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Article

Deep Learning-Based Optimization of Central Angle and Viewpoint Configuration for 360-Degree Holographic Content

1
Department of Digital Contents, Sejong University, Seoul 05006, Republic of Korea
2
Department of Software, Sejong University, Seoul 05006, Republic of Korea
3
Hyper-Reality Metaverse Research Laboratory, Electronics and Telecommunications Research Institute, Daejeon 34129, Republic of Korea
4
R&D Center, Heerae Corporation, Seoul 04790, Republic of Korea
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2025, 15(17), 9465; https://doi.org/10.3390/app15179465
Submission received: 16 July 2025 / Revised: 19 August 2025 / Accepted: 28 August 2025 / Published: 28 August 2025
(This article belongs to the Special Issue Emerging Technologies of 3D Imaging and 3D Display)

Abstract

We present a deep learning-based approach to optimize the central angle between adjacent camera viewpoints for the efficient generation of natural 360-degree holographic 3D content. High-quality 360-degree digital holograms require the acquisition of densely sampled RGB–depth map pairs, a process that traditionally requires significant computational costs. Our method introduces a novel pipeline that systematically evaluates the impact of varying central angles—defined as the angular separation between equidistant viewpoints in an object-centered coordinate system—on both depth map estimation and holographic 3D image reconstruction. By systematically applying this pipeline, we determine the optimal central angle that achieves an effective balance between image quality and computational efficiency. Experimental investigations demonstrate that our approach significantly reduces computational demands while maintaining superior fidelity of the reconstructed 3D holographic images. The relationship between central angle selection and the resulting quality of 360-degree digital holographic 3D content is thoroughly analyzed, providing practical guidelines for the creation of immersive holographic video experiences. This work establishes a quantitative standard for the geometric configuration of viewpoint sampling in object-centered environments and advances the practical realization of real-time, high-quality holographic 3D content.
Keywords: 360-degree holographic 3D content; RGB-depth map; object-centered environment; near-eye holographic display; depth map estimation; computer-generated hologram (CGH); deep learning; central angle optimization; amplitude-modulating encoding; real-time reconstruction 360-degree holographic 3D content; RGB-depth map; object-centered environment; near-eye holographic display; depth map estimation; computer-generated hologram (CGH); deep learning; central angle optimization; amplitude-modulating encoding; real-time reconstruction

Share and Cite

MDPI and ACS Style

Kim, H.; Lee, Y.; Yoon, M.; Kim, C. Deep Learning-Based Optimization of Central Angle and Viewpoint Configuration for 360-Degree Holographic Content. Appl. Sci. 2025, 15, 9465. https://doi.org/10.3390/app15179465

AMA Style

Kim H, Lee Y, Yoon M, Kim C. Deep Learning-Based Optimization of Central Angle and Viewpoint Configuration for 360-Degree Holographic Content. Applied Sciences. 2025; 15(17):9465. https://doi.org/10.3390/app15179465

Chicago/Turabian Style

Kim, Hakdong, Yurim Lee, MinSung Yoon, and Cheongwon Kim. 2025. "Deep Learning-Based Optimization of Central Angle and Viewpoint Configuration for 360-Degree Holographic Content" Applied Sciences 15, no. 17: 9465. https://doi.org/10.3390/app15179465

APA Style

Kim, H., Lee, Y., Yoon, M., & Kim, C. (2025). Deep Learning-Based Optimization of Central Angle and Viewpoint Configuration for 360-Degree Holographic Content. Applied Sciences, 15(17), 9465. https://doi.org/10.3390/app15179465

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