3D display dependent quality evaluation and rate allocation using scalable video coding

Saygılı, Görkem; Gurler, C. Goktug; Tekalp, A.M.

doi:10.1109/icip.2009.5414317

Cited by 17 publications

(24 citation statements)

References 6 publications

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“…For perceived quality measure of stereo videos, although PSNR is a quality metric that is frequently used and widely adopted for conventional 2D video, simple averaging of the two PSNR values from two views without considering the characteristics of HVS can cause misleading results. In [17], Saygili et al proposed an effective quality metric based on the conclusion from subjective test that when PSNR of both views are close to each other, the higher PSNR reflects the perceived visual quality better. The metric is shown below,…”

Section: B Adaptive Inter-view Rate Allocationmentioning

confidence: 99%

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Joint Rate Allocation of Stereoscopic 3D Videos in Next-Generation Broadcast Applications

Yao

Chau

Rahardja

2013

IEEE Trans. on Broadcast.

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3D video is foreseen to be the next natural step in the evolution of digital media. Among various representation formats available for 3D videos, stereoscopic is considered the most mature technology so far. This paper proposes a joint rate allocation scheme for next-generation broadcast applications, in which multiple stereoscopic 3D videos are encoded and transmitted simultaneously. We first propose a scalable stereoscopic video coding scheme that inherits features from scalable video coding. The scalable format makes the rate control of each video as easy as bit-stream extraction. For the two views in stereo videos, the reference view is independently coded to provide backward compatibility, while the auxiliary view is coded using the reference view as a base layer to remove inter-view redundancy. Based on the well-known fact that the human visual system can compensate and conceal the degraded fidelity in one of the two views, provided the other view is encoded at a high quality, the proposed joint rate allocation scheme does adaptive bit allocation between views to obtain high compression efficiency and better quality. Experimental results show that the proposed framework achieves smaller quality fluctuation among videos and higher perceived quality in each video as compared with the existing system. Index Terms-Asymmetric coding, joint rate allocation, scalable stereo video coding, scalable video coding, stereoscopic 3D video.

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Section: B Adaptive Inter-view Rate Allocationmentioning

confidence: 99%

“…α is a threshold to evaluate whether the PNSR from two views are close to each other, and it was proposed to be 0.85 in [17]. β is a weighting parameter that depends on the display technology and spatial resolution of the degraded view.…”

Section: B Adaptive Inter-view Rate Allocationmentioning

confidence: 99%

Joint Rate Allocation of Stereoscopic 3D Videos in Next-Generation Broadcast Applications

Yao

Chau

Rahardja

2013

IEEE Trans. on Broadcast.

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“…The theory can be exploited in stereo video encoding to reach the best stereo rate-visual distortion (RD) performance. This is performed by asymmetric coding, which is the reduction of the spatial and/or quantization resolution of the auxiliary view, while the reference view is kept in full or higher resolution [7][8][9][10][11][12][13][14]. The objective of asymmetric coding is to maximize the perceived 3D video quality subject to an overall bitrate constraint by efficient stereo rate scaling.…”

Section: Introductionmentioning

confidence: 99%

“…In [12], asymmetric rate scaling using scalable video coding was evaluated on 2 different types of 3D display technologies: polarized projection and parallax barrier. The experimental results showed that users with full spatial resolution 3D displays, like polarized projection, should prefer SNR scalability, while users with half-resolution 3D displays, such as parallax barrier, should favor the spatially scaled stream.…”

Section: Introductionmentioning

confidence: 99%

Perceptual quality evaluation of asymmetric stereo video coding for efficient 3D rate scaling

Ozbek¹,

Ertan²,

Karakuş³

2014

Turk J Elec Eng & Comp Sci

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Abstract:In 3D perception, the binocular suppression of the human vision, perceiving high quality 3D video in the case of a view in higher quality, can be exploited in asymmetric stereo video coding for efficient 3D rate scaling. Hence, the best stereo rate-visual distortion performance may be gained by asymmetric coding, which is the reduction of the spatial and/or quantization resolution of the low-quality view, while keeping the high-quality view in full resolution.However, how to determine the level of asymmetry and what type of scaling should be chosen are still in question. In this work, we try to assess the overall performance of the scalability options with several test contents. The test videos are encoded at critical bitrates with symmetric options and spatial or signal-to-noise ratio (SNR) asymmetric coding, and are subjectively evaluated in a stereo-polarized projection 3D display system. Two different types of evaluation methodologies are used: the Double-Stimulus Continuous-Quality Scale (DSCQS) and Subjective Evaluation of Stereo Video Quality (SESVIQ). Dense visual tests show that the spatial scaling is generally inferior when compared to SNR scaling, except that high motion scenes and symmetric SNR are more preferable for a higher bitrate. The characteristics of the video content should be taken into consideration for efficient stereo rate scaling.

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“…In [13] the 3D sensation, visualization conditions and the search of sweet spot are treated comparing 2D and 3D configurations. In [27] the video coding is treated for measuring the quality established by the users. In [32] the visualization of landscape architecture in auto-stereoscopic devices is studied, comparing 2D and 3D images.…”

Section: Introductionmentioning

confidence: 99%

Synthetic content generation for auto-stereoscopic displays

Gonzalez

Sotoca

Pla

et al. 2013

Multimed Tools Appl

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Due to the appearance of auto-stereoscopic visualization as one of the most emerging tendencies used in displays, new content generation techniques for this kind of visualization are required. In this paper we present a study for the generation of multi-view synthetic content, studying several camera setups (planar, cylindrical and hyperbolic) and their configurations. We discuss the different effects obtained varying the parameters of these setups. A study with several users was made to analyze visual perceptions, asking them for their optimal visualization. To create the virtual content, a multiview system has been integrated in a powerful game engine, which allows us to use the latest graphics hardware advances. This integration is detailed and several demos and videos are attached with this paper, which represent a virtual world for auto-stereoscopic displays and the same scenario in a two-view anaglyph representation for being visualized in any conventional display. In all these demos, the parameters studied can be modified offering the possibility of easily appreciate their effects in a virtual scene.

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3D display dependent quality evaluation and rate allocation using scalable video coding

Cited by 17 publications

References 6 publications

Joint Rate Allocation of Stereoscopic 3D Videos in Next-Generation Broadcast Applications

Joint Rate Allocation of Stereoscopic 3D Videos in Next-Generation Broadcast Applications

Perceptual quality evaluation of asymmetric stereo video coding for efficient 3D rate scaling

Synthetic content generation for auto-stereoscopic displays

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