那不是直线，是线段，用find_line_segments https://docs.singtown.com/micropython/zh/latest/openmvcam/library/omv.image.html#image.Image.image.find_line_segments 写for循环遍历，判断length https://docs.singtown.com/micropython/zh/latest/openmvcam/library/omv.image.html#image.line.line.length