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基于MATLAB下的背景差分算法，通过第一帧和中间帧以及最后帧得出背景。(Based on the background subtraction algorithm under the matlab programming language, through the first frame and the middle frame and the last frame background.)

判断一个点是否在两条线段（或是四个点）所包含的的区域内(Determine a point whether the two segments (or four points) are contained within the area)

基于龙格库塔法的Matlab数值积分函数(Runge-Kutta numerical method based on Matlab integral function)

用matlab编写的GUI射击小游戏，靶子图片为pp，可直接更换(Prepared using matlab GUI shooting game, the target image is pp, can be a direct replacement)

用GUI做的图像处理平台一些算法的演示，包括图像去噪图像加密图像编码解码(the tool of image processing)

Jacobi矩阵一般是坐标变换时用的——这个坐标系的坐标依次对那个坐标系的坐标求偏导数即得Jacobi矩阵。积分时从直角坐标变到球坐标、极坐标肯定要在积分号里乘上Jacobi矩阵的行列式。 若其特征值全为正，则此Jacobi矩阵正定，即它的任何二次型都大于零。并且如果是对称Jacobi矩阵，还可以实相合于一个单位阵。是比较强的条件。矩阵A的特征值是这个关于x的方程的所有根 det(A-xI)=0(Jacobi)

基于matlab 的动态阈值 的白平衡算法，实现分区处理；(Dynamic threshold of the white balance algorithm based on matlab)

产生房间脉冲响应的源代码，在多噪声，多混响的情况下，信噪比很低，信干比也很低，同时伴随着噪声是非平稳的情况。(room impluse response in the nonstation snr sir is very low circumstance)

this is very important programs written in matlab to develop the using of the pso as optimization

Brain Tumor Segmentation Calculation in Brain MR Images using K-Mean Clustering and Fuzzy C-Mean Algorithm