System Architecture for Digital Hologram Video Service

Lee, Yoon-Hyuk; Seo, Young-Ho; Kim, Dong-Wook

doi:10.5909/jbe.2014.19.5.590

Journal of Broadcast Engineering

2014

DOI: 10.5909/jbe.2014.19.5.590

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System Architecture for Digital Hologram Video Service

Yoon-Hyuk Lee¹,

Young-Ho Seo²,

Dong-Wook Kim³

Abstract: The purpose of this paper is to propose a service system for a digital hologram video, which has not been published yet. This system assumes the existing service framework for 2-dimensional or 3-dimensional image/video, which includes data acquisition, processing, transmission, reception, and reconstruction. This system includes acquisition of color and depth image pairs from a image acquisition system with vertical rigs, rectification of acquired image pairs and generating digital hologram. Also it is designe… Show more

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Cited by 2 publications

References 8 publications

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Phase-only hologram video compression using a deep neural network for up-scaling and restoration

Kim¹,

Kim²,

Park³

et al. 2022

Appl. Opt.

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This paper proposes a coding method for compressing a phase-only hologram video (PoHV), which can be directly displayed in a commercial phase-only spatial light modulator. Recently, there has been active research to use a standard codec as an anchor to develop a new video coding for 3D data such as MPEG point cloud compression. The main merit of this approach is that if a new video codec is developed, the performance of relative coding methods can be increased simultaneously. Furthermore, compatibility is increased by the capability to use various anchor codecs, and the developing time is decreased. This paper uses a currently used video codec as an anchor codec and develops a coding method including progressive scaling and a deep neural network to overcome low temporal correlation between frames of a PoHV. Since it is difficult to temporally predict a correlation between frames of a PoHV, this paper adopts a scaling function and a neural network in the encoding and decoding process, not adding complexity to an anchor itself to predict temporal correlation. The proposed coding method shows an enhanced coding gain of an average of 22%, compared with an anchor in all coding conditions. When observing numerical and optical reconstructions, the result images by the proposed show clearer objects and less juddering than the result by the anchor.

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Phase-only hologram video compression using a deep neural network for up-scaling and restoration

Kim¹,

Kim²,

Park³

et al. 2022

Appl. Opt.

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A New ASIC Design of Digital Hologram Generation Circuit for 12×12 Block

Lee¹,

Kim²,

Seo³

2016

Journal of Broadcast Engineering

Self Cite

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In this paper, we propose a new hardware architecture to generate computer-generated holograms based on the block based calculation method and implement a VLSI (very large scaled integrated circuit) in ASIC (application specific integrated circuit) environment. The proposed hardware has a structure that can produce a part of a hologram in the unit of a block in parallel. After calculating a block of a hologram by using an object point, the calculation is repeated to all object points and intermediate results from them are accumulated to produce a final block of a hologram. Through this structure, we can make various size of holograms with the optimized memory access in real-time operation. The proposed hardware was implemented in the Hynix 0.18um CMOS technology of Magna chip Inc. and has 876,608 gate counts. It can generate complex holograms unlike the previous researches and stably operate in the clock frequency of 200MHz.

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System Architecture for Digital Hologram Video Service

Cited by 2 publications

References 8 publications

Phase-only hologram video compression using a deep neural network for up-scaling and restoration

Phase-only hologram video compression using a deep neural network for up-scaling and restoration

A New ASIC Design of Digital Hologram Generation Circuit for 12×12 Block

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