PSNR_Metric

1. 选择一个wav文件作为分析的对象，对该信号进行读取（使用wavread函数）； 2. 音乐信号的频谱分析：首先画出信号的时域波形，然后对信号进行频谱分析得到信号的频谱特性。 3. 设计一组数字滤波器并画出各个滤波器的频率响应 (Filter)

孙即祥：《现代模式识别》P.26：根据相似性阈值和最小距离原则的简单聚类方法MATLAB（另一种方法实现同一种算法）(SUN Xiang: " Modern pattern recognition" P.26: According to the similarity threshold and minimum distance principle of a simple clustering method MATLAB (another way to achieve the same kind of algorithm))

This function calculates the radial derivative of an input image. Input parameters: inputImage - the image to calculate the derivative from radialFilterLength - the length of the filter to use, total length will be 2*radialFilterLength+1 centerX and centerY - the point that is considered the center of the image, for the calculation minRadius and maxRadius - the minimum and maximum radius to calculate the angular derivative for. radialApproach - set to 1 to use a radius and angle search method, or 0 for a per-pixel approach

Trigonometric functions using MATLAB to achieve power spectral analysis

说明：  时间序列分析中参数估计方面的实现,在matlab环境下实现的代码(parameter estimation)

用MATLAB实现，基本的图形变换、图像的各种滤波、平滑、锐化、图像的直方图变换(Basic graphics transformation, the image of a variety of filtering, smoothing, sharpening, image histogram)

FDTD analysis in two dimension using MATLAB environment....

北京大学控制类计算机辅助设计的课件及课堂实例程序(Beijing to control the type of computer-aided design software and examples of classroom procedures)

基于matlab环境下，利用矩阵位移法计算连续梁弯矩图程序设计(Based on the matlab environment, calculated using the matrix displacement method continuous beam bending moment diagram programming)

拟合算法：通过matlab的拟合函数实现拟合(Fitting algorithm: fitting function through matlab realize fitting)