一些混合视频编码标准都是基于运动补偿预测的。
Some hybrid video coding standards are based on motion compensated prediction.
摘要：H . 264是新一代视频编码标准，具有广泛的应用前景。
Abstract: H. 264 is the newest video coding standard, and it will be widely used.
在传统的基于混合编码技术的视频编码标准中，变换是不可或缺的一部分。
Transform plays an essential role in conventional video coding standards based on hybrid coding technology.
实现一个视频传输系统时，视频编码标准一般采用JPEG、MPEG、H。
When building a video transfer system, coding standard, such as JPEG, MPEG, H.
新一代视频编码标准h . 264有多个技术亮点，但是计算的复杂度大大提高了。
A new generation of video coding standard H. 264 adopts a number of bright spots in technology. However, the computing complexity has greatly increased.
作为对视频转换编码及码率控制研究的基础，本文首先介绍了几种主要的视频编码标准。
As the basis of the following research on transcoding and rate control, several related video coding standards are introduced in this thesis first.
文章详细介绍了常用的视频编码技术，并对当前的一些视频编码标准作了较详细的介绍。
In this paper, video encoding techniques in common use and the major standards of video encoding are presented in detail.
采用基于内容的MPEG - 4视频编码标准进行压缩，得到较高的压缩比和压缩质量。
It utilized MPEG-4, one of video coding standard based on content, to encode the video stream, which can result in higher encoding rate and better encoding quality.
基于H。 263视频编码标准，提出了一种新的采用二级筛选机制的场景自适应编码方案。
Based on analyzing H. 263 recommendation, a new scene adaptive video coding scheme which used two layer filter mechanism was proposed.
为了满足视频服务的多种不同需求，各种标准化组织为不同的视频业务提供了相应的视频编码标准。
In order to satisfy all the needs of various video services, different standardization organizations have put forward many video coding standards.
视频编码通过运动估计消除时间冗余信息，块匹配方法是目前所有视频编码标准采用的运动估计方法。
The time redundancy in video sequences can be eliminated by motion estimation. Block matching is a popular motion estimation method, adopted by all video codec standards.
由于以前的图像和视频编码标准采用DCT编码，在变换域嵌入水印大多使用分块或整体DCT技术。
Since the traditional coding technology for image and video is using of DCT, the blocked and whole DCT technology in frequency domain was used in order to embed watermarking.
绪论部分简要介绍了视频压缩编码的基本方法，基于块匹配的混合编码框架的构成以及主要视频编码标准的特点。
The Introduction briefly presents the basic methods of video coding, the structure of block-based hybrid coding frame and the chief characteristics of video coding standards.
绪论部分简要介绍了视频编码的原理，对当前主流的视频编码标准以及几个主要的多媒体dsp系列进行了概述。
The Introduction briefly presents the principle of video coding and gives an overview of the main video coding standards and DSP series.
一些研究的实验数据表明，H . 264在信噪比，压缩效率和视觉效果方面，都远远好于现有的其它视频编码标准。
Some studies of the experimental data show that, H. 264 is much better than the other existing video coding standard in the SNR, compression efficiency and visual effects.
而MPEG - 4出台的新专利许可政策被认为过于苛刻无法接受，诸多此类原因都迫切需要一种新的视频编码标准出台。
And the new patent licensing policy introduced by MPEG-4 is considered to be too harsh and unacceptable. Many such reasons urgently need a new audio video coding standard to be introduced.
本论文是研究的对象是以低码率视频编码技术(基于H . 263)为目标的视频编码标准，目的是为了能大大提高视频质量。
The purpose of this thesis is to study about the video-coding standard targeted for low-bit-rate video coding technique (H. 263) that improves video quality considerably.
在MPEG -4视频编码标准中，为了实现基于视频内容的交互功能，其视频序列的每一帧由视频对象面(VOP)来表示。
In order to support content based functions in the visual standard of MPEG 4, each frame of video sequences should be represented in terms of video object planes (VOP's).
基于分块dct变换的编码方法，由于具有良好的去相关性和能量压缩特性，已经成为现有大多数图像和视频编码标准的核心技术。
The Method based on the DCT transformation has been the center technology for most of the digital image and video coding standards, since it features on good de-correlation and energy compression.
运动估计算法种类繁多，其中基于块匹配的运动估计算法由于方法简单，估计效果好，易于实现，已被许多国际视频编码标准所采用。
There are several motion estimation algorithms. However, the method based on block matching is widely used because of its simple way to implement and good effect of estimation.
实验结果表明：该算法能够较好地从视频序列中分割运动前景和背景，比较适合于在基于内容的视频编码标准MPEG - 4中使用。
Experiment results show that the algorithm can preferably segment moving foreground and background in video sequence and it fits for MPEG-4coding standard, which is content-based.
该文介绍了LTMMS多媒体监控系统的构成；在比较了几种视频编码标准之后，说明了LTMMS多媒体监控系统中图像编码标准的选择和实。
After the comparison between several video code standards, the selection and realization of picture coding standard in LTMMS multimedia surveillance system is introduced.
视频运动对象的自动分割是实现新一代对象基视频编码标准MPEG - 4的重要技术，本文提出了一种基于帧内图像分区的运动对象自动分割算法。
Automatic segmentation of moving objects in video sequences is a significant technology for implementing emerging object-based video coding standard MPEG-4.
基于块匹配的运动估计由于其简单易实现性而被当前的所有视频编码国际标准所采用。
Block matching motion estimation is relatively simple and can be easily realized, and is adopted by current international video coding standards.
目前，数字视频领域普遍采用运动图像专家组(MPEG)制定的MPEG - 2编码标准。
At present, the MPEG-2 coding standard set down by Moving Pictures Expert Group is adopted largely in digital video field.
由于多个标准组织的支持和本身技术的显著优势，视频编码国际标准h . 264得到了广泛的推广和应用。
The international video coding standards H. 264 has been greatly popularized and applied in the case of the support of several standard organizations and its own advanced technology.
首先就人类视觉系统及其特性和视频编码中的主要误差及误差衡量的主客观标准进行了简介。
First, human visual system and its characteristics are introduced together with the main artifacts in video coding and the subjective and objective standards to measure those artifacts.
本论文研究了MPEG - 4标准，在实现MPEG - 4视频编解码器软件原型的基础上，重点研究了编码过程中的两项关键技术：运动估计和码率控制。
This paper research the MPEG-4 standard and realize the software prototype of the MPEG-4 video codec. The paper emphasize two key techniques in MPEG-4 encoder: Motion Estimation and Bit Rate Control.
介绍了三种新的国际编码标准，并根据目前视频压缩技术的研究现状，指出了视频压缩技术的发展趋势。
The paper introduces three kinds of new international code standard about video contraction, and puts forward the present situation and trends of video contraction technology.
介绍了三种新的国际编码标准，并根据目前视频压缩技术的研究现状，指出了视频压缩技术的发展趋势。
The paper introduces three kinds of new international code standard about video contraction, and puts forward the present situation and trends of video contraction technology.
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