Two-dimensional code identification method and device

The invention discloses a two-dimensional code identification method and equipment. Comprising the following steps: S1, positioning an ROI region of a two-dimensional code by using a coarse positioning algorithm; s2, judging whether the ROI region exists or not; s3, if yes, positioning the two-dimensional code in the ROI area by using a precise positioning algorithm; if not, returning to execute the step S1; and S4, obtaining two-dimensional code information by using a region detection algorithm. According to the two-dimensional code recognition method, the industrial camera is used for collecting the on-site real-time two-dimensional code picture for self-adaptive positioning analysis, the two-dimensional code graph is preprocessed, the interference of smudginess around and above the two-dimensional code is eliminated, meanwhile, the angle of the skew two-dimensional code is turned right, and the two-dimensional code recognition accuracy is improved. And finally, the information of the two-dimensional code i