帧内编码

面向IP网，本文分析了传统的基于帧内编码（Intra）帧周期刷新机制的性能，针对其编码效率低的缺点，提出了基于敏感度和反馈信息刷新的两种新方法。

The traditional mechanism of periodic Intra frame update over IP network is discussed in this paper . Two novel methods are proposed based on Intra frame update with sensitive degree and feedback .

实验结果表明，与H.263帧内编码方法相比，基于变换域的分布式视频编码系统的编码效率明显提高，恢复视频的主客观质量均有所改善。

The experimental results show that compared with H.263 intra coding , the coding efficiency is significantly improved and the reconstruction quality is obviously enhanced .

文中全面比较了DTM+MD的帧内编码方法和JPEG方法的性能，表明采用DTM+MD作帧内编码具有更好的主客观质量。

The performance of DTM + MD and JPEG has been compared and the former has a better subjective and objective quality when using as intra-frame coding .

介绍了MPEG视频编码标准，着重叙述了MPEG－1和MPEG－2视频编码的关键技术帧内编码和帧间编码。

In this article , we provide an overview of MPEG video-coding standards and mainly discuss the key techniques of MPEG-1 and MPEG-2 video coding-intraframe coding and interframe coding .

利用MPEG-2标准的压缩及视频流的特点，讨论了基于DCT变换帧内编码的水印嵌入方法，并提出一种改进的算法。

Making use of the features of MPEG-2 compression and stream of video frequency , this paper analyzes digital watermarking of intra-frame coding based on DCT and brings forward an improved algorithm .

一种基于信源划分定理的小波帧内编码方法

A wavelet intra-frame coding algorithm based on information source partition theorem

投影方法用于网络机器人图像帧内编码

Projection Technique Used for Intra-frame Coding in Internet-based Teleoperation System

基于混合预测模式的新型帧内编码算法

An Intra-frame Coding Algorithm Based on Mixed Prediction mode

对帧内编码原理做了介绍。

This paper introduces the principle of intraframe coding .

基于4：2：2视频帧内编码的扩展

Extension of Intra Coding Based on 4:2:2 Video

帧内编码原理

The Principle of Intraframe Coding

该编码算法采用帧内编码和帧间编码相结合的方法对序列图像进行压缩编码。

This coding algorithm can compress video by the method of combining inter-frame compression and intra-frame compression .

为了减少帧内编码时间和编码延迟，该文提出了一种能够快速实现帧内预测编码的新算法。

To overcome this drawback , a novel fast intra prediction algorithm is proposed in this paper .

基于帧内编码地理信息视频系统是一个结合了地理信息系统和视频系统的综合应用系统。

Geographic information video system based on Frame intra-coded is a combined system which contained GIS and Video System .

文中介绍了支持4∶2∶2的视频帧内编码的扩展方法。在H。

In this paper , the extension of intra coding to support 4 ∶ 2 ∶ 2 is introduced .

第四：提出了一种新颖的可应用于因特网视频通信的差错控制方法，称为自适应帧内编码刷新。

Forth , a novel error control method for Internet video communication is proposed , named adaptive intra update .

同时针对其帧内编码本身存在的不足提出一种更为高效且易于实现的帧内预测优化算法。

At the same time frame coding forits inherent shortcomings , a more efficient and easy to implement intra-prediction optimization .

在这种模式中，上方像素块中的四个底部像素被垂直拷贝至经过帧内编码的宏块中。

In this mode , four bottom pixels from the block above are copied vertically into part of an intra-coded macroblock .

分布式视频编码是一种新兴的视频编码方案，编码端使用帧内编码降低编码复杂度，解码端使用帧间译码发掘编码帧和关键帧之间的冗余信息。

Distributed video coding is a new type video coding scheme , using intra-frame coding to reduce encode complexity and using inter-frame coding in decoding .

实验结果表明该降分辨率帧内编码模式能够对高清视频序列的帧内编码提高约4%压缩效率。

This down-sampling intra coding mode can improve the compression efficiency ( approximate 4 % bitrate saving ) of intra coding for high defination video sequences .

根据该模型和视频编码器的编码方式推导了突发性出错引起的帧内编码和帧间编码的信道失真。

Based on this model and the coding modes of the video encoder , the channel distortion of inter-coding and intra-coding due to burst error is deduced .

主观试验表明，与其它帧内编码方式比较，建立在轮廓预测基础上的自适应预测器对分辨率测试卡的预测有明显改善。

Subjective tests show that the adaptive predictor based on contour prediction improves considerably the prediction of resolution charts in comparison with the other intraframe coding schemes .

本文提出一种基于空域和频域的混合型转码器框架，该框架对帧内编码宏块采用频域模型来提高转码速度，对帧间编码宏块采用像素域模型来保证转码质量，防止漂移误差。

The proposed scheme adopts frequency domain scheme to increase transcoding speed of intra macroblock , and spatial domain scheme to ensure transcoding quality of inter macroblock .

解码端采用了差错隐藏技术，主要包括帧内编码中的像素距离加权平均算法和帧间编码中的根据预测运动向量进行运动补偿。

And the error concealment techniques include weighted pixel averaging algorithm based on INTRA frame coding and motion compensation using predicted motion vectors based on INTER frame coding .

利用图像投影原理和机器人运动学方程，能够快速实现机器人部分视频对象分割，从而满足帧内编码改进算法的要求。

The algorithm can quickly implement macroblock partition by a projection technique and the robot kinematical theory , which leads to satisfying the requirement of enhanced intra-frame coding algorithm .

在视频压缩的过程中，实现了帧内编码与帧间编码两种编码方式，运用了预测编码、运动估计、运动补偿等技术。

During the video encoding process , there are two coding types , which are Intra-frame and Inter-frame , using the methods of motion prediction , estimation and compensation .

对不同的视频序列测试的结果表明，使用本算法后帧内编码时间可以减少70%左右，同时保持相近的图像压缩质量和码率水平。

To variable video sequences , the simulation results show that with the proposed algorithm the time of the intra coding can be reduce about 70 % while keep the equivalent precision .

本文结合实验结果，深入讨论了三角形网格基活动图像编码方法的基本框架和帧内编码问题。

In this paper the Delaunay triangular mesh ( DTM ) and regular triangular mesh ( RTM ) model-based video coding schemes are discussed including their basic framework and intra-frame coding , with the experimental results been illustrated .

对三种自适应DPCM帧内图象编码的讨论

Discussions with Three Schemes of Adaptive DPCM Intraframe Picture Coding

本文给出一种新的利用前场预测均方误差的帧内ADPCM编码方法，该方法根据五幅典型图象，给出三种预测器，五种量化器的设计参数。

This paper proposes a new method of interframe ADPCM Coding based on MSEP of last field , which gives design parameters of three predictors and five quantizers by five typical image .