kiebiu_v17

XU等人做的关于GVF的小DEMO，里面比较了和传统蛇模型的不同之处以及GVF的优点，可以借此做些改进(XU and other people to do about the GVF small DEMO, which compared the traditional snake model and the differences as well as the advantages of GVF can be done to improve)

说明：  该源代码是图片切割的详细源代码，是2006年实现的(The source code is a detailed picture cutting the source code, implemented in 2006)

segments image F by using a split-and-merge approach based on quadtree decomposition. MINDIM (a positive integer power of 2) specifies the minimum dimension of the quadtree regions (subimages) allowed. If necessary, the program pads the input image with zeros to the nearest square size that is an integer power of 2. This guarantees that the algorithm used in the quadtree decomposition will be able to split the image down to blocks of size 1-by-1. The result is cropped back to the original size of the input image.

说明：  基于MATLAB解常微分方程组的详细介绍，解法分类(Solution of ordinary differential equations based on MATLAB )

计算给定函数的全局最优位置以及优化极值，并输出结果(Calculating a given function and optimize global best position extremes, and outputs the result)

Mathematic Algorithm to make complexion of two images

IIR滤波器的经典分析与比较，包括切比雪夫I型，II型、椭圆等！转换方式，冲击法，双线性（带通）(The classic IIR filter analysis and comparison, including chebyshev type I, II, elliptical, etc.! The switch pattern, impact method, double linear （bandpass filer）)

this is a useful book for matlab base electromagnetics programming

This is the second part of special handling, that makes PTRACE_LDT possible to implement.

利用：plot，stem，grid，line，axis，xlabel，ylabel，title 等绘制阶跃函数的图像。(draw the map of step function.)