scholarly journals Quality Scalability Compression on Single-Loop Solution in HEVC

2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Mengmeng Zhang ◽  
Hongyun Lu ◽  
Zhi Liu
Keyword(s):  
Video Coding ◽  
High Efficiency ◽  
Scalable Video Coding ◽  
Experimental Results ◽  
Scalable Video ◽  
Rate Reduction ◽  
High Efficiency Video Coding ◽  
Single Loop ◽  
Rate Decrease ◽  
Significant Rate

This paper proposes a quality scalable extension design for the upcoming high efficiency video coding (HEVC) standard. In the proposed design, the single-loop decoder solution is extended into the proposed scalable scenario. A novel interlayer intra/interprediction is added to reduce the amount of bits representation by exploiting the correlation between coding layers. The experimental results indicate that the average Bjøntegaard delta rate decrease of 20.50% can be gained compared with the simulcast encoding. The proposed technique achieved 47.98% Bjøntegaard delta rate reduction compared with the scalable video coding extension of the H.264/AVC. Consequently, significant rate savings confirm that the proposed method achieves better performance.

scholarly journals Efficient and Low Complexity Surveillance Video Compression using Distributed Scalable Video Coding

2018 ◽  
Vol 34 (1) ◽  
Author(s):  
Le Dao Thi Hue ◽  
Luong Pham Van ◽  
Duong Dinh Trieu ◽  
Xiem HoangVan
Keyword(s):  
Video Coding ◽  
Video Compression ◽  
Video Surveillance ◽  
High Efficiency ◽  
Scalable Video Coding ◽  
Low Complexity ◽  
Video Data ◽  
Base Layer ◽  
Scalable Video ◽  
Surveillance Video

Video surveillance has been playing an important role in public safety and privacy protection in recent years thanks to its capability of providing the activity monitoring and content analyzing. However, the data associated with long hours surveillance video is huge, making it less attractive to practical applications. In this paper, we propose a low complexity, yet efficient scalable video coding solution for video surveillance system. The proposed surveillance video compression scheme is able to provide the quality scalability feature by following a layered coding structure that consists of one or several enhancement layers on the top of a base layer. In addition, to maintain the backward compatibility with the current video coding standards, the state-of-the-art video coding standard, i.e., High Efficiency Video Coding (HEVC), is employed in the proposed coding solution to compress the base layer. To satisfy the low complexity requirement of the encoder for the video surveillance systems, the distributed coding concept is employed at the enhancement layers. Experiments conducted for a rich set of surveillance video data shown that the proposed surveillance - distributed scalable video coding (S-DSVC) solution significantly outperforms relevant video coding benchmarks, notably the SHVC standard and the HEVC-simulcasting while requiring much lower computational complexity at the encoder which is essential for practical video surveillance applications.

scholarly journals Adaptive Quantization Parameter Estimation for HEVC Based Surveillance Scalable Video Coding

Electronics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 915
Author(s):  
Xiem HoangVan
Keyword(s):  
Video Coding ◽  
High Efficiency ◽  
Scalable Video Coding ◽  
Rate Distortion ◽  
Traffic Monitoring ◽  
Visual Surveillance ◽  
Scalable Video ◽  
Surveillance Systems ◽  
Quantization Parameter

Visual surveillance systems have been playing a vital role in human modern life with a large number of applications, ranging from remote home management, public security to traffic monitoring. The recent High Efficiency Video Coding (HEVC) scalable extension, namely SHVC, provides not only the compression efficiency but also the adaptive streaming capability. However, SHVC is originally designed for videos captured from generic scenes rather than from visual surveillance systems. In this paper, we propose a novel HEVC based surveillance scalable video coding (SSVC) framework. First, to achieve high quality inter prediction, we propose a long-term reference coding method, which adaptively exploits the temporal correlation among frames in surveillance video. Second, to optimize the SSVC compression performance, we design a quantization parameter adaptation mechanism in which the relationship between SSVC rate-distortion (RD) performance and the quantization parameter is statistically modeled by a fourth-order polynomial function. Afterwards, an appropriate quantization parameter is derived for frames at long-term reference position. Experiments conducted for a common set of surveillance videos have shown that the proposed SSVC significantly outperforms the relevant SHVC standard, notably by around 6.9% and 12.6% bitrate saving for the low delay (LD) and random access (RA) coding configurations, respectively while still providing a similar perceptual decoded frame quality.

scholarly journals Interlayer Simplified Depth Coding for Quality Scalability on 3D High Efficiency Video Coding

2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Mengmeng Zhang ◽  
Hongyun Lu ◽  
Huihui Bai
Keyword(s):  
Video Coding ◽  
High Efficiency ◽  
Prediction Method ◽  
3D Video ◽  
Experimental Results ◽  
Base Layer ◽  
Prediction Tool ◽  
High Efficiency Video Coding ◽  
Depth Maps ◽  
Depth Coding

A quality scalable extension design is proposed for the upcoming 3D video on the emerging standard for High Efficiency Video Coding (HEVC). A novel interlayer simplified depth coding (SDC) prediction tool is added to reduce the amount of bits for depth maps representation by exploiting the correlation between coding layers. To further improve the coding performance, the coded prediction quadtree and texture data from corresponding SDC-coded blocks in the base layer can be used in interlayer simplified depth coding. In the proposed design, the multiloop decoder solution is also extended into the proposed scalable scenario for texture views and depth maps, and will be achieved by the interlayer texture prediction method. The experimental results indicate that the average Bjøntegaard Delta bitrate decrease of 54.4% can be gained in interlayer simplified depth coding prediction tool on multiloop decoder solution compared with simulcast. Consequently, significant rate savings confirm that the proposed method achieves better performance.

scholarly journals The Influence of Coding Tools on Immersive Video Coding

2021 ◽  
Author(s):  
Jakub Szekiełda ◽  
Adrian Dziembowski ◽  
Dawid Mieloch
Keyword(s):  
Video Coding ◽  
Video Compression ◽  
High Efficiency ◽  
Video Codec ◽  
Experimental Results ◽  
High Efficiency Video Coding ◽  
Video Encoder ◽  
Typical Configuration

This paper summarizes the research on the influence of HEVC (High Efficiency Video Coding) configuration on immersive video coding. The research was focused on the newest MPEG standard for immersive video compression – MIV (MPEG Immersive Video). The MIV standard is used as a preprocessing step before the typical video compression thus is agnostic to the video codec. Uncommon characteristics of videos produced by MIV causes, that the typical configuration of the video encoder (optimized for compression of natural sequences) is not optimal for such content. The experimental results prove, that the performance of video compression for immersive video can be significantly increased when selected coding tools are being used.

scholarly journals Performance Evaluation of Concurrent Multipath Video Streaming in Multihomed Mobile Networks

2013 ◽  
Vol 2013 ◽  
pp. 1-20 ◽  
Author(s):  
James Nightingale ◽  
Qi Wang ◽  
Christos Grecos
Keyword(s):  
Video Coding ◽  
Video Streaming ◽  
Mobile Networks ◽  
High Efficiency ◽  
Packet Scheduling ◽  
Scalable Video Coding ◽  
Valuable Insight ◽  
High Efficiency Video Coding ◽  
Multiple Paths ◽  
Multipath Streaming

High-quality real-time video streaming to users in mobile networks is challenging due to the dynamically changing nature of the network paths, particularly the limited bandwidth and varying end-to-end delay. In this paper, we empirically investigate the performance of multipath streaming in the context of multihomed mobile networks. Existing schemes that make use of the aggregated bandwidth of multiple paths can overcome bandwidth limitations on a single path but suffer an efficiency penalty caused by retransmission of lost packets in reliable transport schemes or path switching overheads in unreliable transport schemes. This work focuses on the evaluation of schemes to permit concurrent use of multiple paths to deliver video streams. A comprehensive streaming framework for concurrent multipath video streaming is proposed and experimentally evaluated, using current state-of-the-art H.264 Scalable Video Coding (H.264/SVC) and the next generation High Efficiency Video Coding (HEVC) standards. It provides a valuable insight into the benefit of using such schemes in conjunction with encoder specific packet prioritisation mechanisms for quality-aware packet scheduling and scalable streaming. The remaining obstacles to deployment of concurrent multipath schemes are identified, and the challenges in realising HEVC based concurrent multipath streaming are highlighted.

scholarly journals Extended cross-component prediction in HEVC

2017 ◽  
Vol 6 ◽  
Author(s):  
Mischa Siekmann ◽  
Ali Khairat ◽  
Tung Nguyen ◽  
Detlev Marpe ◽  
Thomas Wiegand
Keyword(s):  
Performance Analysis ◽  
Video Coding ◽  
High Efficiency ◽  
Experimental Results ◽  
High Efficiency Video Coding ◽  
Compression Efficiency ◽  
Model Parameter ◽  
Different Color ◽  
Color Components ◽  
A Performance

With Version 2 of the high-efficiency video coding standard, a new compression efficiency tool targeting redundancies among color components is specified for all 4:4:4 profiles, and referred to as cross-component prediction (CCP). This paper describes and analyses two additional extensions to the specified CCP variant. In the first extension, an additional predictor is introduced. Particularly, beside the luma component, also the first chroma component can serve as a reference for prediction of the second chroma component. The second extension proposes a method for predicting the CCP model parameter from the statistics of already reconstructed neighboring blocks. A performance analysis of coding RGB content in different color representations is given in comparison with CCP and both extensions. Experimental results show that the proposed extensions can improve the compression efficiency effectively compared with CCP, when applied in the YCbCr domain.

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