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Volume rendering of DCT-based compressed 3D scalar data

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2 Author(s)
Boon-Lock Yeo ; Dept. of Electr. Eng., Princeton Univ., NJ, USA ; Liu, B.

The paper proposes a scheme to perform volume rendering from compressed scalar data. Instead of decompressing the entire data set before rendering, blocks of data are decompressed as needed. Discrete cosine transform based compression technique is used to illustrate the method. The data is partitioned into overlapping blocks to permit local rendering and allow easy parallelization. Compression by factor of 20 to 30 produces rendering virtually indistinguishable from rendering using the original uncompressed data. Speedup is obtained by making use of spatial homogeneity detected in the transform domain. Rendering time using the proposed approach is less than that of direct rendering from the entire uncompressed data. The proposed method thus offers an attractive option to reduce storage, computation, and transmission overhead of otherwise huge data sets

Published in:

Visualization and Computer Graphics, IEEE Transactions on  (Volume:1 ,  Issue: 1 )

Date of Publication:

Mar 1995

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