Cigarette packaging material color difference detection method based on digital image processing

Abstract

The invention provides a cigarette packaging material color difference detection method based on digital image processing. The method comprises the following steps of setting a CCD camera to photograph a cigarette packaging material to obtain a full-color image of an outer package; carrying out region division of the full-color image according to positions, and carrying out digital image processing of a Lab color mode on each region; performing color difference calculation of the colors of all the areas, comparing color difference values with a standard sample, and if the color difference values are larger than a set threshold value, that the colors of the cigarette packaging materials are different is judged. The method is advantaged in that a problem of poor detection effect on complex packages such as complex colors, high-gloss materials, silk-screen printing, letterpress printing and the like due to the fact that an existing cigarette packaging material is detected by adopting a colorimeter is solved, detection efficiency of cigarette packaging can be improved, and detection cost of cigarette packaging is reduced.

Description

technical field [0001] The invention relates to the technical field of cigarette package appearance quality inspection, in particular to a method for detecting color difference of cigarette packaging materials based on digital image processing. Background technique [0002] The appearance quality of cigarette packaging directly bears the external image and anti-counterfeiting function of cigarette products, determines the first impression of cigarette final consumers on cigarette products, and affects consumers' choice of cigarette products to a certain extent. Cigarette consumers' preference for cigarette products requires that the internal quality and packaging quality of cigarettes be consistent. Color difference is an important indicator for the quality inspection of cigarette packaging materials, which directly affects the packaging quality and corporate image of cigarette products. one of the difficulties. At present, to evaluate the consistency of cigarette packaging...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for detecting the color difference of cigarette packaging materials based on digital image processing, which solves the problem that the existing cigarette packaging materials are detected by a color difference meter, and the detection effect of complex packaging such as complex colors, high-gloss materials, silk screen printing and embossing is poor. It can improve the detection efficiency of cigarette packaging and reduce the detection cost of cigarette packaging

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