GPU-based frequency domain volume rendering

Ivan Viola, Armin Kanitsar, Meister Eduard Groller
Institute of Computer Graphics and Algorithms, Vienna University of Technology, Austria
Proceedings of the 20th spring conference on Computer graphics SCCG 04 (2004) Issue: 2, Publisher: ACM Press, Pages: 55


   title={GPU-based frequency domain volume rendering},

   author={Viola, I. and Kanitsar, A. and Gr{\”o}ller, M.E.},

   booktitle={Proceedings of the 20th spring conference on Computer graphics},






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Frequency domain volume rendering (FVR) is a volume rendering technique with lower computational complexity as compared to other techniques. In this paper the FVR algorithm is accelerated by factor of 17 by mapping the rendering stage to the GPU. The overall hardware-accelerated pipeline is discussed and the changes according to previous work are pointed out. The three-dimensional transformation into frequency domain is done in a pre-processing step. The rendering step is computed completely on the GPU. First the projection slice is extracted. Four different interpolation schemes are used for resampling the slice from the data represented by a 3D texture. The extracted slice is transformed back into the spatial domain using the inverse Fast Fourier or Fast Hartley Transform. The rendering stage is implemented through shader programs running on programmable graphics hardware achieving highly interactive framerates.
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