CN115905647A - Method and system for obtaining dye formula of fabric color - Google Patents

Abstract

The invention discloses a method and a system for obtaining a dye formula of fabric color, which relate to the field of dye formula selection, and the method comprises the following steps: determining the colors of various fabrics, generating a color database according to the dye formula information and the color characteristic value information of each fabric color, and manufacturing a real object color card; obtaining a color sample to be tested, and obtaining a first screening color reference sample according to the color characteristic value information of the color sample to be tested and the total tolerance of the fabric color and the color sample to be tested; visually evaluating the physical color card corresponding to each first-time screening color reference sample and the color sample to be tested, screening the physical color card with the color closest to the color sample to be tested, and determining a second-time screening color reference sample; and determining the optimal dye formula corresponding to the color sample to be detected from the second color reference sample by taking the lowest cost of the dye and the optimal color fastness as the standard. The invention can efficiently find the optimal dye formula with the lowest dyeing cost consumption and the highest various fastness indexes in the shortest time.

Description

Method and system for obtaining dye formula of fabric color

technical field

The invention relates to the field of dye formula acquisition, in particular to a dye formula acquisition method and system for fabric color.

Background technique

At present, the biggest problems restricting textile fabrics are color stability and cost consumption. The dye selection and dyeing problems are important factors causing this problem. Each color must be sampled before dyeing to determine the color selection method, the accuracy of the dye prescription in the head tank, the feasibility of the dyeing process parameters, the budget of the dyeing material cost and whether it meets the requirements of the fabric. The ultimate fastness index. At present, the repetitive work of making small samples before dyeing, the lengthy production cycle, and the uncontrollability of dye cost and dyeing quality, because of the lack of a complete color system as a reference, cause a lot of waste of manpower, material resources, and financial resources.

Contents of the invention

The object of the present invention is to provide a method and system for obtaining the dye formula of the fabric color, which can obtain the best dye formula of the fabric color to be tested with high efficiency and low consumption.

To achieve the above object, the present invention provides the following scheme:

A method for obtaining a dye formula for fabric color, the method comprising:

Determine m color schemes, and generate n pieces of color information for each of the color schemes, and all the color information corresponding to all the color schemes constitute m*n kinds of fabric colors;

Generate a color database according to the dye formulation information and color feature L*a*b* value information of each of the fabric colors, and make a physical color card for each of the fabric colors; each of the fabric colors corresponds to a variety of the fabric colors Dye formulation information;

Obtain the color sample to be tested, and according to the color characteristic L*a*b* value information of the color sample to be tested and the total tolerance between the fabric color and the color sample to be tested, the first time Screening color reference samples;

Visually assessing the physical color card corresponding to each of the first screening color reference samples and the color sample to be tested, and selecting the physical color card whose color is closest to the color sample to be tested, Record it as the target physical color card, and determine that the fabric color corresponding to the target physical color card is the second screening color reference sample;

Taking the lowest cost of dyestuffs, the best color fastness to sunlight and wet and dry rubbing as the standard, the to-be-treated color is determined from the dye formulation information corresponding to all the second color reference samples. The best dye formula corresponding to the test color sample.

Optionally, before generating the color database according to the dye formula information and color feature L*a*b* value information of each of the fabric colors, it also includes: numbering each fabric color, and each fabric color number includes Overall color hue value, specific hue value, color lightness value and color chroma value.

Optionally, according to the color characteristic L*a*b* value information of the color sample to be tested and the total tolerance between the fabric color and the color sample to be tested, the first screening color is obtained Reference samples, including:

Determine the color feature value comparison interval according to the color feature L*a*b* value information of the color sample to be tested; the color feature value comparison interval includes the comparison interval of the color feature L* value, the comparison of the color feature a* value The contrast interval between the interval and the color feature b* value;

Select the fabric color whose color feature L*a*b* value is in the comparison interval of the color feature value from the color database, and record it as the target color reference sample;

Calculate the total tolerance between each target color reference sample and the color sample to be tested, and filter out all the target color reference samples whose total tolerance is less than a preset value, which is the first time Screen color reference samples.

Optionally, the selection of the fabric color whose color feature L*a*b* value is in the comparison interval of the color feature value from the color database specifically includes:

In the color database, the color feature L* value is screened out in the comparison interval of the color feature L* value, and the color feature a* value is in the comparison interval of the color feature a* value, and the color feature b* value The fabric color in the comparison interval of the b* value of the color characteristic.

Optionally, the calculation of the total tolerance between each target color reference sample and the color sample to be tested includes:

calculating the brightness difference, saturation difference and hue difference between each of the target color reference sample and the color sample to be tested;

The total tolerance is calculated based on the brightness difference, the saturation difference and the hue difference.

Optionally, one fabric color includes i color matching methods; each color matching method corresponds to only one color matching formula; each color matching formula is formed by blending j colors; wherein Each of the above-mentioned colors corresponds to h dyeing prescriptions; each of the above-mentioned dyeing prescriptions corresponds to a dyeing process, the cost of dyeing materials, color fastness to sunlight, and color fastness to dry and wet rubbing; each of the above-mentioned fabrics The color corresponds to j×h kinds of dye formulation information.

The present invention also provides a dye formula acquisition system for fabric color, said system comprising:

The fabric color determination module is used to determine m color schemes, and generate n pieces of color information for each of the color schemes, and all the color information corresponding to all the color schemes constitute m*n kinds of fabric colors;

A color database and physical color card construction module, used to generate a color database according to the dye formula information and color characteristic L*a*b* value information of each described fabric color, and make a physical color card for each described fabric color; Each of the fabric colors corresponds to a plurality of dye formula information;

The first screening module is used to obtain the color sample to be tested, and according to the color characteristic L*a*b* value information of the color sample to be tested and the total of the color of the fabric and the color sample to be tested Tolerance, get the color reference sample for the first screening;

The second screening module is used to visually evaluate the physical color card corresponding to each of the first screening color reference samples and the color sample to be tested, and screen out the color closest to the color sample to be tested. The physical color card of the sample is recorded as the target physical color card, and the fabric color corresponding to the target physical color card is determined to be the second screening color reference sample;

The optimal dye formulation determination module is used to use the lowest cost of dyestuff, the color fastness to light and the color fastness to wet and dry rubbing as the standard, and select the corresponding color fastness from all the second color reference samples. The optimal dye formula corresponding to the color sample to be tested is determined in the dye formula information.

Optionally, the first screening module specifically includes:

A comparison interval determination unit, configured to determine a color feature value comparison interval based on the color feature L*a*b* value information of the color sample to be tested; the color feature value comparison interval includes a color feature L* value comparison interval, The comparison interval of the color feature a* value and the comparison interval of the color feature b* value;

The interval screening unit is used to select the fabric color whose color characteristic L*a*b* value is in the comparison interval of the color characteristic value from the color database, and record it as the target color reference sample;

The total tolerance calculation and screening unit is used to calculate the total tolerance of each target color reference sample and the color sample to be tested, and filter out all the target colors whose total tolerance is less than a preset value The reference sample is the color reference sample for the first screening.

Optionally, the interval screening unit specifically includes:

The interval screening subunit is used to screen out the color feature L* value in the comparison interval of the color feature L* value in the color database, and the color feature a* value is in the comparison interval of the color feature a* value , and the color of the fabric whose color feature b* value is in the comparison interval of the color feature b* value.

Optionally, the total tolerance calculation and screening unit specifically includes:

The total tolerance calculation subunit is used to calculate the brightness difference, saturation difference and hue difference between each of the target color reference sample and the color sample to be tested; according to the brightness difference, the saturation difference and the The total tolerance is calculated based on the hue difference.

According to the specific embodiments provided by the invention, the invention discloses the following technical effects:

The invention discloses a dye formula acquisition method and system for fabric colors. The method includes: determining a variety of fabric colors, generating a color database and making a physical color card according to the dye formula information and color characteristic value information of each fabric color; color sample, and based on the color characteristic value information of the color sample to be tested and the total tolerance between the fabric color and the color sample to be tested, the first screening color reference sample is obtained; for each first screening color reference sample The corresponding physical color card and the color sample to be tested are visually evaluated, and the physical color card whose color is closest to the color sample to be tested is screened out and the reference color sample for the second screening is determined; the dyestuff has the lowest cost and the highest color fastness. The optimal dye formula is determined from the second color reference sample to determine the corresponding optimal dye formula for the color sample to be tested. The invention can efficiently find the best dye formula with the lowest dyeing cost consumption and the highest fastness indexes in the shortest time.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without paying creative labor.

Fig. 1 is a flow chart of a method for obtaining a dye formulation of a fabric color provided in Example 1 of the present invention;

Fig. 2 is a schematic diagram of a dye formula acquisition method for fabric color provided in Example 1 of the present invention;

Fig. 3 is a schematic diagram of the physical color card provided by Embodiment 1 of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The purpose of the present invention is to provide a method and system for obtaining dye formulas for fabric colors, which solves the tedious and repetitive work process and technical pain points, and can efficiently find the lowest dyeing cost and various fastnesses in the shortest time. The best dye recipe with the highest metric. It provides a strong innovation basis for shortening the product production cycle, stabilizing quality, reducing production costs, and reducing the repetitive work of making small samples before dyeing.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, this embodiment provides a method for obtaining a dye formula for fabric color, the method comprising:

S1: Determine m color systems, and generate n pieces of color information for each color system, and all the color information corresponding to all the color systems constitute m*n fabric colors.

For example, according to the color system of 1 gray, 2 meters, 3 yellow, 4 coffee, 5 red, 6 green, 7 blue, and 8 camel (m=8), the production of large machines is optimized according to dyeing-color matching-color mixing-drawing-spinning-weaving-finishing - 640 pieces (m×n types) of blended fabrics with high efficiency and low consumption, high quality and low price, and fashionable and fashionable colors obtained through the finished product process. 80 (n=80) color information for each color system. The color information includes dye information and color characteristic information. The 640 pieces of fabrics are based on the company's internal control standards, with high efficiency and low consumption, high market turnover rate, and fashion as the standard.

Before step S2, each fabric color is numbered, and each fabric color number includes the hue value of the overall color system, the specific hue value, the color lightness value and the color saturation value.

The purpose of numbering the fabric color is to facilitate color management. The order of numbers in the number indicates the color system, specific hue, lightness, and chroma of the color.

Color number: the first number represents the overall color hue, the second number represents the specific hue, the third number represents the lightness, and the fourth letter represents the color saturation.

When numbering the colors of all fabrics, it is required that the overall color system hue value, specific hue value, color lightness value and color saturation value be numbered one by one from small to large. For example, first number the overall hue values of all fabric colors from small to large, and then number the specific hue values of all fabric colors from small to large, and so on, and number the color lightness value and color saturation value .

S2: Generate a color database according to the dye formula information and color characteristic L*a*b* value information of each fabric color, and make a physical color card for each fabric color.

For each fabric color, the multi-group and dye-associated information (dye formula information) of the large machine from dyeing-color matching-color mixing are summarized.

Test the tristimulus values X, Y, and Z of each fabric color corresponding to the number, and calculate its color characteristic L*a*b* value (color lightness value L*, red and blue value a*, yellow-green value b* value) , to get the color feature value information.

Input the color dye information and color characteristic L*a*b* value information of each piece of fabric into the computer to establish a color database (color management system).

For example, 640 fabrics are made into physical color cards. Each fabric color corresponds to a color card and a color number. Combined with the color management system to establish a complete color system from color samples to dye information and color feature information.

Each fabric color corresponds to a plurality of dye formula information. One of the fabric colors includes i color matching methods; each of the color matching methods corresponds to only one color matching formula; each of the color matching formulas is formed by blending j colors; each of the color matching methods The above colors correspond to h dyeing prescriptions; each of the dyeing prescriptions corresponds to a dyeing process, the cost of dyeing materials, the color fastness to sunlight and the color fastness to dry and wet rubbing; each of the fabric colors corresponds to j× h kinds of dye formulation information.

As shown in Figure 3, the physical color card of the color has the characteristics of width 15cm*length 21cm*thickness 1mm, and each color fabric has the characteristics of 10cm*10cm square. In order to make the fabric flat and beautiful, use masking tape around the fabric Fix it, cut it into a square of 10cm*10cm with lace scissors, and then paste it at a distance of 6cm from the upper edge of the color card. A space of 15cm long and 6cm wide is reserved on the upper edge of the color card to identify the color category of the fabric color, number, blending content, Yarn count and production time.

S3: Obtain the color sample to be tested, and according to the color characteristic L*a*b* value information of the color sample to be tested and the total tolerance between the fabric color and the color sample to be tested, obtain the first Screen color reference samples once.

Wherein, step S3 specifically includes:

S31: Determine the color feature value comparison interval according to the color feature L*a*b* value information of the color sample to be tested; the color feature value comparison interval includes the color feature L* value comparison interval, and the color feature a* value The contrast interval of and the contrast interval of the color feature b* value.

First, set the minimum comparison interval for the L* value, a* value, and b* value respectively. Specifically, set L*=L ₀ , a*=a ₀ , b*=b ₀ of the color sample to be tested; L* The minimum interval is [0.95L ₀ , 1.05L ₀ ], the minimum interval of a* is [0.95a ₀ , 1.05a ₀ ], and the minimum interval of b* is [0.95b ₀ , 1.05b ₀ ].

S32: Select the fabric color whose color feature L*a*b* value is in the comparison range of the color feature value from the color database, and record it as a target color reference sample.

If the color L*a*b* value is within the interval, it can be used as reference information for the color sample to be tested. The minimum interval value of the brightness difference ΔL between the color sample to be tested and the numbered fabric color sample is [-0.05, +0.05], the minimum interval value of the saturation difference ΔC is [-0.225, +0.2255], and the minimum interval value of the hue difference ΔH is [-0.17, +0.17]. All numbered color samples whose total tolerance DE value is ≤0.2 can be used as the color reference samples for the first screening of the color samples to be tested.

Wherein, step S32 specifically includes:

In the color database, the color feature L* value is screened out in the comparison interval of the color feature L* value, and the color feature a* value is in the comparison interval of the color feature a* value, and the color feature b* value The fabric color in the comparison interval of the b* value of the color characteristic.

S33: Calculate the total tolerance between each target color reference sample and the color sample to be tested, and filter out all the target color reference samples whose total tolerance is smaller than a preset value, which is the first color reference sample Screen color reference samples once.

Wherein, calculating the total tolerance in step S33 specifically includes:

calculating the brightness difference, saturation difference and hue difference between each of the target color reference sample and the color sample to be tested; calculating the total tolerance according to the brightness difference, the saturation difference and the hue difference .

The tolerance DE={ΔL/(I×S _L )] ² +[ΔC/(C×S _C )] ² +(ΔH/S _H ) ² } ^1/2 , in the color difference calculation formula ΔL, ΔC, ΔH is the brightness difference, saturation difference, and hue difference between the standard sample and the sample calculated by the CIELAB color difference formula. I and C in the formula are two coefficients for adjusting the relative wide capacity of lightness and saturation; S _L is lightness Weighting factor; S _C is the weighting factor of chroma; _SH is the weighting factor of hue.

When screening the first color reference sample according to the total tolerance, it can also be determined by the color difference rating between the fabric color and the color sample to be tested. The color difference rating is evaluated based on the CMC total color difference DE value and the corresponding level comparison table. ,As shown in Table 1.

Table 1: The relationship between the total color difference DE value and the color difference rating of 1CMC _(1:1) color difference formula

When the DE value is less than or equal to 0.2, the color difference between the first screening color reference sample and the sample to be tested is 5 grades. Therefore, the fabric color with a color difference of 5 grades from the color sample to be tested can also be used as the first screening color reference sample. The results of the color difference rating and the first screening color reference sample determined by the total tolerance are the same, but expressed in two different ways.

S4: Visually evaluate the physical color card and the color sample to be tested corresponding to each color reference sample screened for the first time, and select the physical color with the color closest to the color sample to be tested. Card, recorded as the target physical color card, and determine the fabric color corresponding to the target physical color card as the second screening color reference sample.

All reference samples of the first screened color whose color difference from the color sample to be tested reaches 5 grades shall be visually evaluated for the second time with the color sample to be tested in sequence according to the color number.

The visual evaluation standards are: light source standard, environmental standard, observer standard and observed person standard.

The light source standard is: D65 light source with a color temperature of 6500K+200K.

The environmental standard is: the color of the observation platform and the light source environment must be Munsell N6-N7 neutral gray, and the inclination angle between the observation platform and the light source platform is 45°.

The observed standard is: the observation table is placed in the middle of the light source, all the reference samples of the first screening color must be partially superimposed and placed closely on the observation table in the same direction, and the color samples to be tested are placed on the observation table for dynamic comparison.

Observer criteria are: have certain experience and technology, be sensitive to color, and the observer needs to conduct visual evaluation from multiple angles, and select the physical fabric (physical color card) whose color is closest to the sample to be tested.

S5: Taking the lowest cost of dyes and chemicals, the best color fastness to sunlight and wet and dry rubbing as the standard, determine the dye formula information corresponding to all the second color reference samples. The best dye formula corresponding to the color sample to be tested.

In this embodiment, a high-efficiency and low-consumption color system establishment to dye optimization method is disclosed. It relates to the technical field of an efficient, quick and low-consumption fabric color system and the optimization of the dyeing performance of dyes according to the establishment of the color system. It can efficiently match the color matching method and the best dye formula with the lowest dye cost consumption and the highest fastness indicators in the shortest time. It can shorten the production cycle of the product, stabilize the quality, reduce the production cost, and reduce the repetition of the work of making small samples before dyeing.

Provided below are several examples of applying the method of this embodiment:

Case 1: Dr. Nuan’s new material order: blended content 60% cotton/40% lyocell, yarn count: 32Ne, order quantity 10,000 meters, overall color system: red, specific color hue: light reddish orange, required to be sun-dried reached level 5. Test its customer color sample tristimulus value X, Y, Z, calculate its L*=54.62, a*=39.25, b*=6.84, its L* minimum interval is set to [51.89, 57.35], the minimum interval of a* is set It is [37.28, 41.21], the minimum interval of b* is set to [6.50, 7.18], and the color numbers of L*a*b* values within the interval obtained in the color management system (color database) are 5322, 5331, 5324, 5330, 5321, these 5 colors can be used as reference information of the color to be tested. According to the minimum interval of brightness difference ΔL [-0.05, +0.05], the minimum interval of saturation difference ΔC [-0.225, +0.225], the minimum interval of hue difference ΔH [-0.17, +0.17], The numbered colors whose total tolerance DE value is less than or equal to 0.2 remain two colors 5322 and 5321. All can be used as the first reference sample of the color to be tested (the first screening color reference sample). Combined with the comparison of the color card and the physical sample, the color sample numbered 5322 is determined as the best color reference sample.

Click the number 5322 in the color information database to retrieve the corresponding color matching information at random:

Raw White Cotton Yellow Cotton Red Lyocell

30% 20% 40%

There are multiple dye compatibility options for the dyeing prescription of selected color fibers, and the dyes are selected according to the order requirements.

There are two types of dye prescribing information for red lyocell:

Color fastness to rubbing: in accordance with GBT3920-2008 "Textile Color Fastness Tests Color Fastness to Rubbing".

Color fastness to sunlight; according to GB/T8427-2019 "Textile Color Fastness Tests Color Fastness to Artificial Light: Xenon Arc".

According to the cost of dyeing materials and the requirements of light fastness, the red lyocell optimizes the prescription information of reactive dyes 1, and the data information of the dyeing process in large tank production is:

Pre-treatment: Add soda ash Na ₂ CO ₃ 3g/L at 30°C, raise the temperature to 70°C, run for 10 minutes and then raise the temperature to 98°C, the heating rate is 1°C/min, keep warm for 40 minutes, cool down to 30°C, drain and rinse.

Dyeing process: Add Na ₂ SO ₄ 15g/L and soda ash Na ₂ CO ₃ 1g/L in auxiliary vat 1 and discharge it into the main vat after running for 30 minutes, add dye in auxiliary vat 2 and run for 30 minutes, discharge it into the main vat, and heat up to 80°C , the heating rate is 0.5°C/min, add soda ash Na ₂ CO ₃ 5g/L after holding for 20 minutes, keep holding for 30 minutes, cool down, drain and rinse to 50°C.

Post-treatment and color fixation: add detergent Evecle R1g/L to the auxiliary tank, discharge it into the main tank after running for 30 minutes, heat up to 60°C, drain and rinse the tank after running for 15 minutes.

There are two types of dye prescription selection information for yellow cotton:

According to the cost information of dyeing materials and light fastness requirements of yellow cotton, the reactive dye prescription 1 is selected, and the dyeing process information is the same as that of red lyocell.

Color fastness to rubbing: in accordance with GBT3920-2008 "Textile Color Fastness Tests Color Fastness to Rubbing".

Color fastness to sunlight: According to GB/T8427-2019 "Textile Color Fastness Tests Color Fastness to Artificial Light: Xenon Arc".

Case 2: Jiangsu Pinchuang order: blended content of wool 20% cotton 30% lyocell 50%, yarn count: 32Ne, order quantity 10,000 meters, overall color system: green system, specific color hue: dark blue green, wet is required The rubbing fastness reaches grade 4. Test its customer color sample tristimulus value X, Y, Z, calculate its L*=19.55, a*=-23.53, b*=-38.25, its L* minimum interval is set to [18.57, 20.52], the minimum of a* The interval is set to [-24.70, -22.35], the minimum interval of b* is set to [-40.16, -36.33], and the color numbers of L*a*b* values within the interval obtained in the color management system are 6763, 6761, There are four 6765 and 6764, all of which can be used as reference information for the color to be tested. According to the minimum interval of brightness difference ΔL [-0.05, +0.05], the minimum interval of saturation difference ΔC [-0.225, +0.225], the minimum interval of hue difference ΔH [-0.17, +0.17], There are two remaining numbers 6763 and 6764 for the numbered colors whose total tolerance DE value is ≤0.2. Can be used as the first reference sample of the color to be tested. Combined with the comparison of the physical sample of the color card, the color sample No. 6764 is determined as the best color reference sample.

Click on the number 67647 in the color information database to retrieve the corresponding color matching information at random:

Raw White Lyocell Green Cotton Green Sea Wool

50% 30% % 20%

There are multiple dye compatibility options for the dyeing prescription of selected color fibers, and the dyes are selected according to the order requirements. There are two types of dyeing prescription selection information for green sea wool:

Color fastness to rubbing: in accordance with GBT3920-2008 "Textile Color Fastness Tests Color Fastness to Rubbing".

Color fastness to sunlight: According to GB/T8427-2019 "Textile Color Fastness Tests Color Fastness to Artificial Light: Xenon Arc".

According to the cost information of dyeing materials and color fastness to rubbing, Green Sea Wool optimizes the prescription information of reactive dyes 1, and the dyeing process data information of the vat is:

Dyeing process: At the beginning of 30°C, add 1% acetic acid HAC, 1% formic acid HCOOH, 0.5% defoamer FFA, and 2% leveling agent Abaig B to the auxiliary vat 1, and then discharge it into the main vat, and then drain it into the auxiliary vat 2. Add dye and run it for 30 minutes, discharge it into the main tank, raise the temperature to 70°C, the heating rate is 0.8°C/min, run for 10 minutes, then heat up to 98°C, the heating rate is 0.8°C/min, keep warm for 50 minutes, cool down, drain and rinse to 30°C .

Post-treatment: add soda ash Na ₂ CO ₃ 5g/L to the auxiliary tank and run for 30 minutes, then discharge into the main tank, raise the temperature to 80°C, the heating rate is 0.5°C/min, keep warm for 20 minutes, cool down, drain, rinse and raise the temperature to 50°C. Add formic acid HCOOH 1% to the auxiliary cylinder and run for 30 minutes and then discharge it into the main cylinder. After running for 10 minutes, the main cylinder is drained, rinsed and discharged out of the cylinder.

There are two types of dye prescribing information for Green Cotton:

The dry and wet rubbing fastnesses of the two groups of dye prescription information for green cotton are the same, but the dyeing prescription information 1 is preferred according to the dye cost information. The dyeing process information of the vat is the same as the dyeing process of yellow cotton in Example 1.

To sum up, it can be seen that the establishment of a high-efficiency and low-consumption color system to the dye optimization method provided by the present invention can quickly find color formulas, shorten proofing time, shorten product production cycles, save dyeing and chemical materials costs, and stabilize the dyeing process. And improve the fastness index.

Example 2

The invention provides a dye formula acquisition system for fabric color, said system comprising:

The fabric color determination module T1 is used to determine m color systems, and generate n color information for each color system, and all the color information corresponding to all the color systems constitute m*n fabric colors .

The color database and physical color card construction module T2 is used to generate a color database according to the dye formula information and color characteristic L*a*b* value information of each described fabric color, and make a physical color card for each described fabric color ; Each of the fabric colors corresponds to a plurality of dye formula information.

The first screening module T3 is used to obtain the color sample to be tested, and based on the color characteristic L*a*b* value information of the color sample to be tested and the relationship between the fabric color and the color sample to be tested The total tolerance, resulting in the first screening color reference sample.

The second screening module T4 is used to visually evaluate the physical color card corresponding to each of the first screening color reference samples and the color sample to be tested, and screen out the color closest to the color to be tested The physical color card of the sample is recorded as the target physical color card, and the fabric color corresponding to the target physical color card is determined as the second screening color reference sample.

The optimal dye formulation determination module T5 is used to use the lowest cost of dyestuffs, the best color fastness to sunlight and the best color fastness to wet and dry rubbing as the standard, from all the second color reference samples corresponding to The best dye formula corresponding to the color sample to be tested is determined from the dye formula information.

The first screening module T3 specifically includes:

A comparison interval determining unit T31, configured to determine a color feature value comparison interval according to the color feature L*a*b* value information of the color sample to be tested; the color feature value comparison interval includes a color feature L* value comparison interval , the comparison interval of the color feature a* value and the comparison interval of the color feature b* value.

The interval screening unit T32 is used to select the fabric color whose color characteristic L*a*b* value is in the comparison interval of the color characteristic value from the color database, and record it as the target color reference sample.

The interval screening unit T32 specifically includes:

The interval screening subunit is used to screen out the color feature L* value in the comparison interval of the color feature L* value in the color database, and the color feature a* value is in the comparison interval of the color feature a* value , and the color of the fabric whose color feature b* value is in the comparison interval of the color feature b* value.

The total tolerance calculation and screening unit T33 is used to calculate the total tolerance between each target color reference sample and the color sample to be tested, and filter out all the targets whose total tolerance is less than a preset value The color reference sample is the color reference sample for the first screening.

The total tolerance calculation and screening unit T33 specifically includes:

The total tolerance calculation subunit is used to calculate the brightness difference, saturation difference and hue difference between each of the target color reference sample and the color sample to be tested; according to the brightness difference, the saturation difference and the The total tolerance is calculated based on the hue difference.

Each embodiment focuses on the differences from other embodiments, and the same and similar parts of the various embodiments can be referred to each other. As for the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part.

In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; meanwhile, for those of ordinary skill in the art, according to the present invention Thoughts, there will be changes in specific implementation methods and application ranges. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims (10)

1. A fabric color dye formula obtaining method is characterized by comprising the following steps:

determining m color systems, and generating n pieces of color information for each color system, wherein all the color information corresponding to all the color systems form m × n fabric colors;

generating a color database according to the dye formula information and the color characteristic L a b value information of each fabric color, and manufacturing a real object color card for each fabric color; each fabric color corresponds to a plurality of dye formula information;

obtaining a color sample to be tested, and obtaining a first color screening reference sample according to the color characteristic L a b value information of the color sample to be tested and the total tolerance of the fabric color and the color sample to be tested;

visually evaluating the physical color card corresponding to each first-time screening color reference sample and the color sample to be tested, screening the physical color card with the color closest to the color sample to be tested, marking the physical color card as a target physical color card, and determining the fabric color corresponding to the target physical color card as a second-time screening color reference sample;

and determining the optimal dye formula corresponding to the color sample to be detected from the dye formula information corresponding to all the second color reference samples by taking the lowest dye cost, the optimal color fastness to sunlight and the optimal color fastness to dry and wet rubbing as the standards.

2. The method of claim 1, wherein prior to generating the color database based on the dye formula information and the color feature L a b value information for each of the fabric colors, further comprising: and numbering each fabric color, wherein each fabric color number comprises an integral color system hue value, a specific hue value, a color lightness depth value and a color chroma shade value.

3. The method according to claim 1, wherein the obtaining a first color reference sample for screening according to the color characteristic L a b value information of the color sample to be tested and the total tolerance between the fabric color and the color sample to be tested comprises:

determining a color characteristic value comparison interval according to the color characteristic L a b value information of the color sample to be detected; the color characteristic value contrast interval comprises a color characteristic L value contrast interval, a color characteristic a value contrast interval and a color characteristic b value contrast interval;

selecting the fabric color with the color characteristic L a b value in the color characteristic value contrast interval from the color database, and marking as a target color reference sample;

and calculating the total tolerance of each target color reference sample and the color sample to be detected, and screening out all the target color reference samples with the total tolerance smaller than a preset value, namely the color reference samples screened for the first time.

4. The method according to claim 3, wherein the selecting the fabric color with the color feature L x a x b value in the color feature value contrast interval from the color database specifically comprises:

and screening the fabric color of which the color characteristic L value is in the contrast interval of the color characteristic L value, the color characteristic a value is in the contrast interval of the color characteristic a value, and the color characteristic b value is in the contrast interval of the color characteristic b value in the color database.

5. The method according to claim 3, wherein the calculating the total tolerance of each of the target color reference samples and the color sample to be tested comprises:

calculating the brightness difference, the saturation difference and the chromatic aberration of each target color reference sample and the color sample to be detected;

and calculating the total tolerance according to the brightness difference, the saturation difference and the chromatic aberration.

6. The method of claim 1 wherein one of said fabric colors comprises i color matching patterns; each color matching mode only corresponds to one color matching formula; each color matching formula is formed by blending j colors; wherein each of said colors corresponds to h dyeing recipes; each dyeing prescription corresponds to information of a dyeing process, dye cost, color fastness to sunlight and color fastness to dry and wet rubbing; and each fabric color corresponds to j × h dye formula information.

7. A system for obtaining a dye formula of a fabric color is characterized by comprising:

the fabric color determining module is used for determining m color systems and generating n pieces of color information for each color system, wherein all the color information corresponding to all the color systems form m × n fabric colors;

the color database and physical color card construction module is used for generating a color database according to the dye formula information and the color characteristic La b value information of each fabric color and manufacturing a physical color card for each fabric color; each fabric color corresponds to a plurality of dye formula information;

the first screening module is used for obtaining a color sample to be tested and obtaining a first screening color reference sample according to the color characteristic La b value information of the color sample to be tested and the total tolerance of the fabric color and the color sample to be tested;

the second screening module is used for performing visual evaluation on the object color card corresponding to each first screening color reference sample and the color sample to be tested, screening the object color card with the color closest to the color sample to be tested, marking the object color card as a target object color card, and determining the fabric color corresponding to the target object color card as a second screening color reference sample;

and the optimal dye formula determining module is used for determining the optimal dye formula corresponding to the color sample to be detected from the dye formula information corresponding to all the second color reference samples by taking the lowest cost of dyes, the optimal color fastness to sunlight and the optimal color fastness to dry and wet rubbing as standards.

8. The system of claim 7, wherein the first screening module specifically comprises:

the comparison interval determining unit is used for determining a color characteristic value comparison interval according to the color characteristic L a b value information of the color sample to be detected; the color characteristic value contrast interval comprises a color characteristic L value contrast interval, a color characteristic a value contrast interval and a color characteristic b value contrast interval;

the interval screening unit is used for selecting the fabric color of which the color characteristic L A B value is in the color characteristic value contrast interval from the color database and marking as a target color reference sample;

and the total tolerance calculating and screening unit is used for calculating the total tolerance of each target color reference sample and the color sample to be tested, and screening all the target color reference samples with the total tolerance smaller than a preset value, namely the first screening color reference samples.

9. The system according to claim 8, wherein the interval filtering unit specifically includes:

and the interval screening subunit is used for screening the fabric color of which the color characteristic L value is in the contrast interval of the color characteristic L value, the color characteristic a value is in the contrast interval of the color characteristic a value, and the color characteristic b value is in the contrast interval of the color characteristic b value in the color database.

10. The system of claim 8, wherein the total tolerance calculation and filtering unit comprises:

the total tolerance calculating subunit is used for calculating the brightness difference, the saturation difference and the chromatic aberration of each target color reference sample and the color sample to be detected; and calculating the total tolerance according to the brightness difference, the saturation difference and the chromatic aberration.

Images