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CWIN17 telford facial recognition demystified - les frost

facial recognition demystified

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CWIN17 telford facial recognition demystified - les frost

  1. 1. Facial Recognition Demystified Telford, 27/09/2017,Les Frost V7
  2. 2. 2Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Introductions  Les Frost  Senior Technical Architect. Capgemini  http://linkedin.com/in/les-frost  https://twitter.com/lesf99
  3. 3. 3Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Agenda • Why is image recognition important? • How we teach computers to recognise images • Deep learning and neural networks explained • Facial recognition is now practical and affordable • Business applications • Building blocks – cloud services, frameworks, data sets, GPUs • Image Recognition hackathon • Conclusions
  4. 4. 4Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Why is image recognition important to business?  Facebook research last year published the results of it’s study into “dog people” and “cat people” using image recognition  As consumers increasingly communicate using image-centric social media platforms, they’re creating a vast new knowledge base about their identities, brand preferences, shopping habits and more that every marketer will be able to learn from  The marketing ramifications of being able to identify non-self-identified cat and dog owners are huge, given the pet food market is worth $24 billion in the U.S.
  5. 5. 5Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 What do you see?
  6. 6. 6Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 What does a computer “see”?
  7. 7. 7Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 How do we teach a computer to understand pictures?  Deep Learning  Convolutional Neural networks
  8. 8. 8Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Deep Learning and Convolutional Neural Networks  Machine learning uses generic algorithms that can tell you something interesting about a set of data without you having to write any custom code.  The same classification algorithm used to recognize handwritten numbers could also be used to classify animals into dogs or cats without changing a line of code.  Deep learning is a subset of machine learning that uses algorithms based on neural networks.  Convolutional Neural Networks (CNN, or ConvNet) is a class of deep neural networks successfully applied to analysing visual imagery and natural language processing.
  9. 9. 9Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 A toy Convolutional Neural Network: X’s and O’s X or OCNN A two-dimensional array of pixels
  10. 10. 10Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 For example CNN X CNN O
  11. 11. 11Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Trickier cases CNN X CNN O
  12. 12. 12Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Deciding is hard ?
  13. 13. 13Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 What computers see ?
  14. 14. 14Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 X -1 -1 -1 -1 X X -1 -1 X X -1 -1 X X -1 -1 -1 -1 X 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 X -1 -1 -1 -1 X X -1 -1 X X -1 -1 X X -1 -1 -1 -1 X -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 What computers see
  15. 15. 15Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Computers are literal x
  16. 16. 16Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 ConvNets match pieces of the image = = =
  17. 17. 17Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 1 -1 1 -1 1 -1 -1 1 -1 1 -1 1 -1 1 -1 1 Features match pieces of the image
  18. 18. 18Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 1 -1 1 -1 1 -1 -1 1 -1 1 -1 1 -1 1 -1 1
  19. 19. 19Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 1 -1 1 -1 1 -1 -1 1 -1 1 -1 1 -1 1 -1 1
  20. 20. 20Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 1 -1 1 -1 1 -1 -1 1 -1 1 -1 1 -1 1 -1 1
  21. 21. 21Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 1 -1 1 -1 1 -1 -1 1 -1 1 -1 1 -1 1 -1 1
  22. 22. 22Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 1 -1 1 -1 1 -1 -1 1 -1 1 -1 1 -1 1 -1 1
  23. 23. 23Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The maths behind the match
  24. 24. 24Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Filtering: The maths behind the match 1. 2. 3. 4.
  25. 25. 25Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The maths behind the match
  26. 26. 26Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  27. 27. 27Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  28. 28. 28Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  29. 29. 29Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 1 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  30. 30. 30Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 1 1 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  31. 31. 31Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 1 1 1 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  32. 32. 32Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 1 1 1 1 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  33. 33. 33Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 1 1 1 1 1 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  34. 34. 34Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 1 1 1 1 1 1 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  35. 35. 35Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 1 1 1 1 1 1 1 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  36. 36. 36Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  37. 37. 37Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  38. 38. 38Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 -1 1 1 1 -1 1 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Filtering: The math behind the match
  39. 39. 39Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 1 -1 1 1 1 -1 1 1 Filtering: The math behind the match 55 1 1 -1 1 1 1 -1 1 1
  40. 40. 40Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Convolution: Trying every possible match 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77
  41. 41. 41Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Convolution: Trying every possible match = 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77
  42. 42. 42Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1 -1 -1 -1 1 -1 -1 -1 1 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 = 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77 -1 -1 1 -1 1 -1 1 -1 -1 1 -1 1 -1 1 -1 1 -1 1 0.33 -0.55 0.11 -0.11 0.11 -0.55 0.33 -0.55 0.55 -0.55 0.33 -0.55 0.55 -0.55 0.11 -0.55 0.55 -0.77 0.55 -0.55 0.11 -0.11 0.33 -0.77 1.00 -0.77 0.33 -0.11 0.11 -0.55 0.55 -0.77 0.55 -0.55 0.11 -0.55 0.55 -0.55 0.33 -0.55 0.55 -0.55 0.33 -0.55 0.11 -0.11 0.11 -0.55 0.33 = = -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
  43. 43. 43Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Convolution layer 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 1 -1 -1 -1 1 -1 -1 -1 1 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77 -1 -1 1 -1 1 -1 1 -1 -1 1 -1 1 -1 1 -1 1 -1 1 0.33 -0.55 0.11 -0.11 0.11 -0.55 0.33 -0.55 0.55 -0.55 0.33 -0.55 0.55 -0.55 0.11 -0.55 0.55 -0.77 0.55 -0.55 0.11 -0.11 0.33 -0.77 1.00 -0.77 0.33 -0.11 0.11 -0.55 0.55 -0.77 0.55 -0.55 0.11 -0.55 0.55 -0.55 0.33 -0.55 0.55 -0.55 0.33 -0.55 0.11 -0.11 0.11 -0.55 0.33 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
  44. 44. 44Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Pooling: Shrinking the image stack 1. 2. 3. 4.
  45. 45. 45Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1.00 Pooling 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77
  46. 46. 46Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1.00 0.33 Pooling 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77
  47. 47. 47Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1.00 0.33 0.55 Pooling 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77
  48. 48. 48Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1.00 0.33 0.55 0.33 Pooling 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77
  49. 49. 49Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1.00 0.33 0.55 0.33 0.33 Pooling 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77
  50. 50. 50Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1.00 0.33 0.55 0.33 0.33 1.00 0.33 0.55 0.55 0.33 1.00 0.11 0.33 0.55 0.11 0.77 Pooling 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77
  51. 51. 51Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 1.00 0.33 0.55 0.33 0.33 1.00 0.33 0.55 0.55 0.33 1.00 0.11 0.33 0.55 0.11 0.77 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77 0.33 -0.55 0.11 -0.11 0.11 -0.55 0.33 -0.55 0.55 -0.55 0.33 -0.55 0.55 -0.55 0.11 -0.55 0.55 -0.77 0.55 -0.55 0.11 -0.11 0.33 -0.77 1.00 -0.77 0.33 -0.11 0.11 -0.55 0.55 -0.77 0.55 -0.55 0.11 -0.55 0.55 -0.55 0.33 -0.55 0.55 -0.55 0.33 -0.55 0.11 -0.11 0.11 -0.55 0.33 0.33 0.55 1.00 0.77 0.55 0.55 1.00 0.33 1.00 1.00 0.11 0.55 0.77 0.33 0.55 0.33 0.55 0.33 0.55 0.33 0.33 1.00 0.55 0.11 0.55 0.55 0.55 0.11 0.33 0.11 0.11 0.33
  52. 52. 52Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Pooling layer 1.00 0.33 0.55 0.33 0.33 1.00 0.33 0.55 0.55 0.33 1.00 0.11 0.33 0.55 0.11 0.77 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77 0.33 -0.55 0.11 -0.11 0.11 -0.55 0.33 -0.55 0.55 -0.55 0.33 -0.55 0.55 -0.55 0.11 -0.55 0.55 -0.77 0.55 -0.55 0.11 -0.11 0.33 -0.77 1.00 -0.77 0.33 -0.11 0.11 -0.55 0.55 -0.77 0.55 -0.55 0.11 -0.55 0.55 -0.55 0.33 -0.55 0.55 -0.55 0.33 -0.55 0.11 -0.11 0.11 -0.55 0.33 0.33 0.55 1.00 0.77 0.55 0.55 1.00 0.33 1.00 1.00 0.11 0.55 0.77 0.33 0.55 0.33 0.55 0.33 0.55 0.33 0.33 1.00 0.55 0.11 0.55 0.55 0.55 0.11 0.33 0.11 0.11 0.33
  53. 53. 53Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Normalization
  54. 54. 54Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Rectified Linear Units (ReLUs) 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77 0.77
  55. 55. 55Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 0.77 0 Rectified Linear Units (ReLUs) 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77
  56. 56. 56Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 0.77 0 0.11 0.33 0.55 0 0.33 Rectified Linear Units (ReLUs) 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77
  57. 57. 57Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 0.77 0 0.11 0.33 0.55 0 0.33 0 1.00 0 0.33 0 0.11 0 0.11 0 1.00 0 0.11 0 0.55 0.33 0.33 0 0.55 0 0.33 0.33 0.55 0 0.11 0 1.00 0 0.11 0 0.11 0 0.33 0 1.00 0 0.33 0 0.55 0.33 0.11 0 0.77 Rectified Linear Units (ReLUs) 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77
  58. 58. 58Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 ReLU layer 0.77 0 0.11 0.33 0.55 0 0.33 0 1.00 0 0.33 0 0.11 0 0.11 0 1.00 0 0.11 0 0.55 0.33 0.33 0 0.55 0 0.33 0.33 0.55 0 0.11 0 1.00 0 0.11 0 0.11 0 0.33 0 1.00 0 0.33 0 0.55 0.33 0.11 0 0.77 0.33 0 0.11 0 0.11 0 0.33 0 0.55 0 0.33 0 0.55 0 0.11 0 0.55 0 0.55 0 0.11 0 0.33 0 1.00 0 0.33 0 0.11 0 0.55 0 0.55 0 0.11 0 0.55 0 0.33 0 0.55 0 0.33 0 0.11 0 0.11 0 0.33 0.33 0 0.55 0.33 0.11 0 0.77 0 0.11 0 0.33 0 1.00 0 0.55 0 0.11 0 1.00 0 0.11 0.33 0.33 0 0.55 0 0.33 0.33 0.11 0 1.00 0 0.11 0 0.55 0 1.00 0 0.33 0 0.11 0 0.77 0 0.11 0.33 0.55 0 0.33 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 0.77 -0.11 0.11 0.33 0.55 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.11 -0.11 0.11 -0.11 1.00 -0.33 0.11 -0.11 0.55 0.33 0.33 -0.33 0.55 -0.33 0.33 0.33 0.55 -0.11 0.11 -0.33 1.00 -0.11 0.11 -0.11 0.11 -0.11 0.33 -0.11 1.00 -0.11 0.33 -0.11 0.55 0.33 0.11 -0.11 0.77 0.33 -0.55 0.11 -0.11 0.11 -0.55 0.33 -0.55 0.55 -0.55 0.33 -0.55 0.55 -0.55 0.11 -0.55 0.55 -0.77 0.55 -0.55 0.11 -0.11 0.33 -0.77 1.00 -0.77 0.33 -0.11 0.11 -0.55 0.55 -0.77 0.55 -0.55 0.11 -0.55 0.55 -0.55 0.33 -0.55 0.55 -0.55 0.33 -0.55 0.11 -0.11 0.11 -0.55 0.33
  59. 59. 59Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Layers get stacked -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1.00 0.33 0.55 0.33 0.33 1.00 0.33 0.55 0.55 0.33 1.00 0.11 0.33 0.55 0.11 0.77 0.33 0.55 1.00 0.77 0.55 0.55 1.00 0.33 1.00 1.00 0.11 0.55 0.77 0.33 0.55 0.33 0.55 0.33 0.55 0.33 0.33 1.00 0.55 0.11 0.55 0.55 0.55 0.11 0.33 0.11 0.11 0.33
  60. 60. 60Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Deep stacking -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1.00 0.55 0.55 1.00 0.55 1.00 1.00 0.55 1.00 0.55 0.55 0.55
  61. 61. 61Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Fully connected layer 1.00 0.55 0.55 1.00 0.55 1.00 1.00 0.55 1.00 0.55 0.55 0.55 1.00 0.55 0.55 1.00 1.00 0.55 0.55 0.55 0.55 1.00 1.00 0.55
  62. 62. 62Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Fully connected layer X O 1.00 0.55 0.55 1.00 1.00 0.55 0.55 0.55 0.55 1.00 1.00 0.55
  63. 63. 63Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Fully connected layer X O 0.55 1.00 1.00 0.55 0.55 0.55 0.55 0.55 1.00 0.55 0.55 1.00
  64. 64. 64Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Fully connected layer X O 0.9 0.65 0.45 0.87 0.96 0.73 0.23 0.63 0.44 0.89 0.94 0.53
  65. 65. 65Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Fully connected layer X O 0.9 0.65 0.45 0.87 0.96 0.73 0.23 0.63 0.44 0.89 0.94 0.53
  66. 66. 66Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Fully connected layer X O 0.9 0.65 0.45 0.87 0.96 0.73 0.23 0.63 0.44 0.89 0.94 0.53
  67. 67. 67Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Fully connected layer X O 0.9 0.65 0.45 0.87 0.96 0.73 0.23 0.63 0.44 0.89 0.94 0.53
  68. 68. 68Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Fully connected layer X O 0.9 0.65 0.45 0.87 0.96 0.73 0.23 0.63 0.44 0.89 0.94 0.53
  69. 69. 69Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Fully connected layer X O 0.9 0.65 0.45 0.87 0.96 0.73 0.23 0.63 0.44 0.89 0.94 0.53
  70. 70. 70Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Fully connected layer X O 0.9 0.65 0.45 0.87 0.96 0.73 0.23 0.63 0.44 0.89 0.94 0.53
  71. 71. 71Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Putting it all together -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 X O
  72. 72. 72Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Learning
  73. 73. 73Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Backpropagation -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 X O
  74. 74. 74Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Right answer Actual answer Error X 1 O Backprop -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 X O
  75. 75. 75Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Right answer Actual answer Error X 1 0.92 O Backprop -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 X O
  76. 76. 76Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Right answer Actual answer Error X 1 0.92 0.08 O Backprop -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 X O
  77. 77. 77Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Right answer Actual answer Error X 1 0.92 0.08 O 0 0.51 0.49 Backprop -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 X O
  78. 78. 78Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Backprop -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 1 -1 -1 -1 -1 -1 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 X O Right answer Actual answer Error X 1 0.92 0.08 O 0 0.51 0.49 Total 0.57
  79. 79. 79Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Gradient descent weight error
  80. 80. 80Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Gradient descent weight error
  81. 81. 81Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Example training session
  82. 82. 82Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 What does the designer get to decide? • • • • • • • • • • •
  83. 83. 83Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Layers in the CNN progressively recognise faces and objects
  84. 84. 84Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Why have neural networks become practical? • • • • 
  85. 85. 85Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Facial Expression • • •
  86. 86. 86Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Facial Recognition
  87. 87. 87Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Classification of skin cancer
  88. 88. 88Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Plant Disease classification
  89. 89. 89Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Fashion Search
  90. 90. 90Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Distracted Drivers
  91. 91. 91Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Parking Space Detection
  92. 92. 92Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Car Steering
  93. 93. 93Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Building blocks – Cloud Services, Frameworks, Data sets, GPUs • https://www.ibm.com/watson/services/visual-recognition/ • https://aws.amazon.com/rekognition/ • https://www.tensorflow.org/ • https://azure.microsoft.com/en-gb/services/cognitive-services/face/ • https://www.fastcompany.com/40428910/facebooks-image-recognition-tech-is- teaching-40000-images-a-second-to-understand-context • • https://en.wikipedia.org/wiki/List_of_datasets_for_machine_learning_research • • http://www.nvidia.com/object/gpu-cloud-computing.html • https://aws.amazon.com/ec2/elastic-gpus/ • http://cloud.google.com/gpu
  94. 94. 94Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Hackathon Challenge  User Stories: • 1 – Recognise CWIN17 attendees from their photograph • 2 – Recognise objects in images. Knives, guns and cows • 3 – Research solutions to solve the following problems: o Are there any spaces in the car park? o Are you driving safely? o Are you happy with your purchase? o How many cars are passing a point and is there traffic congestion? o That’s a nice watch she’s wearing. What sort is it because I’d like to buy one o Face recognition in streaming video o Predict the steering angle of a self-drive car based on video feed of the road ahead
  95. 95. 95Copyright © 2016 Capgemini and Sogeti. All Rights Reserved. Facial Recognition Demystified | 27/09/2017 Conclusions • • • • •

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