CN109668893A - A kind of quantitative detecting method and device of Paper or cardboard printing floating coefficient - Google Patents
A kind of quantitative detecting method and device of Paper or cardboard printing floating coefficient Download PDFInfo
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- CN109668893A CN109668893A CN201710954372.1A CN201710954372A CN109668893A CN 109668893 A CN109668893 A CN 109668893A CN 201710954372 A CN201710954372 A CN 201710954372A CN 109668893 A CN109668893 A CN 109668893A
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- Prior art keywords
- paper
- cardboard
- picture
- printing
- floating coefficient
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Signal Processing (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
The invention discloses a kind of quantitative detecting method of Paper or cardboard printing floating coefficient, include the following steps: to provide a Paper or cardboard, the Paper or cardboard includes a printing surface；Image scanning is carried out to the printing surface, obtains scanned picture；Gray value standard deviation is analyzed the printing zone in the scanned picture and is calculated, thus the floating coefficient of Paper or cardboard described in quantitative reaction.The present invention analyzes by using objective tool, such as scanning means, image analysis apparatus etc. and calculates paper printing floating coefficient.Due to using software analysis that artificial vision is replaced to determine in entire analytic process, the evaluation result obtained not will receive the influence of the not objective factor such as experience and environment of people itself.And the assessment result of this quantification, facilitate accumulation and record data, can be widely applied to judgement of paper plant's high-speed paper machine scene quality control to printing floating coefficient.
Description
Technical field
The present invention relates to the detections of Paper or cardboard press quality in papermaking, and in particular to a kind of pair of Paper or cardboard prints floating
The method of the quantitative detection of coefficient and used device.
Background technique
For coating paper after printing, trace floating coefficient is a kind of failure often to go wrong.So-called trace floating system
Number refers to the ink ink film after printing, and there are a kind of printing trouble that uneven color is distributed, usual spots in a strip shape or cellular
Spot is for floating.The fewer of performance after paper print is evaluated to print floating coefficient as index at present, and is used substantially
The subjective determination method that vision determines, the judgement result of the method is affected by subjectivity, nor can be carried out quantitative comment
Valence.
Summary of the invention
The object of the present invention is to provide a kind of Paper or cardboard printing quantitative detecting methods of floating coefficient and used
Device, to solve drawbacks described above existing for background technique.
The first aspect of the present invention is to provide a kind of quantitative detecting method of Paper or cardboard printing floating coefficient, specifically logical
Cross what following technical solution was realized:
A kind of quantitative detecting method of Paper or cardboard printing floating coefficient, includes the following steps:
A Paper or cardboard is provided, the Paper or cardboard includes a printing surface；
Image scanning is carried out to the printing surface, obtains scanned picture；
Gray value standard deviation is analyzed the printing zone in the scanned picture and is calculated, thus quantitative reaction institute
State the floating coefficient of Paper or cardboard.
The step of printing zone is analyzed and calculated as a preferred technical solution, includes: public using calculating
Formula: (1 gray value standard deviation of selected areas+selected areas, 2 gray value standard deviation+...+selected areas n gray value standard
Deviation)/n, calculate the printing floating coefficient that gained numerical response goes out the Paper or cardboard.
Technical solution as a further preference, the selected areas are uniformly distributed in the printing zone, and n is not less than
4。
Before the step of printing zone is analyzed and is calculated as a preferred technical solution: to comprising described
The scanned picture of printing zone is cut, using acquisition to cut out picture inclined as being analyzed and calculating gray value standard
Difference, to judge picture used in the Paper or cardboard floating coefficient.
As further preferred technical solution, the step of scanned picture of the printing zone is cut includes: to adopt
The picture to be analyzed needed for acquisition is cut with scanned picture of the image making software to the printing zone.
As further preferred technical solution, the scanned picture of the printing zone is advanced before being analyzed
Gray proces remove the color in picture, only retain the comparison of light and shade of gray scale.
The second aspect of the present invention is to provide a kind of quantitative testing device of Paper or cardboard printing floating coefficient comprising:
Input unit: for inputting a Paper or cardboard, the Paper or cardboard includes a printing surface；
The scanning means being connected with the input unit: for scanning the Paper or cardboard comprising printing surface, scanning figure is obtained
Piece；
The image analysis apparatus being connected with the scanning means: for analyzing printing zone described in the scanned picture
Gray value standard deviation, the floating coefficient of Paper or cardboard is judged with this.
It as a preferred technical solution, further include picture editor's dress between the scanning means and image analysis apparatus
It sets, for cutting out the scanned picture comprising the printing zone, cuts out picture to obtain, the picture of cutting out is as image analysis
Picture used when device analysis.
Picture is carried out gray proces by described image analytical equipment as a preferred technical solution, it is handled after picture
Picture used when as image analysis apparatus analysis.
The beneficial effects of the present invention are: by using objective tool, such as scanning means, image analysis apparatus etc. are analyzed
And calculate paper printing floating coefficient.Due to using software analysis that artificial vision is replaced to determine in entire analytic process, because
This evaluation result obtained not will receive the influence of the not objective factor such as experience and environment of people itself.And this quantification
Assessment result facilitates accumulation and record data, can be widely applied to paper plant's high-speed paper machine scene quality control to printing floating coefficient
Determine.
Detailed description of the invention
Fig. 1 is the connection relationship diagram of 1 cardboard printing floating quantifies detection device of the embodiment of the present invention.
Fig. 2 is the connection relationship diagram of 2 paper printing floating quantifies detection device of the embodiment of the present invention.
Specific embodiment
The present invention is illustrated below by specific embodiment, but is not intended to limit the present invention.
Embodiment 1
The printing floating quantifies detection method of cardboard comprising following steps:
1) cardboard is provided, the cardboard includes a printing surface；
One cardboard is provided, cardboard one side is printed using IGT floating component, ink is blue.
2) include that the printing zone carries out image scanning to the cardboard, obtain scanned picture.In the present embodiment, it adopts
The cardboard is scanned with scanner.
3) picture is subjected to gray proces using picture editor's device；
The scanned picture comprising the printing zone of acquisition is imported into picture editor's device and carries out gray proces, example
It such as imported into Photoshop, the color of picture is removed, only retain the comparison of light and shade of gray scale.
4) printing zone is analyzed and is calculated, calculate the standard deviation of gained gray value, the amount of deflection, that is, anti-
The floating coefficient of the Paper or cardboard should be gone out.
The corresponding cardboard printing floating quantifies detection device of this method is as shown in Figure 1, successively include:
Input unit: for inputting a Paper or cardboard, the Paper or cardboard includes a printing surface；
The scanning means being connected with the input unit: for scanning the Paper or cardboard comprising printing surface, scanning figure is obtained
Piece；
The image analysis apparatus being connected with the scanning means: for analyzing printing zone described in the scanned picture
Gray value standard deviation, the floating coefficient of Paper or cardboard is judged with this.
Embodiment 2
The quantitative detecting method of paper floating coefficient comprising following steps:
1) paper is provided, the paper includes a printing surface；
One paper is provided, which is printed using IGT floating component, ink is blue.
2) include that the printing zone carries out image scanning to the paper, obtain scanned picture.In the present embodiment, it adopts
The paper is scanned with scanner.
3) picture is subjected to gray proces using picture editor's device；
The scanned picture comprising the printing zone of acquisition is imported into picture editor's device and is cut, after cutting
Gray proces are carried out again, such as are imported into Photoshop, then longitudinal 5 equal parts of picture remove the color of picture after cutting
Fall, only retains the comparison of light and shade of gray scale.
4) printing zone is analyzed and is calculated, using calculation formula: (1 gray value standard deviation of selected areas+
2 gray value standard deviation of selected areas+... 5 gray value standard deviation of+selected areas)/5, it calculates gained numerical response and goes out institute
State paper is for floating coefficient.
The corresponding paper printing floating quantifies detection device of this method is as shown in Fig. 2, successively include:
Input unit: for inputting a Paper or cardboard, the Paper or cardboard includes a printing surface；
The scanning means being connected with the input unit: for scanning the Paper or cardboard comprising printing surface, scanning figure is obtained
Piece；
The picture editor's device being connected with the scanning means, for cutting out the scanning figure comprising the printing zone
Piece cuts out picture to obtain, described to cut out picture used when picture is analyzed as image analysis apparatus.
The image analysis apparatus being connected with picture editor's device: described printing described in picture is cut out for analyzing
The gray value standard deviation in region judges the floating coefficient of Paper or cardboard with this.
The above shows and describes the basic principle, main features and advantages of the invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (9)
1. a kind of quantitative detecting method of Paper or cardboard printing floating coefficient, which comprises the steps of:
A Paper or cardboard is provided, the Paper or cardboard includes a printing surface；
Image scanning is carried out to the printing surface, obtains scanned picture；
Gray value standard deviation is analyzed the printing zone in the scanned picture and is calculated, thus paper described in quantitative reaction
Or the floating coefficient of cardboard.
2. the method as described in claim 1, which is characterized in that the step of printing zone is analyzed and calculated packet
It includes: using calculation formula: (1 gray value standard deviation of selected areas+selected areas, 2 gray value standard deviation+...+institute constituency
Domain n gray value standard deviation)/n, calculate the printing floating coefficient that gained numerical response goes out the Paper or cardboard.
3. method according to claim 2, which is characterized in that the selected areas is uniformly distributed in the printing zone, n
Not less than 4.
4. the method as described in claim 1, which is characterized in that the step of printing zone is analyzed and is calculated it
Before: the scanned picture comprising the printing zone is cut, acquisition is cut out into picture as being analyzed and counted
Gray value standard deviation is calculated, to judge picture used in the Paper or cardboard floating coefficient.
5. method as claimed in claim 4, which is characterized in that the step of scanned picture of the printing zone is cut packet
It includes: image making software being used to be cut the picture to be analyzed needed for acquisition to the scanned picture of the printing zone.
6. method as claimed in claim 4, which is characterized in that the scanned picture of the printing zone before being analyzed,
Advanced gray proces remove the color in picture, only retain the comparison of light and shade of gray scale.
7. a kind of quantitative testing device of Paper or cardboard printing floating coefficient, characterized by comprising:
Input unit: for inputting a Paper or cardboard, the Paper or cardboard includes a printing surface；
The scanning means being connected with the input unit: for scanning the Paper or cardboard comprising printing surface, scanned picture is obtained；
The image analysis apparatus being connected with the scanning means: for analyzing the ash of printing zone described in the scanned picture
Angle value standard deviation judges the floating coefficient of Paper or cardboard with this.
8. the quantitative testing device of Paper or cardboard printing floating coefficient as claimed in claim 7, which is characterized in that swept described
It further include picture editor's device between imaging apparatus and image analysis apparatus, for cutting out the scanning figure comprising the printing zone
Piece cuts out picture to obtain, described to cut out picture used when picture is analyzed as image analysis apparatus.
9. the quantitative testing device of Paper or cardboard printing floating coefficient as claimed in claim 7, which is characterized in that described image
Picture is carried out gray proces by analytical equipment, it is handled after picture picture used when being analyzed as image analysis apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710954372.1A CN109668893A (en) | 2017-10-13 | 2017-10-13 | A kind of quantitative detecting method and device of Paper or cardboard printing floating coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710954372.1A CN109668893A (en) | 2017-10-13 | 2017-10-13 | A kind of quantitative detecting method and device of Paper or cardboard printing floating coefficient |
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| Publication Number | Publication Date |
|---|---|
| CN109668893A true CN109668893A (en) | 2019-04-23 |
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| CN201710954372.1A Pending CN109668893A (en) | 2017-10-13 | 2017-10-13 | A kind of quantitative detecting method and device of Paper or cardboard printing floating coefficient |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997025211A1 (en) * | 1996-01-05 | 1997-07-17 | Weavexx Corporation | System for evaluating print quality for a sheet |
| US20030214648A1 (en) * | 2002-05-16 | 2003-11-20 | Boise Cascade Corporation | Method and apparatus for determining out-of-plane defects in a paper sample |
| CN102759511A (en) * | 2012-07-05 | 2012-10-31 | 宁波亚洲浆纸业有限公司 | Quantification method for ink absorption detection results of paper boards |
| CN103454282A (en) * | 2013-08-30 | 2013-12-18 | 陕西科技大学 | Gray-gradient-based measurement method of mottle of printed product |
| CN104034424A (en) * | 2014-05-30 | 2014-09-10 | 杭州电子科技大学 | Method for detecting and analyzing printing quality of decorative paper |
| CN104568949A (en) * | 2014-12-23 | 2015-04-29 | 宁波亚洲浆纸业有限公司 | Method and device for quantitative detection of ink explosion degree of paperboard |
| CN106226245A (en) * | 2016-07-08 | 2016-12-14 | 滁州卷烟材料厂 | tipping paper printing uniformity quantization method |
-
2017
- 2017-10-13 CN CN201710954372.1A patent/CN109668893A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997025211A1 (en) * | 1996-01-05 | 1997-07-17 | Weavexx Corporation | System for evaluating print quality for a sheet |
| US20030214648A1 (en) * | 2002-05-16 | 2003-11-20 | Boise Cascade Corporation | Method and apparatus for determining out-of-plane defects in a paper sample |
| CN102759511A (en) * | 2012-07-05 | 2012-10-31 | 宁波亚洲浆纸业有限公司 | Quantification method for ink absorption detection results of paper boards |
| CN103454282A (en) * | 2013-08-30 | 2013-12-18 | 陕西科技大学 | Gray-gradient-based measurement method of mottle of printed product |
| CN104034424A (en) * | 2014-05-30 | 2014-09-10 | 杭州电子科技大学 | Method for detecting and analyzing printing quality of decorative paper |
| CN104568949A (en) * | 2014-12-23 | 2015-04-29 | 宁波亚洲浆纸业有限公司 | Method and device for quantitative detection of ink explosion degree of paperboard |
| CN106226245A (en) * | 2016-07-08 | 2016-12-14 | 滁州卷烟材料厂 | tipping paper printing uniformity quantization method |
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Application publication date: 20190423 |
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