Foveated computer-generated hologram and its progressive update using triangular mesh scene model for near-eye displays

Ju, Yeon-Gyeong; Park, Jae‐Hyeung

doi:10.1364/oe.27.023725

Cited by 21 publications

(6 citation statements)

References 15 publications

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“…The light coming from these two displays are then combined optically before reaching the eye. The concept of foveation is also increasingly used in holographic displays [Maimone et al 2017;Yaraş et al 2010], a highly promising direction to true 3D displays with powerful features such as variable focal control, optical aberration correction, and non-conflicting depth cues, to reduce the rendering cost of computer-generated holograms (CGH) Ju and Park 2019;Wei and Sakamoto 2019]. For example, use the concept of foveated rendering to speed-up the computational cost of CGH for 3D volumes based on a layered approach.…”

Section: Optics-based Methodsmentioning

confidence: 99%

Foveated Rendering: Motivation, Taxonomy, and Research Directions

Jabbireddy¹,

Sun²,

Meng³

et al. 2022

Preprint

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With the recent interest in virtual reality and augmented reality, there is a newfound demand for displays that can provide high resolution with a wide field of view (FOV). However, such displays incur significantly higher costs for rendering the larger number of pixels. This poses the challenge of rendering realistic real-time images that have a wide FOV and high resolution using limited computing resources. The human visual system does not need every pixel to be rendered at a uniformly high quality. Foveated rendering methods provide perceptually high-quality images while reducing computational workload and are becoming a crucial component for large-scale rendering. In this paper, we present key motivations, research directions, and challenges for leveraging the limitations of the human visual system as they relate to foveated rendering. We provide a taxonomy to compare and contrast various foveated techniques based on key factors. We also review aliasing artifacts arising due to foveation methods and discuss several approaches that attempt to mitigate such effects. Finally, we present several open problems and possible future research directions that can further reduce computational costs while generating perceptually high-quality renderings.

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Section: Optics-based Methodsmentioning

confidence: 99%

Foveated Rendering: Motivation, Taxonomy, and Research Directions

Jabbireddy¹,

Sun²,

Meng³

et al. 2022

Preprint

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“…Nevertheless, this solution is time consuming [26,28]. Efficient techniques based on propagation have been proposed for calculating O [21,25,36,38,39]. With the aim to give the viewer a complete 3-D experience with full-parallax, wide-angle CGHs are required.…”

Section: Synthetizing Cgh With the Pasmentioning

confidence: 99%

Occlusion Culling for Wide-Angle Computer-Generated Holograms Using Phase Added Stereogram Technique

et al. 2021

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A computer-generated hologram (CGH) allows synthetizing view of 3D scene of real or virtual objects. Additionally, CGH with wide-angle view offers the possibility of having a 3D experience for large objects. An important feature to consider in the calculation of CGHs is occlusion between surfaces because it provides correct perception of encoded 3D scenes. Although there is a vast family of occlusion culling algorithms, none of these, at the best of our knowledge, consider occlusion when calculating CGHs with wide-angle view. For that reason, in this work we propose an occlusion culling algorithm for wide-angle CGHs that uses the Fourier-type phase added stereogram (PAS). It is shown that segmentation properties of the PAS can be used for setting efficient conditions for occlusion culling of hidden areas. The method is efficient because it enables processing of dense cloud of points. The investigated case has 24 million of point sources. Moreover, quality of the occluded wide-angle CGHs is tested by two propagation methods. The first propagation technique quantifies quality of point reproduction of calculated CGH, while the second method enables the quality assessment of the occlusion culling operation over an object of complex shape. Finally, the applicability of proposed occlusion PAS algorithm is tested by synthetizing wide-angle CGHs that are numerically and optically reconstructed.

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“…Since recently, however, industry has also been making considerable efforts to develop practical solutions for VAC [13,27]. Various techniques, including the multiplane display [28,29], varifocal display [13,30], extendeddepth-of-focus display [27], light field display [31], and holographic displays [32][33][34][35][36], have been reported in 2019, and their features are summarized in Table 3.…”

Section: Focal Cuementioning

confidence: 99%

“…Along with the research on the fundamental performance factors, including the FOV, angular resolution, and VAC mitigation, various techniques enabling more realistic and comfortable viewing have also been reported in 2019. One example is the hard-edge occlusion of real objects by Hybrid presentation of 2D and 3D images using an LC lens array to enhance the perceived resolution [31] Holographic Full color using a single SLM and grating [32] Holographic Foveated hologram synthesis for NEDs [33,34]…”

Section: Various Functionalitiesmentioning

confidence: 99%

Progress of display performances: AR, VR, QLED, and OLED

Jang

Lee

Kim

et al. 2020

Journal of Information Display

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In 2019, the device performances of the display technologies were largely advanced by the development of new materials and of the device architecture and driving scheme. The recent progress in the areas of virtual reality (VR), augmented reality (AR), quantum dot light-emitting diode (QLED), and organic light-emitting diode (OLED) is comprehensively summarized and discussed in this paper. ARTICLE HISTORY

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Foveated computer-generated hologram and its progressive update using triangular mesh scene model for near-eye displays

Cited by 21 publications

References 15 publications

Foveated Rendering: Motivation, Taxonomy, and Research Directions

Foveated Rendering: Motivation, Taxonomy, and Research Directions

Occlusion Culling for Wide-Angle Computer-Generated Holograms Using Phase Added Stereogram Technique

Progress of display performances: AR, VR, QLED, and OLED

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