然后对预测误差进行量化，以进一步降低编码率。
Then prediction errors were quantized properly to reduce coding rate further.
许多配置不同的编码率的前向纠错方案都可以选用。
A number of FEC schemes are available with different coding rates.
该方案可以充分利用所分配的有限计算资源优化编码率失真性能。
The solution can fully use the limited computing resources to achieve optimal rate-distortion performance.
在给定的编码率的条件下，用率失真算法计算图像编码使之达到最小的失真。
Under the given distortion conditions, the still image coding Rate-Distortion theories discuss the max coding bit-rate.
采用可变扩展序号支持XML文档更新，可有效降低XML文档的二次编码率。
In addition, the variable expanded order was adopted to support the XML update, which can effectively reduce the secondary XML coding rate.
连续可变斜率增量调制的语音编码可以在高误码率的情况下正常工作。
CVSD (Continuous Variable Slope Delta Modulation) voice coding enables.
具体的转换方式有三种：码率转换、分辨率转换、编码制式的转换。
Videotranscoding has three means: code rate conversion, resolution conversion, conversion between coding standard.
帧间预测是视频压缩的关键技术之一，能有效消除视频编码中的时间冗余，降低编码码率，提高编码效率。
Interframe prediction is key to video compression and can effectively eliminate the time redundancy of video coding, reduce coding rate and enhance coding efficiency.
信源编码通过压缩编码来去掉信号源中的冗余成分，以达到压缩码率，提高通信的效率，实现信号有效传输的目的。
The source coding through compression to remove the source redundancies, achieves the compression bitrate, improve communication efficiency, achieve the purpose of effective transmission signal.
实验结果显示在低码率下，该算法能够大大节约编码的码字，而且在小运动序列时，可以显著减少编码的时间。
Experimental results show that the algorithm can save more bits at low bit-rates and greatly reduce the encoding time when small motion video sequences are encoded.
为提高实时视频编码的图像质量，提出了一种低复杂度单通道视频编码的可变码率(VBR)控制算法。
To improve the image quality of real time video encoder, a low complexity variant bit rate (VBR) control algorithm for single-pass video encoding was proposed.
提出了低码率正弦变换编码算法(STC)的改进算法。
A modified low bit rate sinusoidal transform coding algorithm (STC) is presented.
试验表明，该算法支持编码规范中各种码率，具备高比特率输入信号的编码能力，且所需资源少，有较高的性价比。
The test indicates that the algorithm supports various code rates in coding criterion, has coding ability of inputting signal with high bit rate, needs less resources and has good cost effectiveness.
基于表情活动单元的人脸模型自动适配是极低码率可视电话模型基编码所必需的。
The automatic adaptation of a face model using action units is necessary for the model based coding of videophone sequences at very low bit rates.
此判别法表明，相邻编码帧宏块条码率的频域互相关能够有效反映图像活动性变化的特点。
The correlation of adjacent slices bitrates in frequency domain can effectively reflect the activity of the motion pictures.
4通过脸部定义参数FDP和脸部运动参数FAP来对人脸对象进行编码，从而获得码率极低的视频流。
MPEG-4defines a complete set of FDP and FAP in order to encode the facial object with a low bit-rate.
在视频编码中，码率控制的目的是：在满足带宽约束的条件下，提高编码图像的质量。
In video coding, the purpose of rate control is to improve picture quality while subject to the bandwidth constraint.
综合高频编码的码率取决于图中有效边沿的含量。
The bit rate of synthetic high coding is determined by the content of relevant edge of a picture.
最后对不同编码方法在不同信道环境下做了误码率性能的比较分析。
At last, the code error rate performances in different coding method and different channel environment are analyzed and compared.
近年来。在低码率的音频编码算法中也开始应用它。
Recently, it began to be applied in low - bit rate audio coding.
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.
该文根据信源编码压缩比、信道码率及信道特征对渐进图像传输失真的影响，提出一种基于最小图像失真的动态码率分配策略。
A dynamic rate allocation method is presented which is based on the compression rate of image source coder, channel rate, channel characters and their influence on the distortion of progressive image.
模拟结果表明，此项缓存控制技术不仅能准确预测编码码率，而且能自适应视频的场景变化，使解码图像质量比较均匀。
Simulation result shows that the buffer control strategy can not only predict the video coder's output correctly, but also adapt the scene changes in video, get similar decoded image quality.
每个数据块随后根据与用于该数据块的数据率相关联的(各)码率被编码。
Each data block is then encoded in accordance with the code rate (s) associated with the data rate for that data block.
该算法解决标准中原算法码率分配过于平均和不能充分利用已编码帧历史信息的问题。
The method resolves problems in the standard method when the bit allocation is too uniform and the encoded frame history information is omitted.
首先，本文介绍码率控制算法的应用环境——各种视频编码协议。
Firstly, we introduce the video coding standard where the rate control algorithm is used.
相信所做的这些工作对甚低码率视频图像编码的实际应用和推广将起到推动作用。
Therefore what has been studied should be a promotion to make very low bit rate video coding work in practice and in wide use.
要解决这些问题就需要研究编码器的码率控制。
For the problem solving, the thesis study rate control of the video encoder.
要解决这些问题就需要研究编码器的码率控制。
For the problem solving, the thesis study rate control of the video encoder.
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