Rate control scheme for base layer in scalable video coding 基于可分级编码基本层的码率控制方法
So scalable video coding ( svc ) is presented . recently, it has been researched intensively and has got noteworthy achievement 于是可伸缩性视频编码(svc)便应运而生,并且成为近几年视频编码领域的研究热点,取得了显著的研究成果。
This thesis has focused on the key technologies of video transmission system, including fine granular scalable video coding, congestion control and error control technology 然而,由于视频的信息量大,且internet又是尽力型网络,因此internet上的视频通信也是一个研究难点。
A file format is proposed based on the generic model and iso base media file format . we first create a directed acyclic graph model to describe the substreams and relationships among those substreams in a scalable video stream 本文首先建立了一个有向无环图模型,该模型能够描述可扩展视频编码码流中各子码流和子码流间复杂的依赖关系。
Due to its multiresolution, time / frequency localization and lower time complexity, wavelet is suitable for scalable video coding, which has been applied to coding algorithms such as ezw, spiht and ebcot 随着用于图像压缩的ezw、spiht和ebcot模型及用于视频压缩的3d-ezw、3d-spiht和3d-escot模型的出现,基于小波变换的嵌入编码已成为图像视频压缩研究的主流。
Based on the analysis of the vls-vod requirements and two existing architectures, multi-node video server and virtual server, we present a scalable video server architecture, named as vvs, for virtual video server 本文分析了超大规模vod应用对可扩展视频服务器的需求,在现有多节点服务器和虚拟服务器结构的基础上,提出了可扩展的虚拟视频服务器体系结构vvs。
Second, an adaptive rate-distortion model is proposed by extending directed acyclic graph model for fine granular scalable video coding . we add rate, original distortion and adaptive scale to the directed acyclic graph model 其次,针对精细粒度可扩展视频编码技术,本文扩展有向无环图模型,在该模型中加入码率,原始失真和自适应因子等属性,建立了自适应率失真模型。
scalable video transcoding is the core of halvm . an ideal transcoding scheme can not only meet the requirement for congestion control, but also optimize truncating bits of enhancement layers according to rate-distortion theory for maximizing receiving utility 好的转换编码算法不仅要满足拥塞速率控制的要求,而且要使分层视频组播流中的增强层数据以率失真优化的方式进行截断,以提高接收者的接收效能。
The detailed fine granular scalable video coding technology and several improvements are presented . in the third part, a communication framework for fine granular scalable video stream is proposed . this framework has integrated video coding, decoding, congestion control and error control mechanism for video transmission 本文提出了internet中精细分层编码的视频通信系统框架,该框架有机地集成了精细分层的视频编解码、视频传输中的拥塞控制和差错控制等技术。
The detailed fine granular scalable video coding technology and several improvements are presented . in the third part, a communication framework for fine granular scalable video stream is proposed . this framework has integrated video coding, decoding, congestion control and error control mechanism for video transmission 本文提出了internet中精细分层编码的视频通信系统框架,该框架有机地集成了精细分层的视频编解码、视频传输中的拥塞控制和差错控制等技术。