Publication statistics

Pub. period:2001-2012
Pub. count:30
Number of co-authors:38



Co-authors

Number of publications with 3 favourite co-authors:

Mathias Frisch:9
Sophie Stellmach:5
Martin Spindler:3

 

 

Productive colleagues

Raimund Dachselt's 3 most productive colleagues in number of publications:

Harald Reiterer:70
Gerhard Fischer:66
Matt Jones:63
 
 
 

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Raimund Dachselt

Ph.D

Picture of Raimund Dachselt.
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Personal Homepage:
isgwww.cs.uni-magdeburg.de/~dachselt/


Current place of employment:
Otto-von-Guericke University Magdeburg

 

Publications by Raimund Dachselt (bibliography)

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2012
 
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Berndt, Axel, Dachselt, Raimund and Groh, Rainer (2012): A survey of variation techniques for repetitive games music. In: Proceedings of the 2012 Audio Mostly Conference A Conference on Interaction with Sound 2012. pp. 61-67. Available online

How much time will a player spend in an interactive scene? For the majority of game scenarios this is impossible to predict. Therefore, their musical accompaniment is usually disposed to continuously loop until player interaction triggers a change. This approach involves an existential danger: Sooner or later the player becomes aware of the repetitive character of the ambience design; the game scenario emerges as a mere mechanical arrangement and loses much of its integrity. In this survey paper we systematize and discuss the common approaches to conceal musical repetition. Furthermore, we complement them by a number of approaches that incorporate arrangement techniques, aspects of expressive music performance, and generative variation methods that work actively against repetitiveness.

© All rights reserved Berndt et al. and/or ACM Press

 
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Klum, Stefanie, Isenberg, Petra, Langner, Ricardo, Fekete, Jean-Daniel and Dachselt, Raimund (2012): Stackables: combining tangibles for faceted browsing. In: Proceedings of the 2012 International Conference on Advanced Visual Interfaces 2012. pp. 241-248. Available online

We introduce Stackables: tangibles designed to support faceted information seeking in a variety of contexts. We are faced, more than ever, with tasks that require us to find, access, and act on information by ourselves or together with others. Current interfaces for browsing and search in large data spaces, however, largely focus on the support of either individual or collaborative activities. Stackables were designed to bridge this gap and be useful in meetings, for sharing results from individual search activities, and for realistic datasets including multiple facets with large value ranges. Each Stackable tangible represents search parameters that can be shared amongst collaborators, modified during an information seeking process, and stored and transferred. We describe Stackables, their flexible and expressive combination to formulate queries, and the underlying interaction concept in detail. An evaluation provides initial evidence of their usability in targeted and exploratory information seeking tasks.

© All rights reserved Klum et al. and/or ACM Press

 
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Jetter, Hans-Christian, Geyer, Florian, Reiterer, Harald, Dachselt, Raimund, Fischer, Gerhard, Groh, Rainer, Haller, Michael and Herrmann, Thomas (2012): Designing collaborative interactive spaces. In: Proceedings of the 2012 International Conference on Advanced Visual Interfaces 2012. pp. 818-820. Available online

Interactive spaces are ubiquitous computing environments for computer-supported collaboration that exploit and enhance the existing cognitive, physical and social skills of users or groups of users. The workshop aims at documenting and advancing the current state-of-the-art of co-located collaboration in interactive spaces and identifying research challenges and formulating a research agenda by inviting high-quality position and research papers from HCI, Information Visualization, CSCW and CSCL.

© All rights reserved Jetter et al. and/or ACM Press

 
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Stellmach, Sophie and Dachselt, Raimund (2012): Designing gaze-based user interfaces for steering in virtual environments. In: Proceedings of the 2012 Symposium on Eye Tracking Research & Applications 2012. pp. 131-138. Available online

Since eye gaze may serve as an efficient and natural input for steering in virtual 3D scenes, we investigate the design of eye gaze steering user interfaces (UIs) in this paper. We discuss design considerations and propose design alternatives based on two selected steering approaches differing in input condition (discrete vs. continuous) and velocity selection (constant vs. gradient-based). The proposed UIs have been iteratively advanced based on two user studies with twelve participants each. In particular, the combination of continuous and gradient-based input shows a high potential, because it allows for gradually changing the moving speed and direction depending on a user's point-of-regard. This has the advantage of reducing overshooting problems and dwell-time activations. We also investigate discrete constant input for which virtual buttons are toggled using gaze dwelling. As an alternative, we propose the Sticky Gaze Pointer as a more flexible way of discrete input.

© All rights reserved Stellmach and Dachselt and/or ACM Press

 
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Stellmach, Sophie and Dachselt, Raimund (2012): Investigating gaze-supported multimodal pan and zoom. In: Proceedings of the 2012 Symposium on Eye Tracking Research & Applications 2012. pp. 357-360. Available online

Remote pan-and-zoom control for the exploration of large information spaces is of interest for various application areas, such as browsing through medical data in sterile environments or investigating geographic information systems on a distant display. In this context, considering a user's visual attention for pan-and-zoom operations could be of interest. In this paper, we investigate the potential of gaze-supported panning in combination with different zooming modalities: (1) a mouse scroll wheel, (2) tilting a handheld device, and (3) touch gestures on a smartphone. Thereby, it is possible to zoom in at a location a user currently looks at (i.e., gaze-directed pivot zoom). These techniques have been tested with Google Earth by ten participants in a user study. While participants were fastest with the already familiar mouse-only base condition, the user feedback indicates a particularly high potential of the gaze-supported pivot zooming in combination with a scroll wheel or touch gesture.

© All rights reserved Stellmach and Dachselt and/or ACM Press

2011
 
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Frisch, Mathias, Kleinau, Sebastian, Langner, Ricardo and Dachselt, Raimund (2011): Grids & guides: multi-touch layout and alignment tools. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 1615-1618. Available online

Precise alignment of graphical objects and the creation of accurate layouts are crucial activities in many applications, such as graphics design tools, presentation software or graph editors. Surface computing is very promising for these application domains but not fully explored yet. In this paper we contribute two tools which support layout tasks on interactive displays: interactive grids and multi-touch alignment guides. Both tools allow the precise positioning of graphical objects in a flexible and fluent way by multi-touch input. Direct bimanual interaction and physical metaphors are applied to arrange objects along straight lines and curves. A formative user evaluation showed promising results with regard to a productive and easy use of the tools.

© All rights reserved Frisch et al. and/or their publisher

 
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Dachselt, Raimund, Jones, Matt, Hkkil, Jonna, Lochtefeld, Markus, Rohs, Michael and Rukzio, Enrico (2011): Mobile and personal projection (MP2). In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 21-23. Available online

The emergence of mobile and personal projection devices promises new ways to display and interact with content while the user is mobile, and offer new opportunities and challenges for HCI. This workshop aims to formulate fundamental research questions around this emerging field and provides a venue for discussion for researchers and practitioners working in this area. We will focus on new interaction techniques, applications, personal projection devices, interaction design, multi-user aspects, multi-modal user interfaces and social implications. Our aim is to foster the evolution of a mobile and personal projection community.

© All rights reserved Dachselt et al. and/or their publisher

 
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Frisch, Mathias, Langner, Ricardo and Dachselt, Raimund (2011): Neat: a set of flexible tools and gestures for layout tasks on interactive displays. In: Proceedings of the 2011 ACM International Conference on Interactive Tabletops and Surfaces 2011. pp. 1-10. Available online

Creating accurate layouts of graphical objects is an important activity in many graphics applications, such as design tools, presentation software or diagram editors. In this paper, we are contributing Natural and Effective Layout Techniques (Neat). The system provides a consistent set of multi-touch tools and gestures for aligning and distributing graphical objects on interactive surfaces. NEAT explicitly considers expert requirements and supports a rich and consistent set of layout functions. Amongst others, it minimizes visual distraction by layout tools, combines separate steps of interaction to compound ones and allows effective interaction by combining multi-touch and pen input. Furthermore, Neat provides a set of bimanual gestures for achieving layout tasks in a quick and effective way without explicitly invoking any tools. From initial expert user feedback we derive several principles for layout tools on interactive displays.

© All rights reserved Frisch et al. and/or ACM Press

 
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Birr, Steven, Dachselt, Raimund and Preim, Bernhard (2011): Mobile Interactive Displays for Medical Visualization. In: Workshop on Data Exploration for Interactive Surfaces at ITS November, 2011. . Available online

Medical visualization proves to be essential in modern health care systems. Collaborative diagnosis and treatment decisions as well as medical education and training can be enhanced using interactive 2D and 3D graphics. However, besides developing effective visualizations, the challenge remains on how to support optimal interaction especially on mobile devices. This paper presents possible future scenarios of using mobile displays by different medical experts in collaborative environments. Typical tasks, technical requirements, open research issues and challenges on interacting with mobile medical visualization are discussed.

© All rights reserved Birr et al. and/or their publisher

2010
 
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Stellmach, Sophie, Nacke, Lennart and Dachselt, Raimund (2010): 3D attentional maps: aggregated gaze visualizations in three-dimensional virtual environments. In: Proceedings of the 2010 International Conference on Advanced Visual Interfaces 2010. pp. 345-348. Available online

Gaze visualizations hold the potential to facilitate usability studies of interactive systems. However, visual gaze analysis in three-dimensional virtual environments still lacks methods and techniques for aggregating attentional representations. We propose three novel gaze visualizations for the application in such environments: projected, object-based, and surface-based attentional maps. These techniques provide an overview of how visual attention is distributed across a scene, among different models, and across a model's surface. Two user studies conducted among eye tracking and visualization experts approve the high value of these techniques for the fast evaluation of eye tracking studies in virtual environments.

© All rights reserved Stellmach et al. and/or their publisher

 
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Spindler, Martin and Dachselt, Raimund (2010): Exploring information spaces by using tangible magic lenses in a tabletop environment. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 4771-4776. Available online

To solve the challenge of exploring large information spaces on interactive surfaces such as tabletops, we developed an optically tracked, lightweight, passive display (magic lens) that provides elegant three-dimensional exploration of rich datasets. This can either be volumetric, layered, zoomable, or temporal information spaces, which are mapped onto the physical volume above a tabletop. By moving the magic lens through the volume, corresponding data is displayed, thus serving as a window into virtuality. Hereby, various interaction techniques are introduced, which especially utilize the lens' height above a tabletop in a novel way, e.g. for zooming or displaying information layers.

© All rights reserved Spindler and Dachselt and/or their publisher

 
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Frisch, Mathias and Dachselt, Raimund (2010): Off-screen visualization techniques for class diagrams. In: Proceedings of the ACM Symposium on Software Visualization 2010. pp. 163-172. Available online

Visual representations of node-link diagrams are very important for the software development process. In many situations large diagrams -- probably consisting of hundreds of nodes and edges -- have to be edited and explored. In state-of-the-art modeling tools these activities are often accompanied by time consuming panning and zooming. In this paper we contribute the application of off-screen visualization techniques to the domain of node-link diagrams in general and to UML class diagrams in particular. The basic idea of the approach is to give a contextual view of all nodes which are clipped from the current viewport. Nodes are represented by proxy elements located within an interactive border region. The proxies show information of the associated off-screen nodes and can be used to quickly navigate to the respective node. However, there are several challenges when this technique is adapted to node-link diagrams, for example concerning the change of edge routing or scalability. We describe the design space of this approach and present different visualization and interaction techniques in detail. Furthermore, we conducted a formative evaluation of our first prototype. Based on the observations made during the evaluation, we came to final suggestions how particular techniques should be combined.

© All rights reserved Frisch and Dachselt and/or ACM Press

 
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Schmidt, Sebastian, Nacenta, Miguel A., Dachselt, Raimund and Carpendale, Sheelagh (2010): A set of multi-touch graph interaction techniques. In: ITS 10 ACM International Conference on Interactive Tabletops and Surfaces 2010, Saarbrcken, Germany. pp. 113-116. Available online

Interactive node-link diagrams are useful for describing and exploring data relationships in many domains such as network analysis and transportation planning. We describe a multi-touch interaction technique set (IT set) that focuses on edge interactions for node-link diagrams. The set includes five techniques (TouchPlucking, TouchPinning, TouchStrumming, TouchBundling and PushLens) and provides the flexibility to combine them in either sequential or simultaneous actions in order to address edge congestion.

© All rights reserved Schmidt et al. and/or ACM Press

 
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Preim, Bernhard and Dachselt, Raimund (2010): Interaktive Systeme. Heidelberg, Springer

2009
 
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Dachselt, Raimund and Buchholz, Robert (2009): Natural throw and tilt interaction between mobile phones and distant displays. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 3253-3258. Available online

To provide intuitive ways of interacting with media data, this research work addresses the seamless combination of sensor-enabled phones with large displays. An intuitive basic set of tilt gestures is introduced for a stepwise or continuous interaction with both mobile applications and distant user interfaces by utilizing the handheld as a remote control. In addition, we introduce throwing gestures to transfer media documents and even running interfaces to a large display. To improve usability, data and interfaces can be thrown from a mobile phone to a distant screen and also fetched back to achieve mobility. We demonstrate the feasibility of the interaction methods with several advanced application prototypes facilitating a natural flow of interaction.

© All rights reserved Dachselt and Buchholz and/or ACM Press

 
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Stellmach, Sophie, Nacke, Lennart, Dachselt, Raimund and Lindley, Craig A. (2009): Trends and Techniques in Visual Gaze Analysis. In: Hansen, John Paulin and Villanueva, Arantxa (eds.) Proceedings of the 5th Conference on Communication by Gaze Interaction COGAIN 2009 Gaze Interaction For Those Who Want It Most May 26, 2009, Lyngby, Denmark. pp. 89-93. Available online

Visualizing gaze data is an effective way for the quick interpretation of eye tracking results. This paper presents a study investigation benefits and limitations of visual gaze analysis among eye tracking professionals and researchers. The results were used to create a tool for visual gaze analysis within a Master's project.

© All rights reserved Stellmach et al. and/or The COGAIN Association

 
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Spindler, Martin, Stellmach, Sophie and Dachselt, Raimund (2009): PaperLens: advanced magic lens interaction above the tabletop. In: Proceedings of the 2009 ACM International Conference on Interactive Tabletops and Surfaces 2009. pp. 69-76. Available online

In order to improve the three-dimensional (3D) exploration of virtual spaces above a tabletop, we developed a set of navigation techniques using a handheld magic lens. These techniques allow for an intuitive interaction with two-dimensional and 3D information spaces, for which we contribute a classification into volumetric, layered, zoomable, and temporal spaces. The proposed PaperLens system uses a tracked sheet of paper to navigate these spaces with regard to the Z-dimension (height above the tabletop). A formative user study provided valuable feedback for the improvement of the PaperLens system with respect to layer interaction and navigation. In particular, the problem of keeping the focus on selected layers was addressed. We also propose additional vertical displays in order to provide further contextual clues.

© All rights reserved Spindler et al. and/or their publisher

 
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Frisch, Mathias, Heydekorn, Jens and Dachselt, Raimund (2009): Investigating multi-touch and pen gestures for diagram editing on interactive surfaces. In: Proceedings of the 2009 ACM International Conference on Interactive Tabletops and Surfaces 2009. pp. 149-156. Available online

Creating and editing large graphs and node-link diagrams are crucial activities in many application areas. For them, we consider multi-touch and pen input on interactive surfaces as very promising. This fundamental work presents a user study investigating how people edit node-link diagrams on an interactive tabletop. The study covers a set of basic operations, such as creating, moving, and deleting diagram elements. Participants were asked to perform spontaneous gestures for 14 given tasks. They could interact in three different ways: using one hand, both hands, as well as pen and hand together. The subjects' activities were observed and recorded in various ways, analyzed and enriched with think-aloud data. As a result, we contribute a user-elicited collection of touch and pen gestures for editing node-link diagrams. The study provides valuable insight how people would interact on interactive surfaces for this as well as other tabletop domains.

© All rights reserved Frisch et al. and/or their publisher

 
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Spindler, Martin and Dachselt, Raimund (2009): PaperLens: advanced magic lens interaction above the tabletop. In: Proceedings of the 2009 ACM International Conference on Interactive Tabletops and Surfaces 2009. p. D7. Available online

To solve the challenge of exploring large information spaces on interactive surfaces such as tabletops, we developed an optically tracked, lightweight, passive display (magic lens) that provides elegant three-dimensional exploration of rich datasets. This can either be volumetric, layered, zoomable, or temporal information spaces, which are mapped onto the physical volume above a tabletop. By moving the magic lens through the volume, corresponding data is displayed, thus serving as a window into virtuality. Hereby, various interaction techniques are introduced, which especially utilize the lens' height in a novel way, e.g. for zooming or displaying various information layers.

© All rights reserved Spindler and Dachselt and/or their publisher

2008
 
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Dachselt, Raimund, Frisch, Mathias and Weiland, Markus (2008): FacetZoom: a continuous multi-scale widget for navigating hierarchical metadata. In: Proceedings of ACM CHI 2008 Conference on Human Factors in Computing Systems April 5-10, 2008. pp. 1353-1356. Available online

Faceted browsing is a promising way to incrementally refine data sets. Current approaches do not scale well in terms of screen size and have shortcomings in interacting with hierarchical facets. This paper introduces FacetZoom, a novel multi-scale widget combining facet browsing with zoomable user interfaces. Hierarchical facets are displayed as space-filling widgets which allow a fast traversal across all levels while simultaneously maintaining context. We contribute both a seamless continuous navigation and a quick tap-and-center interaction. Two prototypes are described which successfully apply the space-structuring widget to continuous, sampled data and an information collection. A formative user study of the latter indicates that the interface scales well to small screens. FacetZoom is versatile and offers consistent searching and browsing behaviors in a multitude of applications and device settings.

© All rights reserved Dachselt et al. and/or ACM Press

 
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Weiland, Markus and Dachselt, Raimund (2008): Facet folders: flexible filter hierarchies with faceted metadata. In: Proceedings of ACM CHI 2008 Conference on Human Factors in Computing Systems April 5-10, 2008. pp. 3735-3740. Available online

Facet Folders are a visualization and interaction concept for filtering collections of personal data. Although visually derived from the ubiquitous folder hierarchies of file managers, Facet Folders explicitly expose the faceted metadata used for filtering. Facet Folders can be arranged into persistent hierarchies, enabling the construction of dynamically updating views across multiple facets. If demands change, the hierarchy can be easily rearranged.

© All rights reserved Weiland and Dachselt and/or ACM Press

 
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Dachselt, Raimund, Frisch, Mathias and Decker, Eike (2008): Enhancing UML sketch tools with digital pens and paper. In: Proceedings of the ACM Symposium on Software Visualization 2008. pp. 203-204. Available online

Drawing diagrams is one of the most important activities during software development processes. A multitude of sketch-based diagram tools were developed to enhance sketching with digital features. However, these applications are not as flexible as paper and often obstruct spontaneous sketching. To overcome these drawbacks we suggest the usage of digital pens and paper in conjunction with sketch-based UML diagram tools. This paper deals with work in progress concerning the seamless integration of paper-based and digital UML-sketching. Amongst others, this includes special UML sketch books and paper palettes used in combination with tabletops.

© All rights reserved Dachselt et al. and/or ACM Press

 
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Frisch, Mathias, Dachselt, Raimund and Brckmann, Tobias (2008): Towards seamless semantic zooming techniques for UML diagrams. In: Proceedings of the ACM Symposium on Software Visualization 2008. pp. 207-208. Available online

Models become increasingly important for software development processes. Though there is a multitude of software modeling tools available, the handling of complex UML diagrams is still difficult. In particular, the visualization of a global overview and of logical interrelationships between certain elements arising from refinements of diagrams can be improved. We address these problems and propose the usage of semantic zooming with different levels of detail and describe intuitive interaction techniques to ease the navigation between different diagrams in software models.

© All rights reserved Frisch et al. and/or ACM Press

 
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Frisch, Mathias and Dachselt, Raimund (2008): Benefits of interactive display environments in the software development process. In: Proceedings of the 2008 International Workshop on Cooperative and Human Aspects of Software Engineering 2008. pp. 53-56. Available online

Models become increasingly important for software development processes. Though there is a multitude of software modeling tools available, the handling of diagrams is still difficult. To overcome these problems we propose the usage of novel visualization and interaction techniques for the software development process, including multi-touch displays, the integration of diagrams drawn by hand and the interaction through zoomable user interfaces.

© All rights reserved Frisch and Dachselt and/or ACM Press

2007
 
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Dachselt, Raimund and Frisch, Mathias (2007): Mambo: a facet-based zoomable music browser. In: Ojala, Timo (ed.) MUM 2007 - Proceedings of the 6th International Conference on Mobile and Ubiquitous Multimedia December 12-14, 2007, Oulu, Finland. pp. 110-117. Available online

 
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Dachselt, Raimund, Figueroa, Pablo, Lindt, Irma and Broll, Wolfgang (2007): Workshop 2: Mixed Reality User Interfaces: Specification, Authoring, Adaptation. In: Sherman, William R., Lin, Ming C. and Steed, Anthony (eds.) IEEE Virtual Reality Conference, VR 2007 10-14 March, 2007, Charlotte, NC, USA. pp. 324-325.

 
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Dachselt, Raimund and Hbner, Anett (2007): Three-dimensional menus: A survey and taxonomy. In Computers & Graphics, 31 (1) pp. 53-65. Available online

2006
 
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Dachselt, Raimund and Hbner, Anett (2006): A Survey and Taxonomy of 3D Menu Techniques. In: Lin, Ming and Hubbold, Roger J. (eds.) Proceedings of the 12th Eurographics Symposium on Virtual Environments - EGVE 2006 2006, Lisbon, Portugal. pp. 89-99. Available online

2001
 
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Dachselt, Raimund and Ebert, Jrgen (2001): Collapsible Cylindrical Trees: A Fast Hierarchical Navigation Technique. In: Proceedings of the IEEE Symposium on Information Visualization 2001 INFOVIS October, 2001, San Diego. pp. 79-86. Available online

This paper proposes a new visualization and interaction technique for medium-sized trees, called Collapsible Cylindrical Trees (CCT). Child nodes are mapped on rotating cylinders, which will be dynamically displayed or hidden to achieve a useful balance of detail and context. Besides a comprehensible three-dimensional visualization of trees, the main feature of CCT is a very fast and intuitive interaction with the displayed nodes. Just one click is needed to reach every node and perform an action on it such as displaying a web page. The CCT browsing technique was developed for interaction with web hierarchies but is not limited to this domain. We also present sample implementations of CCT using VRML, which show the usefulness of this intuitive tree navigation technique.

© All rights reserved Dachselt and Ebert and/or IEEE Computer Society Press

 
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Dachselt, Raimund and Ebert, Jrgen (2001): Collapsible Cylindrical Trees: A Fast Hierarchical Navigation Technique. In: InfoVis 2001 2001. pp. 79-86. Available online

 
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