实现对图像的膨胀和腐蚀功能，有可选的结构元素（椭圆、矩形、十字花），改代码基于MFC框架，和OPENCV类库，实现，代码可直接运行-Achieve the expansion and corrosion function of the image, with optional structural elements (oval, rectangle, cruciferous), change the code based on MFC framework, and OPENCV library,