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ECE 533 Final Project

ECE 533 Final Project. SIMPLE FACE RECOGNITION IMPLEMENTATION FOR COMPUTER AUTHENTICATION. Josh Easton - Tin-Yau Lo. Goal. Demonstrate the feasibility of computer authentication using facial recognition algorithms. What is facial recognition?.

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ECE 533 Final Project

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  1. ECE 533 Final Project SIMPLE FACE RECOGNITION IMPLEMENTATION FOR COMPUTER AUTHENTICATION Josh Easton - Tin-Yau Lo

  2. Goal • Demonstrate the feasibility of computer authentication using facial recognition algorithms

  3. What is facial recognition? • Every person’s face has a set of unique characteristics • Some examples are: • Distance between eyes • Location and size of nose • Distance from forehead to chin • Humans are able to easily recognize a face

  4. What is computer-based facial recognition? • Programming a computer to use an algorithm to detect if two faces match

  5. Facial recognition algorithms • Various computer algorithms exist that can be used to recognize faces • Eigenface analysis (AKA Principal Component Analysis) • Hidden Markov Models

  6. Eigenfaces • Computer is trained with several pictures of the same face • Eyes are used as reference point between pictures • Various Eigenvectors are calculated to create a signature of the face

  7. Eigenfaces

  8. Embedded HMM for Face Recognition Model- - Face ROI partition

  9. Face recognition using Hidden Markov Models • One person – one HMM • Stage 1 – Train every HMM • Stage 2 – Recognition Pi - probability Choose max(Pi) 1 … n i

  10. Running the Programs • The distribution came with the directory “FaceRecognitionCap” and “FaceRecognition”.

  11. FaceRecognitionCap • Quicktime Java program, that requires Quicktime 6.1 and a compatible camera that support Quicktime on Windows with a simple recompilation. • It runs out of the box on Mac OS X by double-clicking the “FaceRecognitionCap” Icon. Push “Power” to initialize the Firewire bus, and click “Take Snapshot” to produce a 320x240 greyscale image suitable for “FaceRecognition”. The resultant capture file is “test.jpg”

  12. FaceRecognition • FaceRecognition is the actual face recognition engine. Type the following at the “FaceRecognition” directory : java FaceRecognition trainedimages testing.jpg • A sample running such as the following will be produced : kenneth% java FaceRecognition trainedimages testing.jpg Constructing face-spaces from trainedimages ... Comparing testing.jpg ... Most closly reseambling: 15.jpg with 2.108734631580217 distance. kenneth%

  13. Conclusion • Facial recognition software is a new, advanced replacement for text passwords • We can look forward to seeing more facial authentication systems in the future

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