs. Computer Vision. Computer vision still has a long way to go to match the capabilities of human face recognition. People use non-face features to aid in recognition.

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Automated Facial Recognition:

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  1. Automated Facial Recognition: Overview and Applications by Brandon Hume

  2. Human vs. Computer Vision • Computer vision still has a long way to go to match the capabilities of human face recognition. • People use non-face features to aid in recognition. • Human recognition is biased, and has memory limitations.

  3. Applications • Information Security • Law enforcement • Social / Entertainment • Security and Surveillance

  4. Recognition Steps • Detection and rough normalization of faces • Feature extraction and accurate normalization of faces • Identification and/or verification.

  5. General Pattern Matching Methods • Holistic - use the whole face region as the raw input to a recognition system • Feature-based - use individual features to verify matches • Hybrid - incorporate aspects of both holistic and feature-based recognition.

  6. Algorithms • Principal Component Analysis (PCA) • Linear Discriminant Analysis (LDA) • Iterative Closest Point (ICP) • Eigenfaces - Uses PCA analysis to derive a set of "standardized face ingredients", from statistical analysis of a database of face images

  7. Eigenface images From AT&T Laboratories Cambridge

  8. Lighting / illumination Expression Age Blur Distance Rotation Obstructions (hair, clothing, and glasses) Complications

  9. Expressions

  10. Lighting

  11. Testing • Probability of Detection (Pd) • False Alarm Rate • Missed Alarm Rate

  12. Image Databases • FERET - 14,126 total images • FRVT - Face Recognition Vendor Test 121,589 images

  13. Ethics • Security vs. Privacy • Recent News – Google, Recognizr

  14. Open Source • Colorado State University’s - http://www.cs.colostate.edu/evalfacerec/ • OpenCV - http://code.google.com/p/opencvdotnet/ • EmguCV - http://sourceforge.net/projects/emgucv/files/

  15. Questions??

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