Method for real-time detection of printing quality of special spectrum anti-counterfeiting label
A technology of anti-counterfeiting marks and printing quality, applied in printing, image data processing, instruments, etc., can solve problems such as indistinguishability and influence of follow-up operations, and achieve the effect of printing quality and control
Active Publication Date: 2016-08-24
南县好彩印务有限公司
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Problems solved by technology
Due to the characteristics of carbon-containing colorless ink, it cannot be distinguished by conventional equipment such as the naked eye and a magnifying glass
If there are quality defects in the printed anti-counterfeiting label, it will affect its subsequent operation
Method used
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[0031] The invention provides a method for real-time detection of the printing quality of a special spectrum anti-counterfeit label, comprising the following steps:
[0032] Synchronously set the rotation speed of the production line roller and the acquisition frequency of the industrial camera;
[0033] The image processing system performs image segmentation and binarization processing on the received anti-counterfeiting label image, so as to make the outline and information points in each image area block segmented from the anti-counterfeiting label image clearer;
[0034] When more than half of the image area blocks in the anti-counterfeit mark image can be successfully decoded, it is determined that the printing quality of the anti-counterfeit mark corresponding to the anti-counterfeit mark image is qualified.
[0035] Such as figure 1 As shown, the specific steps of the above method are as follows:
[0036] S1. Initialize the device and data.
[0037] Specifically, the...
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The invention provides a method for detecting the printing quality of special spectral anti-fake mark in real time. The method includes the following steps that the rotating speed of a rolling shaft of a production line and the acquisition frequency of an industrial camera are arranged to be synchronous; an image processing system performs image segmentation and binarization processing on a received anti-fake mark image so that the contour and information points in each image area block obtained through segmentation of the anti-fake mark image can be clearer; when more than half of the image area blocks in the anti-fake mark image can be successfully decoded, it is judged that the printing of the anti-fake mark corresponding to the anti-fake mark image is qualified. With the method, the anti-fake mark made of special spectral ink can be detected so that the printing quality of the anti-fake mark can be analyzed and judged in real time, when the printing of the anti-fake mark is disqualified, the corresponding anti-fake mark can be marked, and therefore the printing quality of the anti-fake mark can be controlled.
Description
technical field [0001] The invention relates to a method for detecting the quality of an anti-counterfeit mark, in particular to a method for real-time detection of the printing quality of a special spectral anti-counterfeit mark. Background technique [0002] At present, special spectral anti-counterfeiting marks are mainly implanted on the surface of objects by printing, coding, etc., by carbon-containing colorless inks that can absorb infrared spectra. Due to the characteristics of carbon-containing colorless inks, it cannot be distinguished by conventional equipment such as the naked eye and a magnifying glass. If there are quality defects in the printed anti-counterfeiting label, it will affect its subsequent operation. [0003] Therefore, in order to solve the above problems, there is an urgent need for a method capable of detecting the printing quality of special spectral anti-counterfeiting labels. Contents of the invention [0004] Aiming at the deficiencies in ...
Claims
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IPC IPC(8): G06T7/00B41J3/44
Inventor 姚为万宏宇
Owner 南县好彩印务有限公司