Rate control scheme for base layer in scalable video coding 基于可分級編碼基本層的碼率控制方法
So scalable video coding ( svc ) is presented . recently, it has been researched intensively and has got noteworthy achievement 于是可伸縮性視頻編碼(svc)便應運而生,并且成為近幾年視頻編碼領域的研究熱點,取得了顯著的研究成果。
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,由于視頻的信息量大,且internet又是盡力型網(wǎng)絡,因此internet上的視頻通信也是一個研究難點。
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 本文首先建立了一個有向無環(huán)圖模型,該模型能夠描述可擴展視頻編碼碼流中各子碼流和子碼流間復雜的依賴關系。
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 隨著用于圖像壓縮的ezw、spiht和ebcot模型及用于視頻壓縮的3d-ezw、3d-spiht和3d-escot模型的出現(xiàn),基于小波變換的嵌入編碼已成為圖像視頻壓縮研究的主流。
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 本文分析了超大規(guī)模vod應用對可擴展視頻服務器的需求,在現(xiàn)有多節(jié)點服務器和虛擬服務器結構的基礎上,提出了可擴展的虛擬視頻服務器體系結構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,針對精細粒度可擴展視頻編碼技術,本文擴展有向無環(huán)圖模型,在該模型中加入碼率,原始失真和自適應因子等屬性,建立了自適應率失真模型。
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 好的轉換編碼算法不僅要滿足擁塞速率控制的要求,而且要使分層視頻組播流中的增強層數(shù)據(jù)以率失真優(yōu)化的方式進行截斷,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中精細分層編碼的視頻通信系統(tǒng)框架,該框架有機地集成了精細分層的視頻編解碼、視頻傳輸中的擁塞控制和差錯控制等技術。
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中精細分層編碼的視頻通信系統(tǒng)框架,該框架有機地集成了精細分層的視頻編解碼、視頻傳輸中的擁塞控制和差錯控制等技術。