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https://doi.org/10.1007/s00371-005-0331-1
Title: | Fast rendering of foveated volumes in wavelet-based representation | Authors: | Yu, H. Chang, E.-C. HUANG ZHIYONG 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. https://doi.org/10.1007/s00371-005-0331-1 | 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 | URI: | http://scholarbank.nus.edu.sg/handle/10635/40815 | ISSN: | 01782789 | DOI: | 10.1007/s00371-005-0331-1 |
Appears in Collections: | Staff Publications |
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