Titlebook: Visualization in Scientific Computing ’98; Proceedings of the E Dirk Bartz Conference proceedings 1998 Springer-Verlag/Wien 1998 Dynamics.S

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Mirror, Mirror on the Wall, Who Has the Best Visualization of All? - A Reference Model for Visualizabquality. The .. graph is introduced as a compact, easy to perceive representation of the so-defined- visualization quality. An example illustrates all concepts. The reference model and the graph can help to evaluate visualizations and thus to further improve the quality of scientific visualizations.

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Fast Generation of Multiresolution Surfaces from Contourss. In this paper we describe a new robust and fast reconstruction algorithm from contours that delivers a multiresolution surface with controlled distance from the original contours. Supporting selective refinement in areas of interest, this multiresolution model can be handled interactively without giving up accuracy.

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Enhancing the Visualization of Characteristic Structures in Dynamical Systemsn over-population of phase space with occlusion problems as a consequence is omitted. On the other hand, information loss is minimized since characteristic structures of the flow are still illustrated in the visualization.

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Stereoscopic Volume Renderingse demonstrate that stereoscopic viewing is beneficial for perceiving depth in transparent DVR images. We illustrate the application of the system to the visualisation of prostate cancer treatment plans. Finally, we describe the use of head-tracking to implement 3D stereo look-around.

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Conference proceedings 1998on in dynamics systems and on the accuracy of algorithmic extracted features. Three papers focus on stereoscopic volume rendering, on the visualization of atomic collision cascades and of quality of visualization systems in general.

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Data Compression of Multiresolution Surfacesme linear in the output size. It applies to MRMs generated by different simplification algorithms like local vertex deletion or edge and triangle collapse. The time required to transmit models over communication lines and the space needed to store the MRMs is significantly reduced.

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Particle Tracing in σ-Transformed Grids using Tetrahedral 6-Decompositionion method into 6 tetrahedra. It is shown that this method is robust in σ-transformed grids, however large the shearing. Results are presented of applying the technique to a real world simulation. Comparisons are made between the accuracy and speed of the 6-decomposition and the 6-decomposition methods.

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Data—Dependent Surface Simplification surfaces is presented using besides geometric criteria a gradient approximation of the data to define the order of geometric elements to be removed. Examples show that the algorithm works sufficiently fast to be used interactively in a VR environment and allows relatively high reduction rates keeping a good quality representation of the surfaces.