Fast hologram generation of long-depth object using multiple wavefront recording planes

Phan, Anh-Hoang; Alam, Md. Ashraful; Jeon, Seokhee; Lee, Jeong-Hyeon; Kim, Nam

doi:10.1117/12.2039018

Cited by 11 publications

(9 citation statements)

References 10 publications

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“…In other words, in order to maintain the computation efficiency of the WRP method, the thickness (depth range) of the object must be small. This problem has been addressed with the double WRP [39] and multiple WRP methods [40][41][42]. In these approaches, the object space is partitioned into two or more narrow zones along the axial direction.…”

Section: Wavefront Recording Plane Methodsmentioning

confidence: 99%

Review of fast methods for point-based computer-generated holography [Invited]

Tsang

Poon

2018

Photon. Res.

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Computer-generated holography (CGH) is a technique for converting a three-dimensional (3D) object scene into a two-dimensional (2D), complex-valued hologram. One of the major bottlenecks of CGH is the intensive computation that is involved in the hologram generation process. To overcome this problem, numerous research works have been conducted with the aim of reducing arithmetic operations involved in CGH. In this paper, we shall review a number of fast CGH methods that have been developed in the past decade. These methods, which are commonly referred to as point-based CGH, are applied to compute digital Fresnel holograms for an object space that is represented in a point cloud model. While each method has its own strength and weakness, trading off conflicting issues, such as computation efficiency and memory requirement, they also exhibit potential grounds of synergy. We hope that this paper will bring out the essence of each method and provide some insight on how different methods may crossover into better ones.

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Section: Wavefront Recording Plane Methodsmentioning

confidence: 99%

Review of fast methods for point-based computer-generated holography [Invited]

Tsang

Poon

2018

Photon. Res.

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“…With the IWRP approach, the generation of a 2048 × 2048 hologram, comprising of 4 million object points, has been demonstrated in [46]. The second problem has been addressed in [47] and [48] based on a multiple WRP configuration as shown in Fig. 16.…”

Section: B Wrp Frameworkmentioning

confidence: 98%

Review on the State-of-the-Art Technologies for Acquisition and Display of Digital Holograms

Tsang

Poon

2016

IEEE Trans. Ind. Inf.

106

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Optical holography for recording threedimensional (3-D) scenes can be traced back to the early sixties. Since then, the art of holography has been applied in many areas, primarily as a tool for 3-D imaging, processing, and display. Extension of optical holography to other disciplines, such as optical computing and encryption, has been explored, but the scope of development is relatively limited. However, with the rapid advancements in electronics, computing, and material science technologies, most of the optical processes can be substituted with numerical or digital hardware means, thus leading to the emergence of digital holography. A typical digital holography framework can be encapsulated into three major stages, namely the input, processing, and output stages. The input and output stages are gatekeepers connecting the optical and digital worlds, without which the study on digital holography could only be restricted to theoretical and numerical analysis. In the past few decades, numerous research works have been conducted on these two important areas. In this paper, we shall provide a review on the recent development in these two important areas of digital holography. Selected pieces of important and popular works on the acquisition and display of digital holograms will be reported.Index Terms-Computer-generated holography (CGH), digital holography (DH), hologram acquisition, hologram display.

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“…The contributions of the points are first evaluated in the WRP, and then the content of the WRP is propagated through the hologram plane. The original WRP method has also been extended using multiple WRPs [34]. Other recent speed-up proposals rely on wavelet transforms [35] that allow representation of the emitted light with a reduced number of coefficients.…”

Section: Point-cloud Approachmentioning

confidence: 99%

Recent Advances in the Processing and Rendering Algorithms for Computer-Generated Holography

et al. 2019

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Digital holography represents a novel media which promises to revolutionize the way the users interacts with content. This paper presents an in-depth review of the state-of-the-art algorithms for advanced processing and rendering of computer-generated holography. Open-access holographic data are selected and characterized as references for the experimental analysis. The design of a tool for digital hologram rendering and quality evaluation is presented and implemented as an open-source reference software, with the aim to encourage the approach to the holography research area, and simplify the rendering and quality evaluation tasks. Exploration studies focused on the reproducibility of the results are reported, showing a practical application of the proposed architecture for standardization activities. A final discussion on the results obtained is reported, also highlighting the future developments of the reconstruction software that is made publicly available with this work.

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Fast hologram generation of long-depth object using multiple wavefront recording planes

Cited by 11 publications

References 10 publications

Review of fast methods for point-based computer-generated holography [Invited]

Review of fast methods for point-based computer-generated holography [Invited]

Review on the State-of-the-Art Technologies for Acquisition and Display of Digital Holograms

Recent Advances in the Processing and Rendering Algorithms for Computer-Generated Holography

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