read_data_from_txt

Solve Equation by newton rofson method for students to solve own problems.

使用matlab语言实现的时域有限差分算法(finite differentiate time domain)

说明：  matlab对轨道角动量的仿真，可以更改波长和模态值以适应光学和电磁应用(Matlab simulation of orbit angular momentum can change the wavelength and mode value to adapt to optical and electromagnetic applications)

探讨MATLAB在 数字水印中的应用，利用MATLAB语言编程实现了一类数字水印算法的嵌入、攻击及提取过程,并给出了程序运行 的结果。 (MATLAB to explore in the digital watermarking application, the use of MATLAB programming language to achieve a class of digital watermarking algorithm for embedding, attacks and extraction process, and gives the results of the program is running.)

用MATLAB去除移动车辆行驶过程的阴影，并对视频进行优化(Remove the shadow of the mobile vehicles using MATLAB, and to optimize the video)

POWER DVD LISENCE KEY

FIR Band pass filter using different windowing techniques

用于计算相机外参数，即CCD像素坐标与三维世界坐标的对应关系，输入参数是世界坐标标定点对，输出外参数矩阵(Outside the parameters used to calculate the camera, that the correspondence between CCD pixel coordinates and the coordinates of the three-dimensional world, the world coordinate input parameter calibration point right, outside the parameters of the output matrix)

拟牛顿法和最速下降法(Steepest Descent Methods)一样只要求每一步迭代时知道目标函数的梯度。通过测量梯度的变化，构造一个目标函数的模型使之足以产生超线性收敛性。这类方法大大优于最速下降法，尤其对于困难的问题。另外，因为拟牛顿法不需要二阶导数的信息，所以有时比牛顿法(Newton s Method)更为有效。如今，优化软件中包含了大量的拟牛顿算法用来解决无约束，约束，和大规模的优化问题。(The quasi-Newton method and the Steepest Descent Methods only require that each step iterations know the gradient of the objective function. By measuring the change of the gradient, constructing a model of the objective function is sufficient to produce superlinear convergence. This method is much better than the steepest descent method, especially for difficult problems. In addition, because the quasi-Newton method does not require information on the second derivative, it is sometimes more effective than the Newton s Method. Today, the optimization software contains a large number of quasi-Newton algorithm used to solve the unconstrained, constraint, and large-scale optimization problems.)

说明：  基于小生境遗传算法的DOA估计，并附相关MATLAB仿真图结果，与其他算法进行相关比较(Based on Niche Genetic Algorithm for DOA estimation, together with related results of MATLAB simulation diagram, compared with other related algorithms)