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Raspdrones

Using pattern recognition to make homes a little safer. Raspdrones. What is pattern recognition?. Extract features from data Use features in equations Equations give likelyhood of recognition. The problem. Some people are not welcome in my home Politicians, Tax people, bailiff, salesmen

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Raspdrones

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  1. Using pattern recognition to make homes a little safer Raspdrones

  2. What is pattern recognition? • Extract features from data • Use features in equations • Equations give likelyhood of recognition

  3. The problem • Some people are not welcome in my home • Politicians, Tax people, bailiff, salesmen • I want to keep them out • But how?

  4. Solution • Use pattern recognition • Detect and recognize their face • Interface with some hardware • Finally a great use for the Raspberry • We get to write some code • And even get to solder stuff!

  5. Inspired by the goalkeeper

  6. Shopping list • One raspberry • One usb-interface board (KA8055) • Projectile weapons • Servo-motors • Webcam • Various connectors and electronic components

  7. Prepping the raspberry • Opencv • And required libraries • Compilers • Waiting for the installation to finish... • Add powered usb-hub • And wait some more

  8. Some code • OpenCV • Haar-features to detect faces • Custom code to recognise the faces

  9. Training the recognizer • It watches online videos of course • And classics from my own collection

  10. Extracting the faces • Haar-cascades • Getting thousands of images • Storing them • (Manual) sorting them

  11. Normalize the faces • Detect eyes, nose, mouth, facial edges • Rotate the face to a standard(normalization)

  12. Extract meaningful data • Measuring distances • That's it! • Well, actually we have to store it somewhere • Lots of generic code

  13. Sadly not enough time Setup is there though Recognizing • We do the same steps as before • But now we try to match up the data • If there's a match, we have recognized someone • Almost never exact match

  14. (De-)Soldering • Also not enough time

  15. Connecting it all • Just attach it to the usb-ports • Run the code • And get one frame per 10s • Lowering video quality should improve this

  16. Testing it • Testing on a normal pc/laptop

  17. Problems... • Avoiding friendly fire • Making it cat safe • Make it run faster • Better recognition • Tons of libraries • Friend or Foe?

  18. Presentation & code available next week www.vankoert.org/talks/20130331 awesome cat video: • http://www.youtube.com/watch?v=PXRX47L_3yE OpenCV: • http://opencv.org/

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