Real-time adjustment of transfer function for Fourier volume rendering

Chang-Chieh Cheng*, Yu-Tai Ching

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

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.

Original languageEnglish
Article number043004
JournalJournal of Electronic Imaging
Volume20
Issue number4
DOIs
StatePublished - 1 Oct 2011

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