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Detonator shell dot character identifying method

A character recognition and shell technology, applied in the field of pattern recognition, can solve problems such as unevenness, dot matrix character images cannot be effectively extracted, discontinuous character extraction, etc., to achieve the effect of maintaining connectivity

Inactive Publication Date: 2015-02-04
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the dot matrix character image cannot be effectively extracted, the present invention provides a detonator shell dot matrix character recognition method, which solves the problem of discontinuous character extraction under an uneven background, and according to the selected feature value and multi-level classification method Get the recognition result

Method used

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  • Detonator shell dot character identifying method
  • Detonator shell dot character identifying method
  • Detonator shell dot character identifying method

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Embodiment Construction

[0021] figure 1 Be the method flow chart of the present invention, take the detonator that is coded as 6470306C18077 as an example and the specific implementation steps are as follows:

[0022] S1: collection of images; the camera is fixed, the lens is perpendicular to the character surface of the detonator shell, the character string in the character surface and the lens picture are kept horizontal, and the character image is collected; (herein as figure 2 Take the collected original image as an example to explain the following steps)

[0023] S2: preprocessing of images; figure 2 The character image is grayscaled and binarized:

[0024] S21: image grayscale; the character image ( figure 2 Shown) format is converted from the original RGB format to YUV format

[0025] Y U V = ...

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Abstract

The invention discloses a detonator shell dot character identifying method and belongs to the field of image processing and mode identifying. The detonator shell dot character identifying method includes that 1, carrying out graying and binaryzation pre-treatment on gathered character images; 2, carrying out morphological filter and near neighborhood search correction on discontinuous character images; 3, obtaining single character region images through a connected domain segmentation method; 4, using the distance between the character boundary and the zone boundary as a recognition feature value, and using a minimum distance classifier and a multi-stage identification method to obtain the final identified result. The detonator shell dot character identifying method is suitable for identifying fracture characters, and the detonator shell dot character identifying method solves the problem of bad detonator shell character identifying effect. The detonator shell dot character identifying method can also be used for identifying product labels, license number, print documents and the like, and the detonator shell dot character identifying method has advantages of broad application prospect and convenience in implementation on system modules.

Description

technical field [0001] The invention belongs to the field of pattern recognition, in particular to the recognition of dot matrix characters, in particular to a dot matrix character recognition method for a detonator casing. Background technique [0002] As a flammable and explosive item, detonator poses a threat to production enterprises, surrounding residents and the environment. Once the detonator explodes, it not only involves the production safety of the enterprise itself, but also threatens the life safety of producers and users, which is likely to cause serious consequences. [0003] The code of the detonator is the basis for the effective management of the detonator. Only by coding each detonator can it be convenient to record its specific use. Therefore, the code of the detonator must be unique. In the specific management process of detonators, extracting detonator codes and studying its character recognition methods are necessary means for effective management of d...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/20
CPCG06V30/2247G06V30/1478G06V30/293G06F18/2453
Inventor 王肖霞杨风暴彭智浩冯裴裴王志社
Owner ZHONGBEI UNIV
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