Low bit rate JPEG compressed images usually demonstrate serious blocking effects.
低比特率JPEG压缩图象往往产生严重的方块效应。
A modified low bit rate sinusoidal transform coding algorithm (STC) is presented.
提出了低码率正弦变换编码算法(STC)的改进算法。
This paper proposed a pitch quantization method for low bit-rate speech coding systems.
本文提出了一种适用于低速率语音编码系统的基音周期量化算法。
A fast block matching motion estimation algorithm for low bit rate video coding is proposed.
提出一个用于低比特率视频编码的快速块匹配运动估计算法。
Results show that the proposed scheme outperforms the standard DCT, especially at very low bit rates.
结果表明，提出的方案优于DCT标准，特别是在非常低码率的情况下。
This paper presents a video coding technique that achieves high visual quality at very low bit rates.
提出了一种在非常低比特率情况下具有高质量的图像编码技术——特征头像集编码方案。
MPEG-4defines a complete set of FDP and FAP in order to encode the facial object with a low bit-rate.
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。
The finished encoder can compress high resolution video in real time, with low bit rate and high image quality.
实验结果表明该编码器可实现高分辨率视频的实时编码，且具有较低的码率和较好的图像质量。
At low bit rates, the block Discrete Cosine Transform (BDCT) compression methods often give rise to blocking artifacts.
低比特率时，基于块离散余弦变换(BDCT)的图像压缩方法常常会引起块效应。
In low bit rate application or high definition player system such as digital cinema, coding artifacts will be very annoying.
在低码率或超高清晰度视频特别是数字电影应用中，压缩噪声会影响观看质量。
Therefore what has been studied should be a promotion to make very low bit rate video coding work in practice and in wide use.
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。
High quality, low bit rate image compression method is one of the key technologies to develop downhole video logging instrument.
高清晰度，低比特率的图像压缩技术是研究井下电视的关键技术之一。
The Low-Delay Code-Exited Linear Predictive (LD-CELP) Speech Coder can combine high quality with low delay at quite low bit rates.
低时延码激励线性预测(LD - CELP)语音编码能够在较低速率把高质量与低时延结合起来。
A kind of robust pitch estimation algorithm is presented for parametric speech coding with transparent quality at very low bit rate.
为了实现甚低码率下的透明质量语音编码，提出了一种基音周期估计算法。
Block artifact is one of major causations which reduce the quality of pictures in video coding, especially at the time of low bit rate.
块效应是视频编码中影响编码质量的一个重要问题，特别在低码率情况下尤为明显。
This paper has introduced one low bit-rate, low cost, low loss wireless network standard of bright future in home network application, IEEE 802.
通过介绍一种在家庭网络应用中极有前景的低速率、低代价、低功耗无线网络标准——IEEE 802。
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.
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。
An optimized update operator in lifting implementation is proposed to improve scalability under low bit rate and the quality of reconstructed video.
提出了更新算子的优化设计，以提高低码率下视频编码的可扩展性，并取得改善的重建视频质量。
Code-Excited Linear Predictive (CELP) coding can provide natural speech quality at medium and low bit rates in contrast with conventional LPC vocoder.
码激励线性预测（CELP）编码在中低速率上与传统的LPC声码器相比可以提供更加自然的语音质量。
The potential application of this technique includes low bit-rate video transmission, computer aided instruction, game design, virtual reality and so on.
其潜在的应用领域包括窄带视频传输、计算机辅助教学、游戏制作、虚拟现实等等。
An error resilience scheme for very low bit rate speech coding was developed for speech communications on narrow band channels with high bit error rates.
为满足在高误码率的窄带信道上进行语音通信的需求，研究了一种适用于甚低速率语音通信的抗误码参数估值算法。
In this paper, developments of speech compression coding are briefly introduced, and importance is attached to recent advances in speech coding at low bit rates.
本文简要介绍了语音压缩编码的新进展，并且着重介绍低码率语音编码在新近几年所取得的进展。
In order to solve the problem of integrality authentication for low bit-rate video, a novel video authentication schema based on the fragile watermark is proposed.
为了解决低码率视频完整性认证问题，提出了一种基于脆弱水印的视频认证方案。
Most of the bit-rate control schemes in video-compression standards are designed for medium and high bit - rate conditions, while do not work well for low bit-rate.
在大多数视频压缩标准中，码率控制方法都是针对中高码率情况而设计的，而在较低码率情况下的工作情况都不够理想。
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.
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。
As one of the current most potential low bit rate speech coding schemes, waveform interpolation model with its high performance has been paid more and more attention.
波形内插语音编码模型作为当今最具潜力的低速率语音编码方案之一，因其良好的性能，越来越受到人们的重视。
In perceptual audio coding with low bit rate application, the pre-echo artifact is more distinct, and the effective detection of transient signals is the precondition.
在低比特率音频感觉编码中，预回声失真更为突出，而对其处理的前提是瞬态信号的有效检测。
The experiment results show that the new still image compression scheme provides higher perceptual quality and less encoding time than EZW, especially at low bit rates.
实验结果表明，该算法具有较好的图像复原质量和较快的编码速度，整体性能明显优于EZW方案（特别是低比特率下）。
Algorithms and new research results in very low bit rate speech coding is presented thoroughly in this paper, and conclusions are given through comparison and analysis.
全面论述了极低速率语音编码算法中运用的方法理论及最新的研究成果，并对这些算法进行了比较和分析，得出结论。
Since the model based coding being presented from early 80's, it has got extensive attention as a video coding method due to high subject image quality and low bit rates.
模型基图像编码自80年代初提出后，由于在低码率情况下有高的主观图像质量，作为视频编码的方法得到了广泛的重视。
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