此方法绘制关键点对象或(x,y,rot)元组列表...
img.draw_keypoints([(x, y, rot)], color = (r, g, b), size = 20, thickness = 2, fill = False)
img.draw_keypoints([(x, y, rot)], color = (r, g, b), size = 20, thickness = 2, fill = False)
micropython无法导入好多Python里用到的库,比如numpy,但是如果我需要用到这些库应该怎么办呢