International Journal of Reconfigurable Computing / 2018 / Article / Fig 11

Research Article

Algorithm and Architecture Optimization for 2D Discrete Fourier Transforms with Simultaneous Edge Artifact Removal

Figure 11

Figure showing a thin slice of filtered back-projection results by reconstructing a Shepp-Logan phantom. The 3D density was reconstructed from 180 equally spaced simulated projections using standard linearly interpolated FBP and using a Ram-Lak filter. It can be seen that the results from the FPGA + CPU solution have some errors; this is due to the fact that the 2D FFT of each projection is less accurate. The results are good enough to be used as a basis for further optimization based refinement methods.

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