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Innovative Interaction Methods for Multi-User Handheld Projectors

Explore new ways of multi-user interaction using handheld projectors. View strengths, weaknesses, and suggestions from reviews of three notable studies in ubiquitous computing. Discover novel techniques and receiving user feedback. Enhance alignment, synchronization, and performance in various lighting conditions for improved user experience.

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Innovative Interaction Methods for Multi-User Handheld Projectors

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  1. IN-CLASS REVIEWMulti-User Interaction using Handheld ProjectorsbyXiang Cao et al. Ivan Elhart - ECE 992 Ubiquitous Computing University of New Hampshire 10/07/2008

  2. Strengths • A novel idea of multi-user interaction using handheld projectors • Each interaction technique is demonstrated through pictures • They provided a video

  3. Weaknesses • Their results are based on informal user feedback without statistical analysis

  4. Suggestions • Hypotheses could be more clearly stated • Pictures could focus more on the interaction • The tracking system and interactions could be better explained • Performance of the interaction using handheld devices could be studied in different light conditions • To study how alignment and synchronization between projectors effects users’ experience • To have a system with a static projection and multiple handheld projectors which can explore the static image (for example Museum)

  5. IN-CLASS REVIEWShadow reaching: A New Perspective on Interaction for Large Wall DisplaysbyGarth Shoemaker et al. Ivan Elhart - ECE 992 Ubiquitous Computing University of New Hampshire 10/07/2008

  6. Strengths • A new perspective on how shadows (real and virtual) can be used as a user input

  7. Weaknesses • Results were based on informal observation of six first time users • Writing style could be improved • “When designing shadow-based interactions, certain choices must be made.”

  8. Suggestions • Problems, goals, and hypothesis could be more clearly stated even though they were restated several times through the paper • When will inconsistent lighting and blurring cause problems?

  9. IN-CLASS REVIEWDesign of Human-Map System InteractionbyThomas Porathe and Johannes Prison Ivan Elhart - ECE 992 Ubiquitous Computing University of New Hampshire 10/07/2008

  10. Strengths • Problem is efficiently introduced through real world event (Norwegian high-speed ferry Sleipner) • Laboratory experiment with two groups of users • 45 amateur navigators • 30 Academy professionals • Statistical data analysis was performed and results were presented effectively on graphs

  11. Weaknesses • 10x10 laboratory maze grid is far away from real world scenarios • Goals and hypothesis are not clear and they were restated several times

  12. Suggestions • Results could be explained in more detail with better conclusion • Order of the tasks and maps may effect results: specify how this was handled (randomized may not be ok)

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