Ceramic wall and floor tile surface defect detection device and method based on multi-feature information fusion

Abstract

The invention relates to a ceramic wall and floor tile surface defect detection device and method based on multi-feature information fusion. The method is characterized by adopting two brightness-adjustable LED white backlight sources to illuminate the ceramic tile surface in an illuminating mode of being inclined to the tile surface at a low angle to obtain a ceramic wall and floor tile with uniform light distribution; collecting image data of the ceramic wall and floor tile through a CCD camera; extracting a suspected defect area of the image data; adjusting the brightness, height and angleof the LED white backlight sources and controlling the height of the CCD camera; collecting image data of a clearer suspected defect area; and finishing multi-feature calculation and information fusion through a fuzzy classifier based on a fuzzy C-mean algorithm, and identifying the defect type corresponding to the suspected defect area. The method can fuse various characteristic quantities, distributed in a grayscale feature space and a morphological feature space, of the suspected defect area of the ceramic wall and floor tile, can accurately and effectively determine existence of the defectand the type of the defect, and is good in defect detection effect.

Description

technical field [0001] The invention relates to the field of defect detection, in particular to a device and method for detecting surface defects of ceramic wall and floor tiles with multi-feature information fusion. Background technique [0002] The surface defect of ceramic wall and floor tiles is one of the main factors affecting its quality, so the problem of defect detection of ceramic wall and floor tiles is particularly important. [0003] There are many kinds of defects on the surface of ceramic wall and floor tiles, and the characteristic quantities of these defects are scattered in the characteristic spaces such as gray-scale characteristic space and morphological characteristic space. Most of the detection methods currently proposed by scholars for these defects use a single feature quantity for identification in a single feature space. The identification range is limited, and only a few defects can be identified, and the detection effect for various ceramic wall ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-feature information fusion ceramic wall and floor tile surface defect detection device and its method to solve the problem of low detection accuracy of ceramic wall and floor tile surface defects, which can integrate suspected areas of ceramic wall and floor tiles distributed in grayscale features Various eigenvalues ​​of spatial and morphological feature spaces, so as to accurately and effectively determine the presence and type of defects

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