feifen

说明：  在MATLAB环境下进行双线性变换椭圆低通滤波器设计(In the MATLAB environment bilinear transform elliptical low-pass filter design)

Programm is counting inverse matrix

对特定图像进行颜色和亮度上的处理，并采用局部滤波方法改善全图滤波使得图像分辨率变低的问题，使用非交互式方法，程序可自行完成调整的整个过程。(Specific image processing on the color and brightness, and the use of local filtering method to improve the whole map filter makes the problem of low-resolution images, the use of non-interactive method, the program can complete the whole process of self-adjustment.)

数学建模，优化计算，以及模型实例， funtool - 函数计算器 tutdemo - MATLAB优化教程 mathmodl - 工具箱演示 (Modeling)

matlab实现商标文字分割~第一部分计算列梯度差，计算每个像素的列方向一定范围内（n）最大值和最小值的差距,统计该差值超过某一设定域值T的像素的个数，并将该统计个数存在 GY 向量。，第二部分计算行梯度差，计算每个像素的行方向一定范围内（n）最大值和最小值的差距，统计该差值超过某一设定域值T的像素的个数，并存在 GX 向量(matlab text segmentation ~ realize trademarks calculations are shown in the first part of the gradient difference, calculated for each pixel column direction of a certain range (n) the difference between maximum and minimum values, statistics of the difference exceeds a certain threshold T set of pixels of a few, and the statistics of the number of vectors exist GY. , The second part of the calculation line gradient difference, calculated for each pixel within a certain range direction (n) the difference between maximum and minimum values, statistics of the difference exceeds a certain threshold T set the number of pixels, and the existence of GX Vector)

单步单纯型法，输入为系数矩阵，右端向量，目标函数系数向量，基变量下标，非基变量下标和基变量初始值(Step simplex method, the input for the coefficient matrix, right vector, the objective function coefficient vector, the base variable subscript, superscript and the non-basic variable initial value of base variable)

稀疏表示用，大家可以参考相关的文档来读此次程序(Sparse representation)

check how median filter works

bwlabel homework matlab

已知光纤各参数，纤芯、包层折射率，芯径以及传输波长，做出光纤特征方程随U值变化的曲线，可据此求出U，继而求出传输常数(get the propagation constant by solving the characteristic function in a multimode fiber)