3 May 2013 GPU-based calculations in digital holography
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In this work we are going to apply GPU (Graphical Processing Units) with CUDA environment for scientific calculations, concretely high cost computations on the field of digital holography. For this, we have studied three typical problems in digital holography such as Fourier transforms, Fresnel reconstruction of the hologram and the calculation of vectorial diffraction integral. In all cases the runtime at different image size and the corresponding accuracy were compared to the obtained by traditional calculation systems. The programs have been carried out on a computer with a graphic card of last generation, Nvidia GTX 680, which is optimized for integer calculations. As a result a large reduction of runtime has been obtained which allows a significant improvement. Concretely, 15 fold shorter times for Fresnel approximation calculations and 600 times for the vectorial diffraction integral. These initial results, open the possibility for applying such kind of calculations in real time digital holography.
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R. Madrigal, R. Madrigal, P. Acebal, P. Acebal, S. Blaya, S. Blaya, L. Carretero, L. Carretero, A. Fimia, A. Fimia, F. Serrano, F. Serrano, "GPU-based calculations in digital holography", Proc. SPIE 8776, Holography: Advances and Modern Trends III, 87760K (3 May 2013); doi: 10.1117/12.2017262; https://doi.org/10.1117/12.2017262

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