Publications
A Multi-Resolution Interactive Previewer for Volumetric Data on Aribitrary Meshes
Oliver Kreylos, Kwan-Liu Ma, and Bernd HamannIn Proceedings of 2000 International Symposium Workshop on Computer Graphics and Virtual Reality
December, 2000, pp. 74-81In this paper we describe a rendering method suitable for interactive previewing of large-scale arbitary-mesh volume data sets. A data set to be visualized is represented by a \point cloud," i. e., a set of points and associated data values without known connectivity between the points. The method uses a multi-resolution approach to achieve interactive rendering rates of several frames per second for arbitrarily large data sets ...
Compression and Accelerated Rendering of Time-Varying Volume Data
Kwan-Liu Ma and Han-Wei ShenIn Proceedings of 2000 International Symposium Workshop on Computer Graphics and Virtual Reality
December, 2000, pp. 82-89Visualization of time-varying volumetric data sets, which may be obtained from numerical simulations or sensing instruments, provides scientists insights into the detailed dynamics of the phenomenon under study. This paper describes our study of a coherent solution based on quantization coupled with octree and difference encoding, and adaptive rendering for efficient visualization of timevarying volumetric data. Quantization is used to attain voxel-level compression and may have a significant influence on the performance of the subsequent encoding and visualization steps ...
High Performance Visualization of Time-Varying Volume Data over a Wide-Area Network (CD Rom)
Kwan-Liu Ma and David M. CampIn Proceedings of Supercomputing 2000 Conference
November, 2000, pp. 29-29This paper presents an end-to-end, low-cost solution for visualizing time-varying volume data rendered on a parallel computer located at a remote site. Pipelining and careful grouping of processors are used to hide I/O time and to maximize processors utilization. Compression is used to significantly cut down the cost of transferring output images from the parallel computer to a display device through a wide-area network ...
Visualizing Visualizations: User Interfaces for Managing and Exploring Scientific Visualization Data,Visualization Viewpoints
Kwan-Liu MaIEEE Computer Graphics and Applications
Volume 20, Number 5, September/October, 2000, pp. 16-19New and better computing technologies continue to revolutionize our capability to solve larger and more complex problems in science and engineering. One roadblock to further advance comes from our inability to manage and analyze data of increasing size. Just as gigabytes of disk and memory become ...
The Life Cycle of a Visualization Case Study
David Kao and Kwan-Liu MaIEEE Computer Graphics and Applications
Volume 20, Number 5, September/October, 2000, pp. 29-31Can you think of a domain application where you haven’t seen a visualization technique used? You might think only a few such applications exist because scientific visualization has benefited applications from many disciplines. This is evident at the IEEE Visualization conferences, where each year we learn about many new visualization techniques and ...
A Spreadsheet Interface for Visualization Exploration
T.J. Jankun-Kelly and Kwan-Liu MaIn Proceedings of IEEE Visualization 2000 Conference
October, 2000, pp. 69-76As the size and complexity of data sets continues to increase, the development of user interfaces and interaction techniques that expedite the process of exploring that data must receive new attention. Regardless of the speed of rendering, it is important to coherently organize the visual process of exploration: this information both grants insights about the data to a user and can be used by collaborators to understand the results ...
Visualizing DIII-D Tokamak Magnetic Field Lines
Greg Schussman, Kwan-Liu Ma, David Schissel, and Todd EvansIn Proceedings of IEEE Visualization 2000 Conference
October, 2000, pp. 501-504We demonstrate the use of a combination of perceptually effective techniques for visualizing magnetic field data from the DIII-D Tokamak. These techniques can be implemented to run very efficiently on machines with hardware support for OpenGL. Interactive speeds facilitate clear communication of magnetic field structure, enhancing fusion scientists’ understand ...
Multi-threaded Rendering Unstructured-Grid Volume Data on the SGI Origin 2000
Christian Hofsetz and Kwan-Liu MaIn Proceedings of Eurographics Symposium on Parallel Graphics and Visualization
September, 2000, pp. 133-140This paper presents a work-in-progress. The objective of our study is to derive an optimal design for high-performance rendering of irregular-grid volume data on the increasingly popular, distributed shared-memory parallel supercomputers. We experiment with a multi-threaded volume rendering algorithm for three-dimensional ...
The Designer's Workbench: Towards Real-Time Immersive Modeling
Falko Kuester, Mark A. Duchaineau, Bernd Hamann, Kenneth I. Joy, and Kwan-Liu MaThe International Society for Optical Engineering
Volume 3957, January, 2000, pp. 464-472This paper introduces the DesignersWorkbench, a semi-immersive virtual environment for two-handed modeling, sculpting and analysis tasks. The paper outlines the fundamental tools, design metaphors and hardware components required for an intuitive real-time modeling system. As companies focus on streamlining productivity to cope with global competition, the migration to computer-aided design (CAD), computer-aided manufacturing (CAM), and computer-aided engineering (CAE)systems has established a new backbone of modern industrial product development ...