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加权中值滤波，用于图像增强，只用于超声图像，对超声图像去噪有很好的效果。内还包括信噪比计算方法。-weighted median filter for image enhancement, only for ultrasound images of ultrasound image denoising with very good results. Which is also a signal-to-noise ratio calculation.
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本程序是经典谱估计方法的程序，仿照＜数字信号处理＞胡广书．包含了书中后面三章的所有方法．另外还有ＦＩＲ，ＩＩＲ数字滤波器的去噪方法，ＳＶＤ特征值去噪，信噪比的计算等等．是一经典的程序组．希望和所有人共享-this procedure is classic method of spectral estimation procedures, modeled on the "Digital Signal Processing" Mr Kwong book. The book con
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本实验要求编写一个计算压缩-解压缩图像的均方根误差、均方信噪比的程序。该程序是一个通用程序。编写程序产生图示的结果。使用上面的保真度准则程序计算可视信息的损失特性。-Prepared in this experiment, a calculation of compression- decompression of the root-mean-square error of image, mean square signal to noise ratio of the procedure. Th
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ex9_15 比较相参积累和非相参积累。仿真先产生信号回波。得到回拨求模的结果，计算回波的信噪比。进行非相参积累和相参积累处理，计算相参处理和非相参处理后的信噪比。-Comparison ex9_15 coherent and noncoherent. Simulation of the first echo signal. Be the result of the call-back mode for calculating the echo signal to noise ratio. Fo
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此代码是小波零树算法的matlab实现程序，子程序较为齐全，包括最后计算压缩图像的峰值信噪比和压缩效果的源码。-This code is the wavelet zero-tree algorithm matlab implementation procedures, subroutines are more complete, including the final calculation of the peak signal to noise ratio and the compressed
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二维离散小波变换(Mallat快速算法)对图像进行二维离散小波变换, 变换级数大于等于3级,然后进行阈值化处理(阈值约为10左右),再统计系数中0的个数（百分比表示）并进行重构, 最后计算重构图像的峰值信噪比(PSNR).
数据：灰度图像lena.bmp或其它图像, 滤波器系数可以调用matlab中的wfilters函数获得, wfilters函数的使用请在matlab中help wfilters.-Two-dimensional discrete wavelet transform (Ma
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通信专业滤波算法中通过改变不同的观测角计算接受信号的信噪比。-Communications professional filtering algorithm by changing the different observation angle calculation to accept the signal-to-noise ratio.
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通信专业中有关接收信号的信噪比的计算，采用的matlab编程。-Communications professionals on the calculation of the signal-to-noise ratio of the received signal, using the Matlab programming.
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通信专业中有关滤波算法中信噪比计算的程序。-The communication professional filtering algorithm, signal-to-noise ratio calculation procedures.
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用matlab编程工具，编写具有操作界面的应用程序，通过菜单、对话框，选项框等界面控制，对算法进行演示。需要在应用系统中实现的算法及功能包括：
1、图像增强算法
（1）灰度线形变换：亮度及对比度可以调节（通过控制参数的改变，能够实时预览变化结果）；
（2）直方图均衡：可在界面上对比均衡前后的效果。
2、图像变换算法
（3）对一幅彩色图像进行DCT变换和反变换，对比结果和原图；
（4）仅保留左上角16X16的DCT系数，进行反变换，计算结果图的信噪比SNR。
3、图像分
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局部方差法的信噪比计算，通过canny算子进行窗口检测-The calculation procedure of the signal to noise ratio of remote sensing image is performed by the Canny operator.
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Calculation crosshairs diffraction image at different distances, Includes the modulation, demodulation, signal to noise ratio calculation, Compared with the results of theoretical analysis.
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Including the final calculation of the compressed image peak signal to noise ratio and compression of the source, The title of the commercial is undergraduate course you A complete set of brothers.
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Based on negative entropy largest independent component analysis, Optimization class contains several simple sample programs, Including the final calculation of the compressed image peak signal to noise ratio and compression of the source.
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数字图像处理，图像质量评价指标，matlab 计算图像峰值信噪比(Calculation of peak signal to noise ratio)
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