3D Tomography parallelization on FPGAs via HLS tools

Abstract : This paper deals with the evaluation of FPGAs resurgence for hardware acceleration applied to computed to-mography on the back-projection operator used in iterative reconstruction algorithms. We focus our attention on the tools developed by FPGAs manufacturers, in particular the Intel FPGA SDK for OpenCL, that promises a new level of hardware abstraction from the developer's perspective, allowing a software-like programming of FPGAs. For this purpose, we start with evaluating different custom OpenCL implementations of the back-projection algorithm. With some clues on memory fetching and coalescing, we then further tune designs to improve performance. Finally, a comparison is made with GPU implementations, and a preliminary conclusion is drawn on FPGAs future in computed tomography.
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Submitted on : Sunday, February 18, 2018 - 10:47:30 AM
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Maxime Martelli, Nicolas Gac, Alain Mérigot, Cyrille Enderli. 3D Tomography parallelization on FPGAs via HLS tools. DASIP, Sep 2017, dresden, Germany. pp.1-6, ⟨10.1109/DASIP.2017.8122119⟩. ⟨hal-01569320⟩



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