CN107478179A - Measure silk-screen area method - Google Patents
Measure silk-screen area method Download PDFInfo
- Publication number
- CN107478179A CN107478179A CN201710637485.9A CN201710637485A CN107478179A CN 107478179 A CN107478179 A CN 107478179A CN 201710637485 A CN201710637485 A CN 201710637485A CN 107478179 A CN107478179 A CN 107478179A
- Authority
- CN
- China
- Prior art keywords
- screen area
- silk
- sample
- fixed plate
- scan image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/28—Measuring arrangements characterised by the use of optical techniques for measuring areas
Abstract
The invention discloses one kind to measure silk-screen area method, comprises the following steps：Step S10, the scan image of sample is pre-processed；Step S20, the pixel quantity of the scanning pattern is obtained based on pretreated scan image；Step S30, silk-screen area is calculated based on pixel quantity.The present invention is improved in the prior art for the accuracy of silk-screen area measurement, and improves calculating speed.
Description
Technical field
The invention belongs to area measurement method field, more particularly to a kind of measurement silk-screen area method.
Background technology
At present, silk-screen generally refers to tag mark printed on industrial products, is a group common on industrial products
Into part, by the extruding of scraper plate during printing, ink is transferred to by the mesh of areas on stock, formed and original copy
The same picture and text.Screen printing technique continuous development is perfect, as an indispensable part in human lives.With existing
For screen printing technique constantly improve, silk-screen printing is especially suitable for applying in ultra-large type outer packing and product design decoration.Product
The area of silk-screen need to first be gone out when being packaged in silk-screen with survey tool manual calculations, distortion easily occurs in this computational methods, calculates knot
Fruit is not accurate.
Therefore, prior art is to be improved.
The content of the invention
It is a primary object of the present invention to propose a kind of measurement silk-screen area method, it is intended to which solution measures silk in the prior art
Print distortion, the inaccurate technical problem that area easily occurs.
In order to solve the above technical problems, the measurement silk-screen area method of the present invention, comprises the following steps：
Step S10, the scan image of sample is pre-processed；
Step S20, the pixel quantity of the scanning pattern is obtained based on pretreated scan image；
Step S30, silk-screen area is calculated based on pixel quantity.
Preferably, before the step S10, including step：
Step S1, sample is placed in the fixed plate of pre-set dimension；
Step S2, is scanned to fixed plate；
Preferably, the step S20 includes step：
Step S21, it is several partial images to divide pretreated scan image；
Step S22, the partial image is amplified with preset multiple；
Step S23, obtain the pixel quantity of partial image after each amplification.
Preferably, the step S10 includes step：
Step S11, judge that the image border in scan image whether there is gray areas；
Step S12, if gray areas be present, the gray areas is adjusted.
Preferably, in the step S1, the sample is fitted in the fixed plate, the side of the sample
The side of edge and fixed plate is separated by pre-determined distance.
The invention has the advantages that：
1st, areal calculation is carried out using by the pixel quantity of the scan image of altimetric image, improves accuracy.
2nd, it is fast compared to the hand dipping of prior art, this measuring method calculating speed.
3rd, the image that shape of product itself is not rule is directed to, effect is fine.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of first embodiment of the invention；
Fig. 2 is the schematic flow sheet of second embodiment of the invention；
Fig. 3 is the refinement schematic flow sheet of step S20 in first embodiment of the invention；
Fig. 4 is the step S10 of first embodiment of the invention refinement schematic flow sheet.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
With reference to figure 1, Fig. 1 is the schematic flow sheet of first embodiment of the invention.
As shown in figure 1, the measurement silk-screen area method of the present invention, comprises the following steps：
Step S10, the scan image of sample is pre-processed；
In the step S10 of the present embodiment, the scan image of sample is obtained, sample is usually the tag mark of finished product,
Can be hand-made or machine printing paper-like mark.For the calculating for pixel in subsequent step
It is more accurate, for the image in scan image outside unrelated color dot pre-process, pretreatment mode is included unrelated color dot
Deleted or unrelated color dot is subjected to albefaction, unrelated color dot generally refers to be more than predetermined threshold value with the aberration of color dot around it
Point.
Step S20, the pixel quantity of the scanning pattern is obtained based on pretreated scan image；
Step S30, silk-screen area is calculated based on pixel quantity.
In the present embodiment, after execution of step S10, frame selects the tested image border in pretreated scan image,
And the pixel quantity in the frame favored area by parsing the scan image for obtaining pretreatment, pixel quantity is then based on, profit
72 pixel this conversion relations are included with the position of 1 inch of length, carry out areal calculation.The present embodiment is compared to existing skill
Art, coordinated by scanning machine and terminal so that calculating speed is fast and accuracy is high, the identifier being particularly suitable for use on industrial products
Number printing, i.e. tag mark are generally irregular shape, but it is most of for flat it is this.
With reference to figure 2, Fig. 2 is the schematic flow sheet of second embodiment of the invention.
As shown in Figure 2, it is preferable that before the step S10, including step：
Step S1, sample is placed in the fixed plate of pre-set dimension；
Step S2, is scanned to fixed plate；
In the present embodiment, sample is fixed in the fixed plate of pre-set dimension, the fixed plate is square plate, presets chi
Very little is 1 meter, and expression is that the square length of side is 1 meter, i.e., is placed on sample in the fixed plate that area is 1 square metre, so
Fixed plate is scanned by scanning machine afterwards, can obtain the scanning pattern that sample is placed in fixed plate.The present embodiment makes
Obtaining sample can more steadily be scanned, and be advantageous to improve the definition of scanning pattern.As the optimization of the present embodiment, institute
It is pure color square plate to state fixed plate, such that the marginal information of tested pattern highlights on pure color square plate, if not
Using pure color square plate, the edge unobvious of the tested pattern on scanning pattern are may result in, in subsequent processes, meter
It is inaccurate to calculate pixel.
With reference to figure 3, Fig. 3 is the refinement schematic flow sheet of step S20 in first embodiment of the invention.
As shown in Figure 3, it is preferable that the step S20 includes step：
Step S21, it is several partial images to divide pretreated scan image；
Step S22, the partial image is amplified with preset multiple；
Step S23, obtain the pixel quantity of partial image after each amplification.
In the present embodiment, in the step s 21, pretreated scan image is divided into several partial images, if tested
Pattern occupies fixed plate more than half area, is divided into 6 partial images；If tested pattern occupies fixed plate less than half area,
It is divided into 4 partial images；In step S22, partial image is amplified with preset multiple, whether judges the partial image after amplification
In the presence of irregular pixel, if in the presence of irregular pixel is merged, performs step S23.This irregular pixel
Because sample is probably to be made by handwork, bumps are uneven on top layer causes majority.Irregular pixel expression, the picture
The area of vegetarian refreshments is obviously more than normal pixels point area.Wherein, expression is merged, by the more conventional pixel of irregular pixel
Redundance incorporate the regular section of the irregular pixel.Finally calculate pixel quantity.
With reference to figure 4, Fig. 4 is the step S10 of first embodiment of the invention refinement schematic flow sheet.
As shown in Figure 4, it is preferable that the step S10 includes step：
Step S11, judge that the image border in scan image whether there is gray areas；
Step S12, if gray areas be present, the gray areas is adjusted.
In the present embodiment, in step s 11, scanned by the aberration of scanning machine, you can determine that image border whether there is
Gray areas, then if it does, carrying out alignment processing according to the outside or inside that sample is in gray areas.If
Gray areas is in the outside of sample, whitening processing or deletion can be carried out to gray areas, if gray areas is in
The inside of sample, Darkening process can be carried out to gray areas.The present embodiment is one kind of pretreatment, is advantageous to subsequently to sweeping
Image procossing is retouched, calculates whole pixel more accurate.
Preferably, in the step S1, the sample is fitted in the fixed plate, the side of the sample
The side of edge and fixed plate is separated by pre-determined distance.In the present embodiment, pre-determined distance is at least 10mm, to ensure obtaining sample
Pixel when, edge is obvious, is easier to distinguish, improve calculating speed.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (5)
1. one kind measurement silk-screen area method, it is characterised in that comprise the following steps：
Step S10, the scan image of sample is pre-processed；
Step S20, the pixel quantity of the scanning pattern is obtained based on pretreated scan image；
Step S30, silk-screen area is calculated based on pixel quantity.
2. measurement silk-screen area method as claimed in claim 1, it is characterised in that before the step S10, including step：
Step S1, sample is placed in the fixed plate of pre-set dimension；
Step S2, is scanned to fixed plate.
3. measurement silk-screen area method as claimed in claim 1, it is characterised in that the step S20 includes step：
Step S21, it is several partial images to divide pretreated scan image；
Step S22, the partial image is amplified with preset multiple；
Step S23, obtain the pixel quantity of partial image after each amplification.
4. measurement silk-screen area method as claimed in claim 1, it is characterised in that the step S10 includes step：
Step S11, judge that the image border in scan image whether there is gray areas；
Step S12, if gray areas be present, the gray areas is adjusted.
5. measurement silk-screen area method as claimed in claim 2, it is characterised in that in the step S1, the sample
It is fitted in the fixed plate, the edge of the sample and the side of fixed plate are separated by pre-determined distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710637485.9A CN107478179A (en) | 2017-07-31 | 2017-07-31 | Measure silk-screen area method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710637485.9A CN107478179A (en) | 2017-07-31 | 2017-07-31 | Measure silk-screen area method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107478179A true CN107478179A (en) | 2017-12-15 |
Family
ID=60598436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710637485.9A Pending CN107478179A (en) | 2017-07-31 | 2017-07-31 | Measure silk-screen area method |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610132A (en) * | 2018-11-22 | 2019-04-12 | 无锡小天鹅股份有限公司 | Laundry process, device and controller |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101770145A (en) * | 2010-01-12 | 2010-07-07 | 圆展科技股份有限公司 | Method for estimating actual size of object and real object projector |
| CN103389041A (en) * | 2013-07-30 | 2013-11-13 | 中节能太阳能科技（镇江）有限公司 | Method for measuring width of grating line |
-
2017
- 2017-07-31 CN CN201710637485.9A patent/CN107478179A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101770145A (en) * | 2010-01-12 | 2010-07-07 | 圆展科技股份有限公司 | Method for estimating actual size of object and real object projector |
| CN103389041A (en) * | 2013-07-30 | 2013-11-13 | 中节能太阳能科技（镇江）有限公司 | Method for measuring width of grating line |
Non-Patent Citations (3)
| Title |
|---|
| 于峰等: "一种基于图像特征值算法的叶面积测定方法", 《中国农业大学学报》 * |
| 李万春等: "基于常规扫描仪的植物叶面积计算系统", 《气象》 * |
| 肖强等: "利用数码相机和Photoshop软件非破坏性测定叶面积的简便方法", 《生态学杂志》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610132A (en) * | 2018-11-22 | 2019-04-12 | 无锡小天鹅股份有限公司 | Laundry process, device and controller |
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Application publication date: 20171215 |