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3DTV-Conference on True Vision - Capture, Transmission and Display of 3D Video (3DTV-CON)

作者： Inoue, Tomohiko Fukushima, Norishige Ishibashi, Yutaka Nagoya Inst Technol Grad Sch Engn Showa Ku Nagoya Aichi 4668555 Japan

ISBN: (纸本)9781479947584

We show non-essentiality of using a correlation between an image and a depth map for depth-image-based rendering (DIBR), when we use an accurate depth map. For coding of DIBR, an edge preserving filter, which jointly use the image and the depth map, as a post filter is a suitable approach. The joint filter not only removes coding distortion, but also improves accuracy of the coded depth map itself. Considering the development 3D technology, the accuracy of the input depth map will be improved. If we use an accurate depth map, e.g. the ground truth, the accuracy improvement of the joint filter becomes little. To reveal the fact, we use various codecs (JPEG, JPEG2000, and H.264/AVC) and use two state-of-the-arts filters, which are the post filter set as the non-joint filter, and the weighed mode filter as the joint filter. Experimental results show that the post filters do not require the joint image, and self-sustained types of the non-joint filter have better performance.

关键词： depth map coding Post Filtering depth Image Based Rendering Free Viewpoint Image Synthesis

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depth map coding with Distortion Estimation of Rendered View

Depth Map Coding with Distortion Estimation of Rendered View

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Conference on Visual Information Processing and Communication

作者： Kim, Woo-Shik Ortega, Antonio Lai, PoLin Tian, Dong Gomila, Cristina Univ Southern Calif Inst Signal & Image Proc Los Angeles CA 90089 USA Thomson Corp Res Princeton NJ 08540 USA

ISBN: (纸本)9780819479365

New data formats that include both video and the corresponding depth maps, such as multiview plus depth (MVD), enable new video applications in which intermediate video views (virtual views) can be generated using the transmitted/stored video views (reference views) and the corresponding depth maps as inputs. We propose a depth map coding method based on a new distortion measurement by deriving relationships between distortions in coded depth map and rendered view. In our experiments we use a codec based on H.264/AVC tools, where the rate-distortion (RD) optimization for depth encoding makes use of the new distortion metric. Our experimental results show the efficiency of the proposed method, with coding gains of up to 1.6 dB in interpolated frame quality as compared to encoding the depth maps using the same coding tools but applying RD optimization based on conventional distortion metrics.

关键词： depth map coding DIBR 3-D video coding rate-distortion optimization distortion analysis

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H.264-based depth map-sequence coding algorithm using mode mapping for fast 3-D video compression

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OPTICAL ENGINEERING 2011年第1期50卷 017401-017401页

作者： Pan, Ling-Jiao Lee, Byung-Tak Kim, Nac-Woo Elect & Telecommun Res Inst Opt Commun Res Ctr Kwangju 500480 South Korea

An H.264-based fast 3-D video compression algorithm is presented by reducing coding complexity of P slices in a depth map sequence using a fast-mode decision scheme. On the basis of the relationship of coding modes of collocated macroblocks on texture and depth frames, an early SKIP-mode decision scheme and a selective prediction-mode decision scheme have been developed to rapidly encode depth map sequences. Experimental results show that the algorithm can save the entire encoding time by 79% on average compared to conventional a depth map sequence coding algorithm, while introducing only negligible loss in peak signal-to-noise ratio value. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3533026]

关键词： 3-DTV H.264 depth map coding

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Efficient depth intraprediction method for H.264/AVC-based three-dimensional video coding

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OPTICAL ENGINEERING 2015年第4期54卷 1-10页

作者： Oh, Kwan-Jung Oh, Byung Tae Elect & Telecommun Res Inst Broadcasting & Telecommun Media Res Lab Taejon 305700 South Korea Korea Aerosp Univ Sch Elect Telecommun & Comp Engn Goyang 412791 South Korea

We present an intracoding method that is applicable to depth map coding in multiview plus depth systems. Our approach combines skip prediction and plane segmentation-based prediction. The proposed depth intraskip prediction uses the estimated direction at both the encoder and decoder, and does not need to encode residual data. Our plane segmentation-based intraprediction divides the current block into biregions, and applies a different prediction scheme for each segmented region. This method avoids incorrect estimations across different regions, resulting in higher prediction accuracy. Simulation results demonstrate that the proposed scheme is superior to H.264/advanced video coding intraprediction and has the ability to improve the subjective rendering quality. (C) 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)

关键词： three-dimensional video coding multiview plus depth depth map coding depth intraprediction AVC-based three-dimensional video coding

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Object Boundary-Based Synthesized View Distortion Estimation 10

Object Boundary-Based Synthesized View Distortion Estimation

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10th IEEE Conference on Industrial Electronics and Applications

作者： Kim, Miok Ling, Nam Santa Clara Univ Dept Comp Engn Santa Clara CA 95053 USA

ISBN: (纸本)9781479983896

In this paper, we propose an object boundary based view synthesis distortion estimation (VSDE) for depth map coding to improve virtual synthesized view quality. The proposed method estimates depth map distortion related to an energy minimization in such a way that additional sharp edge information of depth maps involves in VSDE. It aims at reducing visual artifacts of synthesized views along sharp edge areas while maintaining coding efficiency of depth map coding. As a result, it improves the depth coding performance slightly and reduces rendering distortions around the object boundaries. Experimental results show that the proposed method shows improved subjective visual quality while reducing coding redundancy.

关键词： Video coding visual communications 3D video codec depth map coding multi-view video plus depth (MVD) format visual quality

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Object Boundary-Based Synthesized View Distortion Estimation

Object Boundary-Based Synthesized View Distortion Estimation

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Conference on Industrial Electronics and Applications

作者： Miok Kim Nam Ling Department of Computer Engineering Santa Clara University Santa Clara California 95053 USA

ISBN: (纸本)9781479984671

关键词： Video coding visual communications 3D video codec depth map coding multi-view video plus depth (MVD) format and visual quality

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Fast depth map intra prediction algorithm based on edge detection and CU partition

Fast depth map intra prediction algorithm based on edge dete...

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11th International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM 2015)

作者： Zhenyong Wang Lifeng Mo Dezhi Li Ting Xu School of Electronics and Information Engineering Harbin Institute of Technology China

ISBN: (纸本)9781510821279

This paper proposed a new fast intra prediction algorithm based on fast edge detection and CU partition for depth map to reduce the coding complexity of Multiview Video Plus depth (MVD) coding in HEVC. The latest video coding standard HEVC greatly improves the coding complexity of intra prediction because of complex coding unit (CU) partition and lots of prediction modes. depth maps always have smooth regions separated by sharp edges. Smooth regions can help to speed up the CU partition and reduce the time of intra mode decision, and sharp edges must be protected to ensure the quality of synthetic viewpoints. In the new algorithm, an equation and a threshold T are used to detect whether there are edges in current CU. To different kinds of CU, different intra mode decision methods are taken. After simulation, the experimental results show that the proposed algorithm significantly reduces the coding times, while maintaining high bitrate and PSNR performance in comparison with original HEVC algorithm.

关键词： CU Partition depth map coding Edge Detection Intra Prediction Mode Decision Edge detection Copper encoding complexity Prediction algorithms partitions

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View Synthesis Distortion Estimation for AVC- and HEVC-Compatible 3-D Video coding

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IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY 2014年第6期24卷 1006-1015页

作者： Oh, Byung Tae Oh, Kwan-Jung Korea Aerosp Univ Sch Elect Telecommun & Comp Engn Goyang 412791 South Korea Elect & Telecommun Res Inst Broadcasting & Telecommun Media Res Lab Taejon 305700 South Korea

This paper presents an efficient view synthesis distortion estimation method for 3-D video. It also introduces the application of this method to Advanced Video coding (AVC)- and High Efficiency Video coding (HEVC)-compatible 3-D video coding. Although the proposed view synthesis distortion scheme is generic, its use for actual 3-D video codec systems addresses the many issues caused by different video-coding formats and restrictions. The solutions for these issues are herein proposed. The simulation results show that the proposed scheme can achieve approximately 5.4% and 10.2% coding gains for AVC- and HEVC-compatible 3-D coding, respectively. In addition, the results show the remarkable complexity reduction of the scheme compared to the view synthesis optimization method currently used in 3-D-HEVC. The proposed method has been adopted into the presently developing AVC- and HEVC-compatible test model reference software.

关键词： 3-D Advanced Video coding (AVC) 3-D High Efficiency Video coding (HEVC) 3-D video (3-DV) codec depth map coding multiview coding view synthesis distortion view synthesis distortion estimation

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Motion Estimation for depth maps coding Based on Rendered View Distortion 4

Motion Estimation for Depth Maps Coding Based on Rendered Vi...

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International Conference on Audio, Language and Image Processing

作者： Shi, Zhiru Shi, Yunyu Zhang, Xiaoyun Gao, Zhiyong Shanghai Jiao Tong Univ Inst Image Commun & Informat Proc Shanghai Peoples R China

ISBN: (纸本)9781479939039

Incolour plus depth map 3D video, depth map is a luminance image that aids the virtual views generation. Since it is not the final image viewed by end user, the conventional depth map compression method, which minimizes the pixel errors of the depth map, introduces more distortions to the virtual rendered images. In this paper, a novel motion estimation scheme for depth map coding is proposed. By employing rendered view distortion in Rate-Distortion Optimization, the optimal Motion Vector is determined to improve the rendered views quality. An effective Lagrange multiplier is also derived. Experimental results illustrate that 34%-63% of bit can be saved comparing to the conventional motion estimation method.

关键词： 3D Video coding DIBR depth map coding Rendered View Distortion Motion Estimation

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An Efficient Distortion Model Configuration for depth coding in 3D-HEVC

An Efficient Distortion Model Configuration for Depth Coding...

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IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)

作者： Li, Chenyang Jin, Xin Dai, Qionghai Tsinghua Univ Grad Sch Shenzhen Shenzhen Key Lab Broadband Network & Multimedia Shenzhen 518055 Peoples R China

ISBN: (纸本)9781479952304

3D-HEVC is the latest 3D video project of MPEG for 3D video coding. To compress the depth videos in 3D-HEVC efficiently, depth distortion models considering the distortions in synthesized views have been introduced. However, these models introduce a big burden in coding complexity. In this paper, a configuration of depth distortion models applied at each encoding decision stage of 3D-HEVC is proposed based on a comprehensive analysis of typical depth distortion models and different configurations of representative models. It provides better trade-off between compression efficiency and coding complexity for depth map coding. An average of 12.6% reduction in time complexity is achieved without compression efficiency loss.

关键词： depth map coding rate-distortion optimization view synthesis 3D-HEVC

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