Open AccessReal-Time Computation of 3D Wireframes in Computer-Generated Holography
Author(s) -
David Blinder,
Takashi Nishitsuji,
Peter Schelkens
Publication year - 2021
Publication title -
ieee transactions on image processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.778
H-Index - 288
eISSN - 1941-0042
pISSN - 1057-7149
DOI - 10.1109/tip.2021.3125495
Subject(s) - signal processing and analysis , communication, networking and broadcast technologies , computing and processing
Computer-Generated Holography (CGH) algorithms simulate numerical diffraction, being applied in particular for holographic display technology. Due to the wave-based nature of diffraction, CGH is highly computationally intensive, making it especially challenging for driving high-resolution displays in real-time. To this end, we propose a technique for efficiently calculating holograms of 3D line segments. We express the solutions analytically and devise an efficiently computable approximation suitable for massively parallel computing architectures. The algorithms are implemented on a GPU (with CUDA), and we obtain a 70-fold speedup over the reference point-wise algorithm with almost imperceptible quality loss. We report real-time frame rates for CGH of complex 3D line-drawn objects, and validate the algorithm in both a simulation environment as well as on a holographic display setup.