Apparatus and method for calibrating dye recipe

Abstract

An apparatus and method for correcting a dye prescription are disclosed. An apparatus for correcting a dye prescription according to one aspect of the present invention comprises a memory for storing at least one instruction and a processor for executing at least one instruction stored in the memory, wherein the processor corrects the dye prescription based on absorbance data for an electronic color value of a target color and absorbance data for each of the monochromatic dyes constituting a mixed dye generated according to a dye prescription for the target color.

Description

Technology Field

[0001] The present invention relates to a dye prescription correction device and method. Background Technology

[0003] To reproduce the buyer's ordered color, on-site operators select 3 to 6 single-color dyes currently used at the factory and calculate the dye formulation through simulation. This dye formulation is calculated based on simulations derived from previously entered basic data. Based on the multiple dye formulations recommended through this simulation, a B / T (Batch Test) is conducted. The B / T test verifies whether the color is reproduced; if the color is successfully reproduced, the corresponding dye formulation is issued to the site via a prescription. However, since on-site dyeing is not performed at a laboratory level, scale-up occurs, and color differences arise due to various factors. When a color difference occurs, CCM (Color Control Center) measurement is performed to compare the results with the buyer's order data, analyze the deviation information, and correct the color difference.

[0004] Meanwhile, although dye formulations are calculated using various conventional methods (such as simulations using CCM colorimetric systems and simulations using AI models), the formulations calculated through these conventional methods still contain significant errors, and accordingly, technology capable of correcting dye formulations is required.

[0005] The background technology of the present invention is disclosed in Korean Registered Patent Publication No. 10-2035059 (October 16, 2019). The problem to be solved

[0007] An objective according to one aspect of the present invention is to provide a dye prescription correction apparatus and method capable of comparing absorbance data for an electronic color value of a target color according to a customer's request with absorbance data for each of the monochromatic dyes constituting a mixed dye generated according to a dye prescription for the target color, and correcting the dye prescription based on the result of the comparison. means of solving the problem

[0009] A dye prescription correction device according to one aspect of the present invention comprises: a memory storing at least one command; and a processor executing the at least one command stored in the memory, wherein the processor corrects the dye prescription based on absorbance data for an electronic color value of a target color and absorbance data for each of the monochromatic dyes constituting a mixed dye generated according to the dye prescription for the target color.

[0010] In the present invention, the processor generates absorbance data for the mixed dye based on absorbance data for each of the monochromatic dyes, and performs the process of detecting a maximum absorbance wavelength value defined as the wavelength value having the greatest absorbance from the absorbance data for each of the monochromatic dyes, respectively, for the electronic color value, the monochromatic dyes, and the mixed dye; determines a ranking among the monochromatic dyes based on the maximum absorbance wavelength value for each of the monochromatic dyes and the electronic color value, and corrects the dye prescription for the first-ranked monochromatic dye based on the maximum absorbance wavelength value for the electronic color value and the mixed dye.

[0011] In the present invention, the processor is characterized by determining the monochromatic dye having the maximum absorbance wavelength value with the smallest difference from the maximum absorbance wavelength value for the electronic color value as the first-rank monochromatic dye.

[0012] In the present invention, the processor is characterized by changing the first-ranked monochromatic dye to another monochromatic dye belonging to the same dye series when the difference between the electronic color value and the maximum absorbance wavelength value for the mixed dye is greater than or equal to a preset first reference value.

[0013] In the present invention, the processor detects a monochromatic dye among monochromatic dyes belonging to a dye group of the same series as the first-rank monochromatic dye, a mixed dye in which the monochromatic dye is the first-rank monochromatic dye, and a monochromatic dye having the smallest difference between the maximum absorbance wavelength value for the electronic color value, and sets the detected monochromatic dye as a new first-rank monochromatic dye.

[0014] In the present invention, the processor is characterized by performing a process of detecting a maximum absorbance, defined as the absorbance at the maximum absorbance wavelength value, from the absorbance data for the electronic color value and the mixed dye, respectively, and changing the concentration of the first-rank monochromatic dye so that the maximum absorbances for the electronic color value and the mixed dye match each other.

[0015] In the present invention, the processor is characterized by increasing the concentration of the first-rank monochromatic dye when the maximum absorbance for the electronic color value is greater than the maximum absorbance for the mixed dye, and decreasing the concentration of the first-rank monochromatic dye when the maximum absorbance for the electronic color value is less than the maximum absorbance for the mixed dye.

[0016] In the present invention, the processor is characterized by correcting the dye prescription for a second-order monochromatic dye based on the electronic color value and the maximum absorbance wavelength value for the mixed dye.

[0017] In the present invention, the processor sets a wavelength range centered on the maximum absorbance wavelength value for the second-ranked monochromatic dye and having a preset size as a reference wavelength range, calculates a first calculated value defined as the value obtained by integrating the absolute value of the deviation between the electronic color value and the absorbance of the mixed dye over the reference wavelength range, calculates a second calculated value defined as the absolute value of the value obtained by integrating the deviation between the electronic color value and the absorbance of the mixed dye over the reference wavelength range, and corrects the dye prescription for the second-ranked monochromatic dye based on the first and second calculated values.

[0018] In the present invention, the processor is characterized by changing the second-ranked monochromatic dye to another monochromatic dye belonging to the same dye series when the value obtained by subtracting the second calculated value from the first calculated value is greater than or equal to a preset second reference value.

[0019] In the present invention, the processor detects the monochromatic dye with the smallest value obtained by subtracting the second calculated value calculated for a mixed dye from the first calculated value calculated for a mixed dye in which the monochromatic dye is the second-ranked monochromatic dye among monochromatic dyes belonging to the same dye series group as the second-ranked monochromatic dye, and sets the detected monochromatic dye as a new second-ranked monochromatic dye.

[0020] In the present invention, the processor is characterized by, after correcting the dye prescription for the second-ranked monochromatic dye, calculating a third calculated value defined as the value obtained by integrating the absolute value of the deviation between the electronic color value and the absorbance of the mixed dye over a preset effective wavelength range, and changing the concentration of each of the monochromatic dyes so that the third calculated value is less than or equal to a preset third reference value.

[0021] A dye formulation correction method according to one aspect of the present invention is characterized by comprising: receiving absorbance data for an electronic color value of a target color and absorbance data for each of the monochromatic dyes constituting a mixed dye generated according to the dye formulation for the target color; and correcting the dye formulation based on the absorbance data for the electronic color value and the absorbance data for each of the monochromatic dyes. Effects of the invention

[0023] According to one aspect of the present invention, the present invention can compare absorbance data for an electronic color value of a target color according to a customer's request with absorbance data for each of the monochromatic dyes constituting a mixed dye generated according to a dye formulation for the target color, and correct the dye formulation based on the result of the comparison.

[0024] Meanwhile, the effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description below. Brief explanation of the drawing

[0026] FIG. 1 is a block diagram showing a dye prescription correction device according to an embodiment of the present invention. FIG. 2 is a flowchart showing a dye formulation correction method according to an embodiment of the present invention. FIG. 3 is an illustrative diagram for explaining a dye formulation correction method according to an embodiment of the present invention. FIG. 4 is a flowchart showing a method for correcting a dye formulation for a first-order monochromatic dye according to an embodiment of the present invention. FIGS. 5 and 6 are illustrative diagrams for explaining a method for correcting a dye formulation for a first-order monochromatic dye according to an embodiment of the present invention. FIG. 7 is a flowchart showing a method for correcting a dye formulation for a second-order monochromatic dye according to an embodiment of the present invention. FIG. 8 is an illustrative diagram for explaining a method for correcting a dye formulation for a second-order monochromatic dye according to an embodiment of the present invention. FIG. 9 is a flowchart showing a method for correcting a dye formulation for each of the monochromatic dyes according to an embodiment of the present invention. FIG. 10 is an illustrative diagram for explaining a method of correcting a dye formulation for each of the monochromatic dyes according to an embodiment of the present invention. Specific details for implementing the invention

[0027] Hereinafter, a dye formulation correction device and method according to an embodiment of the present invention will be described in detail with reference to the attached drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intention or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0029] FIG. 1 is a block diagram showing a dye prescription correction device according to an embodiment of the present invention.

[0030] Referring to FIG. 1, a dye prescription correction device (100) according to an embodiment of the present invention may include a memory (110) and a processor (120). The dye prescription correction device (100) according to an embodiment of the present invention may include various additional components in addition to the components shown in FIG. 1, or may omit some of the above components. For example, the dye prescription correction device (100) according to an embodiment of the present invention may further include an input / output interface for receiving arbitrary data or outputting data calculated by the processor (120), a user interface for interacting with a user, etc.

[0031] At least one instruction to be executed by the processor (120) may be stored in the memory (110). This memory (110) may be implemented as a volatile storage medium and / or a non-volatile storage medium, for example, as a read-only memory (ROM) and / or random access memory (RAM).

[0032] Various information required during the operation of the processor (120) may be stored in the memory (110). For example, a knowledge base related to a mission to be performed may be stored in the memory (110). Various information generated during the operation of the processor (120) may be stored in the memory (110).

[0033] The processor (120) may be implemented as a Central Processing Unit (CPU) or a System on Chip (SoC), and may control multiple hardware or software components connected to the processor (120) by running an operating system or application, and may perform various data processing and operations. The processor (120) may be configured to execute at least one instruction stored in memory (110) and store the execution result data in memory (110).

[0034] The processor (120) can correct the dye prescription based on absorbance data for the electronic color value of the target color and absorbance data for each of the monochromatic dyes constituting the mixed dye generated according to the dye prescription for the target color. Here, the target color is a color requested by the customer and may refer to a color intended to be realized through the dyeing process. The electronic color value is a CCM (Computer Color Matching) color measurement value for the target color and may refer to a color determined according to a QTX file. The absorbance data may refer to data in which relationship information regarding absorbance (or absorption rate) according to wavelength at a specific concentration is stored.

[0035] Hereinafter, based on the above description, a dye prescription correction method according to an embodiment of the present invention will be examined focusing on the operation of the processor (120). Some of the processes described below may be performed in a different order than the order described below or omitted.

[0037] FIG. 2 is a flowchart showing a dye formulation correction method according to an embodiment of the present invention, and FIG. 3 is an illustrative diagram for explaining a dye formulation correction method according to an embodiment of the present invention.

[0038] Referring to FIG. 2, first, the processor (120) can receive absorbance data for the electronic color value of the target color and absorbance data for each of the monochromatic dyes constituting the mixed dye generated according to the dye prescription for the target color (S201). At this time, the processor (120) can receive absorbance data for the monochromatic dye having a concentration according to the dye prescription, as well as absorbance data for the monochromatic dye having an arbitrary concentration, that is, absorbance data by concentration for the monochromatic dye. In addition, the processor (120) can receive absorbance data for each of the monochromatic dyes belonging to the same dye group as the monochromatic dye included in the mixed dye generated according to the dye prescription. In addition, the processor (120) can receive data regarding the dye prescription.

[0039] The processor (120) can receive necessary absorbance data from an external device capable of calculating absorbance data or an external device in which absorbance data is stored. Meanwhile, for convenience of explanation, "electronic color value of target color" will be described as "electronic color value," "mixed dye generated according to a dye prescription for target color" as "mixed dye," and "monochromatic dye constituting the mixed dye generated according to a dye prescription for target color" as "monochromatic dye." Additionally, unless otherwise specified below, "absorbance data for monochromatic dye" may be understood as "absorbance data for monochromatic dye having a concentration determined according to a dye prescription."

[0040] Next, the processor (120) can generate absorbance data for the mixed dye based on absorbance data for each of the single dyes (S203). At this time, the processor (120) can generate absorbance data for the mixed dye by summing the absorbance data for each of the single dyes.

[0041] For example, as shown in FIG. 3, assuming that the summation consists of first to third monochromatic dyes (dye 1, dye 2, and dye 3), the absorbance for the summation at wavelength a can be calculated as the sum of the absorbance for the first monochromatic dye (dye 1) at wavelength a, the absorbance for the second monochromatic dye (dye 2) at wavelength a, and the absorbance for the third monochromatic dye (dye 3) at wavelength a.

[0042] Next, the processor (120) can perform the process of detecting the maximum absorbance wavelength value from the absorbance data for the electronic color value, the monochromatic dyes, and the mixed dye, respectively (S205). Here, the maximum absorbance wavelength value can be defined as the wavelength value having the greatest absorbance.

[0043] For example, as shown in Fig. 3, assuming that the absorbance for the electronic color value (water color) increases in the 400–550 nm range and decreases in the 550–700 nm range, the maximum absorbance wavelength value for the electronic color value may be 550 nm.

[0044] Next, the processor (120) can determine the ranking among the monochromatic dyes based on the maximum absorbance wavelength value for each monochromatic dye and the maximum absorbance wavelength value for the electronic color value (S207). The processor (120) can determine the monochromatic dye having the smallest maximum absorbance wavelength value with the smallest difference (distance) from the maximum absorbance wavelength value for the electronic color value as the first-rank monochromatic dye. The processor (120) can determine the monochromatic dye having the next smallest difference from the maximum absorbance wavelength value for the electronic color value as the second-rank monochromatic dye.

[0045] For example, as shown in FIG. 3, if we assume that when monochromatic dyes are arranged in order of smallest difference from the maximum absorbance wavelength value for the electronic color value, the order is a second monochromatic dye (dye 2), a third monochromatic dye (dye 3), and a first monochromatic dye (dye 1), the processor (120) can determine the second monochromatic dye as the first-rank monochromatic dye, determine the third monochromatic dye as the second-rank monochromatic dye, and determine the first monochromatic dye as the third-rank monochromatic dye.

[0046] Next, the processor (120) can correct the dye prescription for the first-rank monochromatic dye based on the maximum absorbance wavelength value for the electronic color value and the maximum absorbance wavelength value for the mixed dye (S209). A specific method for correcting the dye prescription for the first-rank monochromatic dye will be described later.

[0047] Next, the processor (120) can correct the dye prescription for the second-rank monochromatic dye based on the maximum absorbance wavelength value for the electronic color value and the maximum absorbance wavelength value for the mixed dye (S211). A specific method for correcting the dye prescription for the second-rank monochromatic dye will be described later.

[0048] Next, the processor (120) can correct the dye prescription for each of the monochromatic dyes based on the maximum absorbance wavelength value for the electronic color value and the maximum absorbance wavelength value for the mixed dye (S213). A specific method for correcting the dye prescription for each of the monochromatic dyes will be described later.

[0050] FIG. 4 is a flowchart showing a method for correcting a dye formulation for a first-priority monochromatic dye according to an embodiment of the present invention, and FIG. 5 and FIG. 6 are illustrative diagrams for explaining a method for correcting a dye formulation for a first-priority monochromatic dye according to an embodiment of the present invention.

[0051] Referring to FIG. 4, first, the processor (120) can determine whether the difference between the maximum absorbance wavelength value for the electronic color value and the maximum absorbance wavelength value for the mixed dye is greater than or equal to a preset first reference value (S401).

[0052] If the difference between the maximum absorbance wavelength value for the electronic color value and the maximum absorbance wavelength value for the mixed dye is greater than or equal to the first reference value, the processor (120) may change the first-ranked monochromatic dye to another monochromatic dye belonging to the same dye series group (S403). If the difference between the maximum absorbance wavelength value for the electronic color value and the maximum absorbance wavelength value for the mixed dye is greater than or equal to the first reference value, it is difficult to reduce the overall absorbance difference between the electronic color value and the mixed dye to below the allowable limit by adjusting only the concentration of the first-ranked monochromatic dye. Therefore, in this case, the present embodiment may perform a correction of the dye formulation by changing the first-ranked monochromatic dye, which is the dye that has the greatest influence on the absorbance of the mixed dye, to another monochromatic dye. When changing the first-ranked monochromatic dye to another monochromatic dye, the processor (120) may change it to a monochromatic dye having the same concentration as the existing first-ranked monochromatic dye.

[0053] For example, as shown in FIG. 5, the second monochromatic dye (dye 2) is the first-order monochromatic dye, and the maximum absorbance wavelength value (water column λ) for the electronic color value max ) and maximum absorbance wavelength values ​​(summation λ) for mixed dyes max Assuming that the difference (ΔT) between ) is greater than or equal to the first reference value (ΔP), the processor (120) can change the second monochromatic dye (dye 2), which is the first-rank monochromatic dye, to another monochromatic dye belonging to the same dye series group. Monochromatic dyes can be classified into series (groups) based on color, and information on which monochromatic dye belongs to which series may be pre-set.

[0054] At this time, the processor (120) can detect the monochromatic dye among the monochromatic dyes belonging to the dye group of the same series as the first-rank monochromatic dye that has the smallest difference between the maximum absorbance wavelength value for a mixed dye in which the monochromatic dye is the first-rank monochromatic dye and the maximum absorbance wavelength value for an electronic color value, and set the detected monochromatic dye as the new first-rank monochromatic dye. The processor (120) can detect a new monochromatic dye to replace the existing first-rank monochromatic dye by performing a process of calculating the difference between the maximum absorbance wavelength value for a mixed dye composed of the monochromatic dye instead of the existing first-rank monochromatic dye and the maximum absorbance wavelength value for an electronic color value for each of the monochromatic dyes belonging to the dye group of the same series as the existing first-rank monochromatic dye, and by comparing the results. At this time, the processor (120) can perform the aforementioned process under the same concentration conditions as the concentration of the existing first-rank monochromatic dye.

[0055] When the difference between the maximum absorbance wavelength value for the electronic color value and the maximum absorbance wavelength value for the mixed dye is not greater than or equal to a first reference value, or after changing the first-ranked monochromatic dye to another monochromatic dye, the processor (120) may perform the process of detecting the maximum absorbance from the absorbance data for the electronic color value and the mixed dye, respectively (S405). Here, the maximum absorbance may be defined as the absorbance at the maximum absorbance wavelength value.

[0056] Next, the processor (120) can change the concentration of the first-rank monochromatic dye so that the maximum absorbance for the electronic color value and the maximum absorbance for the mixed dye match each other (S407). At this time, the processor (120) can increase the concentration of the first-rank monochromatic dye when the maximum absorbance for the electronic color value is greater than the maximum absorbance for the mixed dye, and decrease the concentration of the first-rank monochromatic dye when the maximum absorbance for the electronic color value is less than the maximum absorbance for the mixed dye.

[0057] For example, as illustrated in FIG. 6a, if the second monochromatic dye, which is the first monochromatic dye, is changed to a new monochromatic dye and the maximum absorbance for the electronic color value (water level) is assumed to be greater than the maximum absorbance for the summation dye, the processor (120) can increase the concentration of the second monochromatic dye, which is the first monochromatic dye, so that the maximum absorbance for the electronic color value (water level) and the maximum absorbance for the summation dye match each other.

[0058] Additionally, as illustrated in FIG. 6b, if the second monochromatic dye, which is the first monochromatic dye, is changed to a new monochromatic dye and the maximum absorbance for the electronic color value (water level) is assumed to be smaller than the maximum absorbance for the mixed dye (summation), the processor (120) can reduce the concentration of the second monochromatic dye, which is the first monochromatic dye, so that the maximum absorbance for the electronic color value (water level) and the maximum absorbance for the mixed dye (summation) match each other.

[0059] The processor (120) can match the maximum absorbance for the electronic color value and the maximum absorbance for the mixed dye by repeating the process of changing the concentration of the first-rank monochromatic dye, the process of calculating the maximum absorbance for the mixed dye composed of the first-rank monochromatic dye with the changed concentration, and the process of comparing the maximum absorbance for the new mixed dye with the maximum absorbance for the electronic color value.

[0061] FIG. 7 is a flowchart showing a method for correcting a dye formulation for a second-rank monochromatic dye according to an embodiment of the present invention, and FIG. 8 is an illustrative diagram for explaining a method for correcting a dye formulation for a second-rank monochromatic dye according to an embodiment of the present invention.

[0062] Referring to FIG. 7, first, the processor (120) can set a wavelength range centered on the maximum absorbance wavelength value for the second-rank monochromatic dye and a preset size as the reference wavelength range (S701). For example, assuming that the maximum absorbance wavelength value for the second-rank monochromatic dye is 500 nm and the preset size is 100 nm, the processor (120) can set a wavelength range of 450 to 550 nm as the reference wavelength range.

[0063] Subsequently, the processor (120) can calculate a first calculated value from the absorbance data for the electronic color value and the mixed dye, which is defined as the value obtained by integrating the absolute value of the deviation between the absorbance for the electronic color value and the absorbance for the mixed dye over a reference wavelength range (S703). For example, the absorbance for the electronic color value is A, the absorbance for the mixed dye is B, and the time point of the reference wavelength range is λ s and the endpoint of the reference wavelength interval is λ e Assuming that, the second calculated value (Abs(A)) can be defined by the following mathematical formula 1.

[0064]

[0065] Subsequently, the processor (120) can calculate a second calculated value from the absorbance data for the electronic color value and the mixed dye, which is defined as the absolute value of the value obtained by integrating the deviation between the absorbance for the electronic color value and the absorbance for the mixed dye over a reference wavelength range (S705). For example, the absorbance for the electronic color value is A, the absorbance for the mixed dye is B, and the time point of the reference wavelength range is λ s and the endpoint of the reference wavelength interval is λ e Assuming that, the second calculated value (Abs(A)) can be defined by the following mathematical formula 2.

[0066]

[0067] Next, the processor (120) can determine whether the value obtained by subtracting the second calculated value from the first calculated value is greater than or equal to a preset second reference value (S707).

[0068] If the value obtained by subtracting the second calculated value from the first calculated value is not greater than or equal to the second reference value, the processor (120) may terminate the process. On the other hand, if the value obtained by subtracting the second calculated value from the first calculated value is greater than or equal to the second reference value, the processor (120) may change the second-ranked monochromatic dye to another monochromatic dye belonging to the same dye series group (S709). If the value obtained by subtracting the second calculated value from the first calculated value is greater than or equal to the second reference value, it is difficult to keep the overall absorbance difference between the electronic color value and the mixed dye below an allowable limit by only adjusting the concentration of the second-ranked monochromatic. Therefore, in this case, the present embodiment may perform a correction for the dye formulation by performing a correction that changes the second-ranked monochromatic dye to another monochromatic dye.

[0069] For example, as illustrated in FIG. 8, assuming that the third single-color dye (dye 3) is a second-rank single-color dye and the value obtained by comparing the second calculated value to the first calculated value is greater than or equal to the second reference value, the processor (120) can change the third single-color dye (dye 3), which is the second-rank single-color dye, to another single-color dye belonging to the same series of dyes.

[0070] At this time, the processor (120) can detect the single dye with the smallest value obtained by subtracting the second calculated value for the mixed dye from the first calculated value for the mixed dye in which the single dye is the second-ranked single dye among the single dyes belonging to the dye group of the same series as the second-ranked single dye, and set the detected single dye as the new second-ranked single dye. The processor (120) can detect a new single dye to replace the existing second-ranked single dye by performing the process of calculating the value obtained by subtracting the second calculated value for the mixed dye from the first calculated value for the mixed dye composed of the single dye instead of the existing second-ranked single dye, for each of the single dyes belonging to the dye group of the same series as the existing second-ranked single dye, and by comparing the results. At this time, the processor (120) can perform the aforementioned process under the same concentration conditions as the concentration of the existing first-ranked single dye.

[0072] FIG. 9 is a flowchart showing a method for correcting a dye formulation for each of the monochromatic dyes according to an embodiment of the present invention, and FIG. 10 is an illustrative diagram for explaining a method for correcting a dye formulation for each of the monochromatic dyes according to an embodiment of the present invention.

[0073] Referring to FIG. 9, first, the processor (120) can calculate a third calculated value from the absorbance data for the electronic color value and the mixed dye, which is defined as the value obtained by integrating the absolute value of the deviation between the absorbance for the electronic color value and the absorbance for the mixed dye over a preset effective wavelength range (S901). The effective wavelength range can be set in advance through experiments or simulations. For example, the range of 400 to 700 nm may correspond to the effective wavelength range. Assuming that the absorbance for the electronic color value is A, the absorbance for the mixed dye is B, and the effective wavelength range is 400 to 700 nm, the third calculated value (Abs(S)) can be defined by the following Equation 3. It may represent the degree of deviation between the absorbance for the mixed dye and the absorbance for the electronic color value.

[0074]

[0075] Next, the processor (120) can change the concentration of each of the monochromatic dyes so that the third calculated value becomes less than or equal to a preset third reference value (S903). At this time, the processor (120) can change the concentration of each of the monochromatic dyes sequentially, starting from the first-rank monochromatic dye. The processor (120) can repeat the process of FIG. 9 and thus can gradually decrease the third calculated value (Abs(S)) as shown in FIG. 10.

[0076] The processor (120) can make the third reference value for the mixed dye less than or equal to the third reference value by repeating the process of changing the concentration for each of the single-color dyes, the process of calculating a third calculated value for the mixed dye composed of the single-color dyes with changed concentrations, and the process of comparing the newly calculated third calculated value with the third reference value.

[0078] As described above, the dye prescription correction device and method according to an embodiment of the present invention can compare absorbance data for an electronic color value of a target color according to a customer's request with absorbance data for each of the monochromatic dyes constituting a mixed dye generated according to a dye prescription for the target color, and correct the dye prescription based on the comparison result.

[0079] The implementations described herein may be implemented, for example, as methods or processes, devices, software programs, data streams, or signals. Even if discussed only in the context of a single form of implementation (e.g., discussed only as a method), the implementation of the discussed features may also be implemented in other forms (e.g., devices or programs). Devices may be implemented in appropriate hardware, software, and firmware, etc. Methods may be implemented in devices such as processors, which generally refer to processing devices including, for example, computers, microprocessors, integrated circuits, or programmable logic devices. Processors also include communication devices such as computers, cell phones, portable / personal digital assistants ("PDAs"), and other devices that facilitate the communication of information between end-users.

[0080] Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely illustrative and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the claims below. Explanation of the symbols

[0082] 100: Dye prescription correction device 110: Memory 120: Processor

Claims

Claim 1 A dye prescription correction device comprising: a memory for storing at least one instruction; and a processor for executing the at least one instruction stored in the memory, wherein the processor corrects the dye prescription based on absorbance data for an electronic color value of a target color and absorbance data for each of the monochromatic dyes constituting a mixed dye generated according to the dye prescription for the target color, wherein the processor generates absorbance data for the mixed dye based on absorbance data for each of the monochromatic dyes and performs the process of detecting a maximum absorbance wavelength value defined as the wavelength value having the greatest absorbance from the absorbance data for each of the monochromatic dyes, respectively for the electronic color value, the monochromatic dyes, and the mixed dye, and determines a ranking among the monochromatic dyes based on the maximum absorbance wavelength value for each of the monochromatic dyes and the electronic color value, and corrects the dye prescription for a first-rank monochromatic dye based on the maximum absorbance wavelength value for the electronic color value and the mixed dye. Claim 2 delete Claim 3 A dye prescription correction device according to claim 1, wherein the processor determines the monochromatic dye having the maximum absorbance wavelength value with the smallest difference from the maximum absorbance wavelength value for the electronic color value as the first-rank monochromatic dye. Claim 4 A dye prescription correction device according to claim 1, wherein the processor changes the first-ranked monochromatic dye to another monochromatic dye belonging to the same dye group when the difference between the electronic color value and the maximum absorbance wavelength value for the mixed dye is greater than or equal to a preset first reference value. Claim 5 A dye prescription correction device according to claim 4, wherein the processor detects a mixed dye in which the corresponding monochromatic dye is the first-rank monochromatic dye among monochromatic dyes belonging to the same dye series as the first-rank monochromatic dye, and a monochromatic dye having the smallest difference between the maximum absorbance wavelength value for the electronic color value, and sets the detected monochromatic dye as a new first-rank monochromatic dye. Claim 6 A dye prescription correction device according to claim 1, wherein the processor performs a process of detecting a maximum absorbance defined as absorbance at the maximum absorbance wavelength value from the absorbance data for the electronic color value and the mixed dye, respectively, and changes the concentration of the first-rank monochromatic dye so that the maximum absorbance for the electronic color value and the mixed dye matches each other. Claim 7 A dye prescription correction device according to claim 6, wherein the processor increases the concentration of the first-rank monochromatic dye when the maximum absorbance for the electronic color value is greater than the maximum absorbance for the mixed dye, and decreases the concentration of the first-rank monochromatic dye when the maximum absorbance for the electronic color value is less than the maximum absorbance for the mixed dye. Claim 8 In claim 1, the processor is a dye prescription correction device that corrects a dye prescription for a second-rank monochromatic dye based on the electronic color value and the maximum absorbance wavelength value for the mixed dye. Claim 9 A dye prescription correction device according to claim 8, wherein the processor sets a wavelength range centered on the maximum absorbance wavelength value for the second-rank monochromatic dye and having a preset size as a reference wavelength range, calculates a first calculated value defined as the value obtained by integrating the absolute value of the deviation between the electronic color value and the absorbance of the mixed dye over the reference wavelength range, calculates a second calculated value defined as the absolute value of the value obtained by integrating the deviation between the electronic color value and the absorbance of the mixed dye over the reference wavelength range, and corrects the dye prescription for the second-rank monochromatic dye based on the first and second calculated values. Claim 10 In claim 9, the dye prescription correction device, wherein the processor changes the second-ranked monochromatic dye to another monochromatic dye belonging to the same dye series group when the value obtained by subtracting the second-ranked calculated value from the first-ranked calculated value is greater than or equal to a preset second reference value. Claim 11 A dye prescription correction device according to claim 10, wherein the processor detects the dye with the smallest value obtained by subtracting the second calculated value calculated for a mixed dye from the first calculated value calculated for a mixed dye in which the dye is the second-ranked dye among the dyes belonging to the same series of dyes as the second-ranked dye, and sets the detected dye as a new second-ranked dye. Claim 12 A dye prescription correction device according to claim 8, wherein the processor, after correcting the dye prescription for the second-ranked monochromatic dye, calculates a third calculated value defined as the value obtained by integrating the absolute value of the deviation between the electronic color value and the absorbance of the mixed dye over a preset effective wavelength range, and changes the concentration for each of the monochromatic dyes so that the third calculated value is less than or equal to a preset third reference value. Claim 13 A method for correcting a dye prescription performed by a computing device including a processor, comprising: receiving absorbance data for an electronic color value of a target color and absorbance data for each of the monochromatic dyes constituting a mixed dye generated according to the dye prescription for the target color; and correcting the dye prescription based on the absorbance data for the electronic color value and the absorbance data for each of the monochromatic dyes, wherein the step of correcting the dye prescription comprises: generating absorbance data for the mixed dye based on the absorbance data for each of the monochromatic dyes; performing a process of detecting a maximum absorbance wavelength value, defined as the wavelength value having the greatest absorbance from the absorbance data, for each of the electronic color value, the monochromatic dyes, and the mixed dye; and determining a ranking among the monochromatic dyes based on each of the monochromatic dyes and the maximum absorbance wavelength value for the electronic color value. A dye prescription correction method comprising the step of correcting a dye prescription for a first-rank monochromatic dye based on the electronic color value and the maximum absorbance wavelength value for the mixed dye. Claim 14 delete Claim 15 In claim 13, the step of determining the ranking is a dye prescription correction method in which a monochromatic dye having the maximum absorbance wavelength value with the smallest difference from the maximum absorbance wavelength value for the electronic color value is determined as the first-rank monochromatic dye. Claim 16 In claim 13, the step of correcting the dye prescription for the first-rank monochromatic dye is a dye prescription correction method in which, if the difference between the electronic color value and the maximum absorbance wavelength value for the mixed dye is greater than or equal to a preset first reference value, the first-rank monochromatic dye is changed to another monochromatic dye belonging to the same dye series group. Claim 17 A method for correcting a dye prescription according to claim 13, wherein the step of correcting a dye prescription for the first-rank monochromatic dye comprises: a step of performing, respectively for the electronic color value and the mixed dye, a process of detecting a maximum absorbance defined as absorbance at the maximum absorbance wavelength value from the absorbance data; and a step of changing the concentration of the first-rank monochromatic dye so that the maximum absorbance for the electronic color value and the mixed dye matches each other. Claim 18 A dye formulation correction method according to claim 17, wherein the step of changing the concentration of the first-rank monochromatic dye is to increase the concentration of the first-rank monochromatic dye when the maximum absorbance for the electronic color value is greater than the maximum absorbance for the mixed dye, and to decrease the concentration of the first-rank monochromatic dye when the maximum absorbance for the electronic color value is less than the maximum absorbance for the mixed dye. Claim 19 In claim 13, the step of correcting the dye prescription further comprises the step of correcting the dye prescription for a second-rank monochromatic dye based on the maximum absorbance wavelength value for the electronic color value and the mixed dye, and the step of correcting the dye prescription for the second-rank monochromatic dye comprises: the step of setting a wavelength range centered on the maximum absorbance wavelength value for the second-rank monochromatic dye and having a preset size as a range as a reference wavelength range; the step of calculating a first calculated value defined as the value obtained by integrating the absolute value of the deviation between the electronic color value and the absorbance of the mixed dye over the reference wavelength range; the step of calculating a second calculated value defined as the absolute value of the value obtained by integrating the deviation between the electronic color value and the absorbance of the mixed dye over the reference wavelength range; and the step of correcting the dye prescription for the second-rank monochromatic dye based on the first and second calculated values. Claim 20 In claim 19, the step of correcting the dye prescription for the second-ranked monochromatic dye based on the first and second calculated values ​​is a dye prescription correction method in which, if the value obtained by subtracting the second calculated value from the first calculated value is greater than or equal to a preset second reference value, the second-ranked monochromatic dye is changed to another monochromatic dye belonging to the same dye series group.

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