Comparison of System Properties for Wave-Front Holographic Printers

Kang, Hoonjong; Stoykova, Elena; Yoshikawa, Hiroshi; Hong, Sunghee; Kim, Young‐Min

doi:10.1007/978-3-642-36359-7_156

Cited by 6 publications

(7 citation statements)

References 5 publications

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“…The input data formed from incoherently acquired perspective images of the 3D scene carry only directional information, and thus this printing method inevitably suffers from longitudinal distortion in the reconstruction of deep scenes. In contrast, the recently proposed holographic fringe and wavefront printers use as input data for the SLM a computer generated hologram (CGH) [9][10][11][12][13][14], which encodes both directional and depth information. In the fringe printer the CGH is directly transferred onto the holographic emulsion, without a reference beam during recording [9].…”

Section: Introductionmentioning

confidence: 99%

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Image-Quality Enhancement for a Holographic Wavefront Color Printer by Adaptive SLM Partitioning

Hong¹,

Stoykova²,

Kang³

et al. 2015

Journal of the Optical Society of Korea

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The wavefront printer records a volume-reflection hologram as a two-dimensional array of elemental holograms from computer-generated holograms (CGHs) displayed on a spatial light modulator (SLM). The wavefront coming from the object is extracted by filtering in the spatial-frequency domain. This paper presents a method to improve color reproduction in a wavefront printer with spatial division of exposures at primary colors, by adaptive partitioning of the SLM in accordance with the color content encoded in the input CGHs, and by the controllable change of exposure times for the recording of primary colors. The method is verified with a color wavefront printer with demagnification of the object beam. The quality of reconstruction achieved by the proposed method proves its efficiency in eliminating the stripe artifacts that are superimposed on reconstructed images in conventional mosaic recording.

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Section: Introductionmentioning

confidence: 99%

“…The output of the wavefront printer, on the other hand, is a volume reflection hologram. This method relies on extraction of the wavefront coming from the 3D object, and thus resembles an analog holography recording process [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Image-Quality Enhancement for a Holographic Wavefront Color Printer by Adaptive SLM Partitioning

Hong¹,

Stoykova²,

Kang³

et al. 2015

Journal of the Optical Society of Korea

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“…In the experiment, to make 3D imaging achieve full depth cues, we employed a holographic wavefront recording method [7,11]. A computer-generated hologram (CGH) was first pre-calculated for generating a 3D object, using an iteration algorithm [25], and then was loaded on the SLM.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, we employ a wavefront method to construct a 3D holographic display. Compared to holographic stereogram method which results in distorted 3D space representation of deep scenes [7,11], this method can offer undistorted reconstruction. Our presented 3D holographic display possesses RGB colors, high brightness and a video refresh rate, thus holding great potential for wide applications.…”

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confidence: 99%

35‐4: Color holographic display using quantum‐dot doped liquid crystal

Wang

Zhou

et al. 2019

Symp Digest of Tech Papers

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We propose the use of a nematic liquid crystal (LC) doped with quantum dots (QDs) to realize a color 3D holographic display. The material has super large optical nonlinearity and could achieve a fast response time ~ 8.46ms. The constructed 3D display shows images at different depths and vivid RGB images at a video refresh rate. Author KeywordsColor holographic display; nematic liquid crystal; quantum dots. Objective and backgroundHolographic display has attracted worldwide attention as a promising three-dimensional (3D) display technique. It can reconstruct both the phase and amplitude information of an object or a scene, as if it comes from a nature scene [1-3]. However, it is difficult to display a wide-view and color holographic images by using a traditional electrically-addressed spatial light modulator(SLM) due to its limited bandwidth [4][5][6][7]. Therefore, photorefractive (PR) materials become a kind of choice to produce a vivid 3D display [8]. Among them, photorefractive polymer has many advantages such as high spatial resolution and high diffraction efficiency. Nevertheless, photorefractive polymer cannot achieve a fast response time to realize a real-time display. In our previous work, without applying any external voltage, we employed an azo-dye doped nematic LC [9] material to display a 25-Hz holographic video. In addition, a quantum dot (QD) doped nematic LC was also applied for holographic display [10], which could achieve high efficiency and fast response, simultaneously.

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“…In wavefront printing, the holograms are calculated by a computer, but the algorithm is different from that of holographic fringe printing. Holographic fringe patterns are diffracted and propagated to the recording medium, interfered with by the reference beam, and reflection volume-type holograms can be achieved [18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Progress in the Synthetic Holographic Stereogram Printing Technique

Su¹,

Yan²,

Huang³

et al. 2018

Applied Sciences

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Abstract:The synthetic holographic stereogram printing technique can achieve a three-dimensional (3D) display of a scene. The development and research status of the synthetic holographic stereogram printing technique is introduced in this paper. We propose a two-step method, an infinite viewpoint camera method, a single-step Lippmann method, a direct-write digital holography (DWDH) method and an effective perspective images' segmentation and mosaicking (EPISM) method. The synthetic holographic stereogram printing technique is described, including the holographic display with large format, the large field of view with no distortion, the printing efficiency, the color reproduction characteristics, the imaging quality, the diffraction efficiency, the development of a holographic recording medium, the noise reduction, and the frequency response analysis of holographic stereograms.

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Comparison of System Properties for Wave-Front Holographic Printers

Cited by 6 publications

References 5 publications

Image-Quality Enhancement for a Holographic Wavefront Color Printer by Adaptive SLM Partitioning

Image-Quality Enhancement for a Holographic Wavefront Color Printer by Adaptive SLM Partitioning

35‐4: Color holographic display using quantum‐dot doped liquid crystal

Progress in the Synthetic Holographic Stereogram Printing Technique

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