使用OpenCV进行简单绘图，例如绘制直线，圆形等不同形状的图形(Using OpenCV to do simple drawings, such as drawing straight lines, circles and other shapes of graphics)

利用opencv 进行简单的绘图功能 基本的界面的，一些简单的功能，(Using OpenCV to do simple drawing function, basic interface, some simple functions,)