signalsandsystems

这本电子书是Stephen J. Chapman著，邢树军译，内容简单，讲解详细，并且附有常见的编程错误和好的编程习惯，比较适合初学者。(This eBook is Stephen J. Chapman a, Xing Shujun translation, is simple to explain in detail, and with a common programming errors and good programming habits are more suitable for beginners.)

A simple Butterword filter

基于Matlab平台的绘制M分形图的一个小代码，希望大家通过学习能优化代码(platform based on the mapping of Matlab M fractal images of a small code, we hope that through learning can be optimized code)

fem_matlab有许多基本程序，解答各种微分方程，这些都是在FEM中可能用到的。(fem_matlab There are many basic procedures, to answer a variety of differential equations, which are in the FEM may be used.)

Ensure the default values are set for any receiver, activity, service, etc. of Calendar.

Gray world method for color balance

常见canny, sobel 等算法的图像边缘检测比较(Edge Detection common canny, sobel algorithm comparison)

画三维bar图，可以改变文字角度和灵活调节颜色。(Draw three-dimensional bar charts, you can change the text angle and the flexible adjustment of color.)

说明：  基于当前统计模型的matlab程序仿真实现(Statistical model based on the current simulation matlab program to achieve)

对图像作直方图均衡化处理，列出原图像直方图与均衡后图像的直方图的对照；灰度级的转换调试(For histogram equalization of image processing, listing the original image histogram and histogram equalization contrast gray-scale conversion of debugging)