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Auflistung nach Schlagwort "reconstruction"

1 - 5 von 5
  • Konferenzbeitrag
    Comparison Between Video-mediated and Asymmetric 3D Teleconsultation During a Preclinical Scenario
    (Mensch und Computer 2021 - Tagungsband, 2021) Strak, Robin; Yu, Kevin; Pankratz, Frieder; Lazarovici, Marc; Sandmeyer, Benedikt; Reichling, Julia; Weidert, Simon; Kraetsch, Clemens; Roegele, Barbara; Navab, Nassir; Eck, Ulrich; Roth, Daniel
    Current teleconsultation solutions for preclinical emergencies can transmit knowledge from a remote expert to a local paramedic using audio and 2D video channels. Such technology lacks precision and efficiency for medical diagnostic tasks, and visual feedback is often missing between participants. We investigate a mixed reality 3D teleconsultation solution for preclinical use, which provides a 3D reconstruction of the local scene to a remote expert, displayed in Virtual Reality. A remote expert can join the local scene virtually as an Augmented Reality avatar. The remote expert can annotate the local scene and guide the local paramedics through the procedure. We explored our system in a user study within a preclinical scenario on a collaborative task of attaching chest lead electrodes of a 12 channel electrocardiogram on a mannequin. We compared the 3D teleconsultation system to a 2D video-mediated teleconsultation via a top-mounted camera and report results from the consultee side in AR. Based on our empirical user study with 10 paramedics with an average of 17 years experience, we observe an improvement in the electrode placement quality using the 3D teleconsultation system. Results indicate no significant difference in the cognitive task-load between conditions. Participants perceived the video-mediated consultation as more usable due to their unfamiliarity with the 3D teleconsultation system. However, participants acknowledge the potential of 3D teleconsultation and believe such a system can significantly improve the preclinical treatment.
  • Workshopbeitrag
    Exploring the Benefits of Holographic Mixed Reality for Preoperative Planning with 3D Medical Images
    (Mensch und Computer 2019 - Workshopband, 2019) Mast, Marcus; Kaup, Ina; Krüger, Sebastian; Ullrich, Christian; Schneider, Robert; Bay, Susanne
    Today surgeons usually prepare for operations by inspecting sets of 2D radiological images. This means that they need to form a 3D mental model from 2D data. The lack of depth perception afforded by 2D images is an issue especially in complex cases. New and improved approaches are therefore an area of active research. Recent advances in both holographic mixed reality and 3D visualization techniques represent an interesting opportunity to address this issue. The article describes our ongoing efforts to support surgeons in preoperative planning by developing a medical volume viewer for Microsoft’s HoloLens 2 headset. The app combines the state-of-the art image quality of cinematic volume rendering with the excellent depth perception in holographic headsets and will allow new ways of planning surgeries and interacting with medical volumes.
  • Konferenzbeitrag
    Intuitive Erzeugung von 3D-Modellen mit handgehaltenen Sensoren
    (Mensch & Computer 2014 - Tagungsband, 2014) Sand, Maximilian; Henrich, Dominik
    Aufgrund der weit verbreiteten Verwendung von dreidimensionalen Computermodellen ist es wünschenswert, dass auch ungeübte Personen leicht ein digitales Modell eines realen Objektes oder einer Szene mit einem handgehaltenen Sensor erstellen können. Dazu wird eine Benutzerschnittstelle vorgestellt, die dem Anwender während der Aufnahme eine dreidimensionale Live-Rekonstruktion anzeigt, in die Hinweise zur Unterstützung des Aufnahmevorgangs eingeblendet werden. Unter Berücksichtigung von Verdeckungen wird der Nutzer auf noch nicht erfasste Bereiche hingewiesen. Dadurch kann der Aufnahmevorgang beschleunigt werden.
  • Zeitschriftenartikel
    Maintainability is a Versatile Quality Attribute
    (Softwaretechnik-Trends Band 36, Heft 3, 2016) Knodel, Jens; Naab, Matthias
    Software architecture evaluation has been widely accepted as a powerful means to mitigate risks in the design and evolution of software systems. To date we have conducted more than 75 architecture evaluation projects with industrial customers in the past decade. One recurring lesson learned that we experienced across many architecture evaluation projects is that maintainability indeed is a versatile quality attribute and its evaluation requires a mix of quantitative and qualitative checks.
  • Konferenzbeitrag
    A Systematic Approach for Comparing and Reusing Design Alternatives
    (Softwaretechnik-Trends Band 25, Heft 2, 2005) Knodel, Jens; Forster, Thomas; Girard, Jean-François
    This work introduces an approach to mine field-tested design solutions when defining the architecture of a new product line. The design comparison approach (DCA) compares design solution alternatives implemented in existing systems and evaluates their advantages and drawbacks. This explicit comparison and analysis enables the development of high quality product line architectures by incorporating field-tested, proven concepts and strategies. The experiences gained so far in case studies support the claim that the resulting architecture profits from the application of the DCA approach.