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

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

    (Human–Computer Interaction Series)

    2023  

    Author's details by Wolfgang Aigner, Silvia Miksch, Heidrun Schumann, Christian Tominski
    Series title Human–Computer Interaction Series
    Keywords User interfaces (Computer systems) ; Human-computer interaction ; Information visualization
    Language English
    Size 1 Online-Ressource (XIX, 441 p. 307 illus., 250 illus. in color)
    Edition 2nd ed. 2023
    Publisher Springer London ; Imprint: Springer
    Publishing place London
    Document type Book ; 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
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Article ; Conference proceedings: 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  

    Event/congress EuroVA Workshop (4Leipzig:2013.06.17-18) ; International Eurovis Workshop on Visual Analytics (4Leipzig:2013.06.17-18)
    Size Getr. Zählung
    Document type Article ; Conference proceedings
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  3. Book ; 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
    Keywords Computer Science - Human-Computer Interaction ; Computer Science - Computer Vision and Pattern Recognition ; Electrical Engineering and Systems Science - Image and Video Processing ; I.3.8
    Subject code 004
    Publishing date 2022-12-13
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  4. Article ; 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  Volume 27, Issue 2, Page(s) 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.
    Language English
    Publishing date 2021-01-28
    Publishing country United States
    Document type Journal Article
    ISSN 1941-0506
    ISSN (online) 1941-0506
    DOI 10.1109/TVCG.2020.3030371
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: 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.
    Keywords aviation ; landscapes ; meteorology ; models ; mountains ; spatial data ; topography ; valleys ; weather
    Language English
    Dates of publication 2017-1114
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2655790-3
    ISSN 2220-9964
    ISSN 2220-9964
    DOI 10.3390/ijgi6110357
    Database NAL-Catalogue (AGRICOLA)

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  6. Book ; 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
    Keywords Computer Science - Human-Computer Interaction ; I.3.8
    Subject code 020
    Publishing date 2023-01-04
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  7. Book ; 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
    Keywords Computer Science - Human-Computer Interaction ; H.5.2
    Subject code 004
    Publishing date 2020-08-20
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Book ; Online ; Thesis: Visual analytics methods for retinal layers in optical coherence tomography data

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

    2020  

    Author's details Martin Röhlig ; Gutachter: Heidrun Schumann, Bernhard Preim
    Keywords Medizin, Gesundheit ; Medicine, Health
    Subject code sg610
    Language English
    Publisher Universität Rostock
    Publishing place Rostock
    Document type Book ; Online ; Thesis
    Database Digital theses on the web

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  9. Article ; 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.

    5

    1
    Keywords 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
    Subject code 006
    Language English
    Publishing date 2021-01-21
    Publisher Elsevier B.V.
    Publishing country de
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Book ; Conference proceedings: 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  

    Event/congress Dagstuhl Seminar: "Mobile Computing and Ambient Intelligence: The Challenge of Multimedia" (2005.05, Dagstuhl)
    Author's details guest ed.: Heidrun Schumann
    Series title Computers & graphics ; 30.2006,5
    Language English
    Size S. 679 - 884, Ill., graph. Darst
    Publisher Elsevier
    Publishing place Orlando u.a.
    Document type Book ; Conference proceedings
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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