DartPi Automatic Dart Score Detection using Raspberry Pi Christian Hirsch

Content  Motivation  Development Environment  Approach/Progress  Problems  Videos DartPi – Automatic Dart Score Detection2

Motivation  „Analog“ dart is cooler  Darts can hurt  You see that you‘ve played  Manual counting is annoying  A PC or notebook is too big/expensive  Raspberry Pi is the solution DartPi – Automatic Dart Score Detection3

Development Environment  For Testing:  Open CV 2.4.3, C++  Microsoft Visual Studio 2010  Videos  Final version  RaspberryPi, Raspbian  OpenCV 2.3.?, g++, make  „analog“ Dartboard + 2 Webcams 4DartPi – Automatic Dart Score Detection

Approach/Progress Detect dartboard + markings Detect darts Check whether someone shot a dart or player changed Equip dartboard with webcams Compile the program on Raspbian Count the dart-score  Create a userinterface (?)  Handle user interactions 5DartPi – Automatic Dart Score Detection

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Would be nice but … DartPi – Automatic Dart Score Detection7

… not possible  DartPi – Automatic Dart Score Detection8

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Possible … DartPi – Automatic Dart Score Detection10

Dart Detection - Process  Initialize background model  for each camera  Check if something changes  small changes in short time -> dart  big changes, long time -> change  anyting else -> error  Get dartboard + dart contours  calculate position  calculate points  Return points DartPi – Automatic Dart Score Detection11

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Real Problems  GLS  Webcams  no wideangle  Raspberry Pi performance  Image resolution of 320x240 px used  Errors  Maybe one webcam does not work correctly 13DartPi – Automatic Dart Score Detection

Thank you & good night Questions?