利用stm32f4采集ov2640摄像头图像，将图像二值化处理后，得到黑白图像，再经过算法，识别出图像的形状，目前可以识别：正方形、三角形、圆形(Using stm32f4 to capture ov2640 camera image, the image two value processing, get black and white images, and then through the algorithm to identify the shape of the image, can