Color holography to produce highly realistic three-dimensional images

Bjelkhagen, Hans I.; Mirlis, E.

doi:10.1364/ao.47.00a123

Cited by 62 publications

(33 citation statements)

References 24 publications

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“…A color hologram can be recorded by a multiple-exposure method that forms each elemental hologram as a combination of three color channels [6,18]. The drawback of this approach is worsening of color reproduction, due to crosstalk between the RGB channels, and decrease in the light-sensitive material's dynamic range attributed to each color.…”

Section: Color Degradation In Mosaic Recordingmentioning

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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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: Color Degradation In Mosaic Recordingmentioning

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 multi-exposure method, the hogels were exposed by a single laser beam which combined the lasers of RGB colors simultaneously, and the recording effect depended on the dynamic range of recording material since there were three different gratings recorded in the region of the hologram [53]. In the space-division exposure method, the hogels were divided into different parts spatially, and each part was exposed with a single-color laser, and the diffracted light intensity would then decrease to one-third of that of monochromatic exposure as the recording density decreased.…”

Section: Color Reproduction Characteristicmentioning

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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“…Basically, the usual configuration uses a sensor which measures the reflectance of the sample, in this case, is the diffraction efficiency of the hologram, a source light that represents a standard illuminant or a source that reproduces the hologram and an algorithm that calculate the values of (1), (2) and (3). Many authors have used this method [1][2][3] , some of them in order to know the adequate wavelengths for the recording of color holograms, and others to know the reproducibility of the recording method [6][7][8] .…”

Section: Color Measurement In Holograms With Spectrometermentioning

confidence: 99%

Evaluation between methods for the color measurement in holograms by using a CMOS-RGB camera and a spectrometer

Palacios-Ortega

Prieto

2013

SPIE Proceedings

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Many models and methods commonly used in colorimetry have been incorporated to the study and knowledge of the colorimetric properties in the reflection color holograms; these methods have reported the possibilities of color reproduction in holograms. One method is based in calculating the color differences between the CIE-L*a*b* coordinates of the original object compared to the same values obtained for the reconstructed hologram; these values are calculated through the measurement of the spectral composition of the light in the reproduced hologram which are made with spectrometers. Other methods are based in the use of cameras for the color measurement, although, they are not commonly used for that ending in holography. This work presents the results of a comparative study between the use of spectrometers and RGB digital cameras for the color measurement in holograms. The diffraction efficiency of the holograms for a GretagMacbeth Colorchecker samples is measured through a spectrometer and their CIE-L*a*b* coordinates are calculated; the color differences are also calculated by taking as theoretical values the coordinates of the original object. A similar procedure is made by capturing the reconstructed images of the hologram through a CMOS-RGB camera, which requires a linearizing and characterizing procedure. The RGB coordinates of the original object are compared with the RGB coordinates of the reproduced hologram too.

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Color holography to produce highly realistic three-dimensional images

Cited by 62 publications

References 24 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

Progress in the Synthetic Holographic Stereogram Printing Technique

Evaluation between methods for the color measurement in holograms by using a CMOS-RGB camera and a spectrometer

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