基于opencv4.0 pyzbar和python实现二维码实时检测+定位，利用摄像头完成了实时对二维码的识别和检测、定位，获取二维码的中心点与外接最小矩形。Based on opencv4.0 pyzbar and python, real-time detection + positioning of the two-dimensional code is realized, and the real-time identification, detection, and positioning of the two-dimensional code are completed by using the camera, and the center point of the two-dimensional code and the smallest external rectangle are obtained.