Vehicle-mounted Information Transmission System Based On Two-dimensional Code

As the most widely used Two-dimensional code,Quick Response Code(QR code)plays a great role in logistics management and traffic travel.With the development of intelligent driving,on-board cameras are almost all over the body.This subject combines on-board cameras with QR codes and QR codes,which can be a supplement to intelligent driving information transmission.The vehicle-mounted information transmission system of the dynamic QR code is a one-way transmission mode with the two-dimensional code as the information carrier and the optical path as the transmission medium.This information transmission mode does not require specific protocols or interfaces,signals do not diverged,do not require pre-pairing or connection,and has high security.It can realize end-to-end information transmission only relying on the display screen and camera.In this paper,starting from "how to locate and identify QR codes faster and more accurately",the positioning,correction and recognition algorithm of QR codes under complex conditions is systematically studied in depth,and an image preprocessing algorithm against uneven illumination and electronic noise interference is designed.At the same time,a positioning method based on its own symbol features is proposed,and K-means clustering is adopted to eliminate redundant interference points,so as to accurately obtain the coordinates of the four vertices of the QR code,which can be extracted and corrected at the pixel level.By optimizing the positioning accuracy and speed of QR code,the vehicle-mounted information transmission system based on QR code was designed,and its performance was analyzed in different environments.The experimental results show that the system can realize accurate and fast positioning recognition of QR under the environment of complex background,uneven illumination and electronic noise interference,and complete the transmission of large capacity text information on this basis.Under the condition of ensuring real-time performance,it has a good recognition rate.