An Image Processing-Based Segmentation Method for Coded Characters of Laser Etched Metal Detonators

Abstract

The invention belongs to the field of digital image processing, and in particular relates to a laser etching metal detonator coding character segmentation method. Including: step S1, locating the coded area in the collected image of the detonator, obtaining the coded image of the detonator and performing enhancement processing; step S2, performing grayscale and binarization processing on the enhanced coded image of the detonator; step S3, processing the two The value-based detonator coded image is marked with connected domains, and the connected domains conforming to the character structure characteristics are reserved; Step S4, it is determined that the area where the connected domain width of the character is greater than a certain width is a cohesive coded character, otherwise it is a non-cohesive single character; Step S5, the cohesive code The characters are further divided into individual characters; step S6, sorting all the individual characters according to the positional relationship, to obtain the final segmented sequence coded characters. The invention can accurately segment the coded characters of the laser-etched metal detonator, and the real-time performance can meet the demand, which helps to improve the accuracy and efficiency of detonator code recognition in industrial scenes.

Description

technical field [0001] The invention belongs to the field of digital image processing, in particular to a laser-etching metal detonator coding character segmentation method. Background technique [0002] The detonator is a detonating material, which is generally used to detonate various explosives, booster tubes and detonating cords in bridge blasting, house blasting, mine blasting and other blasting scenarios. At the same time, detonators are also dangerous goods strictly controlled by the state, and the loss of detonators may endanger people's lives and property safety. In order to effectively manage the production and use of detonators, the relevant state departments stipulate that each detonator must be printed with a unique identification code on the surface of its shell during production. In detonator production and daily blasting operations, most of the records of detonator codes still use manual identification and manual transcription. This traditional working meth...

AI Technical Summary

Problems solved by technology

The above character segmentation methods have achieved good results in traditional optical character segmentation, but there are still many challenges in the face of complex industrial reality scenarios

The detonator shell is made of metal material, and the surface is arc-shaped, and the size is small, so the coded characters on the surface of the detonator are different from conventional optical printing characters and license plate characters. The discrimination is low and it is easily disturbed by noise such as wear, scratches and rust, and it is very easy to appear the phenomenon of character sticking in the binarized detonator coded image, which makes many traditional character segmentation methods unable to obtain detonator coded character segmentation. better effect

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