Laser scanning based autostereoscopic 3D display with pupil tracking

Erden, Erdem; Kishore, V.C.; Ürey, Hakan; Baghsiahi, Hadi; Willman, Eero; Day, SE; Selviah, David R.; Fernández, FA; Surman, Phil

doi:10.1109/leos.2009.5343494

Cited by 9 publications

(11 citation statements)

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“…The light engine module in the projector version comprises red (640 nm), green (532 nm) and blue laser (473 nm) arrays coupled into a multimode optical fiber which, together with two cascaded cylindrical microlens arrays [11,12] homogenize and shape the beam into a 10 mm by 250 μm vertical light line. The optical design details of the beam-shaping optics were covered in [7,9,13]. Previously [9] the lasers were only homogenized using a dual microlens array homogenizer [11,12]; however, an undesired periodic light modulation was observed along the vertical line due to the periodicity of the microlenses.…”

Section: Multi-viewer Autostereoscopic Dynamic Exit Pupil Display Systemmentioning

confidence: 99%

“…Autostereoscopic 3D displays [1] display 3D images without the need for special viewer spectacles by using one of the following methods: (i) Holographic [2], (ii) Multi-view [3] (iii) Light field [4], (iv) Volumetric [5] or (v) Dynamic Exit Pupil [6][7][8][9]. This paper is concerned with the most recent method; that of the dynamic exit pupil (DEP) which had only been proposed but not experimentally demonstrated.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic exit pupil trackers for autostereoscopic displays

Akşit¹,

Baghsiahi²,

Surman³

et al. 2013

Opt. Express

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This paper describes the first demonstrations of two dynamic exit pupil (DEP) tracker techniques for autostereoscopic displays. The first DEP tracker forms an exit pupil pair for a single viewer in a defined space with low intraocular crosstalk using a pair of moving shutter glasses located within the optical system. A display prototype using the first DEP tracker is constructed from a pair of laser projectors, pupil-forming optics, moving shutter glasses at an intermediate pupil plane, an image relay lens, and a Gabor superlens based viewing screen. The left and right eye images are presented time-sequentially to a single viewer and seen as a 3D image without wearing glasses and allows the viewer to move within a region of 40 cm × 20 cm in the lateral plane, and 30 cm along the axial axis. The second DEP optics can move the exit pupil location dynamically in a much larger 3D space by using a custom spatial light modulator (SLM) forming an array of shutters. Simultaneous control of multiple exit pupils in both lateral and axial axes is demonstrated for the first time and provides a viewing volume with an axial extent of 0.6-3 m from the screen and within a lateral viewing angle of ± 20° for multiple viewers. This system has acceptable crosstalk (< 5%) between the stereo image pairs. In this novel version of the display the optical system is used as an advanced dynamic backlight for a liquid crystal display (LCD). This has advantages in terms of overall display size as there is no requirement for an intermediate image, and in image quality. This system has acceptable crosstalk (< 5%) between the stereo image pairs.

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Section: Multi-viewer Autostereoscopic Dynamic Exit Pupil Display Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic exit pupil trackers for autostereoscopic displays

Akşit¹,

Baghsiahi²,

Surman³

et al. 2013

Opt. Express

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“…The HELIUM3D display [77] does not incorporate a flat panel display and image information is supplied by a fast light valve (LV) that controls the output of red, green, and blue (RGB) lasers. Multiple steerable exit pupils are created dynamically where an image column scans the screen horizontally and the directions of the light emerging from the column are controlled by an SLM.…”

Section: Muted Helium3dmentioning

confidence: 99%

Stereoscopic and Autostereoscopic Displays

Surman

2012

3d-Tv System With Depth-Image-Based Rendering

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This chapter covers the state of the art in stereoscopic and autostereoscopic displays. The coverage is not exhaustive but is intended that in the relatively limited space available a reasonably comprehensive snapshot of the current state of the art can be provided. In order to give a background to this, a brief introduction to stereoscopic perception and a short history of stereoscopic displays is given. Holography is not covered in detail here as it is really a separate area of study and also is not likely to be the basis of a commercially viable display within the near future.Keywords Autostereoscopic display Á Binocular parallax Á Crosstalk Á Depth cue Á Disparity Á Geometrical distortion Á Glasses Á Head-tracked display Á Image artifact Á Integral imaging Á Light field display Á Monocular cue Á Multi-view display Stereoscopic display Á Stereoscopic perception Á Viewing zone Á Volumetric display Stereoscopic PerceptionThere are many factors involved in stereoscopic perception, and the relative importance of contributory perceptual factors in natural vision is not necessarily the same as for an artificial image. Consider a natural scene being observed; when one eye is covered the image appears to lose very little realism. However, images reproduced on a display appear to be considerably more realistic when stereo is applied to the image. This is particularly well demonstrated if an image is viewed

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“…The cascade is trained using a boosting approach on a large and diverse face detection set [10]. Several other autostereoscopic systems incorporate this tracker either for single [9,7] or multiple participants [21,20,19]; the latter requiring laser-based hardware to accurately localize projection of the imagery. Our system also adopts [27], as a pre-cursor to more accurate localization of the eye regions.…”

Section: Related Workmentioning

confidence: 99%

Virtual Volumetric Graphics on Commodity Displays Using 3D Viewer Tracking

Malleson

Collomosse

2012

Int J Comput Vis

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Three dimensional (3D) displays typically rely on stereo disparity, requiring specialized hardware to be worn or embedded in the display. We present a novel 3D graphics display system for volumetric scene visualization using only standard 2D display hardware and a pair of calibrated web cameras. Our computer vision-based system requires no worn or other special hardware. Rather than producing the depth illusion through disparity, we deliver a full volumetric 3D visualization -enabling users to interactively explore 3D scenes by varying their viewing position and angle according to the tracked 3D position of their face and eyes. We incorporate a novel wand-based calibration that allows the cameras to be placed at arbitrary positions and orientations relative to the display. The resulting system operates at real-time speeds (∼ 25 fps) with low latency (120 − 225 ms) delivering a compelling natural user interface and immersive experience for 3D viewing. In addition to objective evaluation of display stability and responsiveness, we report on user trials comparing users' timings on a spatial orientation task.

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Laser scanning based autostereoscopic 3D display with pupil tracking

Abstract: Abstract-An autostereoscopic 3D display based on direct-view RGB laser projection via a transparent display screen is presented. Dynamic exit pupils are formed at the target eye locations with the help of a pupil tracker.

Cited by 9 publications

References 1 publication

Dynamic exit pupil trackers for autostereoscopic displays

Dynamic exit pupil trackers for autostereoscopic displays

Stereoscopic and Autostereoscopic Displays

Virtual Volumetric Graphics on Commodity Displays Using 3D Viewer Tracking

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