Zhenyu Wang

Zhenyu Wang
Peking University | PKU

Doctor of Theology

About

37
Publications
1,458
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155
Citations

Publications

Publications (37)
Chapter
The baseline profile of the third-generation Audio Video coding Standard (AVS3) was issued in March 2019, and achieves 23.52% BD-rate saving at the cost of doubled encoding time compared with AVS2, saves approximately 22% bitrate with over 7 times complexity compared with HEVC. uAVS3e works as the open source encoder for AVS3 baseline profile and h...
Article
Full-text available
The third generation of Audio Video coding Standard (AVS3) is an emerging video coding standard that surpasses High Efficiency Video Coding (HEVC). AVS3 allows flexible block subdivision by applying Quad-Tree (QT), Binary-Tree (BT) plus Extend Quad-Tree (EQT) partition structure, while the increased flexibility comes at the cost of enormous coding...
Chapter
Integrated photography display is a commonly used technology to provide users 3D videos with horizontal and vertical parallaxes. However, 3D video contents under natural scenes are very scarce and many existing methods can only provide parallaxes in one direction using binocular cameras. In this work, we set up an end-to-end real-time virtual view...
Chapter
The 3D panoramic video provides an immersive stereo visual experience by presenting 3D omnidirectional videos of real-world scenes. The key challenge is to develop an efficient representation of 3D panoramic video in order to maximize coding efficiency. In this paper, we propose an asymmetric representation based on the binocular suppression theory...
Chapter
In this paper, we present a parallax-robust hexahedral panoramic video stitching method. An efficient three-stage stitching procedure is proposed. In the preprocessing stage, layered feature points matching strategy extracts feature matches lying in different depth layers. In the rough alignment stage, based on the first layer of feature matches, g...
Article
The recently issued second generation IEEE 1857 video coding standard (AVS2) provides a doubling in coding efficiency relative to previous standards such as H.264/AVC and AVS1. The coding performance improvement is mainly due to the adoption of advanced coding tools. However, these coding tools also cause a dramatic increase in computational comple...
Article
The image-domain-warping (IDW) method can effectively create high-quality virtual views. However, the IDW algorithm is very complex, and the software implementation for this method is far from real-time. In this paper, we propose an IDW-based view synthesis acceleration method on GPGPU. Our method makes two main contributions. First, at the algorit...
Article
MPEG has produced standards that have provided the industry with the best video compression technologies. To address diverse Internet needs, MPEG issued a Call for Proposals (CfP) for Internet video coding in July, 2011. The anticipation is that any patent declaration associated with the Baseline Profile of this standard will indicate that the pate...
Conference Paper
Internet Video Coding (IVC) has been developed in MPEG by combining well-known existing technology elements and new coding tools with royalty-free declarations. In June 2015, IVC project was approved as ISO/IEC 14496-33 (MPEG- 4 Internet Video Coding). It is believed that this standard can be highly beneficial for video services in the Internet dom...
Article
The second generation of the audio video coding standard (AVS2), which is going to be issued as IEEE 1857.4, doubles the coding efficiency of AVS1 and H.264/AVC. However, the advanced techniques in AVS2 also dramatically increase the computational complexity. The research on a commercial encoder for AVS2 is still at an early stage. In this paper, w...
Article
Wavefront parallelism is effective for parallel video encoding thanks to its merits of low latency, no quality loss and high degree of parallelism. In traditional video encoders, macroblock row wavefront (MRW) parallelism was widely adopted. However the performance of MRW is limited by workload unbalance and computing resource unbalance among multi...
Article
Recent local stereo matching methods have achieved comparable performance with global methods. However, the final disparity map still contains significant outliers. In this article, the authors propose a local stereo matching method that employs a new combined cost approach and a secondary disparity refinement mechanism. They formulate combined cos...
Conference Paper
Recent cost-volume filtering-based local stereo methods have achieved comparable accuracy with global methods. However, there are still some significant outliers existing in the final disparity map. In this paper, we propose a cost-volume filtering-based local stereo matching method that employs a new combined cost and a novel secondary disparity r...
Conference Paper
Compared with H.264, the High Efficiency Video Coding standard has higher compression efficiency and better transmission performance, and will be used in wider field. TZ search method is adopted to perform integer pixel search in HEVC. Its performance is very perfect but very time-consuming. In this paper, we use hexagon search method in place of T...
Conference Paper
In this paper, we propose a hybrid parallel decoding strategy for HEVC which combines task-level parallelism and datalevel parallelism based on CTUs. The data-level parallelism makes the execution time distribution of different decoding stages more balanced, and makes the task-level parallelism more efficient. Our approach imposes no constraint on...
Article
In conventional motion compensation, prediction block is related only with one motion vector for P frame. Multihypothesis motion compensation (MHMC) is proposed to improve the prediction performance of conventional motion compensation. However, multiple motion vectors have to be searched and coded for MHMC. In this paper, we propose a new low-cost...
Conference Paper
MB-level parallelism is widely used in parallel video coding thanks to its merits of low latency, no performance loss and high degree of parallelism. Most of video encoders with MB-level parallelism employ MB Row Scheduling (MRS) scheme. In software video encoder, early terminate algorithms tend to cause significant difference in coding time of dif...
Conference Paper
HEVC (High Efficiency Video Coding) has recently been published as the next generation video coding standard. Compared with previous standards, the coding efficiency is greatly improved at the cost of much higher codec complexity. On the other hand, ARM with SIMD (Single Instruction Multiple Data) instructions is widely deployed on mobile platform,...
Conference Paper
Nowadays, mobile devices are capable of displaying video up to HD resolution. In this paper, we propose two acceleration strategies for Audio Video coding Standard (AVS) software decoder on multi-core ARM NEON platform. Firstly, data level parallelism is utilized to effectively use the SIMD capability of NEON and key modules are redesigned to make...
Conference Paper
With the development of hardware technologies, multi-core processor becomes more and more popular. At the same time, the performance of video encoding technologies is greatly improved at the cost of complexity. How to exploit the computing capacity of the multi-core processors efficiently to meet the demand of video encoding technology is a challen...
Conference Paper
The progresses on PC based 3D video display technology have made it feasible to provide 3D video streaming service over internet. Compared with 2D video streaming, 3D video streaming system demands more network bandwidth, computing power, and more complex transmission mechanism. There are rarely online 3D video services. In this paper, we describe...
Conference Paper
Full-text available
A Depth Template based 2D-to-3D Video Conversion and Coding system (DTVCC) is proposed by this paper. In DTVCC, triangle meshes are exploited to describe depth template for scenes in 2D video, an interactive system is designed to generate reliable depth template, depth map can be automatically reconstructed based on the depth template and 2D video...

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