QR code real-time extraction algorithm in fast motion process

Abstract

The invention provides a QR code real-time extraction algorithm in a fast motion process, and the algorithm comprises the steps: firstly carrying out the extraction processing of an original image, carrying out the processing of an extracted image through employing an edge detection algorithm, extracting a binary edge graph, determining a candidate region according to the pixel statistical characteristics, generating a corrosion image through employing a corrosion algorithm in morphology, performing straight line detection on the corrosion image through a straight line detection algorithm based on Hough transform, performing clustering processing according to graphic features of a label pattern, and extracting two-dimensional code subgraph segmentation lines in the label pattern so as to quickly segment each two-dimensional code subgraph and finally extract a two-dimensional code. The algorithm is easy to implement, the target image is quickly positioned, the design of the label pattern enhances the anti-interference capability of the algorithm on the local contamination of the image, the positioning precision is high, a rapid target detection method is provided for two-dimensional code decoding, and the requirements of real-time detection in the rapid motion process and accurate positioning in industrial vision can be met.

Description

technical field [0001] The invention relates to the field of visual positioning and detection of industrial robots, and more specifically, to a real-time extraction algorithm of QR codes during fast movement. Background technique [0002] An industrial robot is a multi-joint manipulator or a multi-degree-of-freedom machine device for the industrial field. It can perform work automatically and is a machine that realizes various functions by its own power and control capabilities. Repeated positioning accuracy is the first indicator of industrial robots. Industrial vision systems are image recognition machines used for automatic inspection, workpiece processing and assembly automation, and control and monitoring of production processes. Industrial machine vision means low cost, acceptable accuracy, high ruggedness, high reliability, high mechanical and temperature stability. [0003] Two-Dimensions Code (Two-Dimensions Code), also known as two-dimensional barcode, is a graph...

AI Technical Summary

Problems solved by technology

The advantage of the first commonly used method is that the positioning is accurate. For example, the three position detection patterns of the QR code must conform to the characteristics of 1:1:3:1:1; High resolution will lead to poor real-time response characteristics of image scanning, and low resolution will lead to a decrease in the accuracy of position detection graphics; the advantage of the second method is that the real-time response speed is fast; the disadvantage is that for pictures with complex backgrounds, it is easy to cause straight line detection results divergence

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