Experimental results indicate that comparing to exhaustive search, the proposed method improves the coding speed and compression ratio greatly with slight quality degradation of decoded image.
实验结果表明，相对于全局搜索，所提方法大幅地提高了编码速度和压缩比，而解码质量只略有下降。
In order to improve the ratio of binary image compression, using top-dowm method of coding, bring forward a fractal image compression method based on isosceles right triangle, and simulated.
为了提高二值图像的压缩比，采用自顶向下的编码方法，提出一种基于等腰直角三角形的分形图像压缩算法，并进行仿真实验。
Experimental results show that the coding speed is much enhanced while high compression ratio and well-reconstructed image can be obtained.
实验结果表明，该方法大大提高了编码速度，而且能获得高压缩比和满意的恢复图象质量。
The experiment shows that the embedded zerotree coding method can be used in the case of nonseparable wavelet transform and has good PSNR at low compression ratio.
实验表明嵌入式零材编码方法可以用在非分离型二维子波变换情况，在低比特率时有很好的巅值信噪比PSNR。
Experimental results indicate that the proposed algorithm effectively saves the coding time and improves the compression ratio without reducing the video quality.
实验结果表明，在保证压缩质量不下降的前提下，该算法可以有效节约编码时间，同时压缩比也得以改善。
Experimental results show that the improved hybrid image coding can improve the PSNR of the rebuilded image at the same compression ratio.
经试验证明，这是一种有效的编码方法，在相同压缩比率下提高了重建图像的峰值信噪比PSNR。
According to space time block coding based transmitting antenna diversity (STTD) in the WCDMA system, this paper presents a reception scheme based on maximal ratio combining (MRC).
针对WCDMA下行链路空时编码发送分集(STTD)确定了基于最大比合并(mrc)的分集接收方案，并对其进行了性能分析。
A system model of image sequence coding based on wavelet transform is established. Then a high data compression ratio is realized and satisfactorily reconstructed image can be obtained.
建立了基于小波变换的运动图像编码系统模型，实现了数据的高效压缩并得到了良好的恢复图像。
This paper deals with a digital speech communicator of very low frequency and low bit digital communication based on software ratio, which USES the technique of QPSK and FEC coding.
本文论述了一种基于软件无线电的甚低频低码率语音数字岩层通信机，它采用了QPSK调制和FEC信道编码技术。
The test results show that when the coding algorithm is adopted, the compression ratio can be improved for 20%.
试验结果表明，采用这种编码算法时，压缩比可以提高20%；
MPEG4 is a video coding technology with the characters of high compression ratio, low requirement for transmission bandwidth and high quality of image.
MPEG4是一种压缩率高、对传输带宽要求低、图像质量高的图象编码技术。
Using presently successfully CELP speech coding method to compress the synthetic unit, under the ratio of 20, can still have high articulation synthetic speech.
采用目前较成功的CELP语音编码方法对合成单元进行压缩，在压缩20多倍的情况下仍能保证合成语音的高清晰度。
Compared with current desktop picture coding, it comes with better ratio of compression and is a better method for comprehensive coding.
该编码方法与现有桌面图像编码方法相比，压缩率大于现有桌面图像编码方法，是一种性能很好的综合编码方法。
KLT is used to remove the correlation of spectral redundancy as one-dimensional (1d) linear transform, and SFCVQ coding is applied to enhance compression ratio.
KL变换作为一维线性变换被用于消除一维(1d)谱冗余，且SFCVQ编码被应用于提高压缩比。
In order to improve compression ratio, the combination of lossy and lossless coding method is used in video coding systems.
为了提高压缩率，视频编码技术中一般会采用有损和无损压缩编码相结合的方式。
Finally, experiments have shown that it can accelerate the speed of coding greatly compared with the original approach of fractal image coding in similar PSNR and compression ratio.
实验结果表明，和原来的图像编码方法相比较，该方法在相近的峰值信噪比和压缩比的情况下，编码速度有所提高。
The efficient video coding technique aims to improve the video coding efficiency from two aspects of reducing the video coding computation complexity and improving the video compression ratio.
本发明旨在从降低视频编码计算复杂度和提高视频压缩比两个方面改善视频编码的效率。
To improve the compression ratio, image quality and coding efficiency, an image coding algorithm based on wavelet transform and scalar vector quantization is presented.
针对标量量化压缩比小而向量量化压缩速度慢、图像复原效果不理想等弱点，提出了基于小波变换的分类量化图像编码算法(简称“分类量化编码”)。
A practicable solution to the angle-digital conversion of synchro is provided, which includes cut section coding for the ratio of sine to cosine and sampling on double peak value.
针对自整角机的轴角数字转换，提出了分区间正余弦信号相比较编码和双峰值采样的方法。
The signal to noise ratio in the deep space communication channel is so low that high quality channel coding scheme is essential for deep space comnunication systems.
由于深空信道的极低的信噪比，具有高增益的信道编码技术是深空遥测系统必不可少的环节。
With the mean of range block, the compression ratio is improved, the coding time and reconstruction time are decreased.
采用值域块均值作为分形编码的参数可加快分形编码的速度，提高压缩比和加快分形图像压缩解码的收敛速度。
Simulation results show that the coding latency is saved greatly when mean compression ratio and decoding quality are kept acceptable.
实验表明，这种方案在平均压缩率和信噪比可接受的情况下，能够大幅度减少编码时间。
In this paper, the comparative experimental results of two methods are given, and the effects of quantizing and coding errors on the signal-to-noise ratio of CGH are also analyzed theoretically.
给出了两种制作方法的对比实验结果，同时就量化编码误差对CGH信噪比的影响进行了理论分析。
The experimental results illustrate that the proposed method efficiently improves the performance of entropy coding by increasing the compression ratio than that of plain entropy coding.
实验结果表明，该预处理方法改变了图像的统计特性，从而提高了图像的压缩比和熵编码效率。
The experimental results illustrate that the proposed method efficiently improves the performance of entropy coding by increasing the compression ratio than that of plain entropy coding.
实验结果表明，该预处理方法改变了图像的统计特性，从而提高了图像的压缩比和熵编码效率。
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