CONVNFFT_Folder

Kalman filter intuitive tutorial

说明：  有关时频分析的matlab的程序 希望对大家有所帮助(the time-frequency analysis of the procedures Matlab we hope to help)

hopfield network for neural network

pca主成分分析，改进的pca程序源代码(pca principal component analysis, improved pca program source code)

inverse perspective mapping

当信噪比较大时，采用广义最小二乘法可能会出现多个局部收敛点，解决这个问题的方法可用多级最小二乘法，一般来说多级最小二乘法包含三级辨识过程。利用输入输出数据，通过多级最小二乘法，可分别求的辅助模型，过程模型和噪声模型的参数估计值。在高噪声的情况下，多级最小二乘法明显优于广义最小二乘法，其收敛点唯一。(When the signal noise ratio (SNR), and by use of the generalized least squares method may appear more local convergence point, the way of solving this problem can be used multistage least squares method, and generally multistage least squares method includes three identification process. Using input/output data, through the multistage least squares, respectively for the auxiliary model, process model and noise model parameter estimation. In the high noise, multistage least squares method is obviously superior to the generalized least squares method, and its convergence point only.)

matlab 傅里叶变化原理及程序 函数、傅里叶变换分别以灰度图像的方式或立体图像形式出来(principles and procedures of Matlab Fourier transform functions, Fourier transform, respectively, form of way or three-dimensional image out of grayscale image)

说明：  自己做的一个Matlab小时钟，可以自己更换背景图片，供大家互相学习(This is a samll clock based matlab,you can change the background by yourself.Hope your enjoy about it!)

使用迭代式阈值算法来提高图像对比度。可以指定某个色阶作为阈值，所有比阈值亮的像素转换为白色；而所有比阈值暗的像素转换为黑色。 (The use of iterative threshold algorithm to enhance image contrast. You can specify a color scale as the threshold, all pixels lighter than the threshold into white and all pixels darker than the threshold value is converted to black.)

additive white gaussian noise in matlab