CN102564970A - Method for evaluating colorfastness to washing of transfer-printed textile based on image analysis - Google Patents
Method for evaluating colorfastness to washing of transfer-printed textile based on image analysis Download PDFInfo
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- CN102564970A CN102564970A CN2012100025813A CN201210002581A CN102564970A CN 102564970 A CN102564970 A CN 102564970A CN 2012100025813 A CN2012100025813 A CN 2012100025813A CN 201210002581 A CN201210002581 A CN 201210002581A CN 102564970 A CN102564970 A CN 102564970A
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Abstract
The invention relates to a method for evaluating the colorfastness to washing of a transfer-printed textile based on image analysis, so that the colorfastness to washing of the transfer-printed textile with a complex color and a pattern structure can be overall, precisely and objectively evaluated. The method for evaluating the colorfastness to washing of the transfer-printed textile based on the image analysis is realized by cooperation of a hardware part and a software part. The hardware part can be used for obtaining an image of the transfer-printed textile. The image can be obtained, stored and cut by the software part, which mainly comprises an industrial video kit (1), a light source (2), a light source controller (3), a computer host (4), a display (5), a data transmission lead wire (6) and a sample stable for mounting the industrial video kit and the light source. Furthermore, the grey-scale feature count, the estimation of the colorfastness to washing of the transfer-printed textile, and the estimation of the staining level of the pure cotton fiber white lining sample are realized by the software part.
Description
Technical field
The present invention relates to a kind of transfer printing textile fastness to soaping evaluation method based on graphical analysis; This method than ISO 105C10:2006 " textile color stability test C10 part: anti-soap lye or soap and soda liquid washing colour fastness " and GB/T 3921-2008 " textile color stability test fastness to soaping " stipulate based on gray scale or instrument; Contrast original sample; Fading of sample of evaluation compared with the staining method of adjacent fabric; The method that this invention proposes is more objective, accurate, can effectively reduce the subjective error of bringing of passing judgment on.
Background technology
Transfer printing has that labour intensity is low, production efficiency is high, to characteristics such as the adaptability of fabric are strong, can obtain the flower effect that type is active, color and luster is rich and gaudy, widespread use in printing in textiles.The WASHING COLOR FASTNESS evaluation is the important composition that the transfer printing quality of textile products is estimated, and for all PRINTED FABRICs, must carry out the WASHING COLOR FASTNESS evaluation.In existing evaluation method, mainly change according to printing textile washing front and rear surfaces color depth, for example whiteness value and K/S value change.But in the instrument of existing test whiteness value and K/S value, can only get a little the part of textile and measure, can't realize the global measuring of monoblock textile, test result can not reflect textile local detail in washing process situation of fading.
In addition, because the transfer printing textile is complicated because of its color, the objective exact evaluation of fastness to soaping is a bottleneck problem of puzzlement transfering printing technology always.Invention will propose a kind of transfer printing textile fastness to soaping evaluation method based on graphical analysis, realize objective, the precise quantification evaluation of WASHING COLOR FASTNESS and staining fastness.
Summary of the invention
The objective of the invention is to propose a kind of transfer printing textile fastness to soaping evaluation method, realize the overall situation, meticulous, the objective evaluation of transfer printing textile fastness to soaping based on graphical analysis.In order to realize this purpose, will be based on the transfer printing textile fastness to soaping evaluation method of graphical analysis through hardware components and software section cooperation realization.
Hardware components can be realized obtaining of transfer printing textile images, and it mainly installs the sample bench (7) of usefulness by industrial video external member (1), light source (2), light source controller (3), main frame (4), display (5), data transmission wires (6) and industrial video external member and light source.
Industrial video external member (1) is made up of face battle array colorful CCD camera, data line and capture card, is the Primary Component that the transfer printing textile images is gathered.Wherein, area array CCD resolution is not less than 2048 * 2048 pixels.
Light source (2) and light source controller (3) are used, when satisfying the collection of transfer printing textile images, and the specimen surface brightness requirement.Light source controller (2) can be regulated the brightness of light source.Wherein, light source (2) should be the LED strip source, uses in pairs, and light source length is not less than 50 centimetres, and LED is no less than 4 rows in the single source.
Software section is a kind of computer program; Can be used with hardware components, obtain Sample Image, realize the analysis of washing front and back transfer printing textile images; Extract fabric sample image texture features value before and after the washing, to describe the fabric sample situation of fading.In software section; Transfer printing textile images analytic function can be realized through programming development environment; For example the programming of MATLAB, Microsoft Visual C++, Microsoft Visual Basic and Delphi realizes, also can carry out secondary development through the digital imaging processing software of special use and realize.
Hardware components and software section are based on the fundamental of the transfer printing textile fastness to soaping evaluation method realization of graphical analysis, and both are indispensable.
Description of drawings
Schematically provided the main example of technology implementation mode of the present invention in the accompanying drawings, wherein,
Fig. 1 hardware mechanism is partly formed synoptic diagram;
Fig. 2 software section major function synoptic diagram.
Embodiment
According to requirement among the GB/T3921-2008; When sample is fabric; Prepare composite sample according to following method: getting size is one of 100 millimeters * 40 millimeters transfer printing fabric sample, and the front contacts with one 100 millimeters * 40 millimeters textile fiber white adjacent fabrics, sews up along a minor face.In this example, in order to simulate the fade stability of environment and warranty test of true laundry, adopt the family expenses Rolling washing machine once five samples to be washed.For example, adopt hardware shown in Figure 1 to cooperate software shown in Figure 2 that the transfer printing fabric sample that dries before and after the washing is taken pictures, calculate the gray average I of washing front and back Sample Image
bAnd I
aCan know that according to the machine vision principle fade after the sample washing, color shoals, it is big that its gray-scale value becomes.Therefore, therefore calculate washing front and back Sample Image gray-scale value recruitment η:
η＝I
a-I
b (1)
In formula (1), gray average difference η is big more before and after the same sample washing, and it is serious more to explain that sample fades.
Simultaneously, textile fiber white adjacent fabric when washing with the transfer printing fabric sample, can on dye the dyestuff of transfer printing fabric sample decolouring, the dyeing phenomenon appears.Therefore, after the staining of textile fiber white adjacent fabric, gray-scale value can reduce, and its decrease also can be used as the measurement index of transfer printing fabric sample fading extent.Textile fiber white adjacent fabric gray average reduces value and is:
v＝T
b-T
a (2)
In formula (2), T
bAnd T
aBe respectively textile fiber white adjacent fabric sample washing front and back gray average.V representes that textile fiber white adjacent fabric gray average reduces value, and the v value is big more, explains that adjacent fabric staining is serious more, and transfer printing fabric washing sample is serious more.
Confirm to fade and the staining grade according to transfer printing fabric sample gradation of image value recruitment η and textile fiber white adjacent fabric sample gray average decrease v before and after the washing, specifically as shown in table 1.
Table 1 transfer printing textile fastness to soaping table of grading
| The η value | 0-10 | 11-20 | 21-30 | 31-40 | 41-50 | ＞50 |
| The fastness to soaping |
5 | 4 | 3 | 2.5 | 2 | 1 |
| The v value | 0-10 | 11-20 | 21-30 | 31-40 | 41-50 | ＞50 |
| Paste lining |
5 | 4 | 3 | 2.5 | 2 | 1 |
According to requirement among the GB/T3921-2008, contain the 5g washing agent in every premium on currency, based on the washing machine inflow amount, in pattern of expressing and the washing of linen-cotton pattern, use 60g and 110g washing agent respectively.Transfer printing fabric sample after the washing and textile fiber white adjacent fabric sample are dried, and adopt NI Vision Builder for Automated Inspection to take pictures, calculate the gray average of sample before and after washing.When the washing water temperature is 40 ℃; Transfer printing fabric sample (abbreviating the sample that fades as) and textile fiber white adjacent fabric sample (abbreviate as and paste the lining sample) expressing and the washing of linen-cotton washing mode before and after the Sample Image gray average, and fastness to soaping and staining grade are as shown in table 2.
During table 240 ℃, sample washing fastness to soaping and staining grade
Claims (8)
1. the transfer printing textile fastness to soaping evaluation method based on graphical analysis will realize through hardware components and software section cooperation; Hardware components should realize that the baroque transfer printing fabric sample of colour image and textile fiber white pastes the high precision of lining Sample Image and obtain, it mainly by industrial video external member (1), light source (2), light source controller (3), main frame (4), display (5), data transmission wires (6) and sample place, industrial video external member and light source install the sample bench (7) of usefulness.Software section can real world images obtain, preservation, cutting, and gray feature statistics and transfer printing textile fastness to soaping grade and textile fiber white are pasted the evaluation that serves as a contrast sample staining grade and the output of evaluation result.
2. according to claim 1, industrial video external member (1) should comprise face battle array colorful CCD camera, data line and capture card at least.Wherein, area array CCD resolution is not less than 2048 * 2048 pixels.
3. according to claim 1, light source (2) and light source controller (3) are used, in the time of should satisfying the collection of transfer printing textile images, and the specimen surface brightness requirement.Light source controller (2) should be regulated the brightness of light source.Wherein, light source (2) should be the LED strip source, uses in pairs, and light source length is not less than 50 centimetres, and LED is no less than 4 rows in the single source.
4. according to claim 1; Main frame (4) should be furnished with industrial video external member IMAQ card slot or interface; At least can image pick-up card be connected with computer motherboard through a kind of mode in VGA interface, DVI interface, USB interface, 1394 interfaces or PCI slot, PCI-E slot, ISA slot, the AGP slot, realize the collection and the demonstration of image.
5. according to claim 1 and claim 4, industrial video external member (1) and main frame (4) should interconnect through data transmission wires (7) with display (5), and wherein, display (5) should be color monitor, can show the RGB coloured image.
6. according to claim 1 and claim 5, in hardware system, have two single data transfer wires (6) at least, can realize respectively that image is from industrial video external member (1) to main frame (4) with the transmission of image information from main frame (4) to display (5).
7. according to claim 1, hardware components should comprise sample bench (7), and it can be used for mounting industrial video external member (1) and light source (2), and transfer printing fabric sample and textile fiber white that placement need be taken pictures are pasted the lining sample.Wherein, the sample bench of placing the sample part be square, and size is 3 times of small sample area not.
8. according to claim 1, transfer printing fabric sample color can not be solid color, and its surface comprises two or more colors at least.Textile fiber white is pasted the lining sample, should be through the pure cotton fabric after the bleaching, and its whiteness is not less than 75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100025813A CN102564970A (en) | 2012-01-06 | 2012-01-06 | Method for evaluating colorfastness to washing of transfer-printed textile based on image analysis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100025813A CN102564970A (en) | 2012-01-06 | 2012-01-06 | Method for evaluating colorfastness to washing of transfer-printed textile based on image analysis |
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| CN102564970A true CN102564970A (en) | 2012-07-11 |
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| CN2012100025813A Pending CN102564970A (en) | 2012-01-06 | 2012-01-06 | Method for evaluating colorfastness to washing of transfer-printed textile based on image analysis |
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Application publication date: 20120711 |