High Performance GPU-Based Fourier Volume Rendering

Table 1

Performance benchmarks comparison between the different stages of the computational context on the CPU versus GPU for processing a volume of . All the results are in milli-seconds.

Operation	CPU	GPU 1	GPU 2
Volume uploading to GPU	—	100	40
3D real FFT shift	2014.778	55.01	14.2
3D FFT	15297.28	442.004	90.53
3D complex FFT shift	1969.79	93.86	19.03
Resampling	11.3	1.290	0.458
2D FFT	5.736	0.771	0.1414
2D real FFT shift	1.565	0.4175	0.04623
Preprocessing stage	19281.847	690.886	163.78
Rendering loop	18.672	2.4796	0.6462
Entire pipeline	19300.5194	693.365	164.4