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Low Bit Rate Data 低比特率数据
In order to get better decoded image quality at low bit rate, the distribution rules of sparse decomposition data are studied. 通过对分解结果数据分布规律进行分析，提出了量化和编码的方案，期望在低比特率情况下，得到较好的解码图像质量。
Tzung-ruen Yeh Many lossy image compression algorithms have been developed for low bit rate applications. 人们已经发展出许多适用于低位元率应用的破坏性影像压缩演算法。
X.25 provides a low bit rate shared variable capacity that may be either switched or permanent. X.;25提供了既可交换又可持续的低速率来分享变动的容量。
Robust speaker verification in low bit rate channels The influence of speech coding on text-independent speaker verification was studied. 研究了多种低速率信道环境下,语音编码对与文本无关说话人确认的影响。
A biorthogonal wavelet transform (BWT) and fuzzy vector quantization (FVQ)based very low bit rate image coding algorithm is proposed. 摘要该文提出了一种基于双正交小波变换(BWT)和模糊矢量量化(FVQ)的极低比特率图像编码算法。
For low bit rate video communication, the codec priority of Region of Interest (ROI) can improve the subjective image quality. 摘要在低码率视频通信中，感兴趣区(ROI)优先编码策略有助于图像主观质量的提高。
A biorthogonal wavelet transform (BWT) and fuzzy vector quantization (FVQ) based very low bit rate image coding algorithm is proposed. 该文提出了一种基于双正交小波变换(BWT)和模糊矢量量化(FVQ)的极低比特率图像编码算法.
The Philip resolution chart, which is used to examine quality of studio facilities, can not be coded at low bit rate with a good quality be-cause of the high edge content. 用于考核演播室设备质量的菲利浦分辨率测试卡,因为边沿含量高,按上述码率编码时不能获得满意的图象质量。
Due to the limited bandwidth and abominable communication environment, researching in the low bit rate video compression encoding is become special important. 但是由于有限的带宽和恶劣的通信环境,对极低码率视频编码技术的研究变得尤为重要。
Deblock filter, therefore, improves the quality of video transmission in the low bit rate wireless channel.The research results show that the method has useful practice value. 去块滤波器的使用，提高了在低码率的情况下图像传输的主观质量，获得了较为满意的结果，具有一定的实用价值。
Abstract： In this paper, a new hybrid wavelet video coding algorithm combined with H.263 and SLCCA for very low bit rate videophone application has been proposed. 摘要：针对极低比特率应用提出一种新的结合H.;263与SLCCA的混合小波视频编码算法。
This paper describes a particular scheme of a low bit rate image encoding method using DPCM, in wh-ich the hit rate decreases from 8 bit/pel to 1.75 bit/pel. 本文介绍了一种低码率DPCM图象编码的具体方案;使每象元由8比特压缩成平均1.;75比特。
Experiment results show that in low bit rate environment, the new image compression scheme performs better than JPEG in the aspects of perception and PSNR (Peak Signal Noise Ratio). 实验结果表明该算法在低码率下，相比JPEG，获得了在视觉效果和峰值信噪比方面更好的恢复图像质量。
Standard Couple image is decomposed and reconstructed with EZW and SPIHT at low bit rates. 编制程序分别采用EZW和SPIHT算法，在低码率下对标准Couple图像进行了编码和重构。
The final 5.15? kbit/s low bit rate wideband coder can enhance the trueness of speech,the discriminability of consonants and the recognizability of the speaker. The coding result is close to that of AMR-WB 6.6? 宽带语音的高、低频分别由特征波形内插编码和频带扩展算法恢复;由此形成了5.;15 kbit/s的低速率宽带语音编码器;增强了语音真实感、辅音的辨析度及对话者的识别度;宽带语音编码质量接近AMR-WB的6
Since the traditional H 261/3 and MPEG 1/2 standards employ the block based compression algorithm,decoded images are suffered from severely blocky artifacts and mosquito effects at low bit rate. 在传统的H.;261/3以及MPEG-1/2标准中是采用基于块的压缩算法;可在低比特率运用时;会出现严重的块状效应及蚊式噪声。
Work on another MPEG initiative for very low bit rate coding of audio-visual programs started in September 1993 at ISO/IEC JTC1.It is scheduled to achieve CD status in 1995 or 1996. MPEG工作组的另一项计划是开发甚低位率的音频视频编码方法，这项工作开始于1993年9月，在1995到1996年间形成草案。
Its simplicity and potential for relatively good performance for low bit rates makes quadtree a desirable choice for a compression scheme. 四分树分解具有简单和在低位元率时相对较佳的表现的潜力，使之成为在低位元率的影像压缩演算法?，值得探讨的一员。
DMB uses the latest and most efficient audio coding standards of MPEG-4 AAC/BSAC, which can provide high quality audio at very low bit rates. 在DMB中采用了MPEG-4 AAC/BSAC音频编码技术，代表了当今最先进的音频编码技术，可以在较低的码率下提供高品质的声音效果。