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  1. Buch ; Online: Visualization of Time-Oriented Data

    Aigner, Wolfgang / Miksch, Silvia / Schumann, Heidrun / Tominski, Christian

    (Human–Computer Interaction Series)

    2023  

    Verfasserangabe by Wolfgang Aigner, Silvia Miksch, Heidrun Schumann, Christian Tominski
    Serientitel Human–Computer Interaction Series
    Schlagwörter User interfaces (Computer systems) ; Human-computer interaction ; Information visualization
    Sprache Englisch
    Umfang 1 Online-Ressource (XIX, 441 p. 307 illus., 250 illus. in color)
    Ausgabenhinweis 2nd ed. 2023
    Verlag Springer London ; Imprint: Springer
    Erscheinungsort London
    Dokumenttyp Buch ; Online
    HBZ-ID HT030624285
    ISBN 978-1-4471-7527-8 ; 9781447175261 ; 9781447175285 ; 9781447175292 ; 1-4471-7527-1 ; 1447175263 ; 144717528X ; 1447175298
    DOI 10.1007/978-1-4471-7527-8
    Datenquelle ZB MED Katalog Medizin, Gesundheit, Ernährung, Umwelt, Agrar

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  2. Artikel ; Konferenzbeitrag: Special sections in this issue: computer graphics in Brazil: a selection of papers from SIBGRAPI 2012

    Schumann, Heidrun

    Special sections in this issue: computer graphics in Brazil: a selection of papers from SIBGRAPI 2012, [... 25th ... Conference on Graphics, Patterns and Images ... Ouro Preto, Minas Gerais, Brazil ... three papers], Sasso Freitas, Dal, Carla. - Amsterdam [u.a.] : Elsevier

    2014  

    Veranstaltung/Kongress EuroVA Workshop (4Leipzig:2013.06.17-18) ; International Eurovis Workshop on Visual Analytics (4Leipzig:2013.06.17-18)
    Umfang Getr. Zählung
    Dokumenttyp Artikel ; Konferenzbeitrag
    Datenquelle Katalog der Technische Informationsbibliothek Hannover

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  3. Buch ; Online: Visual Analytics for Early Detection of Retinal Diseases

    Röhlig, Martin / Stachs, Oliver / Schumann, Heidrun

    2022  

    Abstract: Advances in optical coherence tomography (OCT) have enabled noninvasive imaging of substructures of the human retina with high spatial resolution. OCT examinations are now a standard procedure in clinics and an integral part of ophthalmic research. The ... ...

    Abstract Advances in optical coherence tomography (OCT) have enabled noninvasive imaging of substructures of the human retina with high spatial resolution. OCT examinations are now a standard procedure in clinics and an integral part of ophthalmic research. The interpretation of the OCT helps ophthalmologists understand the impact of various retinal and systemic diseases on the structure of the retina in a way not previously possible. In the early stages of retinal diseases, however, the identification and analysis of small and localized substructural changes in the retina remains a challenge. We present an overview of novel visual analytics approaches for the interactive exploration of early retinal changes in single and multiple patients, the comparison of the changes with normative data, and automated quantification and measurement of diagnosis-relevant information. We developed these approaches in close collaboration with ophthalmology researchers and industry experts from a leading OCT device manufacturer. As a result, they not only significantly reduced the time and effort required for OCT data analysis, especially in the context of cross-sectional studies, but have also led to several new discoveries published in biomedical journals.

    Comment: 5 pages, 5 figures
    Schlagwörter Computer Science - Human-Computer Interaction ; Computer Science - Computer Vision and Pattern Recognition ; Electrical Engineering and Systems Science - Image and Video Processing ; I.3.8
    Thema/Rubrik (Code) 004
    Erscheinungsdatum 2022-12-13
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

    Volltext online

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  4. Artikel ; Online: Responsive Matrix Cells: A Focus+Context Approach for Exploring and Editing Multivariate Graphs.

    Horak, Tom / Berger, Philip / Schumann, Heidrun / Dachselt, Raimund / Tominski, Christian

    IEEE transactions on visualization and computer graphics

    2021  Band 27, Heft 2, Seite(n) 1644–1654

    Abstract: Matrix visualizations are a useful tool to provide a general overview of a graph's structure. For multivariate graphs, a remaining challenge is to cope with the attributes that are associated with nodes and edges. Addressing this challenge, we propose ... ...

    Abstract Matrix visualizations are a useful tool to provide a general overview of a graph's structure. For multivariate graphs, a remaining challenge is to cope with the attributes that are associated with nodes and edges. Addressing this challenge, we propose responsive matrix cells as a focus+context approach for embedding additional interactive views into a matrix. Responsive matrix cells are local zoomable regions of interest that provide auxiliary data exploration and editing facilities for multivariate graphs. They behave responsively by adapting their visual contents to the cell location, the available display space, and the user task. Responsive matrix cells enable users to reveal details about the graph, compare node and edge attributes, and edit data values directly in a matrix without resorting to external views or tools. We report the general design considerations for responsive matrix cells covering the visual and interactive means necessary to support a seamless data exploration and editing. Responsive matrix cells have been implemented in a web-based prototype based on which we demonstrate the utility of our approach. We describe a walk-through for the use case of analyzing a graph of soccer players and report on insights from a preliminary user feedback session.
    Sprache Englisch
    Erscheinungsdatum 2021-01-28
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1941-0506
    ISSN (online) 1941-0506
    DOI 10.1109/TVCG.2020.3030371
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel: Visualization of Features in 3D Terrain

    Dübel, Steve / Schumann, Heidrun

    ISPRS international journal of geo-information. 2017 Nov. 14, v. 6, no. 11

    2017  

    Abstract: In 3D terrain analysis, topographical characteristics, such as mountains or valleys, and geo-spatial data characteristics, such as specific weather conditions or objects of interest, are important features. Visual representations of these features are ... ...

    Abstract In 3D terrain analysis, topographical characteristics, such as mountains or valleys, and geo-spatial data characteristics, such as specific weather conditions or objects of interest, are important features. Visual representations of these features are essential in many application fields, e.g., aviation, meteorology, or geo-science. However, creating suitable representations is challenging. On the one hand, conveying the topography of terrain models is difficult, due to data complexity and computational costs. On the other hand, depicting further geo-spatial data increases the intricacy of the image and can lead to visual clutter. Moreover, perceptional issues within the 3D presentation, such as distance recognition, play a significant role as well. In this paper, we address the question of how features in the terrain can be visualized appropriately. We discuss various design options to facilitate the awareness of global and local features; that is, the coarse spatial distribution of characteristics and the fine-granular details. To improve spatial perception of the 3D environment, we propose suitable depth cues. Finally, we demonstrate the feasibility of our approach by a sophisticated framework called TedaVis that unifies the proposed concepts and facilitates designing visual terrain representations tailored to user requirements.
    Schlagwörter aviation ; landscapes ; meteorology ; models ; mountains ; spatial data ; topography ; valleys ; weather
    Sprache Englisch
    Erscheinungsverlauf 2017-1114
    Erscheinungsort Multidisciplinary Digital Publishing Institute
    Dokumenttyp Artikel
    ZDB-ID 2655790-3
    ISSN 2220-9964
    ISSN 2220-9964
    DOI 10.3390/ijgi6110357
    Datenquelle NAL Katalog (AGRICOLA)

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  6. Buch ; Online: Towards a Unified User Interface for Visual Analysis of Retinal Data in Ophthalmology

    Röhlig, Martin / Nonnemann, Lars / Schulz, Hans-Jörg / Stachs, Oliver / Schumann, Heidrun

    2023  

    Abstract: The visual analysis of retinal data contributes to the understanding of a wide range of eye diseases. For the evaluation of cross-sectional studies, ophthalmologists rely on workflows and toolsets established in their work environment. That is, they know ...

    Abstract The visual analysis of retinal data contributes to the understanding of a wide range of eye diseases. For the evaluation of cross-sectional studies, ophthalmologists rely on workflows and toolsets established in their work environment. That is, they know what tools and data are needed at each step of their workflow. Yet, manually operating the various tools, including activation, data handling, or view arrangement, can be cumbersome and time-consuming. We thus introduce a new visualization-supported toolchaining approach that combines workflow, tools, and data. First, we provide access to the tools required for each step of the workflow. Second, we handle the exchange of data between these tools. Third, we organize the views of the tools on screen using suitable layouts. Fourth, we visualize the connection between workflow, tools, and data to support the data analysis. We demonstrate our approach with a use case in ophthalmic research and report on initial feedback from experts.

    Comment: 12 pages, 4 figures
    Schlagwörter Computer Science - Human-Computer Interaction ; I.3.8
    Thema/Rubrik (Code) 020
    Erscheinungsdatum 2023-01-04
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  7. Buch ; Online: Varying Annotations in the Steps of the Visual Analysis

    Schmidt, Christoph / Rosenthal, Paul / Schumann, Heidrun

    2020  

    Abstract: Annotations in Visual Analytics (VA) have become a common means to support the analysis by integrating additional information into the VA system. That additional information often depends on the current process step in the visual analysis. For example, ... ...

    Abstract Annotations in Visual Analytics (VA) have become a common means to support the analysis by integrating additional information into the VA system. That additional information often depends on the current process step in the visual analysis. For example, the data preprocessing step has data structuring operations while the data exploration step focuses on user interaction and input. Describing suitable annotations to meet the goals of the different steps is challenging. To tackle this issue, we identify individual annotations for each step and outline their gathering and design properties for the visual analysis of heterogeneous clinical data. We integrate our annotation design into a visual analysis tool to show its applicability to data from the ophthalmic domain. In interviews and application sessions with experts we asses its usefulness for the analysis of patients with different medications.

    Comment: 9 Pages, 4 Figures
    Schlagwörter Computer Science - Human-Computer Interaction ; H.5.2
    Thema/Rubrik (Code) 004
    Erscheinungsdatum 2020-08-20
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    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  8. Buch ; Online ; Dissertation / Habilitation: Visual analytics methods for retinal layers in optical coherence tomography data

    Röhlig, Martin [Verfasser] / Schumann, Heidrun [Gutachter] / Preim, Bernhard [Gutachter]

    2020  

    Verfasserangabe Martin Röhlig ; Gutachter: Heidrun Schumann, Bernhard Preim
    Schlagwörter Medizin, Gesundheit ; Medicine, Health
    Thema/Rubrik (Code) sg610
    Sprache Englisch
    Verlag Universität Rostock
    Erscheinungsort Rostock
    Dokumenttyp Buch ; Online ; Dissertation / Habilitation
    Datenquelle Digitale Dissertationen im Internet

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  9. Artikel ; Online: A theoretical model for pattern discovery in visual analytics

    Andrienko, Natalia / Andrienko, Gennady / Miksch, Silvia / Schumann, Heidrun / Wrobel, Stefan

    2021  

    Abstract: 23 ... 42 ... The word 'pattern' frequently appears in the visualisation and visual analytics literature, but what do we mean when we talk about patterns? We propose a practicable definition of the concept of a pattern in a data distribution as a combination ...

    Abstract 23

    42

    The word 'pattern' frequently appears in the visualisation and visual analytics literature, but what do we mean when we talk about patterns? We propose a practicable definition of the concept of a pattern in a data distribution as a combination of multiple interrelated elements of two or more data components that can be represented and treated as a unified whole. Our theoretical model describes how patterns are made by relationships existing between data elements. Knowing the types of these relationships, it is possible to predict what kinds of patterns may exist. We demonstrate how our model underpins and refines the established fundamental principles of visualisation. The model also suggests a range of interactive analytical operations that can support visual analytics workflows where patterns, once discovered, are explicitly involved in further data analysis.

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    Schlagwörter Visual analytics ; Data distribution ; Pattern ; Abstraction ; Data arrangement ; Data organisation ; Data variation ; Pattern discovery ; DDC::000 Informatik ; Informationswissenschaft ; allgemeine Werke::000 Informatik ; Wissen ; Systeme::005 Computerprogrammierung ; Programme ; Daten ; Systeme::006 Spezielle Computerverfahren ; DDC::600 Technik ; Medizin ; angewandte Wissenschaften::620 Ingenieurwissenschaften::629 Andere Fachrichtungen der Ingenieurwissenschaften
    Thema/Rubrik (Code) 006
    Sprache Englisch
    Erscheinungsdatum 2021-01-21
    Verlag Elsevier B.V.
    Erscheinungsland de
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  10. Buch ; Konferenzbeitrag: Mobile computing and ambient intelligence

    Schumann, Heidrun

    [In May 2005 ... a Dagstuhl Seminar titled "Mobile Computing and Ambient Intelligence: The Challenge of Multimedia"]

    (Computers & graphics ; 30.2006,5)

    2004  

    Veranstaltung/Kongress Dagstuhl Seminar: "Mobile Computing and Ambient Intelligence: The Challenge of Multimedia" (2005.05, Dagstuhl)
    Verfasserangabe guest ed.: Heidrun Schumann
    Serientitel Computers & graphics ; 30.2006,5
    Sprache Englisch
    Umfang S. 679 - 884, Ill., graph. Darst
    Verlag Elsevier
    Erscheinungsort Orlando u.a.
    Dokumenttyp Buch ; Konferenzbeitrag
    Datenquelle Katalog der Technische Informationsbibliothek Hannover

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