Computer-generated holography (CGH) is a notoriously difficult computation problem, simulating numerical diffraction, where every scene point can affect every hologram pixel. To tackle this challenge, specialized software instructions and hardware solutions are developed to significantly reduce calculation time and power consumption. In this work, we propose a novel algorithm for high-performance point-based CGH, leveraging fixed-point integer representations, the separability of the Fresnel transform and using new look-up table free cosine representation. We report up to a 3-fold speed up over an optimized floating-point GPU implementation, as well as a 15 dB increase in quality over a state-of-the-art FPGA-based fixed-point integer solution.
Blinder, D & Schelkens, P 2021, 'Fast Low-Precision Computer-Generated Holography on GPU', Applied Sciences, vol. 11, no. 13, 6235. https://doi.org/10.3390/app11136235
Blinder, D., & Schelkens, P. (2021). Fast Low-Precision Computer-Generated Holography on GPU. Applied Sciences, 11(13), Article 6235. https://doi.org/10.3390/app11136235
@article{289ff19c3a864204886480cb4cd04e39,
title = "Fast Low-Precision Computer-Generated Holography on GPU",
abstract = "Computer-generated holography (CGH) is a notoriously difficult computation problem, simulating numerical diffraction, where every scene point can affect every hologram pixel. To tackle this challenge, specialized software instructions and hardware solutions are developed to significantly reduce calculation time and power consumption. In this work, we propose a novel algorithm for high-performance point-based CGH, leveraging fixed-point integer representations, the separability of the Fresnel transform and using new look-up table free cosine representation. We report up to a 3-fold speed up over an optimized floating-point GPU implementation, as well as a 15 dB increase in quality over a state-of-the-art FPGA-based fixed-point integer solution.",
keywords = "digital holography, computer-generated holography, massively parallel computing, 3D displays, computer graphics",
author = "David Blinder and Peter Schelkens",
year = "2021",
month = jul,
day = "5",
doi = "10.3390/app11136235",
language = "English",
volume = "11",
journal = "Applied Sciences",
issn = "2076-3417",
publisher = "MDPI",
number = "13",
}