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Steel seal online detection system and method based on color CCD

A detection system and stencil technology, applied in the field of stencil online detection system based on color CCD, can solve the problem of inability to analyze and process stencil color information, and achieve the effect of reducing labor cost and improving accuracy

Pending Publication Date: 2020-10-13
CHINA TOBACCO SICHUAN IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a color CCD-based on-line detection system and method for steel stamps to solve the problem that the prior art cannot analyze and process the color information of steel stamps

Method used

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  • Steel seal online detection system and method based on color CCD
  • Steel seal online detection system and method based on color CCD
  • Steel seal online detection system and method based on color CCD

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] see Figure 1-2 , an on-line detection system for stencils based on a color CCD, including an image acquisition module 1, a color correction module 2, a color space conversion module 3, a multiple search and positioning module 4, a print separation module 5, a full-format detection module 6, and a color difference detection module 7. BLOB analysis output module8.

[0053] The image acquisition module 1 includes a line-scanning color CCD, a bright white LED light source and an image acquisition card. The line-scanning color CCD is used to acquire images, and the image acquisition card is used to upload the acquired images, and transmit them to the color correction module 2 through a callback function for analytical processing.

[0054] In the system imaging process, different machines and different cameras lead to different light environments, and each machine needs a separate template to adapt to different light environments. To this end, the color correction module 2...

Embodiment 2

[0071] see Figure 1-3 , a kind of online detection method of steel stamp based on color CCD, this detection method comprises the steps:

[0072] Step S101, collect images of double cigarettes on cigarette paper; specifically, establish a standard image model, select the double cigarette area in the collected image, divide it into small areas, set the level of each printed area, and apply it to the full format to obtain a template image and parameters;

[0073] Step 102, color correction and LAB space transformation of the double cigarette image; specifically, color correction processing is performed on the collected image, and the contrast within a certain gray value range is selectively enhanced, the main idea of ​​which is to define the histogram; The color correction image is converted to Lab space, which is convenient for quantitative analysis of color difference difference;

[0074] The specific steps of the histogram specification are as follows (here M and N are the ...

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Abstract

The invention discloses a steel seal online detection system and method based on a color CCD. The steel seal online detection system comprises an image acquisition module, a color correction module, acolor space conversion module, a multi-search positioning module, a printing frequency separation module, a full-width detection module, a color difference detection module and a BLOB analysis outputmodule. Accuracy of the steel seal detection system is improved through multiple positioning and color detection algorithms, and the system and the method can be applied to steel seals with complex patterns, textures, characters and colors; then, a production condition of cigarette paper can be monitored in real time in a cigarette paper printing process; and then, a problem that manual detectionis needed in a traditional detection method is solved, and labor cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of on-line inspection systems for cigarette paper, in particular to an on-line inspection system and method for steel stamps based on a color CCD. Background technique [0002] Cigarette paper is an important part of the cigarette production process. The cigarette paper fixes the shredded tobacco and then connects it to the mouth rod to form a cigarette. It controls the burning speed during the burning process of the cigarette, and also affects the appearance and taste of the cigarette. Cigarette manufacturers at home and abroad print a unique mark composed of words and patterns on their cigarettes, which is called a brand stamp. At the same time, some cigarettes are also printed with a code consisting of letters and numbers, which is called a code stamp. The cigarette steel seal used to indicate the brand and trademark of the cigarette is printed on the cigarette, which reflects the brand characteristics o...

Claims

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Application Information

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IPC IPC(8): G01N21/88G01N21/25A24C5/32G01N21/956G06K9/32G06K9/46G06K9/62G06T7/00G06T7/11G06T7/136
CPCG01N21/8851G01N21/95607G01N21/251A24C5/32G06T7/001G06T7/11G06T7/136G01N2021/8854G06T2207/10024G06T2207/30144G06T2207/10004G06V20/62G06V10/44G06F18/24
Inventor 谢光桥李学敏赵清胡伟汪建兵邹庆元王立春刘和平王强周彦
Owner CHINA TOBACCO SICHUAN IND CO LTD
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