| 1. |
- Li, Andol X., et al.
(författare)
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Improving the User Engagement in Large Display Using Distance-Driven Adaptive Interface
- 2016
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Ingår i: Interacting with computers. - : Oxford University Press (OUP). - 0953-5438 .- 1873-7951. ; 28:4, s. 462-478
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Tidskriftsartikel (refereegranskat)abstract
- Current large display-based user interfaces are mainly derived from normal-sized desktop screens and the extra-large size causes difficulties in information navigation and perception. Therefore, user engagement in large display-based information interaction is relatively low. In order to address the user engagement issue, in this paper we propose the distance-driven adaptive interface, which specialises in performing navigation tasks within large displays. We conducted an initial exploratory study with 30 participants to examine how the distance correlated with interaction performances in large displays. Given the findings we conducted an experimental study with an additional 31 participants to further investigate how the distance-driven interface satisfies users' distance requirements and improves user engagement within six dimensions. The results show that the distance-driven interface offered a statistically significant user engagement improvement in terms of novelty, felt involvement, focused attention and endurability. Importantly, linear correlations between the distance, interaction efficiency and accuracy were identified-in that efficiency increased and accuracy decreased with increasing distance.
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| 2. |
- Li, Andol X., et al.
(författare)
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On the Influence of Distance in the Interaction With Large Displays
- 2016
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Ingår i: IEEE/OSA Journal of Display Technology. - 1551-319X .- 1558-9323. ; 12:8, s. 840-850
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Tidskriftsartikel (refereegranskat)abstract
- As reported by a recent survey, over half of large display purchases are conducted for productivity purposes, while the remainder are purchased for a variety of purposes such as gaming and advertising. These large displays have advanced visibility, scalability, and accessibility characteristics and thus benefit perceived usability. However, usability issues such as the difficulties in precisely accessing distal information on large displays while on the move are still of concern. Therefore, in this paper, we investigate the influence of moving distance on perceived usability in interactions with large displays. Comparative study results show inconsistent perceived usability throughout a range of distances, which differs from standard usability conventions. Moreover, the results show a correlation between distance and perceived usability in that, as the distance from commonly visited ranges increases, the perceived usability level decreases, and vice versa. The study demonstrates that distance is an effective interaction modality in large-display interactions, although it has weaknesses such as limited input channels.
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| 3. |
- Lou, Xiaolong, et al.
(författare)
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Optimizing Free Hand Selection in Large Displays by Adapting to User’s Physical Movements
- 2016
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Ingår i: Proceedings of the 2016 Symposium on Spatial User Interaction. - New York, NY, USA : Association for Computing Machinery (ACM). - 9781450340687 ; , s. 23-31
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Konferensbidrag (refereegranskat)abstract
- Advance in motion sensing technologies such as Microsoft Kinect and ASUS Xtion has enabled users to select targets on a large display through natural hand gestures. In such interaction, the users move left and right to navigate the display, and they frequently adjust body proximity against the display thus to switch between overall views and focus views. These physical movements benefit information navigation, interaction modality switch, and user interface adaptation. But in more specific context of free hand selection in large displays, the effect of physical movements is less systematically investigated. To explore the potential of physical movements in free hand selection, a physical movements-adapted technique is developed and evaluated. The results show that the new technique has significant improvements in both selection efficiency and accuracy, the more difficult selection task the more obvious improvement in accuracy. Additionally, the new technique is preferred to the baseline of pointer acceleration (PA) technique by participants.
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