Smoothing of inter-layer edge artifacts in depth-map computer-generated holograms

Article Computer Science, Software Engineering

Neural 3D Holography: Learning Accurate Wave Propagation Models for 3D Holographic Virtual and Augmented Reality Displays

Suyeon Choi et al.

Summary: The article introduces a method to improve holographic display image quality using a neural network parameterized wave propagation model, trained through camera feedback, and demonstrates its effectiveness through experiments.

ACM TRANSACTIONS ON GRAPHICS (2021)

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Article Optics

Optimizing image quality for holographic near-eye displays with Michelson Holography

Suyeon Choi et al.

Summary: Michelson holography (MH) is a holographic display technology that optimizes image quality for emerging holographic near-eye displays by using two SLMs to cancel out undiffracted light. The system is calibrated using camera-in-the-loop holography techniques and demonstrates state-of-the-art 2D and multi-plane holographic image quality.

OPTICA (2021)

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Article Multidisciplinary Sciences

Towards real-time photorealistic 3D holography with deep neural networks

Liang Shi et al.

Summary: The ability to present three-dimensional scenes with continuous depth sensation has a profound impact on various fields. Computer-generated holography enables high-resolution 3D projection, but existing methods have limitations. We demonstrate a deep-learning-based pipeline for real-time 3D hologram synthesis from a single RGB-depth image. Our memory-efficient CNN runs on consumer-grade GPUs and mobile devices, promising real-time performance in future AR/VR headsets.

NATURE (2021)

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Article Optics

Multi-depth hologram generation using stochastic gradient descent algorithm with complex loss function

Chun Chen et al.

Summary: The proposed method in this paper utilizes a complex loss function instead of an amplitude-only loss function in the stochastic gradient descent (SGD) optimization process, resulting in improved efficiency and accuracy in hologram generation.

OPTICS EXPRESS (2021)

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Article Optics

Wide-viewing full-color depthmap computer-generated holograms

Sungjae Park et al.

Summary: An efficient synthesis algorithm for wide-viewing full-color depthmap computer-generated holograms is proposed, integrating wave-optic geometry-mapping, color-matching, and noise-filtering. Computational parallelism and off-axis R.G.B simultaneous illumination method are utilized to achieve significant computational efficiency improvement and verify the feasibility of full-color sub-wavelength binary spatial light modulator technology.

OPTICS EXPRESS (2021)

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Article Optics