1optical_flow

三维点云法向量估计综述由于获取方便、表示简单、灵活等优势，点云逐渐成为常用的三维模型表示方法之一。法向量作为点云必不可少的属性 之一，其估计方法在点云处理中具有重要的位置。另一方面，由于点云获取过程中不可避免的噪声、误差和遮挡，点云中通常含 有噪声、外点和空洞，并且部分采样模型如CAD模型，也会存在尖锐特征，这些都给法向量估计提出了挑战。对当前已有的点云 法向量估计算法进行综述，分析其原理及关键技术，着重分析它们在处理噪声、外点和尖锐特征等方面的能力并给出比较，最后 为未来研究提供了一些建议(The three-dimensional point cloud normal vector estimation summarized obtain convenient, represents a simple, flexible, and becoming one of the methods commonly used three-dimensional model represents the point cloud. Normal vector of one of the as point clouds essential attributes, its estimation method has important position in the point cloud processing. On the other hand, the noise is inevitable in the process to obtain because of the point cloud, error and occlusion, point cloud typically contains noise outside point and empty, and part of the sampling model such as CAD models, there will still be sharp features, which gave the normal vector estimated that presents a challenge. Overview of current existing point cloud normal vector estimation algorithm, analysis of the principle and key technologies, and analyzed their ability to deal with the noise, the outer points and sharp features and gives comparison, and finally provide some suggestions for future research)

该程序实现了Baum-Welch算法，对于通信里面的调制解调有很大帮助，其次，该程序具有通用性。(The program achieved the Baum-Welch algorithm, for the communication modem inside helps a lot, and secondly, the program has the versatility.)

一个多目标跟踪的matlab代码，里面附有说明文档。其中背景差分法可以实现实时更新。该代码在检测与跟踪少量目标时效果很好，但是跟踪目标大于8后，效果下降很多(A multi-target tracking matlab code, which accompanied by a document. One of the background difference method can achieve real-time updates. The code detection and tracking at the time a small number of very good goal, but follow-up after the goal is greater than 8, the effect of decline in a lot of)

本资料介绍了图论的概念，以及图论的用法，也包含了算法的matlab实现(Graph Theory matlab)

关于线性学习机的一些matlab编程的列子，初学者可以看看(Linear learning machine Liezi some matlab programming, beginners can take a look)

用matlab编的科斯塔斯环，希望有帮助(Costas loop using matlab helpful)

利用最小二乘法拟合直线和曲线，绘制出对比图形；简单绘制多种三维图形的代码(least-square fiting and draw graph)

本程序为Pattern时延差编码水声通信的基本实现程序(Pattern Time Delay Shift Coding)

信号的模糊函数，主要仿真巴克码的模糊函数(The fuzzy function of the signal, the main simulation Barker code ambiguity function)

实现了在MATLAB环境下进行汽车车牌识别的过程(Realize in the MATLAB environment Automobile License Plate Recognition process)