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Title: Fast rendering of foveated volumes in wavelet-based representation
Authors: Yu, H. 
Chang, E.-C. 
Zheng, Z.
Keywords: Focus plus context visualization
Volume rendering
Wavelet foveation
Issue Date: 2005
Citation: Yu, H., Chang, E.-C., HUANG ZHIYONG, Zheng, Z. (2005). Fast rendering of foveated volumes in wavelet-based representation. Visual Computer 21 (8-10) : 735-744. ScholarBank@NUS Repository.
Abstract: A foveated volume can be viewed as a blending of multiple regions, each with a different level of resolution. It can be efficiently represented in the wavelet domain by retaining a small number of wavelet coefficients. We exploit the arrangement of those wavelet coefficients to achieve fast volume rendering. The running time is O(n 2+m), where n is the width of the rendered image, and m is the number of wavelet coefficients retained for the foveated volume. Our algorithm consists of two phases. The first phase is a fast reconstruction of the super-voxels from the wavelet coefficients, and the second phase renders the super-voxels by carefully tracking rays with different thickness in the super-voxels. No expensive preprocessing on the wavelet coefficients is required. Hence, it is possible to interactively modify different viewing parameters like the transfer functions. A potential application of our algorithm is in remote visualization of large volume data-sets. © Springer-Verlag 2005.
Source Title: Visual Computer
ISSN: 01782789
DOI: 10.1007/s00371-005-0331-1
Appears in Collections:Staff Publications

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