支援單手互動之指間觸控輸入界面設計

這篇論文提出了DigitSpace,一個不需要視覺回饋的,支援單手互動的指尖觸控輸入界面。該指尖觸控界面僅需要單手和非常小的動作就可以完成命令輸入,提供了相當高的可用性。但是此前相關研究的目標主要集中於如何更準確地偵測指尖的動作和手勢,而如何設計一個合適的指尖觸控輸入界面依然未被研究。所以這篇論文的目的就是同時以人體工程學和準確度為考量,提出一個適合單手互動的指尖觸控輸入界面。通過第一個實驗,我們找到了在單手指尖觸控界面上適合點擊和手勢輸入的區域。根據這個結果,我們又進行了另外兩個實驗來分別研究使用者在適合輸入的區域中進行點擊和手勢輸入時的表現。使用者研究的結果顯示,在適合輸入的區域中,一般的使用者都有能力區分16個不同的位置,和以92%的準確度輸入英文字母。基於從實驗結果觀察得到的設計方針,我們實作了HallFingers,作為一個概念性的穿戴式設備,展示了支援單手互動的指尖觸控輸入界面帶來的互動效益。

關鍵字

單手互動；在體互動界面；無視覺回饋；人體工程學

並列摘要

This paper presents DigitSpace, a thumb-to-fingers touch interface sup- porting one-handed and eyes-free input. The thumb-to-fingers actions involve solely single hand and very low motion cost, thus providing way high avail- ability. However, previous works mainly focus on the sensing techniques, the proper design of thumb-to-fingers touch interface remains unknown. This paper explores the interfaces of two thumb-to-fingers touch inputs, touch and gesture, by considering both ergonomics and precision. Our first study recognized the segments of fingers containing acceptable physical comfort. Based on the comfort regions, we further evaluated the participants’ ability of performing touch and unistroke gesture input in the following two studies. The results indicate that within the comfort regions, the participants could perfectly distinguish at least 16 positions on the fingers, and perform the eyes-free Graffiti input with 92% accuracy. Based on the design implications from the observations, we proposed HallFingers, as a proof-of-concept prototype, to demonstrate the benefits of thumb-to-fingers touch interface.

並列關鍵字

one-handed interaction ； on-body interface ； eyes-free interaction ； ergonomics.

參考文獻

[1] D. Ashbrook, P. Baudisch, and S. White. Nenya: Subtle and eyes-free mobile input with a magnetically-tracked finger ring. In ACM CHI ’11, pages 2043–2046, 2011.

[2] G. Bailly, J. Mu ̈ller, M. Rohs, D. Wigdor, and S. Kratz. Shoesense: A new perspective on gestural interaction and wearable applications. In ACM CHI ’12, pages 1239–1248, 2012.

[3] S. Boring, D. Ledo, X. A. Chen, N. Marquardt, A. Tang, and S. Greenberg. The fat thumb: Using the thumb’s contact size for single-handed mobile interaction. In ACM Mobile- HCI’12, pages 39–48, 2012.

[4] L. Chan, R.-H. Liang, M.-C. Tsai, K.-Y. Cheng, C.-H. Su, M. Y. Chen, W.-H. Cheng, and B.-Y. Chen. Fingerpad: Private and subtle interaction using fingertips. In ACM UIST’13, pages 255–260, 2013.

[5] K.-Y. Chen, K. Lyons, S. White, and S. Patel. utrack: 3d input using two magnetic sensors. In Proc. ACM UIST ’13, pages 237–244, 2013.

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支援單手互動之指間觸控輸入界面設計

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