Computer generated full-parallax synthetic hologram based on frequency mosaic

Yang, Xin; Wang, Hui; Li, Yong; Xu, Fuyang; Zhang, Hongbo; Zhang, JiaHeng; Yan, Qian-hong

doi:10.1016/j.optcom.2018.08.002

Cited by 9 publications

(13 citation statements)

References 16 publications

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“…The pixel pitch h d of the hologram is 0.318 μm, which is determined by our holographic printer [9][10][11]. This principle of the home-made holographic printer is similar with the holographic printer introduced in reference [12], but the light source in our holographic printer is a blue LED with center wavelength of 365 nm rather than a laser.…”

Section: Experiments and Resultsmentioning

confidence: 99%

“…High-resolution holograms such as rainbow holograms and Fresnel holograms are applicable for 3D advertising and packaging because of the emerging of holographic printing technology [9][10][11][12][13][14]. The biggest challenge for high-resolution holography is the huge amount of computation.…”

Section: Introductionmentioning

confidence: 99%

“…However, those methods are not effective for reducing the calculation burden for high-resolution hologram. We have proposed frequency fusing methods similar to holographic stereogram for full-parallax image hologram [11] and color rainbow hologram [10] calculation with high efficiency but the sizes of calculated hologram are limited by the RAM (Random Access Memory) of computer. Rectangular tiling algorithms have been proposed for high-resolution hologram calculation free of limitation from computer RAM [19,20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

High-Resolution Hologram Calculation Method Based on Light Field Image Rendering

Xin¹,

Xu²,

Zhang³

et al. 2019

Preprint

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A fast calculation method for the full parallax high-resolution hologram is proposed based on the elemental light field image (EI) rendering. A 3D object located near the holographic plane is firstly rendered as multiple EIs with a pinhole array. Each EI is interpolated and multiplied by a divergent sphere wave and interfered with a reference wave to form a hogel. Parallel acceleration is used to calculate the high-resolution hologram because calculation of each hogel is independent. A high-resolution hologram with four billion pixels is calculated only within 8 minutes. Full parallax high-resolution 3D displays are realized by optical reconstructions.

show abstract

Section: Experiments and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High-Resolution Hologram Calculation Method Based on Light Field Image Rendering

Xin¹,

Xu²,

Zhang³

et al. 2019

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, those methods are not effective for reducing the calculation burden for high-resolution hologram. We have proposed frequency fusing methods similar to holographic stereogram for full-parallax image hologram [11] and color rainbow hologram [10] calculation with high efficiency but the sizes of calculated holograms are limited by the RAM (Random Access Memory) of computer. Rectangular tiling algorithms have been proposed for high-resolution hologram calculation free of limitation from computer RAM [19,20].…”

Section: Introductionmentioning

confidence: 99%

High-Resolution Hologram Calculation Method Based on Light Field Image Rendering

Yang¹,

Xu²,

Zhang³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

A fast calculation method for the full parallax high-resolution hologram is proposed based on the elemental light field image (EI) rendering. A 3D object located near the holographic plane is firstly rendered as multiple EIs with a pinhole array. Each EI is interpolated and multiplied by a divergent sphere wave and interfered with a reference wave to form a hogel. Parallel acceleration is used to calculate the high-resolution hologram because calculation of each hogel is independent. A high-resolution hologram with the resolution of 20,0000×20,0000 pixels is calculated only within 8 minutes. Full parallax high-resolution 3D displays are realized by optical reconstructions.

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“…It is possible to implement computer-generated holograms (CGH) for a holographic 3D display [1,2]. High resolution holograms such as rainbow holograms and Fresnel holograms have been proposed [3,4]. Many dynamic holographic display solutions have also been implemented [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A Fast Computer-Generated Holographic Method for VR and AR Near-Eye 3D Display

2019

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A fast computer-generated holographic method with multiple projection images for a near-eye VR (Virtual Reality) and AR (Augmented Reality) 3D display is proposed. A 3D object located near the holographic plane is projected onto a projection plane to obtain a plurality of projected images with different angles. The hologram is calculated by superposition of projected images convolution with corresponding point spread functions (PSF). Holographic 3D display systems with LED as illumination, 4f optical filtering system and lens as eyepiece for near-eye VR display and holographic optical element (HOE) as combiner for near-eye AR display are designed and developed. The results show that the proposed calculation method is about 38 times faster than the conventional point cloud method and the display system is compact and flexible enough to produce speckle noise-free high-quality VR and AR 3D images with efficient focus and defocus capabilities.

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Computer generated full-parallax synthetic hologram based on frequency mosaic

Cited by 9 publications

References 16 publications

High-Resolution Hologram Calculation Method Based on Light Field Image Rendering

High-Resolution Hologram Calculation Method Based on Light Field Image Rendering

High-Resolution Hologram Calculation Method Based on Light Field Image Rendering

A Fast Computer-Generated Holographic Method for VR and AR Near-Eye 3D Display

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