Description

Usually the viewpoint for volume rendering is located on a viewing sphere and can be moved by rotation operations. During the examination process of the volume data the system keeps track of the user interactions to build up an geometric viewing object (template). In a first step the viewing sphere is visualized with a histogram plotted onto it which indicates the preferred views. Further the user should be provided with a set of the n best views for his examination purpose. Incrementally the viewing sphere is deformed and lets the user examine the data set more intuitively (viewing ellipsoid or viewing cylinder).

Task

Your tasks will be the implementation of a new model for (interaction-)history-based viewpoint estimation. The framework for your implementations will be a highly innovative real-world medical workstation of our collaborative company partner which is under development. You have the chance to work in a creative environment and we are looking forward to the contribution of your ideas.

Requirements

Good knowledge in computer graphics and visualization, good programming skills (Java)

Additional Information

Contact: Peter Kohlmann

Some literature:

• I. Viola, M. Feixas, M. Sbert, and M. E. Gröller: Importance-Driven Focus of Attention. IEEE Transactions on Visualization and Computer Graphics, 12(5):933-940, October 2006.
• U. Bordoloi and H.-W. Shen. View selection for volume rendering. In Proceedings of IEEE Visualization’05, pp. 487–494, 2005.
• S. Takahashi, I. Fujishiro, Y. Takeshima, and T. Nishita. A feature-driven approach to locating optimal viewpoints for volume visualization. In Proceedings of IEEE Visualization’05, pages 495–502, 2005.
• P.-P. Vázquez, M. Feixas, M. Sbert, and W. Heidrich: Automatic View Selection Using Viewpoint Entropy and its Applications to Image-based Modelling. Comput. Graph. Forum 22(4): 689-700, 2003.

• Computer Graphics Group
• Courses
• Projekte
• Viewing Sphere Deformation