jifenlianxi

stego program using the process of dct...... in matlab

这个MATLAB例程是系统误码率变化仿真(The MATLAB routine changes in the system simulation of bit error rate)

说明：  不变矩是模式识别里面很重要的一种技术，它可以用于提取不变性特征，从而进行模式识别，广泛用于图像处理当中，如图像特征匹配(Moment invariant pattern recognition which is a very important technology that can be used to extract invariant features for pattern recognition which is widely used in image processing, such as an image feature matching)

说明：  matlab编的时频分析的小程序，可用于各种信号的时频分析(matlab series of time-frequency analysis procedures can be used for a variety of signal time-frequency analysis)

构成不同频率的调制信号，相关分析过程的matlab方法，小波包分析提取振动信号中的特征频率。( Constituting the modulated signals of different frequencies, Correlation analysis process matlab method, Wavelet packet analysis to extract vibration signal characteristic frequency.)

说明：  Localization of coherent signals without source number knowledge in unknown spatially correlated Gaussia

计算大型矩阵的一般的gmres算法matlab程序。(large matrix calculation of the general gmres algorithm Matlab procedures.)

计算数组平均值，以求平均电流，进行异步电机驱动系统逆变器故障检测(Calculate the average value of the array to get the average current and detect the fault of the inverters in the asynchronous motor drive system)

说明：  原理：以待处理的像素作为中心，取一个nXn的模板，在模板中选择k个与待处理像素的值最接近的像素，将这k个像素的均值替换原来的像素值。 假设n=3，k=5，调用方法：b = KNNMeanFilter(a, 3, 5)(Principle: to be treated as the center pixel, take a nXn template select the template and the pending k-nearest pixel values of pixels, this k pixels mean replacing the original pixel value. Assuming n = 3, k = 5, call the method: b = KNNMeanFilter (a, 3, 5))

纯语音和带噪语音,信噪比,带噪语音的产生,语音信号的预处理一——消除趋势项和直流分量(Pretreatment with a pure voice and noisy speech signal to noise ratio, resulting in noisy speech, the speech signal- to eliminate the trend term and DC components)