基于stm32f103c8t6的黑白线识别，通过ov7670摄像头读取二值化后的图，并在oled上显示出来，并显示黑线的斜率与边距。-Black and white line recognition based on stm32f103c8t6, through ov7670 camera read after binarization figure, and displayed on the oled, and shows that the slope of the black line an