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Image Correction Method for Uneven Cloth Speed ​​of Automatic Cloth Inspection Machine Based on Linear Interpolation Method

A linear interpolation method and image correction technology, which is used to correct image distortion caused by uneven cloth running of automatic cloth inspection machine, correction of image distortion caused by uneven cloth running of automatic cloth inspection machine, and uneven running speed of automatic cloth inspection machine. In the field of image correction, it can solve the problems of increasing the false detection rate and missed detection rate, changing the shape characteristics of defects, and changing the normal texture of fabrics, etc., to achieve the effect of correcting image distortion, low computer computing load, and low memory consumption.

Inactive Publication Date: 2018-10-23
DONGHUA UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The stretching distortion of the fabric surface image not only changes the normal texture shape of the fabric, but also changes the appearance characteristics of the defects, which makes it difficult to identify and classify the defects, thus increasing the false detection rate and missed detection rate

Method used

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  • Image Correction Method for Uneven Cloth Speed ​​of Automatic Cloth Inspection Machine Based on Linear Interpolation Method
  • Image Correction Method for Uneven Cloth Speed ​​of Automatic Cloth Inspection Machine Based on Linear Interpolation Method
  • Image Correction Method for Uneven Cloth Speed ​​of Automatic Cloth Inspection Machine Based on Linear Interpolation Method

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Embodiment Construction

[0039] The present invention will be further described below in combination with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0040] In the method for image correction of uneven cloth running speed of the automatic cloth inspection machine based on the linear interpolation method of the present invention, when inspecting the cloth, the camera line scans to obtain the fabric image and converts it into a grayscale image. The specific steps are as follows:

[0041] (1) if figure 1 As shown, the line scan camera 1 scans the fabric to obtain an image...

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Abstract

The invention relates to an image correction method for non-uniform cloth feeding speed of automatic cloth inspecting machine based on a linear interpolation method, and is used for correcting image distortion caused by non-uniform cloth feeding speed of the automatic cloth inspecting machine. Row sampling lines are equidistantly divided on a fabric surface corresponding to an image along a radial direction again according to cloth feeding speed set by the system to act as the row sampling lines of the corrected image; and linear interpolation is performed according to the spatial relation between the corrected sampling points and original sampling points on the fabric surface so that the gray scale value of each pixel on the corrected image is acquired. The method is low in the required computation load and low in memory consumption and can be applied to real-time processing so as to be applied to subsequent defect identification and processing of the automatic cloth inspecting machine.

Description

technical field [0001] The invention belongs to the technical field of automatic cloth inspection, and relates to a method for correcting image distortion caused by uneven cloth running of an automatic cloth inspection machine, in particular to an image correction method for uneven cloth running speed of an automatic cloth inspection machine based on a linear interpolation method. Image distortion caused by uneven cloth running of automatic cloth inspection machine. Background technique [0002] At present, the detection of fabric defects is mostly done by traditional manual detection methods, which are limited by the subjective factors of the inspectors and some objective factors. low efficiency. With the rising cost of labor, the demand for automatic cloth inspection equipment is increasing. Foreign companies such as BARCO and Swiss Uster have launched commercialized automatic cloth inspection machines, but due to high prices and variety adaptability problems, domestic a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T7/00G01N21/88G01N21/898
CPCG01N21/8851G01N21/8983G01N2021/8887G01N2021/8909G06T5/006G06T7/0004G06T2207/30132
Inventor 万贤福陈俊琰汪军李立轻孔祖坚李兵崔桂新许增慧
Owner DONGHUA UNIV
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