The Kinect body tracking pipeline Oliver Williams, Mihai Budiu Microsoft Research, Silicon Valley With slides contributed by Johnny Lee, Jamie Shotton NASA Ames, February 14, 2011 Outline
Hardware overview The body tracking pipeline Learning a classifier from large data Conclusions 2
What is Kinect? 3 ~2000 people Caveat: we only have knowledge about a small part of this process. 4 Input device
5 The Innards Source: iFixit 6 The vision system
RGB camera IR camera IR laser projector Source: iFixit 7
RGB Camera Used for face recognition Face recognition requires training Needs good illumination 8 The audio sensors
4 channel multi-array microphone Time-locked with console to remove game audio 9 Prime Sense Chip Xbox Hardware Engineering dramatically improved upon Prime Sense reference design performance Micron scale tolerances on large components Manufacturing process to yield ~1 device / 1.5 seconds
10 Projected IR pattern 11 Source: www.ros.org Depth computation
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