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Motion Capture

This document explores advanced motion capture technologies and techniques, emphasizing the balance between costs and performance in the industry. It discusses high-end systems like the Vicon MX40, with a price tag of $220,000, and the various hardware and software components required for effective motion capture. It also highlights new sensing methods such as IR cameras, Leap Motion, MYO wristbands, and WiFi-based technologies. The paper delves into the importance of avoiding occlusion, the need for multiple cameras, and the relevance of real-time processing in creating effective motion capture setups.

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Motion Capture

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  1. Motion Capture Emilio Cantu, Jin He, Gerard Louis, Brian Orchosky, Chelsey Salberg

  2. Challenges and New Techniques • Expense • Hardware • Software • More Sensing Methods

  3. Expense • Very expensive • Vicon • Complete Vicon MX40 Motion Capture System - $220,000

  4. Hardware and software • Hardware • Real time • High frame rate • High bandwidth • Software • Image processing algorithms • Extract the target image from its background

  5. New Methods • IR Camera Based • Leap Motion • Electrical signal based • MYO • Wifi Based • WiSee • Wivi

  6. Leap Motion • Human computer interaction • Hand and finger motion • Smaller observation area and higher resolution • 2 IR cameras and 3 IR LEDs • Provide SDK, C++ • App store - new • https://www.leapmotion.com/

  7. MYO • Wristband • Electrical activity in muscles. • https://www.youtube.com/watch?v=oWu9TFJjHaM • Wirelessly control computer. • Interact with digital world.

  8. Wifi Based Methods • Wisee • From Univ of Washington • Published in MobiCom13 • http://wisee.cs.washington.edu/ • Classify a set of 9 gestures • Achieve 94% accuracy.

  9. Wifi Based Methods • Wivi • From MIT • Published in SIGCOMM13 • Motion Capture Behind Walls • http://people.csail.mit.edu/fadel/wivi/

  10. accad Advanced Computer Center for Arts and Designs

  11. What is need for Motion Capture • Need 8 cameras for performances • Need 3 for props • Must avoid occlusion • Input from cameras into giganet that sends data to computer software processed input

  12. accad • Uses 12 Vicon cameras X 12

  13. accad Motion Capture Studio

  14. Autodesk Motion Builder

  15. Questions?

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