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Implementing a zooming User Interface: experience building Pad++

Software: Practice and Experience 1999年第10期28卷

作者： Ben Bederson Jon Meyer Computer Science Department University of Maryland Human-Computer Interaction Lab 3171 A.V. Williams Building College Park MD 20742 USA Computer Science Department New York University Media Research Lab 719 Broadway 12th Floor New York NY 10003 USA

We are investigating a novel user interface paradigm based on zooming, in which users are presented with a zooming view of a huge planar information surface. We have developed a system called Pad++ to explore this approach. The implementation of Pad++ is related to real-time 3D graphics systems and to 2D windowing systems. However, the zooming nature of Pad++ requires new approaches to rendering, screen management, and spatial indexing. In this paper, we describe the design and implementation of the Pad++ engine, focusing in particular on rendering and data structure issues. Our goal is to present useful techniques that can be adopted in other real-time graphical systems, and also to discuss how 2D zooming systems differ from other graphical systems. © 1998 John Wiley & Sons, Ltd.

关键词： zooming User Interfaces (ZUIs) real-time computer graphics animation 3D graphics windowing systems User Interface Management Systems (UIMS) Pad++

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Network Communities, Community Networks 98

Network Communities, Community Networks

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1998 ACM Conference on human Factors and Computing Systems, CHI 1998

作者： Carroll, John M. Rosson, Mary Beth Computer Science Department Center for Human-Computer Interaction Virginia Tech BlacksburgVA24061 United States

ISBN: (纸本)1581130287

A network community is a group of people whose communication and collaboration over networks strengthens and facilitates their shared identity and goals. A community network is a special case of a network community in which a physical community coextends with the network community. This tutorial will survey and analyze network communities and community networks focusing on how they may impact human activities and institutions. © 1998. Copyright on this material is held by the author.

关键词： community networks

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Robust, End-User Programmable, Multiple-Window Coordination 98

Robust, End-User Programmable, Multiple-Window Coordination

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1998 ACM Conference on human Factors and Computing Systems, CHI 1998

作者： North, Chris Human-Computer Interaction Laboratory Department of Computer Science University of Maryland College ParkMD20742 United States

ISBN: (纸本)1581130287

In current windowing environments, individual windows are treated independently, making it difficult for users to coordinate information across multiple windows. While coordinated multi-window strategies are increasingly used in visualization and web user interfaces, designs are inflexible and haphazard. I propose a generalized, end-user programmable, robust, multiple-window coordination capability. This research involves generation of guidelines for robust coordination design, development of specification languages for end-user coordination, resolution of data structures, algorithms, and software architecture issues, and empirical evaluation. © 1998. Copyright on this material is held by the author.

关键词： User interfaces

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Using Elastic Windows for World-Wide Web Browsing 98

Using Elastic Windows for World-Wide Web Browsing

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1998 ACM Conference on human Factors and Computing Systems, CHI 1998

作者： Kandogan, Eser Shneiderman, Ben Department of Computer Science Human-Computer Interaction Laboratory Institute for Advanced Computer Studies University of Maryland College ParkMD20742 United States

ISBN: (纸本)1581130287

Current World-Wide Web browsers can be enhanced to support the navigation needs of users. In this video, a new browsing interface is demonstrated with hierarchical page organization and efficient multiple page operations. Users can quickly organize, filter and restructure pages as they reformulate their goals. Overviews can give the user asenseof location aswell asprovide fast accessto ahierarchy of pages. © 1998 Association for Computing Machinery. All rights reserved.

关键词： World Wide Web

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An iconic gesture is worth more than a thousand words

An iconic gesture is worth more than a thousand words

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International Conference on Information Visualisation (IV)

作者： T. Marsh Human Computer Interaction Group Department of Computer Science University of York UK

In our minds, we can create an imaginary environment of shapes and objects. A natural and intuitive way to externalize these imaginary shapes is through our hands by simply sketching or tracing their outline in space. If we could capture and then interpret our hand shapes, then we would be able to express spatial information in computer-generated graphical environments in a simple and extremely powerful way. This paper describes on-going research to employ iconic gestural-based human-computer interaction, which is a novel interaction technique for the input of spatial information.

关键词： Shape Handicapped aids Electrical capacitance tomography Power generation computer graphics Mice human computer interaction computer science Virtual reality Taxonomy

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PadPrints: graphical multiscale Web histories 98

PadPrints: graphical multiscale Web histories

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Proceedings of the 11th annual ACM symposium on User interface software and technology

作者： Ron R. Hightower Laura T. Ring Jonathan I. Helfman Benjamin B. Bederson James D. Hollan Computer Science Department University of New Mexico Albuquerque NM Computer Science Department. Human-Computer Interaction Lab University of Maryland Cognitive Science Department University of California San Diego

No abstract available.

ISBN: (纸本)9781581130348

No abstract available.

关键词： multiscale interfaces Web Browser Web navigation zooming user interface hypertext World Wide Web information visualization Pad++

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Data object and label placement for information abundant visualizations

Data object and label placement for information abundant vis...

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1998 Workshop on New Paradigms in Information Visualization and Manipulation, NPIV 1998

作者： Li, Jia Plaisant, Catherine Shneiderman, Ben Human-Computer Interaction Laboratory University of Maryland College ParkMD20742 United States Department of Computer Science University of Maryland College ParkMD20742 United States Institute for Systems Research University of Maryland College ParkMD20742 United States

ISBN: (纸本)1581131798

Placing numerous data objects and their corresponding labels in limited screen space is a challenging problem in information visualization systems. Extending map-oriented techniques, this paper describes static placement algorithms and develops metrics (such as compactness and labeling rate) as a basis for comparison among these algorithms. A control panel facilitates user customization by showing the metrics for alternative algorithms. Dynamic placement techniques that go beyond map-oriented techniques demonstrate additional possibilities. User actions can lead to selective display of data objects and their labels. Copyright ACM 2000.

关键词： Visualization

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Two-Handed Virtual Manipulation

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ACM Transactions on computer-human interaction 1998年第3期5卷 260-302页

作者： Hinckley, Ken Pausch, Randy Proffitt, Dennis Kassell, Neal F. Microsoft Research Redmond One Microsoft Way WA 98052 United States Human-Computer Interaction Institute School of Computer Science School of Design Carnegie Mellon University Pittsburgh 5000 Forbes Avenue PA 15213-3891 United States Department of Psychology University of Virginia Charlottesville VA 22903 United States Virginia Neurological Institute and Department of Neurological Surgery University of Virginia Charlottesville VA 22903 United States

We discuss a two-handed user interface designed to support three-dimensional neurosurgical visualization. By itself, this system is a “point design,” an example of an advanced user interface technique. In this work, we argue that in order to understand why interaction techniques do or do not work, and to suggest possibilities for new techniques, it is important to move beyond point design and to introduce careful scientific measurement of human behavioral principles. In particular, we argue that the common-sense viewpoint that “two hands save time by working in parallel” may not always be an effective way to think about two-handed interface design because the hands do not necessarily work in parallel (there is a structure to two-handed manipulation) and because two hands do more than just save time over one hand (two hands provide the user with more information and can structure how the user thinks about a task). To support these claims, we present an interface design developed in collaboration with neurosurgeons which has undergone extensive informal usability testing, as well as a pair of formal experimental studies which investigate behavioral aspects of two-handed virtual object manipulation. Our hope is that this discussion will help others to apply the lessons learned in our neurosurgery application to future two-handed user interface designs. © 1998, ACM. All rights reserved.

关键词： Bimanual asymmetry Design Experimentation haptic input human Factors input devices Measurement three-dimensional interaction two-handed interaction virtual manipulation

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The end of zero-hit queries: Query previews for NASA's global change master directory

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International Journal on Digital Libraries 1998年第2-3期2.0卷 79-90页

作者： Greene, Stephan Tanin, Egemen Plaisant, Catherine Shneiderman, Ben Olsen, Lola Major, Gene Johns, Steve Human-Computer Interaction Laboratory University of Maryland Institute for Advanced Computer Studies College Park MD 20742 A.V. Williams building United States Department of Computer Science University of Maryland College Park MD 20742 A.V. Williams building United States NASA Goddard Space Flight Center Greenbelt MD 20770 Code 902 United States Global Change Master Directory Raytheon ITSS Lanham MD 20706 4500 Forbes Blvd United States

The human-computer interaction laboratory (HCIL) of the University of Maryland and NASA have collaborated over three years to refine and apply user interface research concepts developed at HCIL in order to improve the usability of NASA data services. The research focused on dynamic query user interfaces, visualization, and overview + preview designs. An operational prototype, using query previews, was implemented with NASA's Global Change Master Directory (GCMD), a directory service for earth science datasets. Users can see the histogram of the data distribution over several attributes and choose among attribute values. A result bar shows the cardinality of the result set, thereby preventing users from submitting queries that would have zero hits. Our experience confirmed the importance of metadata accuracy and completeness. The query preview interfaces make visible the problems or gaps in the metadata that are undetectable with classic form fill-in interfaces. This could be seen as a problem, but we think that it will have a long-term beneficial effect on the quality of the metadata as data providers will be compelled to produce more complete and accurate metadata. The adaptation of the research prototype to the NASA data required revised data structures and algorithms. © Springer-Verlag 1999.

关键词： Browsing Earth science Graphical user interface Metadata Query preview

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A camera control interface based on the visualization of subspaces of the 6D motion space of the camera

A camera control interface based on the visualization of sub...

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Pacific Conference on computer Graphics and Applications

作者： Moon-Ryul Jung Doowon Paik Donghyun Kim Department of Computer Science Soongsil University Seoul South Korea Virtual Space Team Human Computing Division Computer Software Tech. Lab. ETRI South Korea

ISBN: (纸本)0818686200

The paper describes a camera control interface for the exploration of 3D virtual space implemented by using a 2D input device, a joystick. The interface uses a helicopter maneuver metaphor: the viewpoint of the virtual camera is controlled as if the user sits in a helicopter and controls its motion. To control the helicopter by a 2D input device, the 6D space of the helicopter motion is decomposed into six 2D subspaces. The 2D subspaces are visualized by means of the helicopter model and some auxiliary means, e.g. plane meshes and circles, to suggest the kind of motion allowed in each subspace. The visualized subspaces are used as camera control widgets controlled by the 2D input device. The six widgets are arranged so that the transition from one widget to another may be performed by one movement of the input device. This interface provides a simple and consistent kinesthetic correspondence between the movement of the joystick and the motion of the helicopter i.e. the virtual camera. We have conducted an evaluation of our camera control interface through a questionnaire study. Though it indicates that users of different levels find our interface easier to use compared to other interfaces, we need more rigorous evaluation studies to prove it. The main claim of the paper is that the proposed interface has a cleaner and more logical design obtained by strictly following a good design principle, i.e. systematic decomposition and intuitive visual clues.

关键词： Cameras Motion control Visualization computer aided manufacturing CADCAM Helicopters computer science humans Software Programmable logic arrays

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