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Journal of Electronic Imaging

Real-time adjustment of transfer function for Fourier volume rendering
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Paper Abstract

Fourier volume rendering (FVR) is a volume rendering method based on the Fourier slice theorem. With an n × n × n volume data, the FVR algorithm requires O(n2 log n) time to generate a result. Because it requires time less than O(n3) does, FVR is preferred for designing a real-time rendering algorithm with a preprocessing step. We improve upon our previous work. We demonstrate that a B-spline is significantly more useful when designing a transfer function. To design an appropriate transfer function with a spline function, additional control points are required. However, the memory space required for the proposed method increases in linear proportion to the number of control points. We show that the set of control points can be clustered into groups, ensuring the memory required is linearly proportional to the number of groups. The proposed technique supports real-time rendering after adjusting the transfer function for FVR.

Paper Details

Date Published: 1 October 2011
PDF: 12 pages
J. Electron. Imaging. 20(4) 043004 doi: 10.1117/1.3653264
Published in: Journal of Electronic Imaging Volume 20, Issue 4
Show Author Affiliations
Chang-Chieh Cheng, National Chiao Tung Univ. (Taiwan)
Yu-Tai Ching, National Chiao Tung Univ. (Taiwan)

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