WO2020179629A1

WO2020179629A1 - Calibration system, calibration device, and program

Info

Publication number: WO2020179629A1
Application number: PCT/JP2020/008081
Authority: WO
Inventors: 浩大永井; 聡史出石; 幹夫上松
Original assignee: コニカミノルタ株式会社
Priority date: 2019-03-05
Filing date: 2020-02-27
Publication date: 2020-09-10
Also published as: CN113518903A; JPWO2020179629A1; CN113518903B; JP7459863B2

Abstract

Identification information of a first color measurement device (2) of a stimulus value type, identification information of a measurement object (1), and multiple pieces of combinatorial information obtained by associating and combining spectral emittance characteristics of a measurement object measured by spectroscopic colorimetry using a second color measurement device (5), are stored in advance. When performing calibration on the first color measurement device (2) that has made a measurement of the measurement object (1), an optimal combination is identified from among the multiple pieces of combinatorial information on the basis of the identification information of the first color measurement device (2) and the identification information of the measurement object (1), and then, on the basis of the spectral emittance characteristics included in the identified combination and a spectral responsivity of the first color measurement device (2) that has made the measurement, correction is performed on a measurement value provided by the first color measurement device (2).

Description

Calibration system, calibration device and program

The present invention relates to a calibration system, a calibration device, and a program used for calibrating a stimulus-type colorimeter including at least three color channels.

A stimulus value type measurement, in which a sensor receives light whose wavelength is selected by an optical filter, such as a color luminance meter having a spectral responsivity similar to a color matching function, and the stimulus value according to the light intensity is used as the measurement value. The color apparatus has a measurement error due to a difference between the spectral response of the colorimeter formed by the spectral characteristics of the optical filter or the sensor and the target spectral response such as a color matching function.

Therefore, by using the information on the spectral responsivity of the color measuring device and the spectral radiation characteristic of the measurement target, a coefficient for correcting the measured value as shown in the following formula (1) is calculated, and the measured value is calculated by the correction coefficient. A correction technique is known (for example, Patent Document 1 and Patent Document 2).
P * S * CM1 = P * CMF (1)
In the above formula (1), P is a matrix that is the individual spectral values of the emission spectrum of the target light source, S is a matrix that is the individual spectral values of the spectral sensitivity of the filter of the measuring instrument, and CMF is the standard defined by CIE1931. A matrix that is each spectrum value of the spectrum evaluation function of, CM1 represents a calibration matrix (correction coefficient).

That is, as shown in FIG. 15, in a factory or the like, the spectral radiation characteristic (spectral data) of the measurement target is measured by a color measurement device (also referred to as a spectrophotometer) by a spectrocolorimetry method, and the stimulation value type The spectral responsivity of the color measuring device (also referred to as a filter measuring device) is measured in advance. Then, the correction coefficient CM1 is calculated from the spectral responsivity of the filter measuring instrument and the spectral radiation characteristic of the measurement object, and the actual measurement value of the filter measuring instrument is corrected by the correction coefficient to obtain a correct measurement value.

US Pat. No. 9,163,990 JP 2012-215570 A

However,

Patent Documents

1 and 2 do not consider a combination of a spectroscopic measuring device that measures the spectral radiation characteristic of a measurement target and a filter measuring device that uses an optical filter. Further, the spectral radiation characteristic of the measurement target depends on the measurement position, the measurement angle, and the like. That is, the correction coefficient CM1 exists for each of a plurality of combinations including the spectral radiation characteristics of the reference object to be measured, the filter measuring device, and various parameters that cause errors. Therefore, in order to calculate an appropriate correction coefficient CM1 and perform highly accurate calibration, it is necessary to select an optimum combination from a plurality of combinations. Not shown.

Moreover, if the spectral radiation characteristic of the measurement object or the spectral response of the filter measurement device is measured each time calibration is performed and the correction coefficient is calculated from the measurement result, the measurement object or the spectroscopy measurement device will be changed. Spectral radiation characteristics and the like must be measured every time, which is inefficient and requires time for calibration work.

The present invention has been made in view of such a technical background, and when measuring an object to be measured with a stimulus value type colorimeter including at least three color channels, different measurement conditions are used. Another object of the present invention is to provide a calibration system, a calibration device, and a program that can perform highly accurate calibration easily and efficiently.

The above object is achieved by the following means.
(1) One or more first identification information for specifying each of the first or more stimulus value type first color measuring devices including at least three color channels, and one or more One or a plurality of second identification information for specifying one measurement object, and the spectrum of the measurement object measured by the second color measurement device by one or a plurality of spectrocolorimetry methods. The first color measuring device is used when calibrating a storage means that stores a plurality of combination information in which radiation characteristics are associated and combined in advance and the first color measuring device that has measured a measurement object. Based on the first identification information of the above and the second identification information of the object to be measured, the optimum combination of the first color measuring device, the object to be measured, and the spectral radiation characteristics of the object to be measured is obtained. Discrimination means for discriminating from among the plurality of combination information stored in the storage means, spectral radiation characteristics of the measurement object included in the combination discriminated by the discrimination means, and the measurement result A calibration system including: a calibration unit that corrects a measurement value obtained by the first color measurement device based on a spectral responsivity of the first color measurement device.
(2) The calibration system according to item 1, wherein the combination information is stored in advance in the storage unit as a table.
(3) Each combination in the combination information includes information for specifying the measurement position, and the discrimination means determines the optimum combination based on the measurement position of the first color measuring device used for the measurement. The calibration system according to 1 or 2.
(4) Each combination in the combination information includes information for specifying the measurement angle, and the discrimination means determines the optimum combination based on the measurement angle of the first color measuring device used for the measurement. The calibration system according to any one of 1 to 3.
(5) Each combination in the combination information includes information on the measurement environment, and the discrimination means determines the optimum combination based on the measurement environment of the first color measuring device used for the measurement. The calibration system according to any one of 4.
(6) When the second information indicating the measurement object measured by the first color measuring device does not exist in the combination information stored in the storage unit, the determination unit determines the spectral emission characteristic. 6. The calibration system according to any one of items 1 to 5 above, which determines a combination of measurement objects that are similar to each other from the combination information.
(7) The calibration system according to item 6, wherein the storage unit stores an initial value table of weights for determining a combination of measurement objects having similar spectral radiation characteristics.
(8) The calibration system according to the above item 6 or 7, wherein the user can input the evaluation of the combination determined by the determination means.
(9) A correction coefficient based on the spectral radiation characteristic of the measurement object and the spectral responsivity of the first color measurement device used for measurement is set as a first correction coefficient, and a measurement value by the first measurement device is set as a first correction coefficient. When the correction coefficient for calibrating to the value obtained by the measuring device 2 is the second correction coefficient and the correction coefficient for associating the first correction coefficient with the second correction coefficient is the third correction coefficient. The combination stored in the storage means includes the third correction coefficient, and the calibration means calculates the first correction coefficient, and the calculated first correction coefficient, and The second correction coefficient is calculated from the third correction coefficient included in the combination determined by the determination means, and the measured value is corrected using the calculated second correction coefficient. The calibration system according to any one of 8.
(10) The calibration system according to any one of items 1 to 9 above, wherein the spectral responsivity of the first color measuring device is stored in the first color measuring device.
(11) The calibration system according to any one of items 1 to 9 above, wherein the spectral responsivity of the first color measuring device is stored in the storage means.
(12) In the combination information, a third identification information for identifying the second color measuring device is combined in association with the first identification information, the second identification information, and the spectral radiation characteristic. The calibration system according to any one of the preceding paragraphs 1 to 11.
(13) One or a plurality of first identification information for specifying one or a plurality of stimulus value type first color measuring devices each including at least three color channels, and one or a plurality of them. One or a plurality of second identification information for specifying one measurement object, and the spectrum of the measurement object measured by the second color measurement device by one or a plurality of spectrocolorimetry methods. The first color measuring device is used when calibrating a storage means that stores a plurality of combination information in which radiation characteristics are associated and combined in advance and the first color measuring device that has measured a measurement object. Based on the first identification information and the second identification information of the measurement target, an optimal combination of the first colorimetric device that has performed the measurement, the measurement target, and the spectral emission characteristics of the measurement target, Discrimination means for discriminating from among the plurality of combination information stored in the storage means, spectral radiation characteristics of the measurement object included in the combination discriminated by the discrimination means, and the measurement result A calibration device comprising: a calibration unit that corrects a measurement value obtained by the first color measurement device based on a spectral responsivity of the first color measurement device.
(14) One or a plurality of first identification information for specifying one or a plurality of stimulus value type first color measuring devices each including at least three color channels, and one or a plurality of them. One or a plurality of second identification information for specifying one measurement object, and the spectrum of the measurement object measured by the second color measurement device by one or a plurality of spectrocolorimetry methods. The radiation characteristics can communicate with an external database device having a storage means for pre-storing a plurality of combined information in association with each other, and the calibration of the first color measuring device that has measured the measurement object can be performed. When the measurement is performed, the first color measuring device, the measuring object, and the measuring object that have been measured based on the first identification information of the first color measuring device and the second identification information of the measurement object are measured. Discriminating means for discriminating the optimum combination of spectral radiation characteristics of the objects from among the plurality of combination information stored in the storage means, and the measuring object contained in the combination discriminated by the discriminating means. A calibration device including a calibration means for correcting a measured value by the first color measuring device based on the spectral radiation characteristics of the above and the spectral response of the first color measuring device in which the measurement is performed.
(15) The calibration device according to item 13 or 14, wherein the combination information is stored in the storage unit as a table in advance.
(16) Each combination in the combination information includes information for specifying the measurement position, and the discrimination means determines the optimum combination based on the measurement position of the first color measuring device used for the measurement. The calibrator according to any one of 13 to 15.
(17) Each combination in the combination information includes information for specifying the measurement angle, and the discriminating means determines the optimum combination based on the measurement angle of the first color measuring device used for the measurement. The calibration device according to any one of 13 to 16.
(18) Each combination in the combination information includes information on the measurement environment, and the determination means determines the optimum combination based on the measurement environment of the first color measuring device used for the measurement. The calibrator according to any one of 17.
(19) When the second information indicating the measurement object measured by the first color measuring device does not exist in the combination information stored in the storage means, the determination means determines the spectral emission characteristic. 19. The calibration device according to any one of items 13 to 18 above, which determines a combination of measurement objects that are similar to each other from the combination information.
(20) The calibration device according to item 19, wherein the storage means stores an initial value table of weights for discriminating a combination of measurement objects having similar spectral radiation characteristics.
(21) The calibration device according to the above item 19 or 20, wherein a user can input an evaluation of the combination determined by the determination means.
(22) A correction coefficient based on the spectral radiation characteristic of the measurement object and the spectral responsivity of the first color measurement device used for measurement is set as a first correction coefficient, and a measurement value by the first measurement device is set as a first correction coefficient. When the correction coefficient for calibrating to the value obtained by the measuring device 2 is the second correction coefficient and the correction coefficient for associating the first correction coefficient with the second correction coefficient is the third correction coefficient. The combination stored in the storage means includes the third correction coefficient, and the calibration means calculates the first correction coefficient, and the calculated first correction coefficient, and The second correction coefficient is calculated from the third correction coefficient included in the combination determined by the determination means, and the measured value is corrected using the calculated second correction coefficient. 21. The calibrator according to any one of 21.
(23) The calibration device according to any one of items 13 to 22, wherein the spectral responsivity of the first color measurement device is stored in the first color measurement device.
(24) The calibration device according to any one of items 13 to 22 above, wherein the spectral responsivity of the first color measurement device is stored in the storage means.
(25) In the combination information, the third identification information for identifying the second colorimetric device is combined with the first identification information, the second identification information, and the spectral radiation characteristic in association with each other. The calibrator according to any one of the preceding paragraphs 13 to 24.
(26) One or a plurality of first identification information for specifying one or a plurality of stimulus value type first color measuring devices each including at least three color channels, and one or a plurality of them. One or a plurality of second identification information for specifying one measurement object, and the spectrum of the measurement object measured by the second color measurement device by one or a plurality of spectrocolorimetry methods. When calibrating the first color measuring device in which the measurement object is measured, the computer of the calibrating device provided with the storage means for storing a plurality of combination information in which the radiation characteristics are associated and combined in advance is used. Based on the first identification information of the first color measurement device and the second identification information of the measurement target, the first color measurement device that performed the measurement, the measurement target, and the spectral emission of the measurement target A determination step of determining an optimum combination of characteristics from among the plurality of combination information stored in the storage means, and a spectral radiation characteristic of the measurement target included in the combination determined by the determination step. And a calibration step of correcting a measurement value by the first color measurement device based on the spectral responsivity of the first color measurement device that has performed the measurement.
(27) One or a plurality of first identification information for specifying one or a plurality of stimulus value type first color measuring devices each including at least three color channels, and one or a plurality of them. One or a plurality of second identification information for specifying one measurement object, and the spectrum of the measurement object measured by the second color measurement device by one or a plurality of spectrocolorimetry methods. The first colorimetric measurement is performed on a computer of a calibration device that is capable of communicating with an external database device that includes a storage unit that stores in advance a plurality of pieces of combination information whose emission characteristics are associated with each other. When calibrating the device, the first color measuring device and the measuring object are measured based on the first identification information of the first color measuring device and the second identification information of the measurement object. And a determination step of determining the optimum combination of the spectral radiation characteristics of the measurement target from the plurality of combination information stored in the storage means, and a combination determined by the determination step. To execute a calibration step of correcting the measured value by the first color measurement device based on the spectral emission characteristic of the measurement target and the spectral responsivity of the first color measurement device that has performed the measurement. Program.

According to the inventions described in the above paragraphs (1) and (13), one or more for specifying one or more stimulus value type first colorimetric devices including at least three color channels, respectively. Individual first identification information, one or more second identification information for identifying one or more measurement objects, each spectral responsivity of the first color measuring device, and A plurality of pieces of combination information in which the spectral radiation characteristics of the measurement target measured by the second colorimetric apparatus using one or a plurality of spectrocolorimetric methods are associated and combined are stored in advance in the storage unit. Then, when calibrating the first color measurement device that has measured the measurement target, the measurement is performed based on the first identification information of the first color measurement device and the second identification information of the measurement target. The optimum combination of the first colorimetric device, the measurement object, and the spectral emission characteristic of the measurement object that has been determined is determined from among the plurality of combination information stored in the storage unit, and the determined combination is determined. The value measured by the first color measuring device is corrected based on the spectral radiation characteristics of the included object to be measured and the spectral response of the first color measuring device in which the measurement is performed.

In this way, the optimum combination corresponding to the first color measuring device actually used and the measurement object is selected from the plurality of combinations stored in advance in the storage means, and is included in the selected combination. Since the spectrophotometric characteristics are used for calibration of the first colorimeter, even if the first colorimeter used for measurement or the object to be measured changes, highly accurate calibration adapted to the conditions can be easily performed. be able to. In addition, it is not necessary to measure the spectral radiation characteristics of the measurement object and the spectral response of the filter measuring instrument each time calibration is performed, and it is not necessary to calculate the correction coefficient from the measurement results. it can.

According to the inventions described in the preceding paragraphs (2) and (15), the discriminating means can discriminate the optimum combination from the table of combination information stored in the storage means.

According to the inventions described in the preceding paragraphs (3) and (16), the optimum combination can be determined in consideration of the measurement position of the first measuring device, so that more accurate calibration can be performed. it can.

According to the inventions described in the preceding paragraphs (4) and (17), the optimum combination can be determined in consideration of the measurement angle of the first measuring device, so that more accurate calibration can be performed. it can.

According to the inventions described in the preceding paragraphs (5) and (18), the optimum combination can be determined in consideration of the information on the measurement environment of the first measuring device, so that more accurate calibration is performed. be able to.

According to the inventions described in the above paragraphs (6) and (19), when the second information indicating the measurement target measured by the first color measuring device is not present in the combination information, the spectral radiation characteristic A combination of similar measurement objects is determined from the combination information.

According to the inventions described in the above paragraphs (7) and (20), it is possible to determine the combination of the measurement objects having similar spectral emission characteristics based on the initial value table of weights.

According to the inventions described in the above paragraphs (8) and (21), the user can input the evaluation of the determined combination, so that the input evaluation can be referred to when determining the optimum combination.

According to the inventions described in the above paragraphs (9) and (22), the first correction coefficient is a correction coefficient based on the spectral emission characteristic of the measurement target and the spectral responsivity of the first color measurement device used for the measurement. And a correction coefficient for calibrating the measurement value of the first measurement device to a value obtained by the second measurement device is used as a second correction coefficient, and the first correction coefficient and the second correction coefficient are associated with each other. When the correction coefficient is the third correction coefficient, the combination stored in the storage unit includes the third correction coefficient. Therefore, the first correction coefficient is calculated and the calculated first correction coefficient is calculated. The second correction coefficient can be calculated from the correction coefficient and the third correction coefficient included in the determined combination, and the measured value can be corrected using the calculated second correction coefficient.

According to the inventions described in (10) and (23) above, the spectral responsivity of the first color measurement device can be called from the first color measurement device.

According to the inventions described in (11) and (24) above, the spectral responsivity of the first color measurement device can be called from the storage means.

According to the inventions described in (12) and (25) above, the combination information includes the third identification information for identifying the second color measurement device, the first identification information, and the second identification information. And because it is combined in association with the spectrophotometric characteristics, if the user holds a second colorimeter identified by this third identification, then this second colorimeter is used again. It is possible to perform processing such as measuring the spectral radiation characteristic of the measurement object and performing correction based on the result.

According to the invention described in the previous section (14), the optimum combination corresponding to the first color measuring device actually used and the measurement object is selected from a plurality of combinations stored in advance in the storage means. Since the spectral radiation characteristics included in the selected combination are used for the calibration of the first color measurement device, even if the first color measurement device or the measurement target used for the measurement is changed, the condition is adapted. Highly accurate calibration can be performed easily and efficiently. Moreover, since the storage means is provided in an external database device different from the calibration device, the combination information can be centrally managed by the database device, and the calibration device can connect to the database device to store necessary information when necessary. Can be obtained.

According to the invention described in the above paragraph (26), one or a plurality of first colorimetric devices for specifying one or a plurality of stimulus value type first colorimetric devices each including at least three color channels. Identification information, one or more second identification information for specifying one or more measurement objects, each spectral response of the first color measurement device, and one or more The spectral emission characteristics of the measurement object measured by the second colorimetric device according to the spectrocolorimetric method are measured by the computer of the calibration device including a storage unit that stores in advance a plurality of pieces of combination information associated with each other. When calibrating the first color measurement device that measured the object, the measurement was performed based on the first identification information of the first color measurement device and the second identification information of the measurement object. The optimum combination of the first color measuring device, the measurement object, and the spectral radiation characteristic of the measurement object is discriminated from a plurality of combination information stored in the storage unit, and is included in the discriminated combination. It is possible to execute a process of correcting the measured value by the first color measuring device based on the spectral radiation characteristics of the object to be measured and the spectral response of the first color measuring device in which the measurement is performed.

According to the invention described in the above paragraph (27), one or a plurality of first colorimetric devices for specifying one or a plurality of stimulus value type first colorimetric devices each including at least three color channels. Identification information, and one or more second identification information for specifying one or more measurement objects, and one or more second color measurement device using a spectral colorimetric method. The measurement of the measured object is performed on a computer of a calibrator that can communicate with an external database device equipped with a storage means that stores a plurality of combination information in which the spectral radiation characteristics of the measured object are associated and combined in advance. When performing the calibration of the performed first color measurement device, the first color measurement measurement is performed based on the first identification information of the first color measurement device and the second identification information of the measurement target. The optimum combination of the device, the measurement object, and the spectral radiation characteristic of the measurement object is determined from a plurality of pieces of combination information stored in the storage unit, and the measurement object included in the determined combination is determined. The process of correcting the measured value by the first color measuring device can be executed based on the spectral radiation characteristics and the spectral response of the first color measuring device in which the measurement is performed.

It is a figure which shows schematic structure of the calibration system which concerns on one Embodiment of this invention. It is a figure which shows an example of the combination table which is stored and stored in the database server. 3 is a flowchart for explaining the operation of the calibration device in the calibration system shown in FIG. 1 under the combination table of FIG. 2. It is a figure which shows the other example of a combination table. 5 is a flowchart for explaining the operation of the calibration device in the calibration system shown in FIG. 1 under the combination table of FIG. 4. It is a figure which shows still another example of a combination table. 7 is a flowchart for explaining the operation of the calibration device in the calibration system shown in FIG. 1 under the combination table of FIG. 6. It is a figure for demonstrating an arbitrary calibration method. (A) is a diagram showing a relationship of correction coefficients at the time of factory shipment, and (B) is a diagram showing a relationship of correction coefficients at the time of user use. 7 is a flowchart for explaining still another operation of the calibration device in the calibration system shown in FIG. 1. It is a figure which shows an example of a neural network. (A)-(C) is a figure for demonstrating the difference of a spectrum shape when comparing two measurement objects (display panels). It is a figure which shows an example of the initial value table of a weight. It is a figure which shows the structure of the calibration apparatus which concerns on other embodiment of this invention. It is a figure for demonstrating the basic calibration method.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a diagram showing a schematic configuration of a calibration system according to an embodiment of the present invention. This calibration system includes a first color measurement device 2 that measures an object to be measured 1, and a calibration device 3 that receives measurement data from the first color measurement device 2 and calibrates the first color measurement device 2. And a database server 4.

In this embodiment, a display panel such as a liquid crystal is exemplified as the measurement object 1, but the measurement object 1 is not limited to the display panel.

The first color measurement device 2 is a stimulus value type color measurement device that receives light whose wavelength is selected by an optical filter or the like with a sensor and uses a stimulus value according to the light intensity as a measurement value. Contains color channels. That is, it has three or more filters having different spectral transmissibility and three or more sensors for converting the light received through the filters into the corresponding measurement signals. Hereinafter, the first color measuring device is also referred to as a filter measuring device.

The calibration device 3 is composed of a personal computer, and includes a CPU 31, a RAM 32, a non-volatile memory 33 such as a hard disk, and a functional unit including a measurement unit 34, a determination unit 35, a calibration unit 36, and a communication unit 37.

The CPU 31 centrally controls the entire calibration device 3, and the RAM 32 provides a work area when the CPU 31 operates according to an operation program stored in the nonvolatile memory 33 or the like.

The non-volatile memory 33 stores the operation program of the CPU 31 and various data. As an example of various data, measurement data that is raw data (raw data) of the object to be measured acquired from the filter measuring device 2, filter measuring device ID that is identification information for specifying the filter measuring device 2, There is a spectral responsivity of the filter measuring device 2.

The measuring unit 34 acquires the measurement data from the filter measuring device 2, and also acquires the filter measuring device ID and the spectral responsivity. The acquired measurement data, filter measuring device ID, and spectral responsivity are stored in the nonvolatile memory 33 as described above. In addition, a measurement object ID (also referred to as a display type) for identifying the measurement object 1 to be measured is also acquired. The measurement object ID is acquired based on, for example, user input. The filter measuring instrument ID and the like may also be acquired based on the user input.

In order to perform highly accurate calibration, the discriminating unit 35 selects the optimum combination of the filter measuring device 2 used for the actual measurement and the measurement object 1 from the combination information stored in the database server 4. Although it is determined, this point will be described later.

The calibration unit 36 calibrates the filter measuring device 2 by using the spectral radiation characteristics of the measurement object 1 included in the optimum combination determined by the discrimination unit 35.

The communication unit 37 is a communication interface for connecting the calibration device 3 to the database server 4 and the filter measuring device 2 via the network 5.

The database server 4 is composed of a personal computer or the like, has a storage unit 41, and holds a plurality of combination information for performing calibration of the filter measuring instrument 2 as a combination table in the storage unit 41.

The combination table will be described in detail. As described above, the filter measuring instrument 2 has a measurement error due to the difference between the spectral responsivity and the target spectral responsivity such as the color matching function. It is desirable to calibrate the filter measuring instrument 2 by calculating the correction count and correcting the measured value by using the information on the spectral response rate and the spectral radiation characteristic of the object 1 to be measured.

However, there are correction coefficients for each of a plurality of combinations consisting of the spectral radiation characteristics of the object 1 to be measured, the filter measuring instrument 2, and various parameters that cause errors. Therefore, in order to calculate an appropriate correction coefficient and perform highly accurate calibration, it is necessary to select an optimum combination from a plurality of combinations. Moreover, if the spectral radiation characteristic of the measuring object 1 is measured each time and the correction coefficient is calculated from the measurement result, the spectral radiation characteristic etc. must be measured every time the measuring object 1 is changed. However, it is inefficient and takes time for calibration work.

Therefore, in this embodiment, a plurality of filter measuring devices 2 of different types, a plurality of measurement objects 1 of different types, and a second color measuring device (hereinafter, also referred to as a spectroscopic measuring device) 5 by a spectrocolorimetric method are provided. In combination, the spectral radiation characteristic of the measuring object 1 is measured in advance by the spectroscopic measurement device 5. In addition, the spectral response of the filter measuring device 2 is also measured.

As described above, the measurement object 1 and the filter measuring instrument 2 are given a measurement object ID (display type) and a filter measuring instrument ID for identifying them, but in this embodiment, as a desirable embodiment. , The spectroscopic measuring instrument 5 is also given a spectroscopic measuring instrument ID. Then, the obtained spectral radiation characteristic, the ID of the spectroscopic measuring instrument 5 that measured the spectral radiation characteristic, the ID of the filter measuring instrument 2, and the ID of the measuring object 1 are associated with each other and stored in the database server 4 as a combination table. It is stored in the section 41 and saved.

FIG. 2 shows an example of a combination table stored and saved in the database server 4. In this combination table, the filter measuring device ID, the measurement target ID (Display Type), the spectroscopic measuring device ID, and the spectral radiation characteristic are stored in association with each other. Although not shown, the spectral responsivity of each filter measuring instrument 2 may be defined in this table in association with the filter measuring instrument ID, the measurement object ID, the spectroscopic measuring instrument ID, etc. It may be stored in the container 2 itself.

Using this combination table, the calibration device 3 inputs the ID of the filter measuring device 2 used for actual measurement and the ID of the measurement object 1 from the combination information of the combination table. It is possible to determine a combination including the filter measuring device ID and the measurement target object ID as the optimum combination, and to specify (Output) the spectral emission characteristics of the corresponding spectroscopic measuring device 5 and the measurement target object 1 measured by the spectrometric measuring device 5. You can do it.

Next, the operation of the calibration device 3 in the calibration system shown in FIG. 1 will be described using the flowchart in FIG.

First, when the filter measuring instrument 2 is shipped from the factory, the filter measuring instrument 2, various measuring objects 1 and various spectroscopic measuring instruments 5 are combined to measure the spectral radiation characteristics of the measuring object 1, and the results are shown. , The filter measuring device ID, the measurement object ID, and the spectroscopic measuring device ID are stored as combination information in the storage unit 41 of the database server 4 as a combination table. In addition, the spectral response of the filter measuring device 2 is also measured and stored in the filter measuring device 2 itself, or stored in the combination table of the database server 4 in association with the filter measuring device ID. By repeating this, a large amount of combination information is stored in the database server.

The user measures the measurement object 1 using the shipped filter measuring device 2, but the measuring unit 34 of the calibration device 3 acquires the measurement data, the filter measuring device ID, and the spectral responsivity from the filter measuring device 2. At the same time, the display type of the measuring object 1 is acquired by user input or the like (step S01).

Next, the determination unit 35 of the calibration device 3 accesses the database server 4 via the network and acquires the combination information from the combination table of the database server 4 (step S01).

The determination unit 35 further compares the acquired combination information with the filter measurement device ID and display type acquired by the measurement unit 34, and determines a combination in which the filter measurement device ID and the display type match from the combination information. (Step S01). Then, the spectroscopic measurement device 5 and the spectroscopic radiation characteristic indicated by the spectroscopic measurement device ID included in the determined combination are the optimum spectroscopic measurement device corresponding to the filter measurement device 2 and the measurement target 1 that are actually used. 5 and the spectroscopic radiation characteristics are determined (step S01).

For example, in the combination table of FIG. 2, if the filter measuring instrument ID is a and the display type is a circle number 1, the spectroscopic measuring instrument ID is determined to be A and the spectral radiation characteristic is determined to be α.

Next, the calibration unit 36 calculates a correction coefficient (corresponding to the first correction coefficient) CM1 using the determined spectral radiation characteristic and the spectral responsivity of the filter measuring device 2 (step S02), and the calculated correction is performed. The measurement data (Raw data) is corrected using the coefficient CM1 (step S03).

As described above, in this embodiment, a plurality of combinations of the spectral radiation characteristics of the filter measuring device 2, the measuring object 1, the spectroscopic measuring device 5, and the measuring object 1 are stored in association with the database server 4 in advance. From the combination information, the optimum combination corresponding to the actually used filter measuring device 2 and the measurement object 1 is selected, and the spectral radiation characteristics included in the selected combination are corrected when the filter measuring device 2 is calibrated. Since it is used for calculating the coefficient, even if the filter measuring device 2 or the measuring object 1 used for the measurement is changed, or the user does not hold the optimum spectroscopic measuring device 5, the accuracy suitable for the conditions can be obtained. High calibration can be done easily and efficiently.

Further, in this embodiment, since the combination information includes the spectroscopic measurement device ID for specifying the spectroscopic measurement device 5, the user holds the spectroscopic measurement device 5 specified by this spectroscopic measurement device ID. In this case, the spectral radiation characteristic of the measurement object 1 may be measured again using the spectroscopic measurement device 5, and the correction coefficient CM1 may be calculated based on the result. In this case, since the spectral emission characteristic has already been obtained, it is possible to perform calibration with high traceability.
[Second Embodiment]
In the above-described first embodiment, a large number of pieces of combination information defined in the combination table shown in FIG. 2 are associated with the filter measuring instrument ID, the display type of the measurement object 1, the spectroscopic measuring instrument ID, and the spectral radiation characteristic, respectively. It was the one that was done.

However, since the correction coefficient CM1 also differs depending on the measurement position on the measurement object, highly accurate calibration cannot be performed if the measurement position is different.

Therefore, in this embodiment, the spectral radiation characteristics are measured in advance by changing the measurement position on the measurement object 1 under various combinations, and information for specifying the measurement position is displayed as shown in the combination table of FIG. Is also held in the combination table in association with the filter measuring device ID, display type, spectroscopic measuring device ID, and spectral radiation characteristic.

The operation of the calibration device 3 when the combination table of FIG. 4 is used in the calibration system of FIG. 1 will be described with reference to the flowchart of FIG.

When calibrating the measurement of the measurement object 1 using the filter measuring device 2, the measuring unit 34 of the calibration device 3 acquires the measurement data, the filter measuring device ID, and the spectral responsivity from the filter measuring device 2, and Information on the measurement position and the display type are acquired by user input or the like (step S11).

Next, the determination unit 35 of the calibration device 3 accesses the database server 4 via the network and acquires the combination information from the combination table of the database server 4 (step S11).

The determination unit 35 further compares the acquired combination information with the filter measurement device ID, the display type, and the measurement position acquired by the measurement unit 34, and the filter measurement device ID, the display type, and the measurement position are selected from the combination information. A matching combination is determined (step S11). Then, the spectroscopic measuring instrument 5 and the spectral radiation characteristics indicated by the spectroscopic measuring instrument ID included in the determined combination are optimally spectroscopically measured corresponding to the filter measuring instrument 2 and the measurement object 1 used for the measurement. It is determined as the device 5 and the spectroscopic radiation characteristics (step S11).

For example, if the filter measuring instrument ID is a, the display type is a circle number 1, and the measuring position is the measuring position 1, the spectroscopic measuring instrument ID is determined to be A and the spectral radiation characteristic is determined to be α.

Next, the calibration unit 36 calculates the correction coefficient CM1 using the determined spectral radiation characteristic and the spectral responsivity of the filter measuring device 2 (step S12), and corrects the measurement data using the calculated correction coefficient CM1. Yes (step S13).

As described above, in this embodiment, the combination information stored in advance in the database server 4 also includes information for specifying the measurement position, so that the optimum combination is determined in consideration of the measurement position. And more accurate calibration can be done.
[Third Embodiment]
Since the correction coefficient CM1 differs not only with the measurement position on the measurement object but also with the measurement angle, it is not possible to perform highly accurate calibration if the measurement angles are different.

Therefore, in this embodiment, not only the measurement position in the measurement object 1 but also the measurement angle is changed under various combinations to perform the measurement in advance, and the measurement position and the measurement angle are specified as shown in the combination table of FIG. The information for doing so is also stored in the combination table in association with the filter measuring device ID, the display type, the spectroscopic measuring device ID, and the spectral radiation characteristic.

The operation of the calibration device 3 when the combination table of FIG. 6 is used in the calibration system of FIG. 1 will be described using the flowchart of FIG.

When calibrating the measurement of the measurement object 1 using the filter measuring device 2, the measuring unit 34 of the calibration device 3 acquires the measurement data, the filter measuring device ID, and the spectral responsivity from the filter measuring device 2, and Information on the measurement position and the measurement angle and the display type are acquired by user input or the like (step S21).

Next, the determination unit 35 of the calibration device 3 accesses the database server 4 via the network and acquires the combination information from the combination table of the database server 4 (step S21).

The determination unit 35 further compares the acquired combination information with the filter measurement device ID, the display type, the measurement position, and the measurement angle acquired by the measurement unit 34, and from the combination information, the filter measurement device ID, the display type, A combination in which the measurement position and the measurement angle match is determined (step S21). Then, the spectroscopic measuring instrument 5 and the spectral radiation characteristics indicated by the spectroscopic measuring instrument ID included in the determined combination are optimally spectroscopically measured corresponding to the filter measuring instrument 2 and the measurement object 1 used for the measurement. It is determined as the device 5 and the spectroscopic radiation characteristics (step S21). For example, if the filter measuring device ID is a, the display type is circled number 1, the measuring position is measuring position 1, and the measuring angle is θ, the spectroscopic measuring device ID is determined to be A and the spectral radiation characteristic is determined to be α.

Next, the calibration unit 36 calculates the correction coefficient CM1 using the determined spectral radiation characteristic and the spectral response of the filter measuring device 2 (step S22), and corrects the measurement data using the calculated correction coefficient CM1. Yes (step S23).

As described above, in this embodiment, since the combination information stored in advance in the database server 4 includes information for specifying the measurement angle as well as the measurement position, the measurement angle is also taken into consideration. The optimal combination can be determined, and more accurate calibration can be performed.

The combination table may include only information about the measurement angle, not both the measurement position and the measurement angle.
[Fourth Embodiment]
When the measured values of the spectroscopic measuring instrument 5 and the filter measuring instrument 2 are compared, a difference occurs. Therefore, there is a technique (arbitrary calibration) in which a correction coefficient is calculated from the difference in the measured values and the correction is added to the measurement data of the filter measuring device 2.

Where Value[Spectrometer] is a matrix that is the individual stimulus values obtained from the spectroscopic data, and Value[Filter type measuring instrument]] is a matrix that is the individual stimulus values of the measurement data (Raw data) obtained by the filter measuring instrument. , Let CM2 be the calibration matrix (second correction factor)
Value [Spectrometer] = CM2 * Value [Filter type measuring instrument]] ・・・ (2)
It is represented by.

Since the light source (spectroscopic measuring instrument) used to acquire the spectral responsivity of the filter measuring instrument 2 and the display panel which is the measurement object 1 have different optical characteristics such as polarization characteristics and directivity, the first correction described above is performed. The coefficient (CM1) and the above second correction coefficient (CM2) do not completely match.

Therefore, as shown in the explanatory diagram of the arbitrary calibration in FIG. 8, before the factory shipment, the display panel which is the same measurement object 1 is measured in advance at the same timing by using the spectroscopic measurement device 5 and the filter measurement device 1. , The first correction coefficient (CM1) and the second correction coefficient (CM2). Assuming that the calculated difference between CM1 and CM2 is the third correction coefficient (CM3) as shown in FIG. 9A showing the relationship between the correction coefficients at the time of factory shipment, FIG. As in (B)
CM2' = CM1' + CM3 = CM1' + (CM2 · CM1)・・・(3)
Becomes Here, CM1' and CM2' represent the first and second correction coefficients when the user is actually using the filter measuring instrument. The third correction coefficient (CM3) may be obtained by the ratio of the first correction coefficient (CM1) and the second correction coefficient (CM2) as in the following formula (4).
CM2' = CM1' * (CM2 / CM1))・・・(4)
Then, identification information (ID) is given to the filter measuring device 2 and the measuring object 1, and the spectral responsivity of each filter measuring device 2 and the filter measuring device 2 used to measure each measuring object 1 Information on the spectral radiation characteristic and further the third correction coefficient (CM3) are associated with each other and held as a combination table.

In the actual measurement of the measurement object 1 by the filter measurement device 2, the ID of the filter measurement device 2 and the ID of the measurement object 1 which are being used are measured by the measurement unit 34 of the calibration device 3 by the acquired measurement data (Raw Data) and set and hold. Then, a combination that matches the filter measuring device ID and the measurement object ID is determined from the combination information, and the spectroscopic measuring device ID, the spectral radiation characteristic, and the third correction coefficient (CM3) included in the combination are determined. To do.

Then, the first correction coefficient (CM1′) is calculated from the spectral responsivity of the filter measuring device 2 and the spectral radiation characteristic, and from the first correction coefficient (CM1′) and the third correction coefficient (CM3). , The second correction coefficient (CM2′) is derived from the expression (3) or the expression (4), and the measurement value is corrected using the second correction coefficient (CM2′).

In this way, by storing the third correction coefficient (CM3) in the combination table, it is not necessary to perform arbitrary calibration before each measurement, and the burden on the operator can be reduced.
[Other Embodiments]
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

For example, an ID that is identification information is attached to the filter measuring device 2 and the measuring object 1, and the spectral responsivity of each filter measuring device 2 and the measuring device information and the spectrum used for measuring each measuring object 1 Information on the radiation characteristics is set (associated) with each of these IDs and held as a combination table. Then, as shown in the flowchart of FIG. 10, at the time of actual measurement, the temperature, the humidity, the place, and the external light (measurement) obtained by the external environment measuring device 6 provided integrally with or separately from the calibration device 3 are measured. Measurement environment information (measurement environment parameters) such as (illuminance of place), external electric field magnetic field, vibration of measuring instrument, cleanliness of measurement place, stability of power supply, and ID of worker involved in measurement. By holding as a set, the tendency of the measurement environment can be analyzed. Further, the user may add the measurement environment information (measurement environment parameters) to the combination table read by the determination unit 35. 10 is the same as the flowchart of FIG. 5 except that the measurement environment information (measurement environment parameters) is stored as a set with the measurement data. Detailed description is omitted.

Moreover, when managing the same measuring object 1 using a plurality of filter measuring devices 2, the measured value is uniquely changed from the measured value of each lot or each measuring device accumulated in the database server 4, or Failure prediction may be performed in advance by finding a lot or a measuring instrument that changes linearly.

Further, in the above embodiment, a combination in which the IDs of the filter measuring instrument 2 used for the actual measurement and the measurement object 1 match is selected from the combination information stored in the combination table. However, by accumulating a large number of these pieces of combination information, by using so-called AI (artificial intelligence) or the like, even if the same ID as that of the measurement object 1 does not exist in the combination information, the spectral emission It is possible to acquire a combination for the measurement object 1 having similar characteristics.

In this case, preferably, the database server 4 may store an initial value table of weights for discriminating a combination of the measurement objects 1 having similar spectral radiation characteristics together with the combination table.

Here, an example of the weight initial value table will be described. The weight initial value table indicates the ID (display type) of a measurement object having a similar spectrum shape even when measuring a measurement object (display panel) that differs from the spectrum shape of the spectral emission characteristics of the measurement object. It means a table for specifying, for example, the weighting coefficient W in the neural network.

As an example of the neural network, the neural network is represented by a schematic diagram as shown in FIG. In FIG. 11, o1 ¹ , o2 ¹ , and o3 ¹ output 1 if the difference is large at each wavelength, and 0 if the difference is small (step function below: 1 if u is larger than the threshold value b, 0 if smaller) Output).

In addition, o1 ² and o2 ² are calculated by the following equations, respectively.
o1 ² = o1 ¹ * W11 + o2 ¹ * W21 + o3 ¹ * W31
o2 ² = o1 ¹ * W12 + o2 ¹ * W22 + o3 ¹ * W32
Then, it is a mechanism to judge match or mismatch from the values of o1 ² and o2 ² .

When comparing two measurement objects (display panels) (one is an LED and the other is an OLED), the spectral shapes of the LED and the OLED are as shown in FIGS. There is no difference, and there is a small difference in relative intensity at 550 nm, and a large difference in relative intensity at 650 nm.

Based on this premise, the weighting coefficient W (initial value table of weights) shown in FIG. 13 is determined. As an example, if there are two measurement objects 1 and there is no difference at 450 nm, but there is a difference at 550 nm and 650 nm (o1 ¹ = 0, o2 ¹ = 1, o3 ¹ = 1), then , O1 ² and o2 ² are combined with the initial weight table (Fig. 13).
o1 ² = 0 * 0.01 + 1 * 0.6 + 1 * 0.9 = 1.5
o2 ² = 0 * 0.01 + 1 * 0.3 + 1 * 0.1 = 0.4
Is required. That is, the probability of mismatch is 79% [1.5 / (1.5 + 0.4) * 100], and the probability of match is 21% [0.4 / (1.5 + 0.4) * 100].

Although the above example was an example of comparison at three wavelengths, it is possible to perform the comparison more accurately by comparing every 1 nm (401 places) in the entire visible light range (380 nm to 780 nm). You can

In this way, by referring to the weight initial value table, it is possible to select a combination having the measurement object 1 having a commonality, and it is possible to calculate an approximate correction coefficient.

Alternatively, the update device may automatically create a new combination in which the measurement object ID is replaced with a measurement object ID having commonity in the selected combination, and stored in the database server. It is also possible to allow the user to input the evaluation of the similar combination, and to automatically create a new combination based on this evaluation and store it in the database server. As a result, even if the user or the like does not create a new combination table, the combination information increases, so that the labor of creating the combination table is reduced.

Further, in the above embodiment, the combination table is stored in the database server 4, and the calibration device 3 acquires the combination information from the database server 4 via the network. However, as shown in FIG. 14, the combination table may be stored and stored in the non-volatile memory (storage unit) 33 in the calibration device 3. With this configuration, the calibration device 3 does not need to acquire the combination information from the external database server 4. The operation of the calibration device 3 in FIG. 14 is the same as the operation of the calibration device 3 in the calibration system shown in FIG. 1, except that the combination information is acquired in the own device as described above.

The present invention can be used to calibrate a stimulus-type colorimeter that includes at least three color channels.

1 Object to be measured 2 Filter measuring device (first color measuring device)
3 Calibration device 31 CPU
33 non-volatile memory 34 measuring unit 35 discriminating unit 36 calibration unit 37 communication unit 4 database server 41 storage unit 5 spectrophotometer (second color measuring device)
6 External environment measurement section

Claims

One or more first identification information and one or more measurements for respectively identifying one or more first colorimetric devices of stimulus value type including at least three color channels One or a plurality of second identification information for specifying an object and spectral emission characteristics of the measurement object measured by a second colorimetric device using one or more spectral colorimetric methods , Storage means for storing in advance a plurality of combination information associated with each other,
When calibrating the first color measurement device that has measured the measurement target, based on the first identification information of the first color measurement device and the second identification information of the measurement target, A first colorimetric device that has performed the measurement, a determination unit that determines the optimum combination of the measurement target and the spectral emission characteristics of the measurement target from among the plurality of combination information stored in the storage unit. ,
Based on the spectral emission characteristic of the measurement target included in the combination discriminated by the discriminating unit and the spectral responsivity of the first colorimeter that has performed the measurement, the first colorimeter measures Calibration means to correct the measured value and
Calibration system with.
The calibration system according to claim 1, wherein the combination information is stored in advance in the storage means as a table.
Each combination in the combination information includes information for specifying the measurement position.
The calibration system according to claim 1 or 2, wherein the discrimination means determines the optimum combination based on the measurement position of the first color measuring device used for the measurement.
Each combination in the combination information includes information for specifying the measurement angle.
The calibration system according to any one of claims 1 to 3, wherein the discrimination means discriminates an optimum combination based on a measurement angle of a first color measuring device used for measurement.
Each combination in the combination information includes information on the measurement environment.
The calibration system according to any one of claims 1 to 4, wherein the discrimination means determines the optimum combination based on the measurement environment of the first color measuring device used for the measurement.
When the second information indicating the measurement object measured by the first color measuring device does not exist in the combination information stored in the storage unit, the determining unit approximates the spectral radiation characteristic. The calibration system according to any one of claims 1 to 5, wherein a combination of measurement objects is determined from the combination information.
The calibration system according to claim 6, wherein the storage means stores an initial value table of weights for discriminating combinations of measurement objects having similar spectral radiation characteristics.
The calibration system according to claim 6 or 7, wherein a user can input an evaluation of the combination determined by the determination means.
A correction coefficient based on the spectral emission characteristic of the measurement object and the spectral responsivity of the first color measurement device used for measurement is used as a first correction coefficient, and a measurement value obtained by the first measurement device is used as a second measurement. When the correction coefficient for calibrating to a value obtained by the apparatus is the second correction coefficient and the correction coefficient for associating the first correction coefficient and the second correction coefficient is the third correction coefficient, the storage means The combination stored in is included in the third correction coefficient.
The calibrating means calculates the first correction coefficient and calculates the second correction coefficient from the calculated first correction coefficient and the third correction coefficient included in the combination determined by the determining means. The calibration system according to any one of claims 1 to 8, wherein the correction coefficient of the above is calculated, and the measured value is corrected by using the calculated second correction coefficient.
The calibration system according to any one of claims 1 to 9, wherein the spectral responsivity of the first color measuring device is stored in the first color measuring device.
The calibration system according to any one of claims 1 to 9, wherein the spectral responsivity of the first color measuring device is stored in the storage means.
In the combination information, a third identification information for identifying the second color measuring device is combined in association with the first identification information, the second identification information, and the spectral radiation characteristic. The calibration system according to any one of claims 1 to 11.
One or more first identification information and one or more measurements for respectively identifying one or more first colorimetric devices of stimulus value type including at least three color channels One or a plurality of second identification information for specifying an object and spectral emission characteristics of the measurement object measured by a second colorimetric device using one or more spectral colorimetric methods , A storage means that stores a plurality of combination information associated and combined in advance, and
When calibrating the first color measurement device that has measured the measurement target, based on the first identification information of the first color measurement device and the second identification information of the measurement target, A first colorimetric device that has performed the measurement, a determination unit that determines the optimum combination of the measurement target and the spectral emission characteristics of the measurement target from among the plurality of combination information stored in the storage unit. ,
Based on the spectral emission characteristic of the measurement target included in the combination discriminated by the discriminating unit and the spectral responsivity of the first colorimeter that has performed the measurement, the first colorimeter measures Calibration means for correcting the measured values,
A calibration device equipped with.
One or more first identification information and one or more measurements for respectively identifying one or more first colorimetric devices of stimulus value type including at least three color channels One or a plurality of second identification information for specifying an object and spectral emission characteristics of the measurement object measured by a second colorimetric device using one or more spectral colorimetric methods , Is capable of communicating with an external database device provided with a storage unit that stores in advance a plurality of combination information associated with each other,
When calibrating the first color measurement device that has measured the measurement target, based on the first identification information of the first color measurement device and the second identification information of the measurement target, A first colorimetric device that has performed the measurement, a determination unit that determines the optimum combination of the measurement target and the spectral emission characteristics of the measurement target from among the plurality of combination information stored in the storage unit. ,
Based on the spectral emission characteristic of the measurement target included in the combination discriminated by the discriminating unit and the spectral responsivity of the first colorimeter that has performed the measurement, the first colorimeter measures Calibration means to correct the measured value and
Calibration device equipped with.
The calibration device according to claim 13 or 14, wherein the combination information is stored in advance in the storage means as a table.
Each combination in the combination information includes information for specifying the measurement position.
The calibration device according to any one of claims 13 to 15, wherein the discrimination means discriminates the optimum combination based on the measurement position of the first color measuring device used for the measurement.
Each combination in the combination information includes information for specifying the measurement angle.
The calibration device according to any one of claims 13 to 16, wherein the discrimination means determines the optimum combination based on the measurement angle of the first color measuring device used for the measurement.
Each combination in the combination information includes information on the measurement environment.
The calibration device according to any one of claims 13 to 17, wherein the discrimination means determines the optimum combination based on the measurement environment of the first color measuring device used for the measurement.
The discriminating means approximates the spectral radiation characteristics when the second information indicating the measurement object measured by the first color measuring device does not exist in the combination information stored in the storage means. The calibration device according to any one of claims 13 to 18, wherein a combination of measurement objects is determined from the combination information.
The calibration device according to claim 19, wherein the storage means stores an initial value table of weights for discriminating combinations of measurement objects having similar spectral radiation characteristics.
The calibration device according to claim 19 or 20, wherein a user can input an evaluation of the combination determined by the determination means.
A correction coefficient based on the spectral emission characteristic of the measurement object and the spectral responsivity of the first color measurement device used for measurement is used as a first correction coefficient, and a measurement value obtained by the first measurement device is used as a second measurement. When the correction coefficient for calibrating to a value obtained by the apparatus is the second correction coefficient and the correction coefficient for associating the first correction coefficient and the second correction coefficient is the third correction coefficient, the storage means And the third correction coefficient is included in the combination stored in
The calibrating means calculates the first correction coefficient and calculates the second correction coefficient from the calculated first correction coefficient and the third correction coefficient included in the combination determined by the determining means. 22. The calibration device according to claim 13, wherein the correction coefficient is calculated, and the measured value is corrected using the calculated second correction coefficient.
The calibration device according to any one of claims 13 to 22, wherein the spectral responsivity of the first color measurement device is stored in the first color measurement device.
The calibration device according to any one of claims 13 to 22, wherein the spectral responsivity of the first color measuring device is stored in the storage means.
In the combination information, a third identification information for identifying the second color measuring device is combined in association with the first identification information, the second identification information, and the spectral radiation characteristic. The calibration device according to any one of claims 13 to 24.
One or more first identification information and one or more measurements for respectively identifying one or more first colorimetric devices of stimulus value type including at least three color channels One or a plurality of second identification information for specifying an object and spectral emission characteristics of the measurement object measured by a second colorimetric device using one or more spectral colorimetric methods , A computer of a calibration device having a storage means for pre-storing a plurality of combination information associated with each other,
When calibrating the first color measurement device that has measured the measurement target, based on the first identification information of the first color measurement device and the second identification information of the measurement target, A determination step of determining the optimal combination of the first colorimetric device that has performed the measurement, the measurement target, and the spectral emission characteristics of the measurement target from among the plurality of combination information stored in the storage means. ,
Based on the spectral emission characteristic of the measurement target included in the combination determined by the determination step and the spectral responsivity of the first color measurement device that has performed the measurement, the first color measurement device determines Calibration steps to correct measurements and
A program to execute.
One or more first identification information and one or more measurements for respectively identifying one or more first colorimetric devices of stimulus value type including at least three color channels One or a plurality of second identification information for specifying an object and spectral emission characteristics of the measurement object measured by a second colorimetric device using one or more spectral colorimetric methods , A computer of a calibration device capable of communicating with an external database device provided with a storage means for storing in advance a plurality of combination information associated and combined,
When calibrating the first color measurement device that has measured the measurement target, based on the first identification information of the first color measurement device and the second identification information of the measurement target, A determination step of determining the optimal combination of the first colorimetric device that has performed the measurement, the measurement target, and the spectral emission characteristics of the measurement target from among the plurality of combination information stored in the storage means. ,
Based on the spectral emission characteristic of the measurement target included in the combination determined by the determination step and the spectral responsivity of the first color measurement device that has performed the measurement, the first color measurement device determines Calibration steps to correct measurements and
A program to execute.