无人机视觉系统用于飞机着陆时的自主控制，基于图像识别将目标图像的灰度信息提取，校正，最终实现目标定位，指导飞机在目标区域安全降落。-UAV vision system is used for autonomous control of aircraft landing, based on image recognition will be the target image of the gray information extraction, correction, and ultimately achieve the target positioning, to guide the aircraft in the target area safe landing.