data

fei chang you yong de cheng xu(you yong de WM xu)

图像灰度变换的基本运算函数，对于其了解有很重要作用，这是老师代码(Image gray-scale transformation of the basic arithmetic function, for a very important role in their understanding, it is the teacher code)

传统的宽带信号中抑制正弦干扰的方法是采用陷波器(notch filter),为此需要精确知道干扰正弦的频率.然而当干扰正弦频率是缓慢变化时,且选频率特性要求十分尖锐时,则最好采用自适应噪声抵消的方法.下图是用一个二阶FIR的LMS自适应滤波器消除正弦干扰的一个方案。该代码实现了以下功能： 1) 借助MATLAB画出了滤波器的误差性能曲面和误差性能曲面的等值曲线； 2） 给出了最陡下降法以及LMS算法的计算公式； 3） 用MATLAB产生了方差为0.05, 均值为0白噪音S(n)，并画出某次采样得到的波形； 4） 根据 2）中的公式，并利用 3）中产生的S(n)，在 1）中的误差性能曲面的等值曲线上叠加画出了采用最陡下降法以及LMS法时H(n)的在叠代过程中的轨迹曲线； 5）用MATLAB计算并画出了LMS法时误差随时间n的变化曲线（对应S(n)的某一次的一次实现）和e(n)波形； 6）在 1）中的误差性能曲面的等值曲线上，叠加画出采用LMS法得到的100次实验中的H(n)的平均值的轨迹曲线； 7）最终对结果进行了分析，具体见压缩包的word文档。 (Wideband signal in the conventional sinusoidal interference suppression method is the use notch filter (notch filter), this requires precise knowledge of the frequency of a sinusoidal interference . However, when the interference frequency sinusoidal changes slowly , and the selected frequency characteristic requirements are very sharp , then best use of adaptive noise cancellation method . following figure is a second-order FIR LMS adaptive filter to eliminate a program sinusoidal interference . The code implements the following functions:   A ) draw with MATLAB error performance of the filter surface and the surface contour error performance curve 2 ) gives the steepest descent method and the LMS algorithm formula 3 ) generated using MATLAB variance of 0.05 with a mean of 0 white noise S (n), and draw a particular sampling waveform 4 ) based on 2 ) of the formula , and use 3 ) generated in S (n), in a ) the error performance curves superimposed on the surface contour pl)

基于视频的背景差分法检测跟踪运动车辆，内有程序和视频(Video-based background subtraction method detecting and tracking moving vehicles, there are procedures and video)

果蝇优化算法，主要用于对支持向量机等算法参数的优化(FOA FOASVR_Training)

Most practical filters exhibit steady roll-off characteristic, in contrast to the sharp transition from the pass and stop bands. The important families of filters are: Butterworth, Chebyshev and Elliptic. As part of this lab, we study and design Butterworth filters. Butterworth filters are simple to design and have a maximally flat pass band response. In contrast the Chebyshev and Elliptic filters are difficult to design and have ripples in pass/stop band but have sharper roll off characteristics than Butterworth filters.

瑞利信道的仿真，以及瑞利信道下的编码解码过程的matlab实现(Rayleigh channel simulation, and the Rayleigh channel encoding and decoding process under the matlab implementation)

说明：  实现L-M非线性最小二乘优化，并有相关测试程序(LM achieve nonlinear least squares optimization, and related test procedures)

数据处理的一种方法，可实现目标轨迹的其实确定，实验结果证明效果很好。(A method of data processing can be realized in fact a target track, experimental results show a good effect.)

matlab的一些编程，包括图，插值，无约束优化，算法设计与分析等(Some of matlab programming, including drawings, interpolation, unconstrained optimization, algorithm design and analysis)