Fakultäten » Mathematisch-naturwissenschaftliche Fakultät » Geographisches Institut » Geographic Information Science » Dr. Arzu Coltekin » Coltekin

Completed research project

Title / Titel VISDOM: Vision to Visualization - Improving computational and human performance with highly realistic three-dimensional geographic visualizations by means of biomimicry
PDF Abstract (PDF, 14 KB)
Summary / Zusammenfassung This is a three year project that employs one PhD student (Ms. Ismini-Eleni Lokka) which focuses on user experiences with highly realistic three-dimensional (3D) representations and virtual/augmented reality within the Digital Earth framework. The specific focus of the project is exploring the interactions between aging, memory and realistic 3D visualizations.

3D representations are visually attractive as well as necessary in many tasks. The realism that comes with 3D provides immersion and sense-of-presence, which are useful for experiencing places we cannot easily visit (e.g. Mars) or times we can no longer go back (e.g. historical Rome). The third dimension can also provide additional display space to represent complex geographic information. But 3D is also troubling as it requires more computational resources and bandwidth from information processors (that is, both machines and humans). In this project, we address complexity (too much information), ambiguity (illusions) and performance problems tied with 3D visualizations, as well as fatigue/discomfort issues with stereo-3D displays.

One of the larger goals in this project is to provide a better understanding of the usefulness of three dimensional (3D) representations and virtual/augmented reality for complex geographic tasks. Such realistic 3D visualizations allows us to get a sense of place, and has been promoted in global efforts such as in the Digital Earth initiative. However, usefulness of the 3D representations are debated from perceptual and cognitive perspectives. Studies have shown that people may make more mistakes and execute certain tasks slower in comparison to abstract and two-dimensional (2D) alternatives. Within the frame of this project, we plan to establish for which tasks 3D and realism are ill-suited and for which tasks they may be ideal.

A second larger goal is to improve the usability of complex visualizations by applying the knowledge from vision science. Therefore, we will draw upon concepts and metaphors from vision science and mathematically model the relevant and useful features of the human visual system (HVS). Specifically we intend to tackle the three problems: complexity, ambiguity, performance (where possibly, algorithmically). The goal is to obtain HVS-optimized visualization designs; and to achieve this, we will utilize experimental methods (i.e. user studies with eye tracking) to validate the proposed visualization designs.
Publications / Publikationen Lokka, I.-E., & Çöltekin, A. (2016). Simulating navigation with virtual 3D geovisualizations – A focus on memory related factors. In ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Prague.

Çöltekin, A., Lokka, I.-E., & Zahner, M. (2016). On the usability and usefulness of 3D (geo)visualizations -- A focus on virtual reality environments. In International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Prague.

Biland, J., & Çöltekin, A. (corresponding author) (2016). An empirical assessment of the impact of the light direction on the relief inversion effect in shaded relief maps: NNW is better than NW. Cartography and Geographic Information Science. DOI: 10.1080/15230406.2016.1185647

Çöltekin, A., Hempel, J., Brychtova, A., Giannapoulus, I., Stellmach, S., & Dachstelt, R. (2016). Gaze and feet as additional input modalities for interaction with geospatial interfaces . ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences. DOI:10.5194/isprs-annals-III-2-113-2016

Biljecki, F., Stoter, J., Ledoux, H., Zlatanova, S., & Çöltekin, A. (2015). Applications of 3D city models: State of the art review. ISPRS International Journal of Geo-Information, 4(4), 2842–2889. doi:10.3390/ijgi4042842

Çöltekin, A., Lokka, I.-E., & Boer, A. (2015). The utilization of publicly available map types by non-experts -- A choice experiment. In Proceedings of the 27th International Cartographic Conference (ICC2015).

Weitere Informationen

Keywords / Suchbegriffe 3D visualization, realism, user experience, eye tracking
Project leadership and contacts /
Projektleitung und Kontakte
Dr. Arzu Coltekin (Project Leader)
Prof. Dr. Sara Fabrikant  
Dr. Kai-Florian Richter  
Funding source(s) /
Unterstützt durch
SNF (Personen- und Projektförderung)
In collaboration with /
In Zusammenarbeit mit
Prof. Andrew Duchowski, Department of Computer Science, Clemson University United States
Prof. Alyssa Goodman, Harvard-Smithsonian Center for Astrophysics, Harvard University United States
Dr Jan Wiener, Wayfinding Research Centre
Bornemouth University
United Kingdom
Duration of Project / Projektdauer Sep 2014 to Sep 2018