Display of 3D Holoscopic content on ... - Brunel University

ICT Project <strong>3D</strong> VIVANT– Deliverable 6.4 

Contract no.: 

248420 

<strong>Display</strong> <strong>of</strong> <strong>3D</strong> <strong>Holoscopic</strong> Content on 

Auto-stereoscopic <strong>Display</strong> 

Project Number: 

Project title: 

Deliverable Type: 

CEC Deliverable Number: 

248420 

<strong>3D</strong> VIVANT 

Public 

Resubmission Delivery Date: 15 th September 2011 

Actual Delivery Date: 1 st September 2011 

Title <strong>of</strong> the Deliverable: 

Workpackage: 

Nature <strong>of</strong> the Deliverable: 

Organisations: 

IST-248420/Brunel/WP06/PU/PR/Del-6-4 

<strong>Display</strong> <strong>of</strong> <strong>3D</strong> <strong>Holoscopic</strong> Content on Auto-stereoscopic <strong>Display</strong>s 

WP6 

Report 

1 Brunel University Brunel 

2 Centre for Research and Technology Hellas – Informatics and 

Telematics Institute 

3 Institut für Rundfunktechnik GmbH 

4 Holografika 

5 RAI research centre 

6 Rundfunk Berlin-Brandenburg 

7 Instituto de Telecomunicações 

8 European Broadcast Union 

9 Arnold & Richter Cine Technik 

Authors: 

Circulation List: 

Amar Aggoun, Emmanuel Tsekleves Rafiq Swash and Shafik 

Salih 

Partners and Public on Internet 

Keywords: <strong>3D</strong> <strong>Display</strong>s 

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Contents 

FIGURE CAPTIONS ........................................................................................................................................... 3 

1. INTRODUCTION ....................................................................................................................................... 4 

1.1 EXECUTIVE SUMMARY .......................................................................................................................... 4 

1.2 DELIVERABLE STRUCTURE .................................................................................................................... 4 

2. <strong>3D</strong> DISPLAYS .............................................................................................................................................. 4 

2.1 MULTIVIEW AUTO-STEREOSCOPIC DISPLAYS ........................................................................................ 4 

2.2 <strong>3D</strong> HOLOSCOPIC DISPLAYS .................................................................................................................... 6 

3. COMPUTER GENERATED <strong>3D</strong> HOLOSCOPIC IMAGES. .................................................................. 9 

4. DISPLAY OF <strong>3D</strong> HOLOSCOPIC CONTENT ON MULTIVIEW STEREO DISPLAYS ................. 11 

4.1 ALIOSCOPY <strong>3D</strong> AUTO-STEREOSCOPIC DISPLAY .................................................................................. 12 

4.2 GENERATING <strong>3D</strong> HOLOSCOPIC CONTENT FOR ALIOSCOPY <strong>3D</strong> AUTO-STEREOSCOPIC DISPLAY ........... 15 

5. CONCLUSION .......................................................................................................................................... 16 

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FIGURE CAPTIONS 



FIGURE 1: MULTIVIEW AUTO-STEREOSCOPIC DISPLAY. ........................................................................................................ 6 

FIGURE 2: THE SLANTED ARRANGEMENT OF THE LENTICULAR LENS AND PIXELS IN THE MULTIVIEW AUTO-STEREOSCOPIC DISPLAYS. .... 6 

FIGURE 3: RECORDING OF A <strong>3D</strong> HOLOSCOPIC IMAGE. ........................................................................................................ 7 

FIGURE 4: RECORDED <strong>3D</strong> HOLOSCOPIC CONTENT SHOWING A 2D ARRAY OF MICRO-IMAGES. .................................................... 7 

FIGURE 5: <strong>3D</strong> HOLOSCOPIC DISPLAY. .............................................................................................................................. 8 

FIGURE 6: UNIDIRECTIONAL <strong>3D</strong> HOLOSCOPIC DISPLAY. ...................................................................................................... 8 

FIGURE 7: LENTICULAR SHEET MODEL IN INTEGRAL RAY TRACER. ........................................................................................... 9 

FIGURE 8: MICRO-LENS ARRAY IN INTEGRAL RAY TRACING. ................................................................................................ 10 

FIGURE 9: CAMERA MODEL OF <strong>3D</strong> HOLOSCOPIC IMAGING FOR COMPUTER GRAPHICS. ............................................................ 10 

FIGURE 10: CUTLERY SCENE IN OPENGL. ....................................................................................................................... 11 

FIGURE 11: CUTLERY SCENE IN OPENGL AFTER PROJECTION THROUGH A VIRTUAL LENTICULAR LENS ARRAY. ................................ 11 

FIGURE 12 - STEPS OF GENERATING INTERLACED IMAGE TO BE DISPLAYED ON ALIOSCOPY <strong>3D</strong> DISPLAY ....................................... 13 

FIGURE 13 - STEPS OF GENERATING 8 CAMERA IMAGES USING THE PLUG-INS/SCRIPTS FOR ALIOSCOPY MIX & PLAY ASSISTANT ...... 14 

FIGURE 14 – STEPS OF GENERATING INTEGRAL IMAGE TO BE DISPLAYED ON ALIOSCOPY <strong>3D</strong> DISPLAY .......................................... 15 

FIGURE 15 - PLAY-BACK ON <strong>3D</strong> HOLOSCOPIC CONTENT ON ALIOSCOPY DISPLAY .................................................................... 16 

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1. INTRODUCTION 

1.1 EXECUTIVE SUMMARY 

This document presents an update on the display <strong>of</strong> <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> on commercially available 

<strong>3D</strong> auto-stereoscopic display systems. Its main objective is to report the work carried out in the 

context <strong>of</strong> WP6/Task6.2 and to serve as a guideline during the deployment <strong>of</strong> the full parallax <strong>3D</strong> 

<strong>Holoscopic</strong> display. The report also discusses the procedures for computer generated <strong>3D</strong> <strong>Holoscopic</strong> 

<strong>content</strong>. 

Stereoscopic <strong>3D</strong> displays had been launched on the market by several companies worldwide such as 

Philips, Sharp, Alioscopy and Newsight Corporation. However, auto-stereoscopic <strong>3D</strong> <strong>content</strong> suffers 

from the eye fatigue issues. Since <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> presentation with horizontal parallax can 

be achieved by using lenticular sheet in association with an LCD. <strong>3D</strong> VIVANT will investigate the 

possibility <strong>of</strong> presenting <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> on commercially available auto-stereoscopic displays 

based on the principles <strong>of</strong> lenticular array. 

Initial experimentations were carried out on the Philips display. A s<strong>of</strong>tware tool for remapping <strong>of</strong> the 

<strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> was developed. However the results were unsatisfactory due to lack 

information regarding the lenticular sheet used in the Philips system. A substantial amount <strong>of</strong> test and 

adaptations <strong>of</strong> some finding were carried out to find out a solution. 

The latest experiments were carried out on the Alioscopy <strong>3D</strong> <strong>Display</strong> and a s<strong>of</strong>tware tools was 

developed to generate <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> for the display. The results are extremely satisfactory 

and for the first time it is proved that <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> can be displayed on commercially 

available Multi-view auto-stereoscopic displays. 

1.2 DELIVERABLE STRUCTURE 

The rest <strong>of</strong> the document is structured as follows: 

Section 2 describes <strong>3D</strong> display technologies, mainly focusing on multiview displays and <strong>3D</strong> 

<strong>Holoscopic</strong> displays. 

Section 3 provides a brief discussion <strong>of</strong> the computer generation <strong>of</strong> <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong>. Computer 

generated unidirectional <strong>3D</strong> <strong>Holoscopic</strong> are used to demonstrated the display <strong>of</strong> <strong>3D</strong> <strong>Holoscopic</strong> 

<strong>content</strong> on multiview stereo displays. 

Section 4 describes the investigations carried out in attempt to display <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> on 

multiview stereo display. A mapping strategy <strong>of</strong> the <strong>3D</strong> <strong>Holoscopic</strong> data <strong>content</strong> on the Alioscopy 

<strong>3D</strong> mutiview stereo display is discussed and results provided. 

Section 5 presents some general remarks regarding <strong>3D</strong> holoscopic video displays and summarizes the 

conclusions drawn for this deliverable. 

2. <strong>3D</strong> DISPLAYS 

2.1 MULTIVIEW AUTO-STEREOSCOPIC DISPLAYS 

The concept <strong>of</strong> using a lenticular lens array together with a multiview stereo image has long been 

used in <strong>3D</strong> photography both for entertainment and pr<strong>of</strong>essional purposes. The combination <strong>of</strong> a 

lenticular and an electronic display provides an optically efficient way <strong>of</strong> making an electronic <strong>3D</strong> 

display which does not require the viewer to wear special glasses. This removes a key barrier to 

acceptance <strong>of</strong> <strong>3D</strong> displays for everyday use but requires a significant change in approach to <strong>3D</strong> 

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display design. Auto-stereoscopic displays using micro-optics in combination with an LCD element 

have become attractive to display designers and several new <strong>3D</strong> display types are now available 

commercially. 

Auto-stereoscopic displays have been demonstrated using a range <strong>of</strong> optical elements in combination 

with an LCD including: 

• Parallax barriers, optical apertures aligned with columns <strong>of</strong> LCD pixels. 

• Lenticular optics, cylindrical lenses aligned with columns <strong>of</strong> LCD pixels. 

Currently there are a number <strong>of</strong> <strong>3D</strong> <strong>Display</strong>s available on the market which uses the combination <strong>of</strong> 

lenticular optics in combination with LCD panels. Lenticular elements used in <strong>3D</strong> displays are 

typically cylindrical lenses arranged vertically with respect to a 2D display such as an LCD as shown 

in figure 1. The cylindrical lenses direct the diffuse light from a pixel so it can only be seen in a 

limited angle in front <strong>of</strong> the display. In the case <strong>of</strong> two views, this allows different pixels to be 

directed to either the left or right viewing windows. However such a technology is used for 

multiview stereo displays to allow freedom <strong>of</strong> viewing <strong>3D</strong> <strong>content</strong> by more than one observer. For 

example a nine views display will use nine images, which are interlaced to form nine group <strong>of</strong> pixels 

per lenticular. In this case each pixel in every group <strong>of</strong> nine pixels is directed to a different viewing 

window. 

There are several drawbacks to the basic multi-view approach that are particularly apparent when 

electronic displays are used. The first is there is a black mask between LCD pixels and this is imaged 

into dark lines between each view window, which is distracting to observers when their eye crosses a 

window boundary. Also images with any significant depth will result in an image-flipping artefact as 

the observer moves their eye across one view window and into the next. Finally as more views are 

used the horizontal resolution <strong>of</strong> the images decreases rapidly. To overcome these problems Philips 

proposed a new approach to multi-view LCD display. A significant step forward was made by 

positioning the lenticular array at an angle to the LCD pixel array as shown in figure 2. This mixes 

adjacent views reducing image flipping problems and spreading the effect <strong>of</strong> the black mask making 

it less visible. The other benefit <strong>of</strong> this design is that each view has a better aspect ratio, rather than 

splitting the display horizontally into many views both horizontal and vertical directions are split. 

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Figure 1: Multiview auto-stereoscopic display. 

Slanted 

Lenticular optics 

LCD Panel 

Figure 2: The Slanted arrangement <strong>of</strong> the lenticular lens and pixels in the multiview auto-stereoscopic displays. 

2.2 <strong>3D</strong> HOLOSCOPIC DISPLAYS 

<strong>3D</strong> <strong>Holoscopic</strong> imaging (also known as Integral imaging) is a technique that is capable <strong>of</strong> creating 

and encoding a true volume spatial optical model <strong>of</strong> the object scene in the form <strong>of</strong> a planar intensity 

distribution by using unique optical components. It is akin to holography in that <strong>3D</strong> information 

recorded on a 2D medium can be replayed as a full <strong>3D</strong> optical model, however, in contrast to 

holography, coherent light sources are not required. This conveniently allows more conventional live 

capture and display procedures to be adopted. With recent progress in the theory and microlens 

manufacturing, integral imaging is becoming a practical and prospective <strong>3D</strong> display technology and is 

attracting much interest in the <strong>3D</strong> area. 

To record a <strong>3D</strong> <strong>Holoscopic</strong> image a regularly spaced array <strong>of</strong> small lenslets closely packed together in 

contact with an image sensor (as shown in figure 3). Each lenslet views the scene at a slightly 

different angle to its neighbour and therefore a scene is captured from many view points and parallax 

information is recorded. After processing, if the photographic transparency is re-registered with the 

original recording array and illuminated by diffuse white light from the rear, the object will be 

constructed in space by the intersection <strong>of</strong> ray bundles emanating from each <strong>of</strong> the lenslets. 

A <strong>3D</strong> <strong>Holoscopic</strong> image is recorded in a regular block pixel pattern. The planar intensity distribution 

representing a <strong>3D</strong> <strong>Holoscopic</strong> image is comprised <strong>of</strong> 2D array <strong>of</strong> M×M micro-images due to the 

structure <strong>of</strong> the microlens array used in the capture and replay. The rectangular aperture at the front <strong>of</strong> 

the camera and the regular structure <strong>of</strong> the hexagonal microlenses array used in the hexagonal grid 

(recording microlens array) gives rise to a regular ‘brick structure’ in the intensity distribution as 

illustrated in Figure 4. 

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Recording 

Medium 

Microlens 

Array 

Figure 3: Recording <strong>of</strong> a <strong>3D</strong> <strong>Holoscopic</strong> Image. 

The replay <strong>of</strong> the <strong>3D</strong> Integral images is achieved by placing a microlens array on the top <strong>of</strong> the 

recoded planar intensity distributions as shown in figure 5. The microlens array has to match exactly 

the structure <strong>of</strong> the planar intensity distribution. 

Figure 4: Recorded <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> showing a 2D Array <strong>of</strong> micro-images. 

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Microlens Array 

LCD Panel 

Figure 5: <strong>3D</strong> <strong>Holoscopic</strong> <strong>Display</strong>. 

A special case <strong>of</strong> <strong>3D</strong> <strong>Holoscopic</strong> imaging system is to replace the 2D array <strong>of</strong> microlenses with a 1D 

cylindrical microlens array as shown in figure 6. The resulting images contain parallax in the 

horizontal direction only and is referred to as Unidirectional <strong>3D</strong> <strong>Holoscopic</strong> images. The M 

vertically running bands present in the planar intensity distribution captured by the integral <strong>3D</strong> 

camera are due to the regular structure <strong>of</strong> the 1D cylindrical microlens array used in the capture 

process. 

Computer generated unidirectional <strong>3D</strong> <strong>Holoscopic</strong> are used to demonstrated the display <strong>of</strong> <strong>3D</strong> 

<strong>Holoscopic</strong> <strong>content</strong> on multiview stereo displays. For this purpose the next section will provide a 

brief discussion <strong>of</strong> the computer generation <strong>of</strong> <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong>. 

Lenticular 

Optics 

LCD Panel 

Figure 6: Unidirectional <strong>3D</strong> <strong>Holoscopic</strong> <strong>Display</strong>. 

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3. COMPUTER GENERATED <strong>3D</strong> HOLOSCOPIC IMAGES. 

A computer generated synthetic <strong>3D</strong> holoscopic image is presented as a two dimensional distribution 

<strong>of</strong> intensities termed a lenslet-encoded spatial distribution (LeSD), which is ordered directly by the 

parameters <strong>of</strong> a decoding array <strong>of</strong> micro lenses used to replay the three-dimensional synthetic image. 

When viewed, the image exhibits continuous parallax within a viewing zone dictated by the field 

angle <strong>of</strong> the array <strong>of</strong> micro-lenses. The replayed image is a volumetric optical model, which exists in 

space at a location independent <strong>of</strong> the viewing position. This occurs because, unlike stereoscopic 

techniques, which present planar perspective views to the viewer’s eyes, each point within the volume 

<strong>of</strong> a <strong>3D</strong> holoscopic image is generated by the intersection <strong>of</strong> ray pencils projected by the individual 

micro-lenses. 

Due to the nature <strong>of</strong> the recording process <strong>of</strong> <strong>3D</strong> <strong>Holoscopic</strong> imaging, many changes to the camera 

model used in standard computer generation s<strong>of</strong>tware are carried out. To generate a unidirectional <strong>3D</strong> 

<strong>Holoscopic</strong> image using a lenticular sheet, each lens acts like a cylindrical camera. A strip <strong>of</strong> pixels is 

associated with each lens forming a micro-image. Each cylindrical lens records a micro-image <strong>of</strong> the 

scene from a different angle as shown in the Figure 7. For micro-lens arrays each lens acts like a 

square or a hexagonal camera depending on the structure <strong>of</strong> the lenses, as shown in Figure 8. In the 

lateral cross section <strong>of</strong> the lenticular or the micro-lenses, a pinhole model is used. In the case <strong>of</strong> 

lenticular sheets, the pinhole forms a straight line parallel to the axis <strong>of</strong> the cylindrical lens in the 

vertical direction. For each pixel, a primary ray is spawned. The recording path <strong>of</strong> the primary ray 

draws a straight line going forward towards the image plane and backward away from the image 

plane. Similar primary rays <strong>of</strong> neighbouring lenses are spawned to similar directions parallel to each 

other. Therefore highly correlated micro-images are produced which, is a property <strong>of</strong> <strong>3D</strong> holoscopic 

imaging. 

Figure 7: Lenticular sheet model in integral ray tracer. 

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Figure 8: Micro-lens array in integral ray tracing. 

The structure <strong>of</strong> the lenses and the camera model in the in <strong>3D</strong> <strong>Holoscopic</strong> computer graphics affects 

the way primary rays are spawned as well as the spatial coherence among them. 

The camera model used for each micro-lens is the pinhole approximation, where each micro-lens acts 

like a separate camera. The result is a set multiple cameras. Each <strong>of</strong> them records a micro-image <strong>of</strong> 

the virtual scene from a different angle (See figure 9). Primary rays pass through the centre <strong>of</strong> the 

micro-lens and the image plane. The scene image straddles the micro-lens array. Therefore there are 

two recording directions, in front and behind the micro-lens array. 

Figure 9: Camera model <strong>of</strong> <strong>3D</strong> <strong>Holoscopic</strong> imaging for computer graphics. 

The specific characteristics <strong>of</strong> <strong>3D</strong> holoscopic imaging, allows us to deal with each cylindrical lens 

separate from the others, and to measure the number <strong>of</strong> pixels behind each lens, focal length and the 

image width. All these parameters including the number <strong>of</strong> lenslets in the virtual cylindrical array are 

selected on the basis <strong>of</strong> the characteristics <strong>of</strong> the display device. 

The pixels intensity values <strong>of</strong> the micro-image for each lenslet are read, saved, and then mapped to 

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pixels locations on the screen so that all the vertical slots are displayed at the same time forming the 

<strong>3D</strong> holoscopic image. The location <strong>of</strong> the vertical elemental image on the computer screen is identical 

to the location <strong>of</strong> the corresponding lenslet in the virtual lenses array. 

Figure 10 shows the <strong>3D</strong> scene “cutlery” rendered in OpenGL. The scene was first built in <strong>3D</strong> max, 

and then exported by OpenGL via Blender and saved as MD2 files. Each object in the scene was 

exported, saved and uned as a separate MD2 file. Figure 11 shows the <strong>3D</strong> holoscopic image 

resulting from the projection <strong>of</strong> the scene through the virtual lenticular lens array. 

Figure 10: Cutlery scene in OpenGL. 

Figure 11: Cutlery scene in OpenGL after projection through a virtual lenticular lens array. 

4. DISPLAY OF <strong>3D</strong> HOLOSCOPIC CONTENT ON MULTIVIEW 

STEREO DISPLAYS 

Original experimentations was carried out on the Philips multiview auto-Stereoscopic display has 

been studied and experimented as an example <strong>of</strong> commercially available <strong>3D</strong> displays. A 20-inch <strong>3D</strong> 

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auto-stereoscopic display was designed to <strong>of</strong>fer lenticular lens design creating a variety <strong>of</strong> distinct <strong>3D</strong> 

views. The <strong>3D</strong> Auto-stereoscopic display has an embedded hardware that accepts 2D-plus-depth 

format and renders 9 views to enable multiple viewers to see <strong>3D</strong> images at any one time. 

The display player does not support 9-views <strong>content</strong> as input. However, given that the <strong>3D</strong> 

<strong>Holoscopic</strong> <strong>content</strong> is recorded as a single 2D data, then only the 2D input is used. Furthermore it is 

necessary to acquire the various parameter <strong>of</strong> the lenticular sheet used by the Philips including the 

slanting angle. Three important parameters namely, the focal length and pitch <strong>of</strong> each lenslet and the 

slanting angle <strong>of</strong> the lenticular sheet are required by the s<strong>of</strong>tware developed at Brunel University to 

computer generate <strong>3D</strong> <strong>Holoscopic</strong> images for the Philips display. Unfortunately it was difficult to 

acquire this information from Philips. So we have adapted the information on an earlier version 

published by Philips in 1999 for a 7 views <strong>3D</strong> LCD display. A s<strong>of</strong>tware tool has been developed to 

map the pixels <strong>of</strong> the 2D intensity distribution <strong>of</strong> a <strong>3D</strong> holoscopic image to fit into a slanted lenticular 

structure <strong>of</strong> the Philips display. Unfortunately this [rocedure did not provide satisfactory results due 

to 

(i) adapting the lenticular optical characteristics from previous development is not 

accurate enough and may have caused some <strong>of</strong> the problems; 

(ii) Missing information about the lenticular sheet such as the focal length and pitch <strong>of</strong> 

each lenslet; 

(iii) The display does not accept multiple inputs. 

Due to the fact that the auto-stereoscopic Philips display has been discontinued and no longer 

commercially available, it was not possible to get access to the necessary information to allow 

accurate mapping <strong>of</strong> the <strong>3D</strong> holoscopic image onto the display. 

To solve this problem, the Brunel team contacted a number <strong>of</strong> <strong>3D</strong> auto-stereoscopic diplay 

manufactures. Alioscopy <strong>3D</strong> Auto-Stereoscopic display is one <strong>of</strong> the systems studied and 

experimented with as an example <strong>of</strong> State <strong>of</strong> the art <strong>3D</strong> Auto-Stereoscopic <strong>Display</strong> to ensure the 

<strong>3D</strong>VIVANT <strong>content</strong>s (<strong>Holoscopic</strong> <strong>content</strong>) can be replayed on the Alioscopy <strong>3D</strong> <strong>Display</strong>. 

4.1 ALIOSCOPY <strong>3D</strong> AUTO-STEREOSCOPIC DISPLAY 

The 42-inch <strong>3D</strong> Auto-stereoscopic display is designed to <strong>of</strong>fer lenticular lens design creating 8 <strong>of</strong> 

distinct auto-Stereoscopic views. The <strong>3D</strong> Auto-stereoscopic display has a play-back s<strong>of</strong>tware which 

accepts Mixed-Content and Mixed-<strong>content</strong> can be generated using Alioscopy Mix & <strong>Display</strong> 

Assistant s<strong>of</strong>tware that accepts images from 8 cameras and then it renders 8 images into a single 

interlaced-image as shown in Figure 12. 

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Figure 12 - Steps <strong>of</strong> generating interlaced image to be displayed on Alioscopy <strong>3D</strong> <strong>Display</strong> 

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Alioscopy developed plug-ins/scripts for <strong>3D</strong> modelling commercial s<strong>of</strong>tware such as Cinema4d, 

Maya, and <strong>3D</strong>s MAX that can be used to generate <strong>content</strong> for the <strong>3D</strong> display and the steps/processes 

are shown in Figure 13. 

Figure 13 - Steps <strong>of</strong> generating 8 camera images using the plug-ins/scripts for Alioscopy Mix & Play 

Assistant 

The process <strong>of</strong> generating MIXED <strong>content</strong> for Alioscopy <strong>3D</strong> Auto-Stereoscopic display is studied and 

understood as it requires 8 perspective camera images or 8 rendered images from the Alioscopy plugins/scripts 

and then MIX and Play Assistant s<strong>of</strong>tware generates interlaced image with resolution <strong>of</strong> 

1920x1080 pixel (interlacing 8 * 960x540 images). 

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4.2 GENERATING <strong>3D</strong> HOLOSCOPIC CONTENT FOR ALIOSCOPY <strong>3D</strong> AUTO- 

STEREOSCOPIC DISPLAY 

A research is carried out to confirm that <strong>3D</strong>VIVANT <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> can be replayed back on 

State <strong>of</strong> the Art <strong>3D</strong> <strong>Display</strong> (Alioscopy <strong>3D</strong> <strong>Display</strong>). Figure 14 shows the steps involved in 

generating <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> and as seen there are 8 orthographic images generated using <strong>3D</strong> 

holoscopic camera and then those images are feed into the Mix & Play Assistant s<strong>of</strong>tware to mix and 

replayed on Alioscopy <strong>3D</strong> <strong>Display</strong>. 

Figure 14 – Steps <strong>of</strong> generating integral image to be displayed on Alioscopy <strong>3D</strong> <strong>Display</strong> 

A couple <strong>of</strong> video clips are generated for this display and the steps are (1) a sequences <strong>of</strong> bitmap 

images are generated using the steps 1 to 4 (see Figure 14) and then (2) the bitmap images are 

converted to a video clips. The resulting images are shown in Figure 15. 

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Figure 15 - Play-back on <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> on Alioscopy <strong>Display</strong> 

5. CONCLUSION 

In this report we have shown that the <strong>3D</strong> <strong>Holoscopic</strong> <strong>content</strong> with horizontal parallax can be 

displayed on commercially available multiview auto-stereoscopic displays. To our knowledge this 

the first time this has been achieved. For this study the Alioscopy display has been used. 

Part <strong>of</strong> <strong>3D</strong> VIVANT project objectives is to design a <strong>3D</strong> <strong>Holoscopic</strong> display. This study will form the 

basis <strong>of</strong> the development <strong>of</strong> the <strong>3D</strong> <strong>Holoscopic</strong> display with full parallax based on a combination <strong>of</strong> 

microlens arrays with LCD. 

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Display of 3D Holoscopic content on ... - Brunel University

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