Robust industrial electric meter digital number recognition method

Abstract

The invention discloses a robust industrial electric meter digital number recognition method, and belongs to the technical fields of image processing and pattern recognition. The robust industrial electric meter digital number recognition method mainly comprises two parts such as digital number segmentation and digital number recognition. Firstly, digital number edges in an industrial electric meter panel are detected through a Canny operator; then a digital number region can be effectively positioned and cut through a projection method; and finally, a classifier is constructed through a KNN algorithm based on digital numbers in a training set, and classification is performed on digital numbers to be recognized. According to the industrial electric meter digital number recognition method, a noise region and the digital number region can be effectively differentiated through Canny edge detection, so that the algorithm is enabled to be more robust. Meanwhile, the KNN algorithm is adopted when digital numbers are recognized, thereby not only being capable of effectively improving the efficiency of the algorithm, but also being capable of enabling digital number recognition to be more accurate.

Description

technical field [0001] The invention belongs to the technical field of digital image processing and pattern recognition, in particular to a robust digital recognition method for industrial electric meters. Background technique [0002] From the generation of electricity in the 19th century, and the widespread use of electricity in the 20th century. In the industrial world, the electric meter is used as an important tool to display various data of the production department in the enterprise. Especially in the electric power industry, in order to count the electricity consumption data of each instrument, the electric power department often arranges special personnel to carry out meter reading work. Among the large number of electric meters in existence, many are located in remote, inconvenient, and high-risk locations. This just needs to expend a large amount of manpower and material resources to arrange worker's meter reading, and because the long-term work of worker is pro...

AI Technical Summary

Problems solved by technology

However, the need to replace the original old-fashioned meters with new ones is often limited by the economy, so such meters have not been widely used

[0003] Some existing digital recognition algorithms in industrial meters have shortcomings such as low recognition rate and unrobustness

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