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L3PT

L3PT. Large Portable Projected Peripheral Touchscreen Team Jackson Brian Gosselin Jr. Greg Langlois Nick Jacek Dmitry Kovalenkov. Comprehensive Design Review. L3PT Overview. Turns PC with Win 7 into an interactive touchscreen Projects computer screen onto a flat surface

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L3PT

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  1. L3PT Large Portable Projected Peripheral Touchscreen Team Jackson Brian Gosselin Jr. Greg Langlois Nick Jacek Dmitry Kovalenkov Comprehensive Design Review

  2. L3PT Overview • Turns PC with Win 7 into an interactive touchscreen • Projects computer screen onto a flat surface • IR emitted blob detected by camera • Combines the positive attributes of tablets and smartboards

  3. System Block Diagram

  4. At MDR… Accomplishments • IR emitting pen • IR longpass filtered camera • Pico projector • Image processing algorithms Action Items • Win 7 driver • System calibration • Physical Assembly

  5. Image Processing • Using OpenCV methods • Identifies a IR blob from the pen • Maps blob location to corresponding PC coordinates

  6. Speed of Image Processing

  7. Communicating with mouse • Windows 7 libraries • Left click • Double click • Click and drag

  8. Calibration • Touch four corners of projected screen • Only process set rectangular area • Use corners for higher accuracy • Will compensate for distortion

  9. Physical Assembly • Telescoping tripod stand • Adjustment for wall or table projection • Portable

  10. What’s Next? • Multitouch gestures • Improve calibration • Finalize physical assembly • Improve pen design • Optimize code to minimize delay • User interface

  11. Multitouch Gestures • Microsoft Developer Network (MSDN) provides libraries for communicating with Windows 7 • Possible Gestures • Zoom • Pan • Rotate • Tap • Press and tap

  12. Improved Pen Design • Flush mounted push button • Enclosed battery • More compact

  13. User Interface • Designed for easy use • Calibration option • Start and stop detection

  14. Conclusion • Significant progress since MDR • Major components working • Well on track to finish by FRP DEMO - Solitaire

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