flex 组件，用于绘制图形、流程图等 能够非常容易扩展继承,flex components for rendering graphics, flowcharts, etc. very easy to extend the inheritance

鸟瞰图程序，opencv自带，-Aerial view of program

本程序得先通过摄像机标定，获取内参矩阵和畸变系数矩阵，然后根据learning opencv 中的方法进行鸟瞰变换。其中有可执行的程序，和源代码。-This procedure was first through the camera calibration, access to internal reference matrix and the distortion coefficient matrix, and then according to the method of learning