The Volume Graphics Research Group

Asish Law

Research Activities:

My main interest lies in designing parallel algorithms, with particular emphasis on graphics. For the last couple of years, I have been implementing and testing efficient ray tracing algorithms on the Cray T3D. We (me and my advisor, Dr. Roni Yagel) have managed to device methods with excellent speedups for these algorithms. Currently, I am working on porting the T3D programs to other MPPs like the Convex Exemplar and the IBM SP-2. The intention is to study the portability of these machines, and to determine their efficiencies for such algorithms. I would like to compare the results achieved from implementations on the MPPs with those of NOWs.

Apart from parallel algorithms, I have worked to some extent on voxel-based morphing also. With increasing interest in parallel computing and with the humble intention of finishing my Ph. D. ASAP, my research in morphing has been dormant for some time.

Publications:

• A. Law and R. Yagel, "Two Coherent Parallel Rendering Algorithms for COWs and NOWs", submitted to Journal of Parallel and Distributed Computing, special issue on Networks of Workstations, March 1996.

• R. Yagel, A. Law, D. Reed, P.W. Shih, and N. Shareef, "Hardware Assisted Volume Rendering of Unstructured Grids by Incremental Slicing", accepted at IEEE Syposium of Volume Visualization 96, San Francisco, October 1996.

• A. Law and R. Yagel, "An Optimal Ray Traversal Scheme for Visualizing Colossal Medical Volumes", accepted at Visualization in Biomedical Computing, VBC '96, September 1996.

• A. Law and R. Yagel, "An Active-Ray Approach to Parallel Rendering on Distributed Memory Multiprocessors", accepted at IEEE Symposium of Parallel and Distributed Processing, SPDP '96, New Orleans, October 1996. Available as (OSU-CISRC-2/96-TR10).

• A. Law, R. Yagel, and D.N. Jayasimha, "Parallel Volume Rendering for Scientific Visualization", ISCA Journal of Computers and Their Applications, accepted.

• A. Law and R. Yagel, "Exploiting Spatial, Ray, and Frame Coherency for Efficient Parallel Volume Rendering", Proceedings of GRAPHICON '96, Vol. 2, Saint-Petersburg, Russia, July 1996, pp. 93-101.

• A. Law and R. Yagel, "Multi-Frame Thrashless Ray Casting with Advancing Ray-Front", Proceedings of Graphics Interface '96, Toronto, Canada, May 1996, pp. 70-77. Available as (OSU-CISRC-11/95-TR50).

• R. Yagel, D. Stredney, G. Wiet, and A. Law, "PARAVOL: Parallel Volume Rendering for Virtual Medicine", The Cray User Group Meeting, Fairbanks, Alaska, September 1995, pp. 131-138.

• A. Law and R. Yagel, "CellFlow: A Parallel Rendering Scheme for Distributed Memory Architectures", International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA `95), November 1995, pp. 3-12.

• A. Law and R. Yagel, "A LA-COMA Implementation of Parallel Volume Rendering", 15 pp. (OSU-CISRC-4/95-TR18).

• A. Law, R. Yagel, and D.N. Jayasimha, "VoxelFlow: A Parallel Volume Rendering Method for Scientific Visualization", Proceedings of International Conference on Computer Applications in Engineering and Medicine, March 1995, pp. 260-264.

• A. Law and R. Yagel, "Voxel-Based Morphing", 12 pp. (OSU-CISRC-4/93-TR15).

Address

For more information, please see my personal homepage.

Last modified: October 6, 1996