1. Our Publications in SIGCHI  CHI 2009 To Move or Not to Move: A Comparison between Steerable versus Fixed Focus Region Paradigms in Multi-Resolution Tabletop Display Systems SmartPlayer: User-Centric Video Fast- Forwarding  CHI 2010 Touching the Void: Direct-Touch Interaction for Intangible Displays iCon: Utilizing Everyday Objects as Auxiliary, Additional, and Instant Tabletop Controller imTop -> imPro iCon

2. Yi-Ping Hung Professor, Graduate Institute of Networking and Multimedia National Taiwan University

3.  On-Surface Interactions Multi-Touch Tangible Object Detection  Beyond-Surface Interactions Interactive 3D Viewer Motivation

4. IDEA: Using an Invisible Projection Location & Orientation -- 6 DOF ColorProjector IR Projector IR Camera Mirror

5. Applications

6. iLamp  Project high-resolution content on the surface, mimicking the use of a desk lamp.

8. iFlashlight  A mobile version of iLamp, facilitating information explorations and cooperative tasks.

10. iView  An intuitive tool to see 3D content or augmented information from different perspectives.

12. Implementation

13. Marker Split and Merge  Maker size adapts to camera position  Markers split when camera at closeup  Markers merge when camera moves away

14. Marker On/Off  Marker on for positioning camera  Marker off for detecting fingers  Finger-ROI detection for marker on/off With Marker OffWithout Marker Off ROI

15. IR Projector IR Cameras IR Camera of Mobile Device Smoothing Simulated Background Observed ImageForegrounds Tangible Objects Finger Touches Layout Manager Prediction Color Projector ROI Applications Kalman Filtering Real scene Block Diagram

17. Thanks

19. Eagle-Eye View Under-Desk