Real-time adjustment of transfer function for Fourier volume rendering

Chang-Chieh Cheng; Yu-Tai Ching

doi:10.1117/1.3653264

1 October 2011 Real-time adjustment of transfer function for Fourier volume rendering

Chang-Chieh Cheng, Yu-Tai Ching

Author Affiliations +

Journal of Electronic Imaging, Vol. 20, Issue 4, 043004 (October 2011). https://doi.org/10.1117/1.3653264

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.

©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Chang-Chieh Cheng and Yu-Tai Ching "Real-time adjustment of transfer function for Fourier volume rendering," Journal of Electronic Imaging 20(4), 043004 (1 October 2011). https://doi.org/10.1117/1.3653264

Published: 1 October 2011

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