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digital image processing

MATLAB基础画图、函数操作等模板学习程序，另外还有语音合成和音乐合成两个实验程序，让你尽情体验MATLAB的魅力！(MATLAB foundation drawing, function and operation template learning program, in addition to the two experimental procedures for speech synthesis and music synthesis, let you Experience MATLAB charm!)

手写数字识别程序，matlab运行前，先点击安装控件，内部有三种模型，GUI形式，使用方便(Handwritten numeral recognition program, matlab run before, first click on the installation of control, there are three kinds of models, GUI form, the use of convenience)

数字图像处理之边缘检测（边缘检测prewitt.m）(Edge Detection of digital image processing (edge detection prewitt.m))

variational bayesian blind image restoration

对光学系统中常用的正弦振幅型透射光栅进行了仿真，仿真结果有衍射图案和光强沿x轴方向的曲线。(Of the optical system used in the amplitude of the sinusoidal transmission grating-based simulation, simulation results diffraction patterns and light intensity along the x-axis direction of the curve.)

该程序用Matlab实现hilbert-huang变换，含EMD，HHT，边际谱等，有一些实例，较完善。(The program uses Matlab to achieve hilbert-huang transform, including EMD, HHT, the marginal spectra, there are some instances better.)

在采样点之间的频率响应是由各采样点的加权内插函数叠加而形成的，因而有一定的逼近误差。该误差大小取决于理想频率响应的形状，理想频响特性变化越平缓，内插值越接近理想值，逼近误差越小；反之，如果采样点之间的理想频响特性变化越陡，则内插值与理想值之间的误差越大，因而在理想滤波器不连续点的两边，就会产生尖峰，而在通带和阻带就会产生波纹。用频率采样法设计的实际滤波器频率响应如图1所示。由图1可知，实际滤波器的阻带衰减取决于内插函数第一旁瓣幅度值的大小，其大小决定了所设计的滤波器的阻带性能。(Interpolation function superimposed between sampling points of the frequency response is weighted within each sampling point and the formation of, and thus have a certain degree of approximation error. The size of this error depends on the shape of the ideal frequency response and the ideal frequency response characteristic change is more gentle, interpolated and more close to the ideal value, the smaller the approximation errors Conversely, if the sampling point between the ideal frequency response characteristics of the steeper the change, and then the interpolated the larger the error between the ideal value, and thus in the ideal filter both sides of the discontinuity point, will produce spikes occurs ripple in the passband and stopband. Actual design frequency sampling filter frequency response is shown in Figure 1. Figure 1 shows, the actual filter stopband attenuation depending on the interpolation value of the size of the first side-lobe amplitude of the function that determin)

matlab经典时频分析工具箱，短时傅立叶变换（STFT），维格纳分布（WVD）,伪维格纳分布（PWVD）等时频分析方法(Toolbox short-time Fourier transform (STFT) Wigner distribution (WVD) pseudo-Wigner distribution (PWVD) frequency analysis method matlab classic time-frequency analysis)

Kalman滤波器，实现离散随机信号处理中的Kalman程序(Kalman filter, the realization of discrete-time stochastic signal processing procedures Kalman)