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68
Territoriality in collaborative tabletop workspaces
- In Proceedings of CSCW ’04
, 2004
"... Researchers seeking alternatives to traditional desktop computers have begun exploring the potential collaborative benefits of digital tabletop displays. However, there are still many open issues related to the design of collaborative tabletop interfaces, such as whether these systems should automat ..."
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Cited by 184 (8 self)
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Researchers seeking alternatives to traditional desktop computers have begun exploring the potential collaborative benefits of digital tabletop displays. However, there are still many open issues related to the design of collaborative tabletop interfaces, such as whether these systems should automatically orient workspace items or enforce ownership of workspace content. Understanding the natural interaction practices that people use during tabletop collaboration with traditional media (e.g., pen and paper) can help to address these issues. Interfaces that are modeled on these practices will have the additional advantage of supporting the interaction skills people have developed over years of collaborating at traditional tables. To gain a deeper understanding of these interaction practices we conducted two observational studies of traditional tabletop collaboration in both
Fluid integration of rotation and translation
- IN: CHI 2005: PROCEEDINGS OF THE SIGCHI CONFERENCE ON HUMAN FACTORS IN COMPUTING SYSTEMS
, 2005
"... Previous research has shown that rotation and orientation of items plays three major roles during collaboration: comprehension, coordination and communication. Based on these roles of orientation and advice from kinesiology research, we have designed the Rotate’N Translate (RNT) interaction mechanis ..."
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Cited by 92 (12 self)
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Previous research has shown that rotation and orientation of items plays three major roles during collaboration: comprehension, coordination and communication. Based on these roles of orientation and advice from kinesiology research, we have designed the Rotate’N Translate (RNT) interaction mechanism, which provides integrated control of rotation and translation using only a single touch-point for input. We present an empirical evaluation comparing RNT to a common rotation mechanism that separates control of rotation and translation. Results of this study indicate RNT is more efficient than the separate mechanism and better supports the comprehension, coordination and communication roles of orientation.
The introduction of a shared interactive surface into a communal space
- CSCW
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Visual Tracking of Bare Fingers for Interactive Surfaces
- In Proceedings of 17th ACM Symposium User Interface Software & Technology (UIST'04
, 2004
"... Visual tracking of bare fingers allows more direct manipulation of digital objects, multiple simultaneous users interacting with their two hands, and permits the interaction on large surfaces, using only commodity hardware. After presenting related work, we detail our implementation. Its design is b ..."
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Cited by 48 (2 self)
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Visual tracking of bare fingers allows more direct manipulation of digital objects, multiple simultaneous users interacting with their two hands, and permits the interaction on large surfaces, using only commodity hardware. After presenting related work, we detail our implementation. Its design is based on our modeling of two classes of algorithms that are key to the tracker: Image Differencing Segmentation (IDS) and Fast Rejection Filters (FRF). We introduce a new chromatic distance for IDS and a FRF that is independent to finger rotation. The system runs at full frame rate (25 Hz) with an average total system latency of 80 ms, independently of the number of tracked fingers. When used in a controlled environment such as a meeting room, its robustness is satisfying for everyday use.
Supporting social presence through lightweight photo sharing on and off the desktop.
- In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
, 2004
"... ABSTRACT Lightweight photo sharing, particularly via mobile devices, is fast becoming a common communication medium used for maintaining a presence in the lives of friends and family. How should such systems be designed to maximize this social presence while maintaining simplicity? An experimental ..."
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Cited by 45 (0 self)
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ABSTRACT Lightweight photo sharing, particularly via mobile devices, is fast becoming a common communication medium used for maintaining a presence in the lives of friends and family. How should such systems be designed to maximize this social presence while maintaining simplicity? An experimental photo sharing system was developed and tested that, compared to current systems, offers highly simplified, groupcentric sharing, automatic and persistent people-centric organization, and tightly integrated desktop and mobile sharing and viewing. In an experimental field study, the photo sharing behaviors of groups of family or friends were studied using their normal photo sharing methods and with the prototype sharing system. Results showed that users found photo sharing easier and more fun, shared more photos, and had an enhanced sense of social presence when sharing with the experimental system. Results are discussed in the context of design principles for the rapidly increasing number of lightweight photo sharing systems.
TeamSearch: Comparing Techniques for Co-Present Collaborative Search of Digital Media
- IEEE Tabletop
, 2006
"... Interactive tables can enhance small-group colocated collaborative work in many domains. One application enabled by this new technology is copresent, collaborative search for digital content. For example, a group of students could sit around an interactive table and search for digital images to use ..."
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Cited by 44 (5 self)
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Interactive tables can enhance small-group colocated collaborative work in many domains. One application enabled by this new technology is copresent, collaborative search for digital content. For example, a group of students could sit around an interactive table and search for digital images to use in a report. We have developed TeamSearch, an application that enables this type of activity by supporting group specification of Boolean-style queries. We explore whether TeamSearch should consider all group members ’ activities as contributing to a single query or should interpret them as separate, parallel search requests. The results reveal that both strategies are similarly efficient, but that collective query formation has advantages in terms of enhancing group collaboration and awareness, allowing users to bootstrap query-specification skills, and personal preference. This suggests that team-centric UIs may offer benefits beyond the “staples ” of efficiency and result quality that are usually considered when designing search interfaces. 1.
Storage Bins: Mobile storage for collaborative tabletop displays
- IEEE Computer Graphics & Applications
, 2005
"... Casual piling of paper-based media during traditional tabletop collaboration is an important practice that helps coordinate task and group interactions. Previous research has shown that the ability to move piles around on a table plays a critical role in accessing and sharing task resources. However ..."
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Cited by 39 (2 self)
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Casual piling of paper-based media during traditional tabletop collaboration is an important practice that helps coordinate task and group interactions. Previous research has shown that the ability to move piles around on a table plays a critical role in accessing and sharing task resources. However, existing casual storage techniques for digital workspaces only provide access to stored items at the periphery of the workspace, potentially compromising collaborative interactions at a digital tabletop display. To address this issue, we introduce storage bins, a mobile storage mechanism that enables access to stored items anywhere in the workspace. We also present an exploratory user study involving the use of mobile and peripheral storage mechanisms on a large, hi-resolution collaborative tabletop display. Findings from this study demonstrate the utility of storage bins and further our understanding of the impact of mobile and peripheral storage mechanisms on collaboration at a tabletop display.
Building social discourse around mobile photos–a systemic perspective
- Proc. MobileHCI 2005. ACM Press
, 2005
"... Camera phones have been viewed simplistically as digital cameras with poor picture quality while neglecting the utility of the two key functionalities of mobile phones: network connection and access to personal information. This is the first HCI paper to examine mobile photos from a systemic perspec ..."
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Cited by 23 (7 self)
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Camera phones have been viewed simplistically as digital cameras with poor picture quality while neglecting the utility of the two key functionalities of mobile phones: network connection and access to personal information. This is the first HCI paper to examine mobile photos from a systemic perspective: how assignment of phases of mobile photo lifecycle to different platforms affects social discourse around shared photos. We conducted a 6-week user trial of MobShare, a tripartite system with dedicated functions and task couplings for a mobile phone, a server, and a PC browser. We analyze how MobShare’s couplings and distribution of functionalities affected the observed types of social discourse that formed around mobile photos: in-group post-event discourse, self-documents and reports, greetings and thanks. Several central design issues arising from the systemic view are discussed: heterogeneity of environments, integration and distribution of functionalities, couplings and decouplings of interaction tasks, notification mechanisms, and provision of necessary UI resources for different tasks.
Photohelix: browsing, sorting and sharing digital photo collections
- IN: TABLETOP 2007: SECOND ANNUAL IEEE INTERNATIONAL WORKSHOP ON HORIZONTAL INTERACTIVE HUMAN-COMPUTER SYSTEMS
, 2007
"... In this paper we debut Photohelix, a novel interactive system for browsing, sorting and sharing digital images. We present our design rationale for such a system and introduce Photohelix as a prototype application featuring a novel visualization and interaction technique for media browsing on intera ..."
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Cited by 23 (5 self)
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In this paper we debut Photohelix, a novel interactive system for browsing, sorting and sharing digital images. We present our design rationale for such a system and introduce Photohelix as a prototype application featuring a novel visualization and interaction technique for media browsing on interactive tabletops. We conducted a user study in order to evaluate and verify our design. We will present our findings in this paper and discuss further implications for future development of such systems derived from our experiences with Photohelix.
TNT: improved rotation and translation on digital tables. Graphics interface
- In GI ’06: Proceedings of the 2006 conference on Graphics interface
, 2006
"... Digital tabletop systems allow users to work on computational objects in a flexible and natural setting. Since users can easily move to different positions around a table, systems must allow people to orient artifacts to their current position. However, it is only recently that rotation and translat ..."
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Cited by 21 (1 self)
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Digital tabletop systems allow users to work on computational objects in a flexible and natural setting. Since users can easily move to different positions around a table, systems must allow people to orient artifacts to their current position. However, it is only recently that rotation and translation techniques have been specifically designed for tabletops, and existing techniques still do not feel as simple and efficient as their real-world counterparts. To address this problem, we studied the ways that people move and reorient sheets of paper on real-world tabletops. We found that in almost all cases, rotation and translation are carried out simultaneously, and that an open-palm hand position was the most common way to carry out the motion. Based on our observations, we designed a new set of reorientation techniques that more closely parallel real-world motions. The new techniques, collectively called TNT, use three-degree-of-freedom (3DOF) input to allow simultaneous rotation and translation. A user study showed that all three variants of TNT were faster than a recent technique called RNT; in addition, participants strongly preferred
