2DCOS

该代码实现了图像的滤波处理，这段代码给出了三种滤波矩阵，包括图像平滑(低通滤波器)、图像边缘提取(高通滤波器)等。用户下载后可以根据自己需要修改滤波矩阵和参数值，以便实现特殊的功能。为了形象的说明滤波效果，代码执行后可以看到滤波前后滤波后的对比图像。 (The code of the image filter processing, the code shows the three filter matrix, including the smoothing (low pass filter), image edge detection (high-pass filter) and so on. Users can download their own need to modify the filter matrix and the parameter values in order to achieve a specific function. Filtering effect to the image description, code execution before and after filtering can be seen after comparison of the filtered images.)

说明：  用matlab处理图像的入门函数。包括图像读取，图像叠加，增强等。(analysis image signal using matlab method )

基于高斯点原理求解泛函极值的MATLAB程序。(Solving functional extremum MATLAB programs Based on the principle of Gauss points.)

MATLAB实现截屏的小程序,能够进行部分截取(MATLAB implementation applet screenshot)

基于HHT的matlab实现，通过EMD对信号进行分解，利用HHT变化得到时频谱(Based on the signal matlab HHT transform implementor)

一个关于matlab的基础知识的介绍，希望能对初学者有帮助！(A basic knowledge of matlab introduction, hoping to be helpful for beginners!)

MATLAB与外部程序接口编程，包括C/C++,java等等。(MATLAB external interface programming, including the C/C++,java, and so on.)

收集了一些处理声音信号的实例，可供对音频处理的爱好者参考使用。(collected some examples of control noice signal. fans can used by reference. )

将Quaternion四元素坐标系转换为一般的欧拉角坐标系，避免采用反三角函数导致的值域限制问题。参数xi为搜索的精度，对于每个欧拉角可以分别设定，xi越小，搜索越精确。(Quaternion quaternion coordinate system will be converted to general Euler angle coordinate system, avoiding the use of inverse trigonometric functions due to range limitations. The accuracy of the search parameter xi, for each Euler angle can be set separately, xi smaller, more accurate search.)

Interpolation-spline/polynomial interpolation example. Integration-integration using trapezoidal rule (equally spaced data)