视频编码新标准——H.264

本文介绍了由ITU－T的VCEG和ISO／IEC的MPEG联合制定的视频编码新标准－－H.264，重点描述了H.264中所采用的视频编码新技术。     

新一代视频压缩标准H.264/AVC

H．264是国际上最新的视频编解码标准，其编码效率可比现有MPEG-4提高50％，是未来几年内视频编码技术研究的主要方向。本文简述了H.264的发展历程，列出其具有的新技术特征和基本原理结构框图，针对主要技术、新标准的技术优势进行描述。     

视频编码H.264/AVC新技术及其优化

本文详细介绍了视频编码新标准H.264/AVC中的运动估计和运动补偿、预测、证书变换、量化、熵编码环路滤波、帧切换等技术及其优化设计.     

视频编码新技术12题第一讲视频压缩编码

本文首先介绍了经典视频编码的国际新标准H.264/AVC中采用的主要新技术,然后以3D-DCT为例,介绍了结合二维平面空间和时间维形成的三维视频编码技术,最后介绍了编码效率非常高、但实现难度也很大的新一类基于内容的编码方法模型基视频编码。     

数字电视视频编码技术的研究

数字电视作为当前电视发展的方向在学术界和工业界引起了广泛的关注,而作为数字电视信息载体中的关键技术,视频编码技术也成为发展的核心。介绍了期望于应用在数字电视领域的视频编码技术的演进,以及H.264这一当前最新标准的技术原理和特点。     

H.264视频编码新标准及性能分析

重点介绍了视频编码新标准H.264/MPEG4-10 AVC的关键技术，并用该标准与H.262,H.263,MPEG-4等标准在性能上进行了分析比较。     

新一代视频编码标准H．264／AVC的关键技术研究

H.264/AVC是继H.263之后的新一代视频编码新标准,它采用了大量的新技术,适合各种媒体的传输和存储,可以面向交互式和非交互式应用.这里主要介绍了它的关键技术,通过仿真实验研究了H.264/AVC的优越性.实验结果表明,H.264/AVC在改善编码性能和提高编码效率以及传输鲁棒性方面与现有的任何标准相比,在同样保真度的条件下,可节省码率50%以上.     

视频编码新标准H.264中抗误码技术的研究

介绍了视频编码新标准--H.264中采用的几种抗误码技术,基于这些技术,新标准确保了压缩视频流在接收端的恢复质量.     

视频编码新标准H.264中抗误码技术的研究

介绍了视频编码新标准--H.264中采用的几种抗误码技术,基于这些技术,新标准确保了压缩视频流在接收端的恢复质量.     

H.264可分级编码技术介绍

H.264标准以其高效的编解码技术,为视频编码的发展带来了革命性的变化。近年来,随着视频业务的增多,相关的分级编码技术不断发展。为了适应需求,H.264标准也增加了可分级编码的扩展部分。本文首先简要回顾了H.264标准的相关概念,然后对H.264标准的时域、空域和质量可分级编码作了介绍和分析。最后揭示了各种分级编码技术的特点。     

新一代运动图像压缩标准H.264/AVC

H.264/AVC是ISO/IECMPEG与ITU-TVCEG共同制订的新一代图像编码标准,它具有更高的压缩性能。文章介绍H.264/AVC图像编解码系统的实现过程,并对其采用的新技术进行描述。     

视频压缩标准的最新进展

视频压缩是多媒体应用系统中一个十分重要的组成部分。阐述现今普遍采用的基于块的运动补偿和变换编码混合视频编码技术，对该系统中的每个部分进行了描述。分析ISO和ITU两大国际标准组织最新联合发布的H．264／AVC视频压缩标准，指出该视频压缩方式同以往的标准存在的显著不同，并就压缩性能同以往的标准进行对比。     

Introduction to the High-Efficiency Video Coding Standard

The high-efficiency video coding(HEVC) standard is the newest video coding standard currently under joint development by ITU-T Video Coding Experts Group(VCEG) and ISO/IEC Moving Picture Experts Group(MPEG).HEVC is the next-generation video coding standard after H.264/AVC.The goals of the HEVC standardization effort are to double the video coding efficiency of existing H.264/AVC while supporting all the recognized potential applications,such as,video telephony,storage,broadcast,streaming,especially for large picture size video(4k × 2k).The HEVC standard will be completed as an ISO/IEC and ITU-T standard in January 2013.In February 2012,the HEVC standardization process reached its committee draft(CD) stage.The ever-improving HEVC standard has demonstrated a significant gain in coding efficiency in rate-distortion efficiency relative to the existing H.264/AVC.This paper provides an overview of the technical features of HEVC close to HEVC CD stage,covering high-level structure,coding units,prediction units,transform units,spatial signal transformation and PCM representation,intra-picture prediction,inter-picture prediction,entropy coding and in-loop filtering.The HEVC coding efficiency performances comparing with H.264/AVC are also provided.     

Video coding with H.264/AVC: tools, performance, and complexity

H.264/AVC, the result of the collaboration between the ISO/IEC Moving Picture Experts Group and the ITU-T Video Coding Experts Group, is the latest standard for video coding. The goals of this standardization effort were enhanced compression efficiency, network friendly video representation for interactive (video telephony) and non-interactive applications (broadcast, streaming, storage, video on demand). H.264/AVC provides gains in compression efficiency of up to 50% over a wide range of bit rates and video resolutions compared to previous standards. Compared to previous standards, the decoder complexity is about four times that of MPEG-2 and two times that of MPEG-4 Visual Simple Profile. This paper provides an overview of the new tools, features and complexity of H.264/AVC.     

Overview of the MVC + D 3D video coding standard

3D video services are emerging in various application domains including cinema, TV broadcasting, Blu-ray discs, streaming and smartphones. A majority of the 3D video content in market is still based on stereo video, which is typically coded with the multiview video coding (MVC) extension of the Advanced Video Coding (H.264/AVC) standard or as frame-compatible stereoscopic video. However, the 3D video technologies face challenges as well as opportunities to support more demanding application scenarios, such as immersive 3D telepresence with numerous views and 3D perception adaptation for heterogeneous 3D devices and/or user preferences. The Multiview Video plus Depth (MVD) format enables depth-image-based rendering (DIBR) of additional viewpoints in the decoding side and hence helps in such advanced application scenarios. This paper reviews the MVC + D standard, which specifies an MVC-compatible MVD coding format.     

H.264/AVC视频编码标准的技术特点及应用分析

H.264／AVC是ITU-T视频编码专家组和ISO／IEC运动图像专家组(MPEG)共同开发出来的最新视频编码标准,它具备许多新的技术特点,如:多模式运动预测、柔性宏块排序、整数变换、一致性变字长编码、内容自适应二进制算术编码、分层编码、错误约束机制、错误掩盖技术及高效的比特流切换技术等等。本文在阐述该标准系统层结构的基础上,分析其主要技术特点及H.264／AVC VBR码流特性,阐述该标准在IP网络及无线网络中的应用情况。     

AVS中的音视频编码压缩技术

介绍了音视频编码标准AVS中的主要技术特点,对AVS标准所采用的主要技术进行了综述,给出了AVS视频标准与MPEG-4 AVC/H.264编码器性能的比较和分析,讨论了AVS的发展前景.     

Hardware solution for implementing the entire inverse IDCTs in HEVC decoder

Video compression performance of High Efficiency Video Coding (HEVC) is about twice of H.264/AVC video compression standard. The improvement in coding efficiency in HEVC is achieved by considerable increase in the computational load compared to H.264/AVC which is substantially very computational intensive. One of the units in HEVC which has changed considerably compared to H.264/AVC is Integer Discrete Cosine Transform (IDCT) unit. IDCT in HEVC standard includes 32 × 32, 16 × 16, 8 × 8 and 4 × 4 transforms. In this paper, a hardware solution for implementing the entire inverse IDCTs in HEVC decoder is proposed. The proposed hardware has a resource-sharing pipelined architecture. As a result, the hardware resources and computation time for implementing inverse IDCTs in HEVC decoder are reduced. Synthesis results by using NanGate OpenPDK 45 nm library indicate that the proposed hardware can achieve 222 MHz clock rate and can achieve real-time decoding of 4096 × 3072 video sequences with 70 fps.     

新标准H.264的核心技术与应用前景

围绕视频传输要求高效、可靠和网络友好的三个焦点问题,深入研究H.264标准编码层压缩性能的提升、网络适配层的无缝集成和编/解码器的容错性能;以基于包交换的IP视频信息包为例,重点分析H.264对因特网RTP/UDP/IP协议的映射过程;阐述H.264在视频移动通信、视频流服务、数字电视广播与存储领域的典型应用特点;指出H.264对视频源压缩、信道有效利用、缓解视频传输瓶颈的影响和发展前景.     

基于H.264的远程视频监控系统的设计与实现

采用高性能的H.264视频编码标准,设计开发了一套远程视频监控系统,实现了视音频实时编码同步,及1～24路视频图像的压缩、显示、存储、回放、网络监控等功能.并对该系统进行了分析和测试.