This code draw a red rectangle aroud the face

matlab 寻找外接最小矩形，可以选择最小面积和周长最小- Find the smallest rectangle matlab external

matlab在二值图像上画了一个红框，之后怎么把这个图像帮存下来（连红框一起保存），画框的方法用的是rectangle和drawnow两个函数(matlab in the binary image on a red frame, then how to save this image (even with the red box to save), the box method is used rectangle and drawnow two functions)

能够在指定矩形内，随机生成一定数量、随机大小的椭圆。(It can randomly generate a certain number of ellipses of random size within a specified rectangle.)