Real-time shader rendering of holographic stereograms

Smithwick, Quinn; Barabas, James; Smalley, Daniel; Bove, V. Michael

doi:10.1117/12.808999

Cited by 26 publications

(12 citation statements)

References 8 publications

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“…When the possibility of holographic television was first discussed, it was commonly felt that the large pixel counts needed would forever doom the idea to impracticality. But as displays have developed and as available computation at the receiver has increased, thinking has turned to generating the diffraction pattern directly at the display from a 3-D model (graphics processors used in personal computers and game consoles have proven quite suited to this) [4] or an array of 2-D views [5] rather than attempting to compress a hologram itself and transmit it. Also, as noted above, the pixel resolution for a holographic television will be a function of the display size and thus transmitting a hologram directly presents problems if a range of screen sizes exists.…”

Section: • Suitable Electro-opticsmentioning

confidence: 99%

What is Holographic Television, and will it Ever Be in My Living Room?

Bove

2010

SMPTE International Conference on Stereoscopic 3D for Media and Entertainment

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For a 3-D television viewing experience to be maximally realistic, it needs to be autostereoscopic (requiring no glasses), and present not just two-view stereopsis but continuous parallax and other perceptual cues to depth such as visual accommodation (focusing). The display technology most likely to able to offer these features to consumers is holographic television. In this presentation I describe the principles behind diffractive 3-D displays, review the history of holo-video, examine relevant developments in standards and technology (in particular the application of off-theshelf graphics processors for holographic displays), and connect these with work at the MIT Media Laboratory in developing a holo-video display suitable for consumer use.

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Section: • Suitable Electro-opticsmentioning

confidence: 99%

What is Holographic Television, and will it Ever Be in My Living Room?

Bove

2010

SMPTE International Conference on Stereoscopic 3D for Media and Entertainment

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“…The method allows for synthesis of a very large CGH [35] but is prone to errors at oblique incidence. Computation is accelerated if occlusion is included in a light-ray rendering process from multiple 2D projection images during the synthesis of a CGH as an HS [51]. As the method suffers from decrease of angular resolution in deep scenes, accuracy is improved by processing occlusion in the lightray domain along with sampling the angular information from the projection images.…”

Section: Methods For Computer Generation Of Holographic Fringe Patternsmentioning

confidence: 99%

3D Capture and 3D Contents Generation for Holographic Imaging

Stoykova¹,

Kang²,

Kim³

et al. 2017

Holographic Materials and Optical Systems

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The intrinsic properties of holograms make 3D holographic imaging the best candidate for a 3D display. The holographic display is an autostereoscopic display which provides highly realistic images with unique perspective for an arbitrary number of viewers, motion parallax both vertically and horizontally, and focusing at different depths. The 3D content generation for this display is carried out by means of digital holography. Digital holography implements the classic holographic principle as a two-step process of wavefront capture in the form of a 2D interference pattern and wavefront reconstruction by applying numerically or optically a reference wave. The chapter follows the two main tendencies in forming the 3D holographic content-direct feeding of optically recorded digital holograms to a holographic display and computer generation of interference fringes from directional, depth and colour information about the 3D objects. The focus is set on important issues that comprise encoding of 3D information for holographic imaging starting from conversion of optically captured holographic data to the display data format, going through different approaches for forming the content for computer generation of holograms from coherently or incoherently captured 3D data and finishing with methods for the accelerated computing of these holograms.

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“…In contrast to our earlier stereogram approaches 4,7 which employ arrays of directional elements ("direls," which can emit variable amounts of light in each direction under a fixed wavefront curvature constraint) and holographic elements ("hogels," which can emit variable amounts of light in each direction as plane waves), the DSC Panoragram approach employs arrays of wavefront elements ("wafels"). In contrast to the direl and hogel, the wafel's ability to directly generate arbitrary, positionally-variant wavefront curvature (rather than approximate such curvature through the ensemble of many constant-frequency wavelets) allows for better approximation of ideal wavefronts (e.g., those produced by Fresnel holograms) in addition to providing a significant computational advantage.…”

Section: Diffraction Specific Coherent Panoramagrams: Foundation and mentioning

confidence: 99%

Diffraction specific coherent panoramagrams of real scenes

et al. 2011

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We have previously introduced the Diffraction Specific Coherent Panoramagram -a multi-view holographic stereogram that provides correct visual accommodation as well as smooth motion parallax with far fewer views than a normal stereogram. This method uses scene depth information to generate directionally-varying wavefront curvature, and can be computed at interactive rates using off-the-shelf graphics processors. In earlier work we used z-buffer information associated with parallax views rendered from synthetic graphics models; in this paper we demonstrate the computation of Diffraction Specific Coherent Panoramagrams of real-world scenes captured by cameras.

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Real-time shader rendering of holographic stereograms

Cited by 26 publications

References 8 publications

What is Holographic Television, and will it Ever Be in My Living Room?

What is Holographic Television, and will it Ever Be in My Living Room?

3D Capture and 3D Contents Generation for Holographic Imaging

Diffraction specific coherent panoramagrams of real scenes

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