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20th IEEE International Conference on Image Processing (ICIP)

作者： Lee, Jin Young Wey, Ho-Cheon Park, du-Sik Samsung Elect Co Ltd Daegu South Korea

ISBN: (纸本)9781479923410

In H. 264/AVC, motion vector prediction is only required to reduce temporal redundancy. In order to support inter-view motion vector prediction in multi-view video coding, the prediction process in H. 264/AVC is extended in inter-view direction. In general, the temporal and inter-view motion vector prediction uses motion vectors of neighboring blocks around a current block. However, current 3d video coding deals with a multi-view video plus depth (MVd) format, so motion vectors in texture images can be predicted from the corresponding depth images. In this paper, we introduce an improved depth-based motion vector prediction method for the efficient 3d video coding. Simulation results show that the proposed method obtains higher coding efficiency than the conventional method.

关键词： 3d video coding depth-based motion vector prediction inter-view prediction multi-view video plus depth (MVd) format

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AVS 3d video coding Technology and System

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ZTE Communications 2012年第2期10卷 13-18页

作者： Siwei Ma Shiqi Wang Wen Gao Institute of Digital Media Peking University Beijing 100871 China

Following the success of the audio video standard （AVS） for 2d video coding, in 2008, the China AVS workgroup started developing 3d video （3dV） coding techniques. In this paper, we discuss the background, technical features, and applications of AVS 3dV coding technology. We introduce two core techniques used in AVS 3dV coding： inter-view prediction and enhanced stereo packing coding. We elaborate on these techniques, which are used in the AVS real-time 3dV encoder. An application of the AVS 3dV coding system is presented to show the great practical value of this system. Simulation results show that the advanced techniques used in AVS 3dV coding provide remarkable coding gain compared with techniques used in a simulcast scheme.

关键词： AVS 3d video coding inter-view prediction stereo packing

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IMPROVEd dEPTH-BASEd MOTION VECTOR PREdICTION IN 3d video coding

IMPROVED DEPTH-BASED MOTION VECTOR PREDICTION IN 3D VIDEO CO...

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IEEE International Conference on Image Processing

作者： Jin Young Lee Ho-Cheon Wey du-Sik Park Samsung Electronics Co. Ltd.

ISBN: (纸本)9781479923427

In H.264/AVC, motion vector prediction is only required to reduce temporal redundancy. In order to support inter-view motion vector prediction in multi-view video coding, the prediction process in H.264/AVC is extended in inter-view direction. In general, the temporal and inter-view motion vector prediction uses motion vectors of neighboring blocks around a current block. However, current 3d video coding deals with a multi-view video plus depth (MVd) format, so motion vectors in texture images can be predicted from the corresponding depth images. In this paper, we introduce an improved depth-based motion vector prediction method for the efficient 3d video coding. Simulation results show that the proposed method obtains higher coding efficiency than the conventional method.

关键词： 3d video coding depth-based motion vector prediction inter-view prediction multi-view video plus depth (MVd) format

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UPSAMPLEd-VIEW dISTORTION OPTIMIZATION FOR MIXEd RESOLUTION 3d video coding

UPSAMPLED-VIEW DISTORTION OPTIMIZATION FOR MIXED RESOLUTION ...

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IEEE International Conference on Image Processing

作者： Michal Joachimiak Miska M. Hannuksela Payman Aflaki Moncef Gabbouj Department of Signal Processing Tampere University of Technology Nokia Research Center

ISBN: (纸本)9781479983407

The MVC+d extension of the Advanced video coding (H.264/AVC) standard enables multiview-and-depth 3d video coding but specifies that all views are coded at equal spatial resolution. In mixed resolution 3d video coding some of the views are coded at reduced resolution. This paper proposes an improvement for the mode decisions in depth encoding in the mixed resolution scenario. We modify the distortion calculation for rate-distortion optimized depth coding. The proposed solution optimizes the depth data compression with assumption that it will be used not only for view synthesis but also for depth-based super resolution in the post-processing stage. The algorithm is implemented on top of the mixed resolution 3d video encoder based on the 3dV-ATM reference software. Evaluation of the proposed solution, tested under the JCT-3V common test conditions, is done against the mixed resolution MVC+d coding with the view synthesis distortion enabled. The results show 2.64%dBR gain for coded views and 0.64% gain for synthesized views.

关键词： 3d video coding depth coding Mixed resolution Rate-distortion optimization Upsampled-view distortion video coding Rate distortion Resolving power View distortion videotapes super-resolution depth coding

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3d video: Acquisition, coding, and display

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IEEE TRANSACTIONS ON CONSUMER ELECTRONICS 2010年第2期56卷 946-950页

作者： Merkle, Philipp Mueller, Karsten Wiegand, Thomas Heinrich Hertz Inst Nachrichtentech Berlin GmbH Fraunhofer Inst Telecommun Image Proc Dept Image Comnmunicat Grp D-10587 Berlin Germany Tech Univ Berlin Dept Telecommun Syst Sch EE & CS D-10587 Berlin Germany

An overview of the 3d video processing chain is given, highlighting existing and upcoming technologies and standards, addressing dependencies and interactions between acquisition, coding and display, and pointing out ... 详细信息

关键词： 3d video coding 3d processing chain H.264 standard multiview video coding

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HEVC-based 3d holoscopic video coding using self-similarity compensated prediction

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SIGNAL PROCESSING-IMAGE COMMUNICATION 2016年 42卷 59-78页

作者： Conti, Caroline Soares, Luis ducla Nunes, Paulo Inst Univ Lisboa ISCTE IUL Inst Telecomunicacoes Lisbon Portugal

Holoscopic imaging, also known as integral, light field, and plenoptic imaging, is an appealing technology for glassless 3d video systems, which has recently emerged as a prospective candidate for future image and video applications, such as 3d television. However, to successfully introduce 3d holoscopic video applications into the market, adequate coding tools that can efficiently handle 3d holoscopic video are necessary. In this context, this paper discusses the requirements and challenges for 3d holoscopic video coding, and presents an efficient 3d holoscopic coding scheme based on High Efficiency video coding (HEVC). The proposed 3d holoscopic codec makes use of the self-similarity (SS) compensated prediction concept to efficiently explore the inherent correlation of the 3d holoscopic content in Intra- and Inter-coded frames, as well as a novel vector prediction scheme to take advantage of the peculiar characteristics of the SS prediction data. Extensive experiments were conducted, and have shown that the proposed solution is able to outperform HEVC as well as other coding solutions proposed in the literature. Moreover, a consistently better performance is also observed for a set of different quality metrics proposed in the literature for 3d holoscopic content, as well as for the visual quality of views synthesized from decompressed 3d holoscopic content. (C) 2016 Elsevier B.V. All rights reserved.

关键词： 3d holoscopic video Integral imaging Light field Plenoptic imaging 3d video coding HEVC

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SYNTHESIZEd dISPARITY VECTORS FOR 3d video coding

SYNTHESIZED DISPARITY VECTORS FOR 3D VIDEO CODING

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IEEE International Conference on Image Processing

作者： Yin Zhao Yichen Zhang Peng Lu Lu Yu Institute of Information and Communication Engineering Zhejiang University

ISBN: (纸本)9781479923427

In 3d video coding, some dependent-view coding tools may utilize derived disparity vectors (dV) to locate inter-view correspondences, such as the Backward block-based View Synthesis Prediction (BVSP) and depth-based Motion Vector Prediction (dMVP) in ATM. A typical way to derive a dV for a target block, as performed in ATM, is to convert reconstructed depth values associated with the block to a dV. However, this approach only works in depth-first coding order (dFCO) and becomes inapplicable when the dependent-view texture is coded prior to the depth, i.e., in texture-first coding order (TFCO). In this paper, a sparse dV field is synthesized from the depth map of a coded reference view to provide the dVs required by dependent-view coding tools in TFCO. The synthesized sparse dV field is accurate to support disparity-aided coding tools in different coding orders, while only introducing 2% decoding time increase. With the proposed method, BVSP and dMVP can be applied in both TFCO and dFCO, which mitigates the large coding performance gap (around 20% Bd rate) between TFCO and dFCO of ATM.

关键词： 3d video coding depth-based motion vector prediction disparity vector view synthesis prediction

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AdAPTIVE dEPTH EdGE SHARPENING FOR 3d video dEPTH coding

ADAPTIVE DEPTH EDGE SHARPENING FOR 3D VIDEO DEPTH CODING

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IEEE Visual Communications and Image Processing (VCIP)

作者： Zhang, Rong Chen, Ying Karczewicz, Marta Qualcomm Inc San Diego CA 92121 USA

ISBN: (纸本)9781467344050

In 3d video systems with Multiview video plus depth (MVd) representation, intermediate views can be rendered from transmitted texture views and corresponding depth maps by techniques such as depth Image Based Rendering (dIBR). Recent standardization activities in MPEG include the development for such MVd based 3dV codecs. One codec which is H.264/AVC based is called 3dV-ATM. Because of compression, reconstructed depth maps often have certain distortions, such as blurry depth edges, which can result in noticeable artifacts in the rendered views. In this paper, a method of adaptive depth edge sharpening is proposed for 3d video coding, based on the 3dV-ATM. The proposed adaptive depth edge filtering and smoothing along depth edge techniques adaptively sharpen blurry edges of the reconstructed depth frames caused by compression. Compared to the anchor software 3dV-ATM, the proposed method achieves about 7.2% bitrate reduction on average for the rendered view PSNRs versus overall bitrates with comparable runtime complexity.

关键词： depth coding depth edge filtering 3d video coding 3dV

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Standards-based approaches to 3d and multiview video coding

Standards-based approaches to 3D and multiview video coding

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Conference on Applications of digital Image Processing XXXII

作者： Sullivan, Gary J. Microsoft Corp Redmond WA 98052 USA

ISBN: (纸本)9780819477330

The extension of video applications to enable 3d perception, which typically is considered to include a stereo viewing experience, is emerging as a mass market phenomenon, as is evident from the recent prevalence of 3d major cinema title releases. For high quality 3d video to become a commonplace user experience beyond limited cinema distribution, adoption of an interoperable coded 3d digital video format will be needed. Stereo-view video can also be studied as a special case of the more general technologies of multiview and "free-viewpoint" video systems. The history of standardization work on this topic is actually richer than people may typically realize. The ISO/IEC Moving Picture Experts Group (MPEG), in particular, has been developing interoperability standards to specify various such coding schemes since the advent of digital video as we know it. More recently, the ITU-T Visual coding Experts Group (VCEG) has been involved as well in the Joint video Team (JVT) work on development of 3d features for H.264/14496-10 Advanced video coding, including Multiview video coding (MVC) extensions. This paper surveys the prior, ongoing, and anticipated future standardization efforts on this subject to provide an overview and historical perspective on feasible approaches to 3d and multiview video coding.

关键词： 3d video coding stereo video coding multiview video coding (MVC) MPEG VCEG JVT standardization interoperability

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Conference on Applications of digital Image Processing XXXVI

作者： Conti, Caroline Nunes, Paulo Soares, Luis ducla ISCTE Univ Inst Lisbon P-1649026 Lisbon Portugal

ISBN: (纸本)9780819497062

Holoscopic imaging, also known as integral imaging, has been recently attracting the attention of the research community, as a promising glassless 3d technology due to its ability to create a more realistic depth illusion than the current stereoscopic or multiview solutions. However, in order to gradually introduce this technology into the consumer market and to efficiently deliver 3d holoscopic content to end-users, backward compatibility with legacy displays is essential. Consequently, to enable 3d holoscopic content to be delivered and presented on legacy displays, a display scalable 3d holoscopic coding approach is required. Hence, this paper presents a display scalable architecture for 3d holoscopic video coding with a three-layer approach, where each layer represents a different level of display scalability: Layer 0 - a single 2d view;Layer 1 - 3d stereo or multiview;and Layer 2 - the full 3d holoscopic content. In this context, a prediction method is proposed, which combines inter-layer prediction, aiming to exploit the existing redundancy between the multiview and the 3d holoscopic layers, with self-similarity compensated prediction (previously proposed by the authors for non-scalable 3d holoscopic video coding), aiming to exploit the spatial redundancy inherent to the 3d holoscopic enhancement layer. Experimental results show that the proposed combined prediction can improve significantly the rate-distortion performance of scalable 3d holoscopic video coding with respect to the authors' previously proposed solutions, where only inter-layer or only self-similarity prediction is used.

关键词： display scalability HEVC integral imaging 3d holoscopic video coding 3d video coding

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