A detection method for decorative wallpaper defects based on template matching
A defect detection and template matching technology, applied in character and pattern recognition, image analysis, image enhancement, etc., to achieve the effect of improving accuracy and speed, ensuring accurate recognition, and strong practicability
Active Publication Date: 2022-06-24
武汉市融科优品装饰材料有限公司
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[0005] The invention provides a method for detecting defects of decorative wallpaper based on template matching to improve the accuracy of defect detection, so as to solve the existing problems
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[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0044] An embodiment of a method for detecting defects in decorative wallpaper based on template matching of the present invention, the method includes:
[0045] S1. Obtain the wallpaper cycle template image and the wallpaper image to be tested, set the weights for converting multiple groups of images into grayscale images, and convert the wallpaper cycle template image into a template grayscale image according to each group of weights...
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The invention relates to a method for detecting defects of decorative wallpaper based on template matching, which comprises acquiring a wallpaper period template image and a wallpaper image to be tested, and then adjusting the weight of the image to a grayscale image to obtain the first principal component of the wallpaper period template image The maximum projection variance, according to the maximum projection variance to determine its corresponding final weight and the final direction of the first principal component, and then through the first projection value of the template grayscale image in the direction of the final first principal component and the grayscale image of the wallpaper to be tested in Finally, the template image is determined by the second projection value in the direction of the first principal component, and the defect area is determined by template matching between the wallpaper image to be tested and the corresponding template image. The method of the present invention improves the accuracy and speed of template matching, thereby ensuring The precise identification of the defect location is highly practical and worthy of popularization.
Description
technical field [0001] The invention relates to the technical field of image detection, in particular to a method for detecting defects of decorative wallpaper based on template matching. Background technique [0002] Decorative wallpapers are beautiful and environmentally friendly, and have gradually replaced traditional paints. With the increase in the demand for wallpapers, consumers' requirements for product quality have also increased. Due to mechanical aging and other reasons, the produced wallpaper products contain defects, and the entry of unqualified wallpaper products into the market will cause huge losses to manufacturers, which will not only affect the economic benefits of manufacturers, but also reduce the market reputation of manufacturers. Therefore, for the production line product testing is very important. [0003] For the detection of wallpaper defects, manual detection is still mainly used, that is, the product is detected by human eyes. This primitive m...
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IPC IPC(8): G06T7/00G06T7/49G06K9/62G06V10/77
CPCG06T7/0002G06T7/49G06T2207/10024G06F18/2135
Inventor 余义平
Owner 武汉市融科优品装饰材料有限公司