Honeycomb paper core defect detection method based on machine vision

A technology of honeycomb paper core and defect detection, applied in the direction of optical testing defects/defects, instruments, measuring devices, etc., can solve the problems affecting the ability of honeycomb paperboard to withstand collision, irregular cavity structure, manual defect detection errors, etc.

Active Publication Date: 2019-08-09
CENT SOUTH UNIV
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Problems solved by technology

In the production process of honeycomb paperboard, due to improper stretching and various complex industrial factors, it is very easy to produce defects, such as large-area cavities, irregular cavity structures, continuous fractures, etc., which affect the ability of honeycomb paperboard to withstand collisions , is an unavoidable problem in the production process of honeycomb paperboard
In the e

Method used

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  • Honeycomb paper core defect detection method based on machine vision
  • Honeycomb paper core defect detection method based on machine vision
  • Honeycomb paper core defect detection method based on machine vision

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Embodiment Construction

[0038] 1. Mobilize the production equipment at the honeycomb paper core industrial production site to produce a large number of honeycomb paper core samples, build a visual platform at the industrial site, fix the camera, and give a certain amount of constant lighting, set the collection size to a long strip image, The width of the picture is 2400, the height is 300, adjust the height so that the width direction of the camera just captures the overall width of the production line, that is, captures the entire width information of the tape entrance position, and the height of the picture is 300, which is used as the production line for subsequent analysis. The unit of measure for pacing. Carry out equidistant segmentation (divided into 8 blocks) for the collected long strip pictures, that is, generate a set of [300,300] images, manually check whether there are defects in the pictures, if there are defects, use labelImg to mark the defect position, and calibrate Good pictures ar...

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Abstract

The invention discloses a honeycomb paper core defect detection method based on machine vision. Aims at various defect problems generated during a honeycomb paper core production process, the method comprises the following steps of acquiring a honeycomb paper core picture on a production site; detecting the defects in the honeycomb paper core by adopting an SSD deep neural network; judging the defect category of the honeycomb paper core and outputting the specific position, then using a machine vision algorithm for rapid reinspection to prevent the false inspection, finally transmitting an obtained result to the honeycomb paper core defect repairing system, and providing a correct feedback signal to realize the automatic repairing of the honeycomb paper core defects. The method detects thehoneycomb paper core defects in real time through the deep learning model and the machine vision algorithm, can provide the feedback information for an automatic defect repairing system during the honeycomb paper core production process, has the advantages of being accurate in recognition, accurate in positioning and fast in recognition speed, and can meet the requirement for honeycomb paperboardproduction automation.

Description

technical field [0001] The invention relates to the field of image detection, in particular to a machine vision-based defect detection method for honeycomb paper cores. Background technique [0002] Honeycomb paper is made according to the principle of honeycomb structure in nature. It connects the base paper cut into strips and stacked together into countless hollow three-dimensional regular hexagons to form a whole force-bearing part, and in it It is a new type of environmental protection and energy-saving material with a sandwich structure made of double-sided adhesive paper. It has high mechanical strength and can withstand various collisions and falls during transportation. It is mostly used for packaging and transportation of various precision devices, fragile devices and even military devices, and has strong industrial applicability. In the production process of honeycomb paperboard, due to improper stretching and various complex industrial factors, it is very easy t...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/11G06T7/136G06T7/62G06F16/51G06F16/587G01N21/95G01N21/88
CPCG06T7/0004G06T7/11G06T7/136G06T7/62G06F16/51G06F16/587G01N21/9515G01N21/8851G06T2207/10004G06T2207/20081G06T2207/20164G06T2207/30108G01N2021/8854G01N2021/8861G01N2021/8887Y02P90/30
Inventor 彭辉方知涵付雷李雯
Owner CENT SOUTH UNIV
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