Journal: IEEE Transactions on Visualization and Computer Graphics

Abbreviation

IEEE trans. vis. comput. graph.

Publisher

IEEE

Journal Volumes

ISSN

1077-2626
1941-0506
2160-9306

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Publications 1 - 10 of 82
  • Conjoint Analysis for Measuring the Perceived Quality in Volume Rendering
    Item type: Conference Paper
    Giesen, Joachim; Mueller, Klaus; Schuberth, Eva; et al. (2007)
    IEEE Transactions on Visualization and Computer Graphics
  • Controllers or Bare Hands? A Controlled Evaluation of Input Techniques on Interaction Performance and Exertion in Virtual Reality
    Item type: Journal Article
    Luong, Tiffany; Cheng, Yi Fei; Möbus, Max; et al. (2023)
    IEEE Transactions on Visualization and Computer Graphics
    Virtual Reality (VR) systems have traditionally required users to operate the user interface with controllers in mid-air. More recent VR systems, however, integrate cameras to track the headset's position inside the environment as well as the user's hands when possible. This allows users to directly interact with virtual content in mid-air just by reaching out, thus discarding the need for hand-held physical controllers. However, it is unclear which of these two modalities - controller-based or free-hand interaction - is more suitable for efficient input, accurate interaction, and long-term use under reliable tracking conditions. While interacting with hand-held controllers introduces weight, it also requires less finger movement to invoke actions (e.g., pressing a button) and allows users to hold on to a physical object during virtual interaction. In this paper, we investigate the effect of VR input modality (controller vs. free-hand interaction) on physical exertion, agency, task performance, and motor behavior across two mid-air interaction techniques (touch, raycast) and tasks (selection, trajectory-tracing). Participants reported less physical exertion, felt more in control, and were faster and more accurate when using VR controllers compared to free-hand interaction in the raycast setting. Regarding personal preference, participants chose VR controllers for raycast but free-hand interaction for mid-air touch. Our correlation analysis revealed that participants' physical exertion increased with selection speed, quantity of arm motion, variation in motion speed, and bad postures, following ergonomics metrics such as consumed endurance and rapid upper limb assessment. We also found a negative correlation between physical exertion and the participant's sense of agency, and between physical exertion and task accuracy.
  • Hyper-Objective Vortices
    Item type: Journal Article
    Günther, Tobias; Theisel, Holger (2020)
    IEEE Transactions on Visualization and Computer Graphics
  • Automated Aesthetic Analysis of Photographic Images
    Item type: Journal Article
    Aydın, Tunç Ozan; Smolic, Aljoscha; Gross, Markus (2015)
    IEEE Transactions on Visualization and Computer Graphics
  • Extraction and Visual Analysis of Potential Vorticity Banners around the Alps
    Item type: Journal Article
    Bader, Robin; Sprenger, Michael; Ban, Nikolina; et al. (2020)
    IEEE Transactions on Visualization and Computer Graphics
  • Fourier Opacity Optimization for Scalable Exploration
    Item type: Journal Article
    Baeza Rojo, Irene; Gross, Markus; Günther, Tobias (2020)
    IEEE Transactions on Visualization and Computer Graphics
    Over the past decades, scientific visualization became a fundamental aspect of modern scientific data analysis. Across all data-intensive research fields, ranging from structural biology to cosmology, data sizes increase rapidly. Dealing with the growing large-scale data is one of the top research challenges of this century. For the visual exploratory data analysis, interactivity, a view-dependent visibility optimization and frame coherence are indispensable. In this work, we extend the recent decoupled opacity optimization framework to enable a navigation without occlusion of important features through large geometric data. By expressing the accumulation of importance and optical depth in Fourier basis, the computation, evaluation and rendering of optimized transparent geometry become not only order-independent, but also operate within a fixed memory bound. We study the quality of our Fourier approximation in terms of accuracy, memory requirements and efficiency for both the opacity computation, as well as the order-independent compositing. We apply the method to different point, line and surface data sets originating from various research fields, including meteorology, health science, astrophysics and organic chemistry.
  • Vector Field Topology of Time-Dependent Flows in a Steady Reference Frame
    Item type: Journal Article
    Baeza Rojo, Irene; Günther, Tobias (2020)
    IEEE Transactions on Visualization and Computer Graphics
  • MineTime Insight: Visualizing Meeting Habits to Promote Informed Scheduling Decisions
    Item type: Journal Article
    Ancona, Marco; Beyeler, Marilou; Günther, Tobias; et al. (2021)
    IEEE Transactions on Visualization and Computer Graphics
    Corporate meetings are a crucial part of business activities. While numerous academic papers investigated how to make the scheduling process of meetings faster or even automatic, little work has been done yet to facilitate the retrospective reasoning about how time is spent on meetings. Traditional calendar applications do not allow users to extract actionable statistics although it has been shown that reflection-oriented design can increase the users’ understanding of their habits and can thereby encourage a shift towards better practices. In this paper, we present MineTime Insight , a tool made of multiple coordinated views for the exploration of personal calendar data, with the overarching goal of improving short and long-term scheduling decisions. Despite being focused on the working environment, our work builds upon recent results in the field of Personal Visual Analytics, as it targets users not necessarily expert in visualization and data analysis. We demonstrate the potential of MineTime Insight, when applied to the agenda of an executive manager. Finally, we discuss the results of an informal user study and a field study. Our results suggest that our visual representations are perceived as easy to understand and helpful towards a change in the scheduling habits.
  • A Framework for Holographic Scene Representation and Image Synthesis
    Item type: Journal Article
    Ziegler, Remo; Kaufmann, Peter; Gross, Markus (2007)
    IEEE Transactions on Visualization and Computer Graphics
  • Multiverse data-flow control
    Item type: Journal Article
    Schindler, Benjamin; Waser, Jürg; Ribičić, Hrvoje; et al. (2013)
    IEEE Transactions on Visualization and Computer Graphics
Publications 1 - 10 of 82