Graph exploration and editing are still mostly considered independently and systems to work with ... more Graph exploration and editing are still mostly considered independently and systems to work with are not designed for todays interactive surfaces like smartphones, tablets or tabletops. When developing a system for those modern devices that supports both graph exploration and graph editing, it is necessary to 1) identify what basic tasks need to be supported, 2) what interactions can be used, and 3) how to map these tasks and interactions. This technical report provides a list of basic interaction tasks for graph exploration and editing as a result of an extensive system review. Moreover, di?erent interaction modalities of interactive surfaces are reviewed according to their interaction vocabulary and further degrees of freedom that can be used to make interactions distinguishable are discussed. Beyond the scope of graph exploration and editing, we provide an approach for ?nding and evaluating a mapping from tasks to interactions, that is generally applicable. Thus, this work acts a...
Proceedings of the 2014 International Working Conference on Advanced Visual Interfaces - AVI '14, 2014
In many cases, Tangible User Interfaces allow the manipulation of digital content with physical o... more In many cases, Tangible User Interfaces allow the manipulation of digital content with physical objects recognized by an interactive tabletop. Usually, such tangible objects are made of opaque wood or synthetic materials, thereby occluding the display. In this paper, we systematically investigate the promising potential of tangibles entirely made of transparent or translucent materials. Besides visualizing content directly below a manipulable tangible, transparent objects also facilitate direct touch interaction with the content below, dynamic illumination and glowing effects. We propose a comprehensive design space for transparent tangibles on tabletops based on a thorough review of existing work. By reporting on our own experiments and prototypes, we address several gaps in this design space, regarding aspects of both interaction and visualization. These include the illumination of tangibles as well as the precise input with transparent tangibles for which we also present the promising results of an initial user study. Finally, benefits and shortcomings of transparent tangibles are discussed and resulting design considerations are presented.
Proceedings of the 2014 conference on Designing interactive systems - DIS '14, 2014
As a novel class of mobile devices with rich interaction capabilities we introduce tPads -transpa... more As a novel class of mobile devices with rich interaction capabilities we introduce tPads -transparent display tablets. tPads are the result of a systematic design investigation into the ways and benefits of interacting with transparent mobiles which goes beyond traditional mobile interactions and augmented reality (AR) applications. Through a usercentered design process we explored interaction techniques for transparent-display mobiles and classified them into four categories: overlay, dual display & input, surface capture and model-based interactions. We investigated the technical feasibility of such interactions by designing and building two touch-enabled semi-transparent tablets called tPads and a range of tPad applications. Further, a user study shows that tPad interactions applied to everyday mobile tasks (application switching and image capture) outperform current mobile interactions and were preferred by users. Our hands-on design process and experimental evaluation demonstrate that transparent displays provide valuable interaction opportunities for mobile devices.
Proceedings of The International Symposium on Pervasive Displays - PerDis '14, 2014
We present Contact Augmented Reality (cAR), a form of AR where a mobile device with a transparent... more We present Contact Augmented Reality (cAR), a form of AR where a mobile device with a transparent display rests on top of the augmented object. cAR is based on the notion that interactions with digital content are enriched by the tangibility of physically moving a device on and off the augmented object. We propose and implement three categories of cAR interaction techniques: contact-based, off-contact and content-aware. We built two cAR prototypes and explore how cAR can be applied to the domain of active reading. A first low-fidelity prototype, consisting of an interactive tabletop and transparent acrylic tangibles, allowed us to iteratively design and test interaction techniques. The second and higher-fidelity prototype, called a tPad, uses a semitransparent touch-enabled 7" LCD display that is placed on top of back-lit paper documents. The tPad uses an external camera and feature matching algorithms to identify the document and to determine its location and orientation. We report on user feedback and elaborate on the salient technical challenges for cAR devices.
Graph exploration and editing are still mostly considered independently and systems to work with ... more Graph exploration and editing are still mostly considered independently and systems to work with are not designed for todays interactive surfaces like smartphones, tablets or tabletops. When developing a system for those modern devices that supports both graph exploration and graph editing, it is necessary to 1) identify what basic tasks need to be supported, 2) what interactions can be used, and 3) how to map these tasks and interactions. This technical report provides a list of basic interaction tasks for graph exploration and editing as a result of an extensive system review. Moreover, di?erent interaction modalities of interactive surfaces are reviewed according to their interaction vocabulary and further degrees of freedom that can be used to make interactions distinguishable are discussed. Beyond the scope of graph exploration and editing, we provide an approach for ?nding and evaluating a mapping from tasks to interactions, that is generally applicable. Thus, this work acts a...
Proceedings of the 2014 International Working Conference on Advanced Visual Interfaces - AVI '14, 2014
In many cases, Tangible User Interfaces allow the manipulation of digital content with physical o... more In many cases, Tangible User Interfaces allow the manipulation of digital content with physical objects recognized by an interactive tabletop. Usually, such tangible objects are made of opaque wood or synthetic materials, thereby occluding the display. In this paper, we systematically investigate the promising potential of tangibles entirely made of transparent or translucent materials. Besides visualizing content directly below a manipulable tangible, transparent objects also facilitate direct touch interaction with the content below, dynamic illumination and glowing effects. We propose a comprehensive design space for transparent tangibles on tabletops based on a thorough review of existing work. By reporting on our own experiments and prototypes, we address several gaps in this design space, regarding aspects of both interaction and visualization. These include the illumination of tangibles as well as the precise input with transparent tangibles for which we also present the promising results of an initial user study. Finally, benefits and shortcomings of transparent tangibles are discussed and resulting design considerations are presented.
Proceedings of the 2014 conference on Designing interactive systems - DIS '14, 2014
As a novel class of mobile devices with rich interaction capabilities we introduce tPads -transpa... more As a novel class of mobile devices with rich interaction capabilities we introduce tPads -transparent display tablets. tPads are the result of a systematic design investigation into the ways and benefits of interacting with transparent mobiles which goes beyond traditional mobile interactions and augmented reality (AR) applications. Through a usercentered design process we explored interaction techniques for transparent-display mobiles and classified them into four categories: overlay, dual display & input, surface capture and model-based interactions. We investigated the technical feasibility of such interactions by designing and building two touch-enabled semi-transparent tablets called tPads and a range of tPad applications. Further, a user study shows that tPad interactions applied to everyday mobile tasks (application switching and image capture) outperform current mobile interactions and were preferred by users. Our hands-on design process and experimental evaluation demonstrate that transparent displays provide valuable interaction opportunities for mobile devices.
Proceedings of The International Symposium on Pervasive Displays - PerDis '14, 2014
We present Contact Augmented Reality (cAR), a form of AR where a mobile device with a transparent... more We present Contact Augmented Reality (cAR), a form of AR where a mobile device with a transparent display rests on top of the augmented object. cAR is based on the notion that interactions with digital content are enriched by the tangibility of physically moving a device on and off the augmented object. We propose and implement three categories of cAR interaction techniques: contact-based, off-contact and content-aware. We built two cAR prototypes and explore how cAR can be applied to the domain of active reading. A first low-fidelity prototype, consisting of an interactive tabletop and transparent acrylic tangibles, allowed us to iteratively design and test interaction techniques. The second and higher-fidelity prototype, called a tPad, uses a semitransparent touch-enabled 7" LCD display that is placed on top of back-lit paper documents. The tPad uses an external camera and feature matching algorithms to identify the document and to determine its location and orientation. We report on user feedback and elaborate on the salient technical challenges for cAR devices.
Uploads
Papers by Ulrike Kister