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

2 Electrical and Computer Engineering 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 Electrical and Computer Engineering System Block Diagram

4 Electrical and Computer Engineering 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 Electrical and Computer Engineering Image Processing  Using OpenCV methods  Identifies a IR blob from the pen  Maps blob location to corresponding PC coordinates

6 Electrical and Computer Engineering Speed of Image Processing

7 Electrical and Computer Engineering Communicating with mouse  Windows 7 libraries  Left click  Double click  Click and drag

8 Electrical and Computer Engineering Calibration  Touch four corners of projected screen  Only process set rectangular area  Use corners for higher accuracy  Will compensate for distortion

9 Electrical and Computer Engineering Physical Assembly  Telescoping tripod stand  Adjustment for wall or table projection  Portable

10 Electrical and Computer Engineering What’s Next?  Multitouch gestures  Improve calibration  Finalize physical assembly  Improve pen design  Optimize code to minimize delay  User interface

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

12 Electrical and Computer Engineering Improved Pen Design  Flush mounted push button  Enclosed battery  More compact

13 Electrical and Computer Engineering User Interface  Designed for easy use  Calibration option  Start and stop detection

14 Electrical and Computer Engineering Conclusion  Significant progress since MDR  Major components working  Well on track to finish by FRP DEMO - Solitaire