Feature based volumetric video compression for interactive playback
VVS '02 Proceedings of the 2002 IEEE symposium on Volume visualization and graphics
Volume warping for adaptive isosurface extraction
Proceedings of the conference on Visualization '02
Transfer Function Based Adaptive Decompression for Volume Rendering of Large Medical Data Sets
VV '04 Proceedings of the 2004 IEEE Symposium on Volume Visualization and Graphics
Volumetric video compression for interactive playback
Computer Vision and Image Understanding - Model-based and image-based 3D scene representation for interactive visalization
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When interactive real-time applications are developed with very large volume data, the use of lossy compression is often inevitable. Lossy compression schemes generally encode data without consideration of the purpose of visualization that is actually performed, which often results in inefficient compression. In this paper, we present a new method for classifying voxels according to their importance in visualization, and assigning appropriate weights to them. The associated weight information can be combined with lossy compression schemes to reduce the visual degradation of reconstructed images, resulting in higher compression rates and visual fidelity. Test results demonstrate that the proposed technique improves both the amount of compression and the quality of visualization significantly.