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Parallel volume rendering on a network of workstations

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2 Author(s)
C. Giersten ; Bergen Environ. Sci. & Solutions Center, IBM, Norway ; J. Petersen

An algorithm for parallel volume rendering on general-purpose workstations connected to a local area network (LAN) is presented. The algorithm is based on an efficient scan-line algorithm for volume rendering of irregular meshes. This algorithm computes images by intersecting the mesh with successive planes defined through each scan line and perpendicular to the screen. These planes are called scan planes. Image coherency from one scan plane to the next, and within each scan plane, speeds up image computation. The proposed algorithm is a modified version of the scan-line algorithm, suitable for parallelization and for handling large data sets efficiently. Based on an efficiency analysis of this version, it is concluded that minimal additional computing and communication are required if each processor is given the task of computing sequences of successive lines in the image. Ways of achieving good load balancing on a group of heterogeneous workstations that have arbitrary loads by other users are suggested.<>

Published in:

IEEE Computer Graphics and Applications  (Volume:13 ,  Issue: 6 )