qrcode-opencv OpenCV实现qrcode二维码定位点检测 requirement OpenCV 4.1.2 VS2017 usage 1. 编辑 qrcode-opencv412.bat qrcode_opencv412.exe ./images/4.jpg params0: qrcode_opencv412.exe params1: 待识别图片路径 2. 解压qrcode-opencv412-dll.rar preview