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PRESENTATION ON:
KINECT A.K.A PROJECT NATAL
• Kinect (codenamed in development as Project Natal) is
a motion sensing input device by Microsoft for the Xbox
360 video ...
BRIEF HISTORY OF
KINECT
• Kinect was launched in North America on November 4, 2010, in
Europe on November 10, 2010, in Australia, New Zealand and
...
THE TECHNOLOGY
THE WORKING
The Kinect uses structured light and machine learning –
 Inferring body position is a two-stage process: firs...
Structured light general principle:
project a known pattern onto the
scene and infer depth from the
deformation of that pa...
STAGE 1
 The depth map is constructed by analyzing a speckle pattern of infrared laser light.
 The Kinect uses an infrar...
DEPTH FROM FOCUS
Depth from focus uses the principle that stuff that is more blurry is further
away

 The Kinect dramatic...
DEPTH FROM STEREO
 Depth from stereo uses parallax.
 If you look at the scene from another angle, stuff that is close ge...
STAGE 2
INFERRING BODY POSTION
Body parts are inferred using a randomized decision forest, learned
from over 1 million tra...
Stage 2 starts with 100,000 depth images with
known skeletons (from a motion capture system)
THE WORKING
THE MIDDLEWARE
 At this point, both the Kinect’s hardware — its camera
and IR-light projector — and its firmware (sometim...
A SCENE FROM HARRY POTTER GAME ON
KINECT
THE POWER OF KINECT
THE BEST PART OF KINECT
UNLIKE THE
SONY
PLAYSTATION
MOVE OR THE
NINTENDO WII,
KINECT IS
COMPLETELY
CONTROLLER
FREE!!!
CONCLUSION
 Kinect is something different.
 It’s communal, continuous and general: a Natural User
Interface (or NUI) for...
BIBLIOGRAPHY
How Microsoft Kinect Works:
http://electronics.howstuffworks.com/microsoftkinect2.htm


How Motion Detection...
Kinect connect
Kinect connect
Kinect connect
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Kinect connect

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Transcript of "Kinect connect"

  1. 1. PRESENTATION ON: KINECT A.K.A PROJECT NATAL
  2. 2. • Kinect (codenamed in development as Project Natal) is a motion sensing input device by Microsoft for the Xbox 360 video game console and Windows PCs. • Based around a webcam-style add-on peripheral for the Xbox 360 console, it enables users to control and interact with the Xbox 360 without the need to touch a game controller, through a natural user interface using gestures and spoken commands.
  3. 3. BRIEF HISTORY OF KINECT
  4. 4. • Kinect was launched in North America on November 4, 2010, in Europe on November 10, 2010, in Australia, New Zealand and Singapore on November 18, 2010, and in Japan on November 20, 2010. • The Kinect claimed the Guinness World Record of being the "fastest selling consumer electronics device" after selling a total of 8 million units in its first 60 days. 24 million units of the Kinect sensor had been shipped as of January 2012. • Microsoft released Kinect software development kit for Windows 7 on June 16, 2011. This SDK was meant to allow developers to write Kinecting apps in C++/CLI, C#, or Visual Basic .NET.
  5. 5. THE TECHNOLOGY
  6. 6. THE WORKING The Kinect uses structured light and machine learning –  Inferring body position is a two-stage process: first compute a depth map (using structured light), then infer body position (using machine learning).  The results are great!  The system uses many college-level math concepts, and demonstrates the remarkable advances in computer vision in the last 20 years.
  7. 7. Structured light general principle: project a known pattern onto the scene and infer depth from the deformation of that pattern The Kinect uses infrared laser light, with a speckle pattern
  8. 8. STAGE 1  The depth map is constructed by analyzing a speckle pattern of infrared laser light.  The Kinect uses an infrared projector and sensor; it does not use its RGB camera for depth computation.  The technique of analyzing a known pattern is called structured light.  The Kinect combines structured light with two classic computer vision techniques: depth from focus, and depth from stereo.
  9. 9. DEPTH FROM FOCUS Depth from focus uses the principle that stuff that is more blurry is further away  The Kinect dramatically improves the accuracy of traditional depth from focus  The Kinect uses a special (“astigmatic”) lens with different focal length in xand y- directions  A projected circle then becomes an ellipse whose orientation depends on depth
  10. 10. DEPTH FROM STEREO  Depth from stereo uses parallax.  If you look at the scene from another angle, stuff that is close gets shifted to the side more than stuff that is far away.  The Kinect analyzes the shift of the speckle pattern by projecting from one location and observing from another.
  11. 11. STAGE 2 INFERRING BODY POSTION Body parts are inferred using a randomized decision forest, learned from over 1 million training examples
  12. 12. Stage 2 starts with 100,000 depth images with known skeletons (from a motion capture system)
  13. 13. THE WORKING
  14. 14. THE MIDDLEWARE  At this point, both the Kinect’s hardware — its camera and IR-light projector — and its firmware (sometimes called “middleware”) are operating.  The Kinect has an on-board processor which is using algorithms to process the data to render the threedimensional image.  The middleware also can recognize people: distinguishing human body parts, joints and movements, as well as distinguishing individual human faces from one another. When you step in front of it, the camera “knows” who you are.
  15. 15. A SCENE FROM HARRY POTTER GAME ON KINECT
  16. 16. THE POWER OF KINECT
  17. 17. THE BEST PART OF KINECT UNLIKE THE SONY PLAYSTATION MOVE OR THE NINTENDO WII, KINECT IS COMPLETELY CONTROLLER FREE!!!
  18. 18. CONCLUSION  Kinect is something different.  It’s communal, continuous and general: a Natural User Interface (or NUI) for multimedia, rather than a GUI for gaming.  But it takes a lot of tech to make an interface like that come together seamlessly and “naturally.”
  19. 19. BIBLIOGRAPHY How Microsoft Kinect Works: http://electronics.howstuffworks.com/microsoftkinect2.htm  How Motion Detection Works in Xbox Kinect: http://www.wired.com/gadgetlab/2010/11/tonightsrelease-xbox-kinect-how-does-it-work/  Kinect SDK Basic http://channel9.msdn.com/Series/KinectQuickstart/   AND OF COURSE GOOGLE AND WIKIPEDIA!!!
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