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University of São Paulo Institute of Mathematics and Statistics Department of Computer Science

University of São Paulo Institute of Mathematics and Statistics Department of Computer Science Locating and Tracking Facial Landmarks with Gabor Wavelet Networks. Rogério Schmidt Feris Roberto Marcondes Cesar Junior {rferis,cesar}@ime.usp.br. Outline . Motivation

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University of São Paulo Institute of Mathematics and Statistics Department of Computer Science

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  1. University of São Paulo Institute of Mathematics and Statistics Department of Computer Science Locating and Tracking Facial Landmarks with Gabor Wavelet Networks Rogério Schmidt Feris Roberto Marcondes Cesar Junior {rferis,cesar}@ime.usp.br

  2. Outline • Motivation • Face Representation Using GWNs • Locating and Tracking Facial Landmarks • Experimental Results • Conclusions

  3. Motivation • Face Recognition from Video Sequences • Problem Assumptions

  4. Gabor Wavelet Networks • Wavelet Networks • Mother Wavelet: Odd-Gabor Function

  5. Face Representation Using GWNs

  6. Face Representation Using GWNs Original Image Wavelet Representation Wavelet parameters are chosen from the continuous parameters space !!

  7. Face Representation Using GWNs • Progressive Attention Interest 32, 52, 100 and 320 wavelets • Direct Calculation of Weights

  8. Face Representation Using GWNs • GWN Reparametrization

  9. Face Representation Using GWNs • Superwavelet • Reparametrization

  10. Locating Facial Landmarks • Reparametrization in Different Individuals • Optimization Using a Mean Face (Small Databases) • Locating Facial Landmarks • Yale Face Database

  11. Locating Facial Landmarks

  12. Tracking Facial Landmarks • Reparametrization in each Frame • Overall Face Geometry is Considered • Robustness and Efficiency

  13. Experimental Results • Face Detection • Positioning of Facial Landmarks • Tracking of Face and Facial Landmarks http://www.ime.usp.br/~rferis

  14. Conclusions • Method Efficient and Robust • Limitations • Future Work • Improve Positioning of Facial Landmarks • 3D Wavelet Model

  15. Questions ? Rogério Schmidt Feris rferis@ime.usp.br http://www.ime.usp.br/~rferis

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