運用磁鐵設計可攜式無接縫實體互動

GaussTUIKit: Designing Portable and Seamless Tangible Interactions Using Magnetics

梁容豪(Rong-Hao Liang)

指導教授 ： 陳炳宇

國立臺灣大學/電機資訊學院/資訊網路與多媒體研究所/博士(2014年)

https://doi.org/10.6342/NTU.2014.11051

摘要

實體使用者界面（TUI）已能用在普及的可攜式螢幕上以促進一般使用者與數位內容之間的互動。然而，由於裝置內建感測器的物體偵測能力有限，設計師需要使用更多的隱喻與空間對應來填補虛擬與現實之間的隔閡，同時也增加了使用者認知上的負擔。本論文提出運用磁鐵設計之無接縫實體互動系統：GaussTUIKit。透過將類比霍爾效應感測網格板安裝在可攜式螢幕的背面，系統便能即時解析螢幕上方放置的多個磁性物件的位置、方向、形狀與ID。基於磁場對非鐵磁性材料的穿透性，設計師可以自由設計磁性實體物件之外觀，而使用者則能用手或工具在近平面螢幕空間自由地操縱磁性實體物件，而不會影響偵測效果。我們提出的磁性實體使用者介面設計與磁場感測技術更能夠輔助設計師開發自然且直覺的實體使用者界面，以豐富使用者與可攜式螢幕之間的互動。

關鍵字

磁性 ； 實體互動 ； 可攜式螢幕 ； 類比霍爾效應感測網格板 ； 抗遮蔽感測 ； 畫筆 ； 近平面互動 ； 積木

並列摘要

Tangible user interface (TUI) has been enabled on ubiquitous portable displays to facilitate the interactions between digital content and general users.
Since the object tracking capability of the built-in sensors is limited, designers require to use more metaphors and spatial mappings to fill the gaps between virtual and real worlds, meanwhile increase users' cognitive efforts.
In this thesis, we present GaussTUIKit, a system of seamless tangible interaction designs using magnetics. By attaching an analog Hall-sensor grid to the back of a portable display, the system recognizes position, orientation, shape, and ID of multiple magnetic tangibles on and above the display surface in real-time. Due to magnetic penetration on non-ferrous materials, designers can freely shape the magnetic tangible in desirable expression, and users can freely manipulate the magnetic tangibles by hands or tools in the display's near-surface space without affecting sensing.
The proposed magnetic TUI designs and magnetic-field sensing techniques better support designers to develop natural and intuitive tangible user interfaces to enrich how individuals interact with the portable displays.

並列關鍵字

Magnetism ； Tangible Interaction ； Portable Displays ； Analog Hall-sensor Grid ； Occlusion-Free Sensing ； Stylus ； Near-Surface Interactions ； Constructive Assembly

參考文獻

[1] D. Anderson, J. L. Frankel, J. Marks, A. Agarwala, P. Beardsley, J. Hodgins, D. Leigh, K. Ryall, E. Sullivan, and J. S. Yedidia. Tangible interaction + graphical interpretation: a new approach to 3d modeling. In Proceedings of ACM SIGGRAPH Conference on Computer Graphics and Interactive Techniques (SIGGRAPH) ’00, pages 393–402, 2000.

[2] D. Ashbrook, P. Baudisch, and S. White. Nenya: subtle and eyes-free mobile input with a magnetically-tracked finger ring. In Proceedings of ACM SIGCHI Conference on Human Factors in Computing Systems (CHI) ’11, pages 2043–2046, 2011.

[3] D. Avrahami, J. O. Wobbrock, and S. Izadi. Portico: tangible interaction on and around a tablet. In Proceedings of ACM Symposium on User Interface Software and Technology (UIST) ’11, pages 347–356, 2011.

[4] P. Baudisch, T. Becker, and F. Rudeck. Lumino: tangible blocks for tabletop computers based on glass fiber bundles. In Proceedings of ACM SIGCHI Conference on Human Factors in Computing Systems (CHI) ’10, pages 1165–1174, 2010.

[5] X. Bi, T. Moscovich, G. Ramos, R. Balakrishnan, and K. Hinckley. An exploration of pen rolling for pen-based interaction. In Proceedings of ACM Symposium on User Interface Software and Technology (UIST) ’08, pages 191–200, 2008.