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很简单实用的一段边缘检测的matlab程序，请各位指正。(A very simple and practical procedures for edge detection matlab, please correct me.)

说明：  15个可以用于路径规划经典算法研究与总结合集。(15 can be used for path planning the classic algorithm research and summarize Collection.)

1. 在matlab中分析基于分离变量法的解析解； 2. 利用简单迭代法求解，与解析法结论对比，分析求解结果的精确度。分析过程至少包括：在网格尺寸为0.1 m和1 m两种条件下，两次迭代差值最大为10-10时的分析结论； 3. 利用超松弛迭代法分析，选择松弛因子，分析其对收敛速度（即迭代次数）的影响，并确定最优值。分析过程至少包括：在网格尺寸为0.1和1两种条件下，两次迭代差值最大为10-10时，迭代次数随松弛因子的变化，得到对应的最优松弛因子，与经验值（课本165页式子3.7.15）进行对比。(1. Analyze the analytical solution based on the separation variable method in matlab. 2. Using a simple iterative method to solve, compared with the results of the analytical method to analyze the accuracy of the solution. The analysis process at least includes the following conclusions: when the mesh size is 0.1m and 1m, the maximum difference between two iterations is 10-10. 3. Analyze using the relaxation relaxation iteration method, select the relaxation factor, analyze its influence on the convergence speed (ie the number of iterations), and determine the optimal value. The analysis process at least includes the following: when the mesh size is 0.1 and 1 and the maximum difference between two iterations is 10-10, the number of iterations varies with the relaxation factor, and the corresponding optimal relaxation factor and empirical value are obtained ( Textbook 165 pages (3.7.15) for comparison.)

超宽带定位系统中重要参数，GDOP分析，采用三站TOA定位方法(UWB location system important parameters, GDOP analysis, TOA positioning method with three points)

Calculate the periodogram

水印提取检测的matlab程序代码 对嵌入水印图像进行dct变化，提取水印序列，计算序列相关值(Detection of watermark extraction matlab code for dct embedded watermark image change, extract the watermark sequence, calculating the value of serial correlation)

对森林生态系统的动力学仿真很有用的东西值得大家学习学习(On the forest ecosystem dynamics simulation is useful to learn something worth learning)

ALOHA协议程序：计算实际产生的业务量 ，吞吐量，平均延迟(ALOHA protocol procedures: calculation of actual traffic, throughput, average delay)

ETF统计套利的书籍，目前正在用matlab进行回测，希望有喜欢的人，也可以了解下(ETF statistical arbitrage books, is currently in use of matlab to test, hope to have of the person you like, also can understand)

利用迭代方法自动确定图像目标分割阈值。程序包内有matlab源程序，示例图片及运行结果比较。(Iterative method automatically determines the image object segmentation threshold. Matlab source code within the package, sample images, and operations were.)