sonar_KNN.m

通过计算方差，确定划分坐标轴，最后，将点云划分到一个个格子中，这样的好处在于可以将噪点和有效点分别存储于不同的格子中，方便进行去噪。(k-d tree create;By calculating the variance, the coordinate axis is determined. Finally, the point cloud is divided into a number of lattices. The advantage is that the noise and the effective points can be stored in the different lattice, so that the noise can be de-noised conveniently.)

使用STM32内部AD，PA1作为输入，1637显示电压值(Using STM32 internal AD, PA1 as input, 1637 display voltage value)

说明：  opencv 4.1官方文档，可以有效学习opencv。介绍了基本API等(Opencv 4.1 official documents, you can effectively learn opencv. Introduced the basic API and so on)

微信支付php,官方demo,可以作为参考使用(WeChat pays PHP, official demo, which can be used as reference.)

这个是IMX6的IPU相关的编程资料，有需要的，可以直接下载的，非常感谢(linux imx6 ipu, free scale imx6 and imx8)

螺型和牙型.pdf 介绍常见的螺丝种类 很实用的工程资料-Lo-and-teeth. Pdf screws on the common variety of practical engineering data

一个小型网络仿真器的实现-a small network simulator Implementation

利用AE接口，基于C#实现arcgis数据导入(AE implementation of ArcGIS data import)

平曲线计算程序，是道路设计中计算曲线要素的程序(Flat curve calculation program, is calculated curve of road design elements of the procedure)

根据已经得到的肺实质区域检测当中是否含有肺结节(The obtained which has lung parenchymal area comprising detecting whether pulmonary nodules)