spectrum

BSS demo file for testing

应用傅里叶变换DFT，分析各种离散信号x(k)的频谱。离散周期信号可以展开成傅里叶级数，所以离散周期信号的频谱 是一个周期的周期性离散频谱，各谱线之间的间隔为 ，而且存在着谐波的关系。 (DFT application of the Fourier transform, analyze discrete signal x (k) of the spectrum. Discrete signal cycle can begin as Fourier series, the discrete signal spectrum is a cyclical cycle of discrete spectrum, the line between the interval, but there is a harmonic relationship.)

说明：  对图像分割，初始轮廓为椭圆。变化的过程中始终以椭圆为约束(For image segmentation, the initial contour is an ellipse.)

一个简短的灰色模型计算仿真程序，下载直接到matlab环境下运行即可(a short gray model simulation program, downloaded directly to the Matlab environment can be run under)

this is the code for the image compression using discrete cosine transform

finds the ratio between number of local extrema of a signal (vector) to the size of the signal (vector)

一阶马尔可夫过程，由白噪声生成有色噪声，希望有帮助！(First order markov process, the colored noise generated by white noise, hope to have help!)

code give you discrete points along the curve

估计一个点云数据的表面法线，表面法线是几何体表面的重要属性。(A point estimate the surface normal, surface normal geometrical surface cloud data is an important attribute volume.)

基于BP神经网络算法的非线性系统拟合，在matlab中实现BP神经网络非线性拟合算法。(BP neural network algorithm fitting of nonlinear systems)