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International Conference on Image Analysis and Processing

作者： Du-Sik Park Jong-Seung Park Tae Yong Kim Joon Hee Han Department of Computer Science and Engineering POSTECH Pohang South Korea Signal Processing Laboratory Samsung Advanced Institute of Science and Technology Yongin si South Korea Human Computing Research Department Electronics and Telecommunications Research Institute Daejeon South Korea

Image indexing is the process of image retrieval from databases of images or videos based on their contents. Specifically histogram-based algorithms are considered to be effective for color image indexing. We suggest a new method of color space quantization in the CIELUV color space, named weighted LUV quantization. With this method, each bin in the LUV space has a different weighting factor, which is applied to the histogram intersection. The weighted LUV histogram intersection provides the advantage of perceptual uniformity of the CIELUV color space. An additional advantage is the consideration of perceptual sensitivity to more saturated colors by the use of a weighting factor.

关键词： Indexing Histograms Quantization Information retrieval Image retrieval Image databases Signal processing humans computer science Data engineering

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Elastic windows: design, implementation, and evaluation of multi-window operations

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Software: Practice and Experience 1999年第3期28卷

作者： Eser Kandogan Ben Shneiderman Department of Computer Science Human-Computer Interaction Laboratory MD 20742 U.S.A. Institute for Advanced Computer Studies University of Maryland College Park MD 20742 U.S.A.

Most windowing systems follow the independent overlapping windows approach, which emerged as an answer to the needs of early computer users. Due to advances in computers, display technology, and increased information needs, modern users demand more functionality from window management systems. We propose Elastic Windows with improved spatial layout and rapid multi-window operations as an alternative to current window management strategies. In this approach, multi-window operations are achieved by issuing operations on window groups hierarchically organized in a space-filling tiled layout similar to TreeMaps. 1 Sophisticated multi-window operations have been developed to handle fast task-switching and to structure the work environment of users to their rapidly changing needs. We claim that these multi-window operations and the tiled spatial layout dynamics decrease the cognitive load on users by decreasing the number of window operations. This paper describes the Elastic Windows interface in detail and then presents a user study conducted to compare the performance of 12 users with Elastic Windows and traditional Independent Overlapping Windows. User performance was measured in terms of task environment setup, switching, and task execution for 2, 6, and 12 window situations. Elastic Windows users had statistically significantly faster performance for all tasks in 6 and 12 window situations. These results suggest promising possibilities for multiple window operations and hierarchical nesting, which can be applied to the next generation of tiled as well as overlapped window managers. © 1998 John Wiley & Sons, Ltd.

关键词： window management multi-window operations hierarchical windows personal role management world wide web windowing system evaluation

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Features and performance of a tomographic algorithm, based on a random walk model, for quantification of the optical characteristics of an abnormality embedded within tissue-like turbid media

Features and performance of a tomographic algorithm, based o...

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Biomedical Topical Meeting, BIOMED 1999

作者： Chernomordik, Victor Hattery, David Gandjbakhche, Amir H. Pifferi, Antonio Taroni, Paola Torricelli, Alessandro Valentini, Gianluca Cubeddu, Rinaldo Hebden, Jeremy C. Laboratory of Integrative and Medical Biophysics National Institute of Child Health and Human Development National Institutes of Health BethesdaMD20892 United States George Washington University Department of Electrical Engineering and Computer Science WashingtonDC20052 United States Department of Physics Politecnico di Milano Piazza Leonardo da Vinci 32 Milano1-20133 Italy Department of Medical Physics University College London 11-20 Capper Street LondonWC1E 6JA United Kingdom

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Implementing a zooming User Interface: experience building Pad++

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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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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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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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Codex, Memex, Genex: The Pursuit of Transformational Technologies 98

Codex, Memex, Genex: The Pursuit of Transformational Technol...

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

作者： Shneiderman, Ben Dept. of Computer Science Human-Computer Interaction Laboratory University of Maryland College ParkMD20742 United States

ISBN: (纸本)1581130287

Handwritten codexes or printed books transformed society by allowing users to preserve and transmit information. Today, leather-bound volumes and illuminated manuscripts are giving way to animated image maps and hot links. Vannevar Bush's memex has inspired the World Wide Web, which provides users with vast information resources and convenient communications. In looking to the future, we might again transform society by building genexes - generators of excellence - to support creative exploration of ideas. Thesauri are to words, as genexes are to ideas. Such inspirational environments would empower personal and collaborative creativity by enabling users to: • collect information from an existing domain of knowledge, • create innovations using advanced tools, • consult with peers or mentors in the field, and then • disseminate the results widely. This paper describes how a framework for an integrated set of software tools might support this four-phase model of creativity in science, medicine, the arts, and beyond. Current initiatives are positive and encouraging, but they do not work in an integrated fashion, often miss vital components, and are frequently poorly designed. A well-conceived and clearly-stated framework could guide design efforts, coordinate planning, and speed development. © 1998. Copyright on this material is held by the author.

关键词： Graphical user interfaces

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Edited and Adaptive Information Filtering 4

Edited and Adaptive Information Filtering

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4th International Conference on Intelligent User Interfaces, IUI 1999

作者： Waern, Annika Tierney, Mark Rudsström, Åsa Laaksolahti, Jarmo Swedish Institute of Computer Science Human Computer Interaction and Language Engineering Laboratory Box 1263 KistaSE-164 29 Sweden

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WebTOC: A Tool to Visualize and Quantify Web Sites using a Hierarchical Table of Contents Browser 98

WebTOC: A Tool to Visualize and Quantify Web Sites using a H...

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

作者： Nation, David A. Department of Defense Human-Computer Interaction Laboratory University of Maryland College ParkMD20742 United States

ISBN: (纸本)1581130287

WebTOC is a method for visualizing the contents of a website with a hierarchical table of contents using a java program and applet. WebTOC automatically generates an expand/contract table of contents that provides graphical information indicating the number of elements on branches of the hierarchy as well as elements' individual and cumulative sizes. Colors can be used to represent other attributes such as file type and provide a rich overview of the site for users and managers of the site. Early results from user studies suggest that WebTOC is easily learned and can assist users in navigating websites. © 1998 Association for Computing Machinery. All rights reserved.

关键词： Websites

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