Thesis defence T.R. Kol: virtual worlds

04 May 2018 12:30 - Location: Aula, TU Delft - By: webredactie

Representing Large Virtual Worlds. Promotor: Prof.dr. E. Eisemann (EWI).

The ubiquity of large virtual worlds and their growing complexity in computer graphics require efficient representations. This means that we need smart solutions for the underlying storage of these complex environments, but also for their visualization. How the virtual world is best stored and how it is subsequently shown to the user in an optimal way, depends on the goal of the application. In this respect, we identify the following three visual representations, which form orthogonal directions, but are not mutually exclusive. Realistic representations aim for physical correctness, while illustrative display techniques, on the other hand, facilitate user tasks, often relating to improved understanding. Finally, artistic approaches enable a high level of expressiveness for aesthetic applications. Each of these directions offers a wide array of possibilities. In this dissertation, our goal is to provide solutions for strategically selected challenges for all three visual directions, as well as for the underlying representation of the virtual world. Specifically, using a voxel-based compression method, we enable the in-core storage of scenes at a level of detail previously unattainable. Furthermore, we are able to efficiently simulate realistic lighting by rendering a scene from a high number of virtual light sources. Additionally, we present a method for improving user understanding in visualizations of large-scale city models, that aids in navigation tasks. Finally, we facilitate efficient artistic control of light shafts, a common atmospheric effect employed by artists that was previously hard to control. With our solutions for storing and displaying environments, we make a step towards better representing large virtual worlds, enabling the generation of beautiful, realistic and informative images.

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For access to theses by the PhD students you can have a look in TU Delft Repository, the digital storage of publications of TU Delft. Theses will be available within a few weeks after the actual thesis defence.