Novel autostereoscopic single-user displays with user interaction

Hopf, Klaus; Chojecki, Paul; Neumannn, Frank; Przewozny, David

doi:10.1117/12.685881

Cited by 8 publications

(7 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To this effect, we observe that for a single-user with a stereoscopic display, only two views are sufficient at any given time to create 3-D perception. Therefore, tracking users' head and selectively transmitting only two required views to render the current viewing angle of the user can save significant bandwidth 1 An example of a autostereoscopic head-tracking display system with an integrated camera has been presented in [11], although it is also possible to employ a separate head tracking device. Since the views to be transmitted will vary in time according to user head position, we need random access to all views in the bitstream.…”

Section: Introductionmentioning

confidence: 99%

Client-Driven Selective Streaming of Multiview Video for Interactive 3DTV

Kurutepe

Civanlar²,

Tekalp

2007

IEEE Trans. Circuits Syst. Video Technol.

121

View full text Add to dashboard Cite

We present a novel client-driven multi-view video streaming system that allows a user watch 3-D video interactively with significantly reduced bandwidth requirements by transmitting a small number of views selected according to his/her head position. The user's head position is tracked and predicted into the future to select the views that best match the user's current viewing angle dynamically. Prediction of future head positions is needed so that views matching the predicted head positions can be prefetched in order to account for delays due to network transport and stream switching. The system allocates more bandwidth to the selected views in order to render the current viewing angle. Highly compressed, lower quality versions of some other views are also prefetched for concealment if the current user viewpoint differs from the predicted viewpoint. An objective measure based on the abruptness of the head movements and delays in the system is introduced to determine the number of additional lower quality views to be prefetched. The proposed system makes use of multi-view coding (MVC) and scalable video coding (SVC) concepts together to obtain improved compression efficiency while providing flexibility in bandwidth allocation to the selected views. Rate-distortion performance of the proposed system is demonstrated under different experimental conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

Client-Driven Selective Streaming of Multiview Video for Interactive 3DTV

Kurutepe

Civanlar²,

Tekalp

2007

IEEE Trans. Circuits Syst. Video Technol.

121

View full text Add to dashboard Cite

show abstract

“…The observer's distance from the panel can, with relatively low precision, for example be estimated from his apparent interocular distance compared to the real or an assumed real value (65mm). For the experiments described below Fraunhofer HHI has developed and utilized its own tracking software 20 , which has been optimized for the requirements raised by adaptive 3D-displays. As a support technology, eye-tracking will not be described in here in full detail.…”

Section: Contact-free Vision Based Eye Trackingmentioning

confidence: 99%

Evaluating motion parallax and stereopsis as depth cues for autostereoscopic displays

2011

View full text Add to dashboard Cite

The perception of space in the real world is based on multifaceted depth cues, most of them monocular, some binocular. Developing 3D-displays raises the question, which of these depth cues are predominant and should be simulated by computational means in such a panel. Beyond the cues based on image content, such as shadows or patterns, Stereopsis and depth from motion parallax are the most significant mechanisms supporting observers with depth information. We set up a carefully designed test situation, widely excluding undesired other distance hints. Thereafter we conducted a user test to find out, which of these two depth cues is more relevant and whether a combination of both would increase accuracy in a depth estimation task. The trials were conducting utilizing our autostereoscopic "Free2C"-displays, which are capable to detect the user eye position and steer the image lobes dynamically into that direction. At the same time, eye position was used to update the virtual camera's location and thereby offering motion parallax to the observer. As far as we know, this was the first time that such a test has been conducted using an autosteresocopic display without any assistive technologies. Our results showed, in accordance with prior experiments, that both cues are effective, however Stereopsis is by order of magnitude more relevant. Combining both cues improved the precision of distance estimation by another 30-40%.

show abstract

“…There has been a steady influx of new designs for stereo displays including autostereoscopic desktop displays1 head-mounted displays2, 3D cinema projectors3, medical visualization devices4, and more. These displays show the left and right eyes different projections of the scene stimulating binocular disparities consistent with a 3D scene.…”

Section: Introductionmentioning

confidence: 99%

Stereo display with time-multiplexed focal adjustment

et al. 2009

View full text Add to dashboard Cite

In stereo displays, binocular disparity creates a striking impression of depth. However, such displays present focus cues-blur and accommodation-that specify a different depth than disparity, thereby causing a conflict. This conflict causes several problems including misperception of the 3D layout, difficulty fusing binocular images, and visual fatigue. To address these problems, we developed a display that preserves the advantages of conventional stereo displays, while presenting correct or nearly correct focus cues. In our new stereo display each eye views a display through a lens that switches between four focal distances at very high rate. The switches are synchronized to the display, so focal distance and the distance being simulated on the display are consistent or nearly consistent with one another. Focus cues for points in-between the four focal planes are simulated by using a depth-weighted blending technique. We will describe the design of the new display, discuss the retinal images it forms under various conditions, and describe an experiment that illustrates the effectiveness of the display in maximizing visual performance while minimizing visual fatigue.

show abstract

Novel autostereoscopic single-user displays with user interaction

Cited by 8 publications

References 7 publications

Client-Driven Selective Streaming of Multiview Video for Interactive 3DTV

Client-Driven Selective Streaming of Multiview Video for Interactive 3DTV

Evaluating motion parallax and stereopsis as depth cues for autostereoscopic displays

Stereo display with time-multiplexed focal adjustment

Contact Info

Product

Resources

About