Printing and dyeing equipment and printing and dyeing process for camouflage braid

Abstract

The present application relates to image monitoring printing and dyeing technical field, especially to a kind of printing and dyeing equipment and printing and dyeing process of camouflaging ribbon, the present application is equipped with color verification unit based on the color profile of the image obtained and the average value of the color number in unit area Color evaluation value can be obtained, the color evaluation value can quickly determine whether the printing and dyeing equipment printing and dyeing operation meets the standard, improve the efficiency of printing and dyeing equipment printing and dyeing operation, the ratio of the actual average area of the printing and dyeing color obtained and the preset average area standard Secondary determine whether the printing and dyeing equipment printing and dyeing operation meets the standard, improve the precision of monitoring system. The difference between the color number in unit area obtained and the preset reference value can quickly determine the reason why the printing and dyeing equipment printing and dyeing process operation does not meet the standard, save the time to find out the reason, improve the efficiency of printing and dyeing equipment printing and dyeing operation.

Description

Technical Field

[0001] This invention relates to the field of image monitoring printing and dyeing technology, and in particular to a printing and dyeing equipment and process for camouflage webbing. Background Technology

[0002] There are many printing and dyeing processes for camouflage webbing. Among them, screen printing uses a screen as a base and a photosensitive plate-making method to create a screen printing plate with images and text. Screen printing consists of five main elements: screen printing plate, squeegee, ink, printing table, and substrate. It utilizes the basic principle that ink can pass through the mesh openings of the screen printing plate in the image areas, while ink cannot pass through the mesh openings in the non-image areas. During printing, ink is poured into one end of the screen printing plate, and a squeegee applies pressure to the ink areas while moving at a constant speed towards the other end. As it moves, the ink is forced through the mesh openings in the image areas onto the substrate. However, this method does not address the issue of image monitoring during the screen printing process to improve efficiency.

[0003] Chinese Patent Publication No. CN:103541232B discloses a manufacturing process for nylon camouflage fabric. The printing formula is as follows: per 100kg of color paste, there are 0.6-1.8kg of dispersant, 0.01-5.0kg of acidic agent, and 0.02-0.5kg of pigment. The baking process involves a speed of 35±1 m / min at a temperature of 165-170℃, and a steaming process at a speed of 10±1 m / min at a temperature of 101-105℃ for 30 minutes. The finishing process utilizes various auxiliaries with compatibility in waterproofing, breathability, oil repellency, and antistatic properties. The advantages of this invention are short production steps, good color consistency, excellent color fastness, bright colors, and low cost. It primarily uses environmentally friendly dyes, making it very suitable for higher-end products in infrared camouflage fabrics. However, this invention does not address the issue of improving efficiency through image monitoring of the printing and dyeing process. Summary of the Invention

[0004] Therefore, the present invention provides a dyeing and printing equipment and process for camouflage webbing, in order to overcome the problem of low operating efficiency of existing camouflage webbing dyeing and printing equipment.

[0005] To achieve the above objectives, the present invention provides a dyeing and printing equipment and process for camouflage webbing, comprising: The image acquisition unit includes an image sensor for acquiring the color outline of the camouflage webbing and the number of color types per unit area; The dye addition control unit is used to collect the dye addition mass value of the printing and dyeing equipment; The dye discharge port adjustment unit is used to collect the value of the dye discharge port diameter. The analysis and detection unit is connected to the image acquisition unit, the dye addition control unit and the dye outlet diameter adjustment unit respectively. It is used to monitor the printing and dyeing operation of the camouflage webbing printing and dyeing equipment in real time based on the acquired image color contour, the number of color types per unit area, the dye addition mass value and the dye discharge port diameter value. A color verification unit, connected to the analysis and detection unit, is used to determine if the camouflage webbing printing and dyeing equipment does not meet the standard when the color evaluation value calculated based on the acquired image color contour and the average number of color types per unit area is used; to determine if the printing and dyeing equipment does not meet the standard again when the ratio of the actual average area of ​​the acquired image printing color to the preset average area is used; to re-determine the color evaluation value benchmark; and to determine the reason for the non-compliance of the printing and dyeing equipment based on the difference between the acquired number of color types per unit area and the preset benchmark.

[0006] Furthermore, the formula for the color evaluation value is:

[0007] Where ω represents the color evaluation value, A represents the degree of overlap between the image color contour boundary obtained by the analysis and detection unit and the preset color contour boundary benchmark, A0 represents the preset overlap benchmark of the color verification unit; V represents the average number of color types per unit area obtained by the analysis and detection unit, and V0 represents the preset benchmark of the number of color types per unit area of ​​the color verification unit.

[0008] Furthermore, the color verification unit of the present invention preliminarily determines that the printing and dyeing operation of the printing and dyeing equipment does not meet the standard based on the acquired color evaluation value, and further determines whether the printing and dyeing operation of the printing and dyeing equipment meets the standard based on the ratio of the actual average area of ​​the acquired image printing and dyeing colors to the preset average area; or, determines the reason why the printing and dyeing operation of the printing and dyeing equipment does not meet the standard based on the difference between the number of color types per unit area and the preset benchmark.

[0009] Furthermore, the color verification unit of the present invention determines for the second time that the reason why the printing and dyeing equipment does not meet the standard is a problem with the color evaluation value benchmark based on the ratio of the actual average area of ​​the obtained image printing and dyeing colors to the preset average area benchmark, and re-determines the color evaluation value benchmark based on the average number of color types per unit area.

[0010] Furthermore, the color verification unit has several correction methods for the color evaluation value benchmark based on the difference between the actual average area of ​​the obtained image printing color and the preset benchmark, and the correction range of each correction method for the color evaluation value benchmark is different.

[0011] Furthermore, if the color verification unit determines that the reason for the non-compliance of the dyeing and printing equipment with the standard is insufficient dye addition quality, based on the difference between the number of color types per unit area and a preset benchmark, it will re-determine the dye addition quality based on the preset dye addition quality benchmark; and, If it is determined that the reason for the non-compliance of the dyeing and printing equipment with the standards is a blockage at the equipment's outlet, the outlet of the dyeing and printing equipment should be cleaned and then retested. If the reason for the non-compliance of the printing and dyeing equipment with the standard is determined to be the problem of excessive dye output causing smudging, the diameter of the dye feed inlet is re-determined based on the obtained dye addition quality.

[0012] Furthermore, the color verification unit has several adjustment methods for the dye addition quality based on the difference between the preset dye addition quality benchmark and the obtained dye addition quality, and each adjustment method has a different adjustment range for the dye addition quality.

[0013] Furthermore, the color verification unit has several adjustment methods for the diameter of the dye discharge port based on the difference between the obtained dye addition quality and the preset dye addition quality benchmark, and the adjustment range of each adjustment method for the diameter of the dye discharge port is different.

[0014] Furthermore, a printing and dyeing process for camouflage webbing is characterized by the following steps: Step 1: The image acquisition unit acquires the image color outline and the number of color types per unit area of ​​the camouflage webbing image sensor; Step 2: The dye addition control unit collects the dye addition mass value of the printing and dyeing equipment; Step 3: The dye inlet diameter adjustment unit collects the dye feed inlet diameter value; Step 4: The analysis and detection unit performs real-time monitoring of the printing and dyeing operation of the camouflage webbing printing and dyeing equipment based on the acquired image color contour, the number of color types per unit area, the dye addition mass value, and the dye discharge port diameter value. Step 5: The color verification unit determines that the camouflage webbing printing and dyeing equipment does not meet the standard if the color evaluation value calculated based on the acquired image color outline and the average number of color types per unit area is not in compliance with the standard. It then re-determines the color evaluation value benchmark based on the ratio of the actual average area of ​​the acquired image printing color to the preset average area. Finally, it determines the reason why the printing and dyeing equipment does not meet the standard based on the difference between the acquired number of color types per unit area and the preset benchmark.

[0015] Furthermore, the color verification unit stores the standard printing and dyeing equipment parameters in the cloud on a computer for later use.

[0016] Compared with existing technologies, the advantages of this invention are as follows: This invention, by incorporating a color verification unit, can obtain a color evaluation value based on the acquired image color contour and the average number of color types per unit area. This color evaluation value allows for rapid determination of whether the dyeing and printing equipment meets standards, improving the efficiency of the dyeing and printing equipment operation. Furthermore, by using the ratio of the actual average area of ​​the dyed colors to a preset average area, a secondary determination of whether the dyeing and printing equipment operation meets standards is made, improving the accuracy of the monitoring system. Finally, by using the difference between the number of color types per unit area and a preset benchmark, the reasons for non-compliance in the dyeing and printing process can be quickly identified, saving time in troubleshooting and further improving the efficiency of the dyeing and printing equipment operation.

[0017] Furthermore, this invention can quickly determine whether the printing and dyeing equipment does not meet the standards by obtaining color evaluation values. It can also quickly determine whether the printing and dyeing equipment meets the standards by comparing the actual average area of ​​the printed colors in the image with the preset average area benchmark, thereby improving the efficiency of the printing and dyeing equipment. At the same time, it can quickly determine the reason why the printing and dyeing equipment does not meet the standards by comparing the difference between the number of color types per unit area and the preset benchmark, saving time and improving the efficiency of the printing and dyeing equipment.

[0018] Furthermore, when the reason why the dyeing and printing equipment fails to meet the standard is a problem with the color evaluation value benchmark, the present invention can quickly redetermine the color evaluation value benchmark based on the average number of color types per unit area, thereby improving the accuracy of the dyeing and printing equipment operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the camouflage webbing printing and dyeing equipment described in this invention; Figure 2 This is a flowchart illustrating the process of determining whether the dyeing and printing equipment described in this invention meets the standards. Figure 3 This is a flowchart illustrating the secondary determination process to determine whether the dyeing and printing equipment described in this invention meets the standards. Figure 4 This is a flowchart illustrating the correction process for the color evaluation value benchmark described in this invention. Figure 5 This is a schematic diagram of the camouflage webbing after printing and dyeing by the printing and dyeing equipment according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the input end structure of the camouflage webbing printing and dyeing equipment according to an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0021] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0022] It should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Please see Figure 1 The diagram shown is a schematic representation of the printing and dyeing structure of the camouflage webbing printing and dyeing equipment of the present invention. The camouflage webbing printing and dyeing equipment of the present invention includes: Image acquisition unit 1 includes an image sensor for acquiring the color outline of camouflage webbing and the number of color types per unit area; Dye addition control unit 2 is used to collect the dye addition mass value of the printing and dyeing equipment. Dye inlet diameter adjustment unit 3, which is used to collect the value of the dye inlet diameter; Analysis and detection unit 4 is connected to the image acquisition unit, dye addition control unit and dye outlet diameter adjustment unit respectively, and is used to monitor the printing and dyeing operation of the camouflage webbing printing and dyeing equipment in real time based on the acquired image color contour, the number of color types per unit area, the dye addition mass value and the dye discharge port diameter value. The color verification unit 5, connected to the analysis and detection unit, is used to determine if the camouflage webbing printing and dyeing equipment does not meet the standard when the color evaluation value calculated based on the acquired image color contour and the average number of color types per unit area is used; to determine if the printing and dyeing equipment does not meet the standard again when the actual average area of ​​the acquired image printing and dyeing color is compared with the preset average area; to re-determine the color evaluation value benchmark; and to determine the reason for the non-compliance of the printing and dyeing equipment based on the difference between the acquired number of color types per unit area and the preset benchmark.

[0024] Specifically, the formula for the color evaluation value is:

[0025] Where ω represents the color evaluation value, A represents the degree of overlap between the image color contour boundary obtained by the analysis and detection unit and the preset color contour boundary benchmark, A0 represents the preset overlap benchmark of the color verification unit; V represents the average number of color types per unit area obtained by the analysis and detection unit, and V0 represents the preset benchmark of the number of color types per unit area of ​​the color verification unit.

[0026] Please see Figure 2 As shown, this is a flowchart illustrating the determination process for whether the printing and dyeing equipment of the present invention meets the standards. The color verification unit of the present invention determines whether the printing and dyeing equipment meets the standards based on the acquired color evaluation values, wherein: If the color evaluation value is less than or equal to the preset first benchmark, the color verification unit determines that the printing and dyeing equipment meets the standard and continues to monitor it. If the color evaluation value is greater than the preset first benchmark and less than or equal to the preset second benchmark, the color verification unit initially determines that the printing and dyeing equipment does not meet the standard, and then determines whether the printing and dyeing equipment meets the standard again based on the ratio of the actual average area of ​​the printed and dyed color in the acquired image to the preset average area. If the color evaluation value is greater than the preset second benchmark, the color verification unit determines that the printing and dyeing equipment does not meet the standard, and determines the reason why the printing and dyeing equipment does not meet the standard based on the difference between the number of color types per unit area and the preset benchmark.

[0027] Please see Figure 3 As shown, this is a flowchart illustrating the secondary determination process for whether the printing and dyeing equipment of the present invention meets the standards. The color verification unit of the present invention determines whether the printing and dyeing operation of the equipment meets the standards based on the ratio of the actual average area of ​​the acquired image printing and dyeing color to the preset average area, wherein: If the ratio is less than or equal to the preset benchmark, the color verification unit determines that the reason why the printing and dyeing equipment does not meet the standard is a problem with the color evaluation value benchmark, and redetermines the color evaluation value benchmark based on the average number of color types per unit area. If the ratio is greater than a preset benchmark, the color verification unit determines that the printing and dyeing equipment meets the standard and continues to perform testing.

[0028] Please see Figure 4 As shown, this is a flowchart of the correction process for the color evaluation value benchmark of the present invention. The color verification unit of the present invention has several correction methods for the color evaluation value benchmark based on the difference between the actual average area of ​​the obtained image printing color and the preset benchmark, wherein: If the difference is less than or equal to the preset first difference benchmark, the color verification unit uses the first correction coefficient α1 to correct the color evaluation value button to the corresponding value. If the difference is greater than the preset first difference benchmark and less than or equal to the preset second difference benchmark, the color verification unit uses the second correction coefficient α2 to correct the color evaluation value button to the corresponding value; If the difference is greater than the preset second difference benchmark, the color verification unit uses the third correction coefficient α3 to correct the color evaluation value button to the corresponding value. The correction formula used in this invention is K=k×α. n Where k is the preset color evaluation value benchmark before correction, K is the color evaluation value benchmark after correction, n is a positive integer, and α n As preset correction coefficients, this invention sets α1=0.99; α2=0.98; α3=0.97.

[0029] Please continue reading. Figures 1 to 6 As shown, specifically, the color verification unit of this invention determines the reason why the printing and dyeing equipment does not meet the standard based on the difference between the number of color types per unit area and a preset benchmark, wherein: If the difference is less than or equal to the preset first benchmark, the color verification unit determines that the reason why the printing and dyeing equipment does not meet the standard is that the dye addition quality is insufficient, and redetermines the dye addition quality based on the preset dye addition quality benchmark. If the difference is greater than the preset first benchmark and less than or equal to the preset second benchmark, the color verification unit determines that the reason why the printing and dyeing equipment does not meet the standard is that the equipment outlet is blocked. After cleaning the printing and dyeing equipment outlet, the test is repeated. If the difference is greater than the preset second benchmark, the color verification unit determines that the reason why the printing and dyeing equipment does not meet the standard is that the dye output is too much and causes smudging. Based on the obtained dye addition quality, the dye feed port diameter value is re-determined.

[0030] Specifically, the color verification unit of the present invention has several adjustment methods for the dye addition quality based on the difference between a preset dye addition quality benchmark and the obtained dye addition quality, wherein: If the image clarity is less than or equal to a preset first benchmark, the color verification unit uses the first adjustment coefficient β1 to adjust the dye quality button to the corresponding value. If the image clarity is greater than a preset first benchmark and less than or equal to a preset second benchmark, the color verification unit uses a second adjustment coefficient β2 to adjust the dye quality to the corresponding value. If the image clarity is greater than the preset second benchmark, the color verification unit uses the third adjustment coefficient β3 to adjust the dye quality button to the corresponding value.

[0031] The adjustment formula used in this invention is G=g×β nWhere g is the preset dye addition mass before adjustment, G is the dye addition mass after adjustment, n is a positive integer, and β n The preset adjustment coefficients are set as follows: β1=0.98; β2=0.96; β3=0.94.

[0032] Specifically, the color verification unit of the present invention has several adjustment methods for the diameter of the dye feed inlet based on the difference between the acquired dye addition mass and the preset dye addition mass benchmark, wherein: If the difference is less than or equal to the preset first benchmark, the color verification unit uses the first adjustment coefficient γ1 to adjust the dye feed port diameter button to the corresponding value. If the difference is greater than the preset first benchmark and less than or equal to the preset second benchmark, the color verification unit uses the second adjustment coefficient γ2 to adjust the dye feed port diameter button to the corresponding value. If the difference is greater than the preset second benchmark, the color verification unit uses the third adjustment coefficient γ3 to adjust the dye feed port diameter button to the corresponding value.

[0033] The adjustment formula used in this invention is R=r×γ n Where r is the preset diameter of the dye inlet before adjustment, R is the adjusted diameter of the dye inlet, n is a positive integer, and γ n As preset adjustment coefficients, this invention sets γ1=1.08; γ2=0.99; γ3=0.89.

[0034] Specifically, a printing and dyeing process for camouflage webbing is characterized by the following steps: Step 1: The image acquisition unit acquires the image color outline and the number of color types per unit area of ​​the camouflage webbing image sensor; Step 2: The dye addition control unit collects the dye addition mass value of the printing and dyeing equipment; Step 3: The dye inlet diameter adjustment unit collects the dye feed inlet diameter value; Step 4: The analysis and detection unit performs real-time monitoring of the printing and dyeing operation of the camouflage webbing printing and dyeing equipment based on the acquired image color contour, the number of color types per unit area, the dye addition mass value, and the dye discharge port diameter value. Step 5: The color verification unit determines that the camouflage webbing printing and dyeing equipment does not meet the standard if the color evaluation value calculated based on the acquired image color outline and the average number of color types per unit area is not in compliance with the standard. It then determines the color evaluation value benchmark again based on the ratio of the actual average area of ​​the acquired image printing and dyeing colors to the preset average area. Finally, it determines the reason why the printing and dyeing equipment does not meet the standard based on the color evaluation value.

[0035] Specifically, the color verification unit of the present invention stores the printing and dyeing parameters of the printing and dyeing equipment that conform to the standard in the cloud of an electronic computer for later use.

[0036] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A dyeing and printing device for camouflage webbing, characterized in that, include: An image acquisition unit includes an image sensor for acquiring the color outline of camouflage webbing and the number of color types per unit area; The dye addition control unit is used to collect the dye addition mass value of the printing and dyeing equipment; The dye discharge port adjustment unit is used to collect the value of the dye discharge port diameter. The analysis and detection unit is connected to the image acquisition unit, the dye addition control unit and the dye outlet diameter adjustment unit respectively. It is used to monitor the printing and dyeing operation of the camouflage webbing printing and dyeing equipment in real time based on the acquired image color contour, the number of color types per unit area, the dye addition mass value and the dye discharge port diameter value. A color verification unit, connected to the analysis and detection unit, is used to determine if the camouflage webbing printing and dyeing equipment does not meet the standard when the color evaluation value calculated based on the acquired image color contour and the average number of color types per unit area is used; to determine if the printing and dyeing equipment does not meet the standard when the actual average area of ​​the acquired image printing color is determined to be non-compliant with the preset average area; to re-determine the color evaluation value benchmark when the printing and dyeing equipment does not meet the standard when the actual average area of ​​the acquired image printing color is determined to be non-compliant with the preset average area; and to determine the reason for the non-compliance of the printing and dyeing equipment when the difference between the acquired number of color types per unit area and the preset benchmark is used. The formula for the color evaluation value is as follows: Where ω represents the color evaluation value, A represents the degree of overlap between the image color contour boundary obtained by the analysis and detection unit and the preset color contour boundary benchmark, A0 represents the preset overlap benchmark of the color verification unit; V represents the average number of color types per unit area obtained by the analysis and detection unit, and V0 represents the preset benchmark of the number of color types per unit area of ​​the color verification unit.

2. The printing and dyeing equipment for camouflage webbing according to claim 1, characterized in that, When the color verification unit determines that the reason why the printing and dyeing equipment does not meet the standard is a problem with the color evaluation value benchmark, it re-determines the color evaluation value benchmark based on the average number of color types per unit area obtained by the color verification unit, based on the ratio of the actual average area of ​​the obtained image printing and dyeing colors to the preset average area benchmark.

3. The printing and dyeing equipment for camouflage webbing according to claim 2, characterized in that, The color verification unit has several correction methods for the color evaluation value benchmark based on the difference between the actual average area of ​​the obtained image printing color and the preset benchmark, and the correction range of each correction method for the color evaluation value benchmark is different.

4. The printing and dyeing equipment for camouflage webbing according to claim 3, characterized in that, If the color verification unit determines that the reason for the non-compliance of the printing and dyeing equipment with the standard is insufficient dye addition quality, based on the difference between the number of color types obtained per unit area and the preset benchmark, the dye addition quality will be re-determined based on the preset dye addition quality benchmark. as well as, If it is determined that the reason for the non-compliance of the dyeing and printing equipment with the standards is a blockage at the equipment's outlet, the outlet of the dyeing and printing equipment should be cleaned and then retested. If the reason for the non-compliance of the printing and dyeing equipment with the standard is determined to be the problem of excessive dye output causing smudging, the diameter of the dye feed inlet is re-determined based on the obtained dye addition quality.

5. The printing and dyeing equipment for camouflage webbing according to claim 4, characterized in that, The color verification unit has several adjustment methods for the dye addition quality based on the difference between the preset dye addition quality benchmark and the obtained dye addition quality, and each adjustment method has a different adjustment range for the dye addition quality.

6. The printing and dyeing equipment for camouflage webbing according to claim 4, characterized in that, The color verification unit has several adjustment methods for the diameter of the dye discharge port based on the difference between the obtained dye addition quality and the preset dye addition quality benchmark, and the adjustment range of each adjustment method for the diameter of the dye discharge port is different.

7. The printing and dyeing equipment for camouflage webbing according to claim 6, characterized in that, The color verification unit stores the standard printing and dyeing parameters of the printing and dyeing equipment in the cloud for later use.

8. A printing and dyeing process for camouflage webbing based on the device described in any one of claims 1-7, characterized in that, include: Step 1: The image acquisition unit acquires the color outline of the camouflage webbing and the number of color types per unit area; Step 2: The dye addition control unit collects the dye addition mass value of the printing and dyeing equipment; Step 3: The dye inlet diameter adjustment unit collects the dye feed inlet diameter value; Step 4: The analysis and detection unit performs real-time monitoring of the printing and dyeing operation of the camouflage webbing printing and dyeing equipment based on the acquired image color contour, the number of color types per unit area, the dye addition mass value, and the dye discharge port diameter value. Step 5: The color verification unit determines that the camouflage webbing printing and dyeing equipment does not meet the standard if the color evaluation value calculated based on the acquired image color outline and the average number of color types per unit area is not in compliance with the standard. It then re-determines the color evaluation value benchmark based on the ratio of the actual average area of ​​the acquired image printing color to the preset average area. Finally, it determines the reason why the printing and dyeing equipment does not meet the standard based on the difference between the acquired number of color types per unit area and the preset benchmark. The formula for the color evaluation value is as follows: Where ω represents the color evaluation value, A represents the degree of overlap between the image color contour boundary obtained by the analysis and detection unit and the preset color contour boundary benchmark, A0 represents the preset overlap benchmark of the color verification unit; V represents the average number of color types per unit area obtained by the analysis and detection unit, and V0 represents the preset benchmark of the number of color types per unit area of ​​the color verification unit.

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