Session:「Touch and haptics」

Evaluating User Satisfaction with Typography Designs via Mining Touch Interaction Data in Mobile Reading

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3173687

論文アブストラクト: Previous work has demonstrated that typography design has a great influence on users' reading experience. However, current typography design guidelines are mainly for general purpose, while the individual needs are nearly ignored. To achieve personalized typography designs, an important and necessary step is accurately evaluating user satisfaction with the typography designs. Current evaluation approaches, e.g., asking for users' opinions directly, however, interrupt the reading and affect users' judgments. In this paper, we propose a novel method to address this challenge by mining users' implicit feedbacks, e.g., touch interaction data. We conduct two mobile reading studies in Chinese to collect the touch interaction data from 91 participants. We propose various features based on our three hypotheses to capture meaningful patterns in the touch behaviors. The experiment results show the effectiveness of our evaluation models with higher accuracy on comparing with the baseline under three text difficulty levels, respectively.

日本語のまとめ:

タイポグラフィのデザインガイドラインをユーザーのタッチ動作から導き出す。タイポグラフィデザインに満足していると読む速度が一定。満足していないと文章の最初の部分を読む時間がかかる。

Visuo-Haptic Illusions for Improving the Perceived Performance of Shape Displays

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3173724

論文アブストラクト: In this work, we utilize visuo-haptic illusions to improve the perceived performance of encountered-type haptic devices, specifically shape displays, in virtual reality. Shape displays are matrices of actuated pins that travel vertically to render physical shapes; however, they have limitations such as low resolution, small display size, and low pin speed. To address these limitations, we employ illusions such as redirection, scaling, and retargeting that take advantage of the visual dominance effect, the idea that vision often dominates when senses conflict. Our evaluation of these techniques suggests that redirecting sloped lines with angles less than 40 degrees onto a horizontal line is an effective technique for increasing the perceived resolution of the display. Scaling up the virtual object onto the shape display by a factor less than 1.8x can also increase the perceived resolution. Finally, using vertical redirection a perceived 3x speed increase can be achieved.

日本語のまとめ:

タンジブルインターフェースにvisio-haptic illusionsを組み合わせて、解像度やディスプレイサイズの問題を克服する。

I Really did That: Sense of Agency with Touchpad, Keyboard, and On-skin Interaction

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3173952

論文アブストラクト: Input on the skin is emerging as an interaction style. At CHI 2012, Coyle and colleagues identified an increase in the sense of agency (SoA) as one benefit of skin input. However, their study only compared skin input to button presses and has not, to our knowledge, been replicated. Therefore, we had 24 participants compare skin input to both button presses and touchpad input, measuring SoA using the Libet Clock paradigm. We replicate previous findings regarding increased SoA in skin versus button input and also find that SoA for skin is significantly increased compared to touchpad input. Interview data addressing subjective experience further support these findings. We discuss agency and the experiences associated with skin input, as well as differences to input with non-skin devices.

日本語のまとめ:

肌インタラクションにより自己主体感(Sense of agency)の向上するか調べ、ボタン、タッチパッドに比べ有意的な向上が示された。

Vibrational Artificial Subtle Expressions: Conveying System's Confidence Level to Users by Means of Smartphone Vibration

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3174052

論文アブストラクト: Artificial subtle expressions (ASEs) are machine-like expressions used to convey a system's confidence level to users intuitively. So far, auditory ASEs using beep sounds, visual ASEs using LEDs, and motion ASEs using robot movements have been implemented and shown to be effective. In this paper, we propose a novel type of ASE that uses vibration (vibrational ASEs). We implemented the vibrational ASEs on a smartphone and conducted experiments to confirm whether they can convey a system's confidence level to users in the same way as the other types of ASEs. The results clearly showed that vibrational ASEs were able to accurately and intuitively convey the designed confidence level to participants, demonstrating that ASEs can be applied in a variety of applications in real environments.

日本語のまとめ:

機械の信頼度を伝えるArtificial subtle expressionsを振動で実装し、スマホゲームで実験をした。Decreasing vibrational AESよりFlat vibrational AESのほうが被験者が機械の提案を受け入れた。