A two-dimensional code image detection and identification device, device and method

Abstract

The invention discloses a two-dimensional code image detection and identification device, device and method, wherein the device includes: a detection unit, which uses a target detection model and weight data to preliminarily detect an acquired target image to obtain M pieces of two-dimensional code position information The image processing unit obtains the corresponding two-dimensional code image to process and generate the first two-dimensional code image; the feature extraction unit forms the contour information of the first two-dimensional code image into a contour list; the two-dimensional code screening unit, according to the coordinates in the contour list When it is judged that the Nth contour is a square, its image is intercepted to obtain the second two-dimensional code image; the two-dimensional code calibration unit calculates the horizontal angle of any side of the second two-dimensional code image, and rotates the second two-dimensional code according to the angle. code image to get the target QR code image. Through the present invention, multiple two-dimensional codes contained in an image can be automatically searched, and automatically cropped, rotated and corrected, which facilitates subsequent decoding and improves the identification efficiency of the two-dimensional codes.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of image processing, and in particular, to a two-dimensional code image detection and identification device, device, and method. Background technique [0002] Two-dimensional code (2-Dimensional Bar Code), also known as two-dimensional code barcode, mainly encodes information according to certain rules through a specific geometric figure. This encoding method can make the two-dimensional code store richer data. In the prior art, an image acquisition device or a photoelectric scanning device can be used to detect the two-dimensional code, and further identify the information contained in the two-dimensional code. [0003] In the production process of the production line, the photoelectric scanning device in the prior art, that is, a two-dimensional code scanning gun is usually used, and the two-dimensional code on the PCB circuit board is scanned and read by the worker holding the two-di...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the recognition of the two-dimensional code on the PCB circuit board in the prior art often requires multiple manual calibrations, and this method can only read one two-dimensional code at a time, and the recognition efficiency is low.

Images