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A Surfaceless Pen-Based Interface

A Surfaceless Pen-Based Interface. Student Research Week March 23, 2010 – Texas A&M University. Motivation | Device Design | User Studies | Results | Conclusions. Drawing is a natural form of human interaction…. Motivation | Device Design | User Studies | Results | Conclusions.

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A Surfaceless Pen-Based Interface

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  1. A Surfaceless Pen-Based Interface Student Research Week March 23, 2010 – Texas A&M University

  2. Motivation| Device Design | User Studies | Results | Conclusions Drawing is a natural form of human interaction…

  3. Motivation| Device Design | User Studies | Results | Conclusions Drawing is a natural form of human interaction…

  4. Motivation| Device Design | User Studies | Results | Conclusions In this work we unbind the user from a fixed drawing surface…

  5. Motivation| Device Design | User Studies | Results | Conclusions In this work we unbind the user from a fixed drawing surface…

  6. Motivation | Device Design | User Studies | Results | Conclusions How we designed and implemented this technology… Power and circuitry 00110011 ● Simple off-the-shelf hardware components●Wrote an easy-to-use software program ●Total cost of the system < $35 11111111 CPU Sketch Recognition…

  7. Motivation | Device Design | User Studies | Results | Conclusions How we designed and implemented this technology…

  8. Motivation | Device Design | User Studies | Results | Conclusions Sketch Recognition is the automated understanding of what we draw… ● Allows for freehand sketching of objects●Consists of multiple levels of recognition ●Gesture, feature, or geometric-based

  9. Motivation | Device Design | User Studies | Results | Conclusions Civil Engineering Applications Peschel & Hammond. “STRAT: A Sketch-Truss Recognition and Analysis Tool”. VLC, San Francisco, CA, 2008. Peschel & Hammond ... “A Sketch-Based Interface for Rapid Floodplain Assessment”. AWRA, San Mateo, CA, 2008 (Best Student Award).

  10. Motivation | Device Design | User Studies | Results | Conclusions Military Course-of-Action Symbols Peschel & Hammond. “A Sketch Recognition Interface for Recognizing Free-Hand Course-of-Action Diagrams”. IAAI, Atlanta, GA, 2010. Peschel & Hammond ... “A Sketch Recognition Interface that Recognizes Hundreds of Shapes in Course-of-Action Diagrams”. CHI, Atlanta, GA, 2010.

  11. Motivation | Device Design | User Studies | Results | Conclusions We conducted two different users studies… ● Six users participated in our two user studies●Users were allowed a warm-up period ●Five usability questions were asked after the study

  12. Motivation | Device Design | User Studies | Results| Conclusions On a scale of 1 (easy) to 5 (hard), indicate the degree of difficulty involved with initially learning to use the surfaceless interface? ● Mean = 2.00●Standard Deviation = 1.00

  13. Motivation | Device Design | User Studies | Results| Conclusions On a scale of 1 (easy) to 5 (hard), indicate the degree of difficulty involved in using the surfaceless user interface with the geography application. ● Mean = 1.60●Standard Deviation = 0.55

  14. Motivation | Device Design | User Studies | Results| Conclusions On a scale of 1 (easy) to 5 (hard), indicate the degree of difficulty involved in using the surfaceless user interface with the mechanical engineering application. ● Mean = 2.80●Standard Deviation = 0.84

  15. Motivation | Device Design | User Studies | Results| Conclusions On a scale of 1 (similar) to 5 (dissimilar), indicate the degree of similarity in using the surfaceless interface for sketching when compared to a Tablet PC. ● Mean = 2.40●Standard Deviation = 1.14

  16. Motivation | Device Design | User Studies | Results| Conclusions On a scale of 1 (preferable) to 5 (not preferable), indicate the degree of preference involved in using the surfaceless interface over a Tablet PC for sketching purposes. ● Mean = 3.60●Standard Deviation = 0.89

  17. Motivation | Device Design | User Studies | Results | Conclusions From our studies we conclude… ● The device is easy to learn to use initially● Interaction difficulty increases proportional to drawing complexity ● Users found the new interface slightly similar to Tablet PCs ● Users had a preference for Tablet PCs

  18. Motivation | Device Design | User Studies | Results | Conclusions What we are doing now… ● Conduct user studies with our 18 recognizable low-level primitives● Study how humans actually draw in two- dimensions given this new space ● Add the capabilities to draw in actual three- dimensional space using AR ● Study how humans actually draw in three- dimensional space using AR

  19. A Surfaceless Pen-Based Interface Student Research Week March 23, 2010 – Texas A&M University

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