Jpeg files can often be compressed by up to 25 % before there ' s a noticeable difference in quality Jpeg文件可以将图形文件压缩到25 %而保证一个极低的失真度。
The method describes and evaluates the quality of image through wavelet transform extracting luminance , definition and corelation 该方法通过提取图象的亮度，清晰度，相似度，尺度失真度等多种指标来综合评价图象质量。
Most of analog distortion meters apply the method of suppressed first frequency . the lowest frequency that these meters can detect is 2hz 一般模拟式的失真度测试仪都采用基波抑制法，此类失真度仪所能测的最低频率为2hz 。
As the development and application of microcomputer and single - chip microcomputer , the cost of harmonic distortion meter decreases rapidly 随着微型计算机和单片机的发展与应用，大大降低了采用谐波分析法的失真度仪的成本。
Under the control of microcomputer , the sine vave output is produced . base on the result , the spwm wave is static and reliable 从逆变环节的实验结果来看，产生的spwm波稳定、可靠，输出电压波形失真度小，电压波动率仅在2左右。
In the field of image processing , how to evaluate the distortion of processed images is an important problem . and the problem hasn " t been satisfactorily solved yet 在图像处理特别是在图像压缩等领域中，如何评价经过处理后的图像失真度是一个很重要的问题。
Effects of grain boundaries on the resistivity , capacitance of copper wires and the fuzzy degree of signal transmission have been studied in the present paper 摘要通过分析晶界对铜线材电阻率、电容值以及信号失真度的影响规律，研究晶界对线材传输信号影响的机制。
Experimental results certify that the proposed flyback inverter features small thd in the output sinusoid voltage , small size , light weight and fast dynamic response 研制的100va原理样机实验结果表明,该逆变电路输出正弦电压失真度小,体积小,输出动态及静态性能良好。
Under the same coding time as h . 264 algorithm , the average standard deviation of decoding video information estimated distortion can be decreased about 90 percent by 在与h . 264标准算法相同的编码耗时条件下，提出的算法最多可使对重构视频信息失真度估计的平均实验标准偏差下降约90左右。
