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A method and system for detecting the thickness of a zipper

A detection method and zipper technology, which is applied in image analysis, image enhancement, instruments, etc., can solve problems such as coordinate value offset and affect the accuracy of visual measurement results, so as to reduce standard deviation, improve industrial application value, and solve measurement errors. accurate effect

Active Publication Date: 2022-04-01
CHINA JILIANG UNIV
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Problems solved by technology

However, in the process of visual measurement of the thickness of the zipper, due to the elastic characteristics of the zipper itself, the vibration state of the production equipment will cause the self-vibration of the zipper under test, which will cause the coordinate values ​​​​of each part of the zipper under test to shift in the image, and this This offset can affect the accuracy of visual measurement results

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  • A method and system for detecting the thickness of a zipper
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  • A method and system for detecting the thickness of a zipper

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[0021] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings, but these embodiments do not limit the present invention, those skilled in the art make structural, method, or functional changes based on these embodiments All are included in the scope of protection of the present invention.

[0022] Such as figure 1 In the illustrated embodiment of the present invention, the present invention provides a method for detecting the thickness of a zipper, the method comprising:

[0023] S1. Collect the measurement images of the tested zipper in two adjacent frames, and the collection time corresponds to t respectively 1 moment and t 2 time, choose t 1 The measured image at each moment is used as the image to be compensated;

[0024] S2. Obtain coordinate information of all edge points on the left and right sides of a single zipper in the image to be compensated;

[0025] S3. Perform a motion compens...

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Abstract

The invention discloses a method for detecting the thickness of a zipper. The method comprises: collecting two adjacent frames of measurement images of the zipper to be tested, and selecting t 1 The measured image at the moment is used as the image to be compensated; the coordinate information of all edge points on the left and right sides of the zipper in the image to be compensated is obtained; the motion compensation algorithm is performed on the coordinate information of all edge points on the left and right sides of the zipper to obtain the corrected Coordinate information of all edge points on the left and right sides; respectively fitting the corrected coordinate information of all edge points on the left and right sides to two parallel straight lines on the left and right, and calculating the distance information between the two parallel straight lines on the left and right; According to the distance information, the thickness dimension of the tested slide fastener is calculated. Correspondingly, the invention also discloses a detection system for the thickness dimension of the slide fastener. The invention realizes the accurate measurement of the thickness dimension of the zipper under the condition of vibration.

Description

technical field [0001] The invention relates to the technical field of zipper detection, in particular to a method and system for detecting the thickness of a zipper. Background technique [0002] Zippers are common accessories on clothing and bags. Its thickness dimension is one of the important basis for evaluating the quality of zipper. Machine vision can greatly improve the automation of production, and the detection method using machine vision can greatly improve production efficiency and automation of production. In the prior art solutions, machine vision technology is usually used to detect the quality of the zipper. However, in the process of visual measurement of the thickness of the zipper, due to the elastic characteristics of the zipper itself, the vibration state of the production equipment will cause the self-vibration of the zipper under test, which will cause the coordinate values ​​​​of each part of the zipper under test to shift in the image, and this Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/60G06T7/194G06T7/136G06T7/13G06T7/11G06F17/13
CPCG06T7/60G06T7/136G06T7/11G06T7/194G06T7/13G06F17/13G06T2207/20032G06T2207/10004
Inventor 洪涛程诚
Owner CHINA JILIANG UNIV
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