Presentation is loading. Please wait.

Presentation is loading. Please wait.

Johnny Lee, Scott Hudson, Paul Dietz Carnegie Mellon University Mitsubishi Electric Research Labs UIST 2007 – Newport, RI Hybrid Infrared and Visible Light.

Similar presentations


Presentation on theme: "Johnny Lee, Scott Hudson, Paul Dietz Carnegie Mellon University Mitsubishi Electric Research Labs UIST 2007 – Newport, RI Hybrid Infrared and Visible Light."— Presentation transcript:

1 Johnny Lee, Scott Hudson, Paul Dietz Carnegie Mellon University Mitsubishi Electric Research Labs UIST 2007 – Newport, RI Hybrid Infrared and Visible Light Projection for Location Tracking

2 Hybrid Projection infraredvisibleone projector But, why?

3 Projector-Based Location Discovery [Lee, UIST04] Light sensors Electronics & computer Projector

4 Projector-Based Location Discovery calibration free: - no computer vision - no alignment - no manual input Scalable and robust

5 Moveable Surfaces [Lee, UIST 2005] - calibration free - no external tracker - interactive content

6 Drawbacks Location Discovery [04] Moveable Surfaces [05] Caustic B&W patterns Momentary movement Incremental tracking

7 Ideally Full-screen Location Patterns Full-screen Application Content

8 Hybrid Projection infraredvisible for the computerfor the human one projector

9 Infrared & Visible Projection Infrared Visible 9

10 Infrared & Visible Projection Infrared Visible 10

11 Infrared & Visible Projection Infrared Visible 11

12 Infrared & Visible Projection Infrared Visible 12

13 Infrared & Visible Projection Infrared Visible 13

14 Infrared & Visible Projection Infrared Visible 14

15 Infrared & Visible Projection Infrared Visible 15

16 Infrared & Visible Projection Infrared Visible 16

17 Infrared & Visible Projection Infrared Visible 17

18 Infrared & Visible Projection Infrared Visible 18

19 How?

20 Light Source: Lamps Xenon Arc Lamp

21 Light Technologies

22 More Efficient and Better Lifespan Products emerging on market this year, 2007

23 IR and Visible Light LEDs1000 LEDs/mm 2 University of Strathclyde, Institute of Photonics

24 DMD LED Array Lens Projection optics

25 Our Dev Kit: 180 binary images/s High-Speed Dev Kit: 16,500 binary images/s Production Unit: +50,000 binary images/s 1024x768 area = 20 binary images 60Hz tracking = 2.4% duty cycle of production DMD Required changes to commercial designs would be minimal.

26 Demo of Capability Uses a second projector for visible content

27 Inherent Multi-Stylus Tracking

28 Non-Planar and Discontinuous Surfaces

29 Static IR Patterns

30 Concept Applications Simulated using external tracking (calibration)

31 [Siggraph 2004] Hand-held projection with photosensitive tags

32 Foldable Interactive Displays [submitted to CHI]

33 Acknowledgements Johnny Chung Lee Funded in part by the National Science Foundation under grants IIS and IIS Funded in part by Mitsubishi Electric Research Labs

34 Other ways to make invisible patterns Other non-visible wavelengths Steganography –Color shifting –Noise encoding Bit Timing –Synchronization may be difficult

35 Camera-Based Tracking Requires calibration Requires markers for segmentation –IR sensors + transmitter is less power than 4 IR LEDs Does not provide ID Limitation on the number of points Limitation on tracking rate Limitation on scene/target complexity Resolution is not as scalable Less optically robust –Optical path geometry and variable illumination

36 Projector vs Camera Tracking Sensors provide point ID Independent of scene/surface complexity

37 Space-Labeling Projectors 11 Infrared LED slide projectors Potentially Low-cost Per axis: 500Hz tracking at 10-bits Outdoor motion tracking 37

38 Binary Gray

39 Binary Gray

40 Binary Gray

41

42

43

44

45

46

47

48

49

50

51

52 Pixart Chip 1024x768 resolution 100Hz tracking 4 points Only 4 points High power LED points


Download ppt "Johnny Lee, Scott Hudson, Paul Dietz Carnegie Mellon University Mitsubishi Electric Research Labs UIST 2007 – Newport, RI Hybrid Infrared and Visible Light."

Similar presentations


Ads by Google