峰值信噪比

实验表明，和其他方法相比，峰值信噪比得到了显著提高，图像对比度得以提高，视觉效果得以改善。

The results of experiments show that compared with other methods , the proposed method can increase PSNR greatly , and also improve the image contrast and the visual effect .

该信息隐藏方法已通过局域网隐秘传输模拟实验，嵌入机密汉字信息后的语音具有较好的峰值信噪比（peakSNR，PSNR），信号的平均失真（normalaveragedistortionmetrics，NADM）也很小。

The method was simulated in local area networks , which shows that the speech embedded secret Chinese characters have better PSNR ( peak SNR ) and the NADM ( normal average distortion metrics ) of the signal is very small .

数值实验表明，与TV模型相比，改进的方法无论是在视觉效果还是峰值信噪比上都有明显的提高。

Compared with the TV model , the experimental results show improvements of both the proposed models .

仿真证明，该算法用于图像压缩具有良好效果，和标准BP算法相比，缩短了压缩时间，提高了峰值信噪比。

Simulation results show that this algorithm has better compressing time and PSNR compare to BP neural network algorithm .

随着湍流增大，峰值信噪比（peaksignaltonoiseratio，简称为PSNR）值逐渐变小，表明成像质量逐渐下降。

As the strength of turbulence increases , the PSNR ( Peak Signal to Noise Ratio ) gradually becomes smaller , corresponding to the decrease of image quality .

仿真结果表明，该算法与其它自适应门限去噪算法相比，去噪后的图象具有更高的峰值信噪比（PSNR）。

Experimental result shows that this algorithm yields higher PSNR compared to other adaptive wavelet denoising algorithms .

客观参数评价是有益的参考方法，在改善某一压缩方法时，峰值信噪比（PSNR）是个较好的衡量标准；

The external evaluation was useful , and PSNR was a good criterion when improving a compression method .

实验结果表明，该算法在主观视觉质量和客观峰值信噪比（PSNR）上都优于传统方法。

Experimental results show that the algorithm outperforms the traditional one on both visual quality and Peak Signal-to-Noise Ratio ( PSNR ) .

同时，通过计算不同去噪图像的峰值信噪比（peaksignaltonoiseratio，PSNR），进一步证明新算法获得的去噪图像能够获得更令人满意的去噪结果。

At the same time , through the calculation of different image denoising PSNR ( peak signal to noise ratio , PSNR ), It further proof that the new algorithm for image denoising can get more satisfying de-noising result .

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。

Experimental results show that the improved hybrid image coding can improve the PSNR of the rebuilded image at the same compression ratio .

实验还讨论了候选区、阈值与击中值域块个数、编码时间和峰值信噪比（PSNR）间的关系。

The relationship among the candidate region , threshold , hit range blocks , encoding time and PSNR is discussed by the experiments .

临床实验结果表明线性滤波方法中的超限邻域平均法得到的峰值信噪比（PSNR）最大。

This clinical result shows the PSNR ( Peak Signal Noise Ratio ) in the method of super-neighborhood average filtering is the biggest .

与原始的层式DCT相比，该算法在同样的压缩比，尤其是较低压缩比下可以获得更高的峰值信噪比。

An improved layer DCT coding algorithm is proposed , which can achieve better PSNR under the same condition of compression ratio compared with the traditional layer DCT coding algorithm .

实验表明，该算法与MPEG-4的静止图像压缩算法相比较，重构图像的峰值信噪比（PSNR）值在相同码率下有较大的提高。

The peak signal-to-noise ratio ( PSNR ) of the reconstructed image is improved compared to still image compression algorithm of MPEG-4at the same bit ratio .

该法是在给定的速率限制下，使整个视频序列的平均峰值信噪比（PSNR）最大，也就是使序列的总体失真最小。

The method maximizes the average PSNR of the whole video sequence or minimizes the overall distortion , subject to the bit rate constraint .

最后分别对单色和彩色图像序列进行了实验，利用峰值信噪比（PSNR）来度量算法的性能。

Experiments are performed on monochrome and color image sequences , and performance is measured by the peak signal to noise ratio ( PSNR ) .

实验结果表明，MDCT算法在保持JPEG图像峰值信噪比和DCT直方图特性的基础上，隐藏容量有较大幅度的提高。

Experimental results show that the algorithm has a relatively large increase on the hiding capacity while maintaining the peak signal to noise ratio of JPEG images and the DCT histogram features .

在寻找最优几何变换参数时，采用峰值信噪比（PSNR）作为参考图像和浮动图像的相似性测度。

When searching the optimal geometric transform parameters , peak signal-noise ratio ( PSNR ) was selected as the similarity measure between the reference and floating images .

实验结果表明，在码率为0.8bit／pixel的情况下，重建图象的峰值信噪比为28dB，恢复质量好于直接使用JPEG编码。

The experimental results show that the PSNR of the reconstructed image is 28 dB with a rate of 0 8 bit / pixel , and the reconstruction performance is superior to that using JPEG .

采用了峰值信噪比（PSNR）和信息熵（IE）等图像质量评价标准做定量分析和实验验证。

The evaluation parameters of image quality are , such as peak signal to noise ratio ( PSNR ) and information entropy ( IE ), used to do quantitative analysis and experimental verification .

这种算法能够较精确进行光流运动估计，减轻Horn方法中全局平滑约束对运动边界的影响，提高估计的峰值信噪比。

Using this method , accuracy of estimation can be enhanced , the harmful effect on the motion edge by global smoothness constraint in Horn algorithm can be weakened and the PSNR of estimation can be improved .

最后，对标准图像进行测试分析，实验结果表明该算法在图像精确重构不需要额外的附加信息，且可以提高图像的峰值信噪比（PSNR）。

At last , the experiment results demonstrate that the algorithm not only allows perfect reconstruction without any overhead cost but also can improve the PSNR of the image .

计算机仿真结果表明：与DSS法相比，本算法的平均搜索次数和平均编码时间大大减少，但码流长度和峰值信噪比基本相当。

The results of simulation indicate that the average search times and average encoding time with the algorithm are much less than those with DSS algorithm , with almost similar code length and average PSNR .

通过用多种码流测试仿真得出的数据显示，相对于原来的滤波算法峰值信噪比（PSNR）改变较小，主观上图像的视觉效果有较好的改善。

Experimental results on several kinds of a stream show that the Peak Signal to Noise Ratio ( PSNR ) only has change while the subjective image quality improves well .

实验结果表明，SPIHT改进算法与原来的SPIHT算法相比，在相同的压缩比下可以获得更高的峰值信噪比。

Experiments show that the improved SPIHT algorithm could provide higher PSNR value than the original SPIHT algorithm at the same compression rate .

结果表明该方法的峰值信噪比高于传统小波方法。3、给出了一种基于改进Sobel边缘检测算子和数学形态学的多车牌定位方法。

The results show that this method has higher PSNR than primary wavelet transform . Thirdly , a multi-vehicle plate position method based on improved Sobel operator and morphology is given .

实验结果表明，该方法和人的主观评价方法MOS的相关系数为0.92，大大高于常用的峰值信噪比和MOS的相关系数0.69。

Experiments show that the correlation coefficient between the proposed approach and the human subjective assessment mean opinion score ( MOS ) is 0.92 , much higher than 0.69 , the correlation coefficient of conventional PSNR with MOS .

基于软阈值的广义交叉验证准则（GCV）已运用于图像去噪中，但此方法对图像峰值信噪比（PSNR）的改善有限，不能有效保持细节。

The denoising method based on GCV has been used in image denoising , but it is hard to improve PSNR greatly and can ′ t maintain the details of the image well .

为了增加图像的隐藏量，改善低位替换后宿主图像的质量，该文以评价图像质量的峰值信噪比（PSNR）为准则函数，采用Tabu搜索来求解最优的低位替换。

To increase the quantity of the embedded data and improve the quality of embedding result , the algorithm finds the optimal LSBs substitution by Tabu Search ( TS ) with the criterion function PSNR .

针对JointModel（JM）采用的算法存在的对不同的初始量化参数码率不平稳和PSNR（峰值信噪比）差异过大等问题进行分析，在原有算法基础上作出一定的改进。

This article gave a detailed analysis about the problem that the algorithm employed by JM ( Joint Model ) achieved insecure rate and PSNR ( Peak Signal to Noise Ratio ) for different preliminary quantization parameters , and made some improvement about the algorithm .