JP6929917B2 - Information processing equipment, information processing methods, and programs - Google Patents

Description

The present invention relates to information processing that generates device characteristics from color measurement data of a color chart.

In order to confirm whether or not the color reproduction characteristics of the output device are sufficient, it is necessary to acquire the color reproduction characteristics of the output device. To acquire the color reproduction characteristics of the output device, for example, the color patch of the color chart displayed or output by the output device is measured (color measurement). The color chart is composed of, for example, a color patch of RGB data (729 colors) sliced in 9 slices (divided into 9 gradations) in the range of 0 ≦ R, G, B ≦ 255. When measuring a color patch of a color chart, for example, a two-dimensional measuring device is used to measure a color chart containing a plurality of color patches at once. When measuring a color patch of a printer color chart, a plurality of types of color charts may be measured. The color reproduction characteristics of the output device are called device characteristics.

The measurement data in the measurement of the color patch of such a color chart is affected by the in-plane unevenness of the output device and the time-dependent change of the output device. In order to obtain accurate output device characteristics, it is necessary to remove the effects of in-plane unevenness of the output device and aging of the output device. The in-plane unevenness is a color unevenness of a color output by an output device (for example, a density unevenness on the same paper surface).
Patent Document 1 discloses a device that reduces the influence of color unevenness when creating a profile (device characteristic) of a printer. In Patent Document 1, first, a color chart printed matter in which a plurality of color charts including a profile creation color patch and a color unevenness confirmation color patch are arranged is created. Then, a color chart including a color patch for confirming color unevenness having a large color difference from another color patch for confirming color unevenness is determined to be a color chart including an abnormal color patch. After that, the color chart containing the abnormal color patch is eliminated, and the remaining color chart is used to create the profile of the printer.

Japanese Unexamined Patent Publication No. 2013-42418

However, in Patent Document 1, since the entire color chart including the abnormal color patch is excluded, the non-abnormal color patch included in the excluded color chart is also excluded. Therefore, even color patches (color patches that are not abnormal) that are originally effective for acquiring device characteristics are excluded. Further, in Patent Document 1, in order to detect an abnormal color patch based on the determination of color unevenness by the color unevenness confirmation patch, it is necessary to create a color unevenness confirmation color patch separately from the profile creation color patch. be.
In view of the above points, an object of the present invention is to provide information processing capable of generating highly accurate device characteristics more efficiently.

The information processing device according to one aspect of the present invention is an information processing device that calculates a value for creating a profile of an output device using a color chart including color patches corresponding to a plurality of colors, and is based on the output device. for the color patches are arranged at different positions in the outputted the color chart were obtained by performing a plurality of color measurement, acquisition means for acquiring a measurement value corresponding to the plurality of colors, the acquisition the user interface displayed on the display unit after the plurality of times of color measurement based on the measured values, the display control to display the information which notifies that it is possible to re-measuring color after color measurement of said plurality of times For creating the profile using the means and at least a part of the acquired measurement values for a certain color among the plurality of colors and the measurement values obtained by the re-measurement. It has a calculation means for calculating a value.

According to the present invention, highly accurate device characteristics can be generated more efficiently.

It is a block diagram which shows the structure of the information processing apparatus of Embodiment 1. FIG. It is a functional block diagram of the information processing apparatus of Embodiment 1. It is a figure which shows the correspondence table of a patch number and RGB value. It is a figure which shows the structure of the color patch of a color chart. It is a flowchart which shows the process flow of Embodiment 1. FIG. It is a figure which shows an example of the message displayed by the patch characteristic exclusion result display part. It is a block diagram which shows the structure of the information processing apparatus of Embodiment 2. It is a flowchart which shows the flow of the process of Embodiment 2. It is a figure which shows another example of the message displayed by the patch characteristic exclusion result display part. It is a figure which shows an example of the color chart which the chart recreating part creates.

Hereinafter, preferred embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are examples of means for realizing the present invention, and should be appropriately modified or changed depending on the configuration of the apparatus to which the present invention is applied and various conditions. It is not limited to the embodiment.

Embodiment 1
The information processing device in this embodiment is a device that generates color reproduction characteristics of an output device. In the following description, the color reproduction characteristic of the output device is referred to as a device characteristic.
The configuration of the information processing apparatus according to the first embodiment will be described with reference to the block diagram shown in FIG. The information processing device of the first embodiment includes a CPU 101, a ROM 102, a RAM 103, an operation unit 104, an image processing unit 105, a monitor 106, an input device 107, an output device 108, and a measuring instrument 109. .. The components of the information processing apparatus are interconnected by a bus 110.
The ROM 102 stores software (computer programs) such as an operating system, an information processing application program, and a device driver required for the information processing device.

The CPU 101 controls the RAM 103, the operation unit 104, the image processing unit 105, the monitor 106, the input device 107, and the output device 108 according to the operating system stored in the ROM 102.
The RAM 103 functions as a work area and a temporary save area for data handled by various control programs and data input from the operation unit 104.
The operation unit 104 inputs data to the input device 107, the output device 108, and the like. Data input is performed by, for example, a user of the information processing apparatus. Further, the operation unit 104 receives, for example, an instruction for starting the information processing application program stored in the ROM 102 or the image processing unit 105 from the user.

The image processing unit 105 is composed of an HDD and executes arithmetic processing for performing image processing in the present embodiment. The image processing unit 105 also stores software necessary for this arithmetic processing. The image processing unit 105 also has a function as an image processing device in the present embodiment.
The monitor 106 displays the processing result of the image processing unit 105, the data input by the operation unit 104, and the like. The processing result or the like displayed on the monitor 106 can be displayed in a state in which the user can operate it. That is, the monitor 106 can function as a user interface. The monitor 106 includes, for example, a liquid crystal display device.
The output device 108 is a printer that outputs (prints) an image in the present embodiment. The measuring instrument 109 measures the Lab value of the color patch output by the output device 108. The measuring instrument 109 has, for example, a spectral radiance meter. When the measuring instrument 109 measures the Lab value of the color patch in advance, or when the Lab value of the color patch is provided to the information processing device from the outside of the information processing device, the measured value is held in the image processing unit 105 ( Will be stored).

In the following description, various processes realized by the CPU 101 operating various software stored in the ROM 102 and the image processing unit 105 will be described.
First, the CPU 101 activates the information processing application stored in the ROM 102 or the image processing unit 105 according to the user's instruction to the operation unit 104. Then, the CPU 101 can expand the information processing application to the RAM 103 and display the expanded contents necessary for the user (for example, an error message described later) on the monitor 106. The CPU 101 functions as a display control unit for displaying a predetermined item or the like on the monitor 106. When displaying the expanded contents of the information processing application on the monitor 106, the monitor 106 functions as a user interface as described above. Subsequently, various data stored in the image processing unit 105 are transferred to the RAM 103 based on a command from the CPU 101. Predetermined arithmetic processing is performed on the various data transferred to the RAM 103 according to a command from the CPU 101. Then, the result of the arithmetic processing is displayed on the monitor 106 or stored in the image processing unit 105.

Next, in the information processing apparatus having the above configuration, a process in which the information processing application generates the device characteristics of the output device 108 based on the command from the CPU 101 will be described.
FIG. 2 is a functional block diagram of the information processing device of the present embodiment. The information processing device includes a patch measurement value acquisition unit 201, a patch abnormality value detection unit 202, a patch abnormality value exclusion unit 203, a patch average value calculation unit 204, a device characteristic generation unit 205, and a patch abnormality value exclusion result display. It has a part 206 and. The measured value of the color patch is the Lab value. Here, the Lab value is, for example, a value using CIE (Commission internationale de l'eclairage) L * a * b * coordinates.

In FIG. 2, the patch measurement value acquisition unit 201 acquires the color patch measurement value from the image processing unit 105 or the measuring device 109. Since the measured value of the color patch can also be referred to as a patch characteristic, the patch measurement value acquisition unit 201 can also be referred to as a patch characteristic acquisition unit.
The patch abnormal value detection unit 202 detects whether or not the patch measured value is an abnormal value by determining whether or not the patch measured value is an abnormal value. The patch abnormal value exclusion unit 203 excludes the abnormal value detected by the patch abnormal value detection unit 202.
The patch abnormal value exclusion result display unit 206 determines whether there is a predetermined number of patch measurement values remaining after excluding the abnormal value of the patch measurement value, and then displays the patch abnormal value exclusion result in a message. If the patch measurement value is less than the predetermined number, it is considered that the patch measurement accuracy is insufficient. Therefore, the patch abnormal value exclusion result display unit 206 displays, for example, a message "The patch measurement accuracy is out of the guaranteed range". Is displayed. This message is an error message and is displayed on the monitor 106 (FIG. 1).

The patch average value calculation unit 204 calculates the average value (patch average measurement value) of the patch measurement values remaining after excluding the patch measurement values having abnormal values for each of the same colors.
The device characteristic generation unit 205 generates the device characteristics of the output device 108 by storing the patch average measured values of each color in a predetermined format. For example, a vertical column for the L value, a vertical column for the a value, and a vertical column for the b value are provided on the right side of the vertical column of "B" in FIG. 3, which will be described later. Then, the device characteristic generation unit 205 stores the patch average measurement value of the Lab value calculated by the patch average value calculation unit 204 in the columns of the L value, the a value, and the b value. The reason for using the patch average measured value is to cancel or suppress a small variation (variation between patch measured values) of the patch measured value caused by the output device 108.

As described above, the output device 108 of this embodiment is a printer. In the following description, a case where the color characteristics (device characteristics) of the printer are generated by averaging the measured values of the arranged color patches included in each of the five color charts output by the printer will be described.
In the present embodiment, in order to acquire the device characteristics by excluding the influence of in-plane unevenness and aging of the output device (printer) 108, among the measured values of the same color patch output a plurality of times (5 times). Exclude patch measurements that are significantly different from other color patches. After that, the average value of the patch measurement values other than the excluded patch measurement values is calculated. By excluding patch measurements that have values that are significantly different from other color patches, the effects of large fluctuations such as in-plane unevenness of the output device 108 are reduced (or eliminated). Outputting 5 times means printing 5 color charts with a printer.

In this embodiment, the five color charts are the color charts A, B, C, D and E. Each of the color charts A to E includes a plurality of color patches in which RGB data (729 colors) are arranged in 9 slices in the range of 0 ≦ R, G, B ≦ 255 in each color chart. FIG. 3 shows the correspondence between the patch number and the RGB value of the color patch. The patch number is No. 1-No. 729. Further, each of the RGB values is 0 to 255.

The five color charts A to E differ in the arrangement (patch configuration) of the color patches on the color chart. FIG. 4 shows the arrangement of the color patches of the color charts A to E in the present embodiment. The numbers assigned to the color patches in the color charts A to E are patch numbers. On each color chart, 729 color patches are arranged in a predetermined order. Specifically, the color chart A shows the patch number No. From 1 to the lower right, the patch number No. Up to 729, 729 color patches are placed. The color chart B shows the patch number No. From 151, patch number No. from top left to bottom right. Up to 150 patches are placed. The color chart C shows the patch number No. From 301 to the lower right, patch number No. Up to 300 patches are placed. On the color chart D, the patch numbers No. 451 are displayed in order from the upper left to the lower right. Up to 450 color patches are placed. The color chart E shows the patch number No. From 601 to the upper left to the lower right, the patch number No. Up to 600 color patches are placed.

Color patches having the same patch number in the five color charts A to E are color patches of the same color. As shown in FIG. 4, the positions where the color patches having the same number appear are different in the color charts A to E.
Hereinafter, the process executed by the information processing apparatus shown in FIG. 2 will be described with reference to the flowchart of FIG.

In S501, the patch measurement value acquisition unit 201 acquires the patch measurement values (Lab values) of the color charts A to E. The Lab value of the color chart A is ( _LAi , _aAi , _bAi ), the Lab value of the color chart B is ( _LBi , _aBi , _bBi ), and the Lab value of the color chart C is ( _LCCi). , A _Ci , b _Ci ). The Lab value of the color chart D is (L _Di , a _Di , b _Di ), and the Lab value of the color chart E is (L _Ei , a _Ei , b _Ei ). Here, i is 1 ≦ i ≦ 729, which is the same as the number of the patch number.
When the image processing unit 105 already holds the Lab values of the color charts A to E, the patch measurement value acquisition unit 201 may acquire the Lab values from the image processing unit 105. Otherwise, the patch measurement value acquisition unit 201 acquires the Lab value directly from the measuring instrument 109.

In S502, the patch abnormal value detection unit 202 first performs preprocessing before detecting the patch abnormal value. _{As a preprocessing, the average value (Lavei} , _aavei , _bavei ) (1 ≦ i ≦ 729) of the patch measurement values of the same color, that is, the same patch number in the color charts A to E is calculated by Equation 1. In Equation 1, i is the patch number.
L _avei = ( _{LA Ai} + L _Bi + L _Ci + L _Di + L _Ei ) / 5
a _avei = (a _Ai + a _Bi + a _Ci + a _Di + a _Ei ) / 5
b _avey = (b _Ai + b _Bi + b _Ci + b _Di + b _Ei ) / 5 (Equation 1)
In S503, the patch abnormal value detection unit 202 detects the patch measurement value which is considered to be affected by the time-dependent change or the in-plane unevenness of the output device (printer) as the abnormal value. Specifically, the patch outlier detection unit 202, patch measurement value _{(L Ai, a Ai, b} Ai) ~ (L Ei, a Ei, b Ei) among the average values calculated in _{S502 (L} avei , A _avei , _avei ) and the patch measurement value having a large color difference ΔE is detected as an abnormal value. In the present embodiment, when the color difference ΔE is equal to or greater than the threshold value ΔEt, it is determined that the color difference ΔE is large. That is, when the color difference ΔE is equal to or greater than the threshold value ΔEt, the patch measurement value is assumed to be an abnormal value. Further, in the present embodiment, it is assumed that the threshold value ΔEt is one value that does not depend on the color of the color patch. The threshold value ΔEt can be referred to as a predetermined value.

_{First, (L Ai, a Ai,} b Ai) ~ for each _{(L Ei, a Ei, b} Ei) (1 ≦ i ≦ 729), (L avei, a avei, b avei) color difference Delta] E _Ai ~ with ΔE _Ei is calculated by the following formula.
^{_{ΔE Ai = ((L Ai -L}} avei) 2 + (a Ai -a avei) 2 + (b Ai -b avei) 2) 1/2
ΔE _Bi = ((L _Bi- L _avei ) ² + (a _Bi- a _avei ) ² + (b _Bi- b _avei ) ² ) ^1/2
ΔE _Ci = ((L _Ci- L _avei ) ² + (a _Ci- a _avei ) ² + (b _Ci- b _avei ) ² ) ^1/2
ΔE _Di = ((L _Di- L _avei ) ² + (a _Di- a _avei ) ² + (b _Di- b _avei ) ² ) ^1/2
ΔE _Ei = ((L _Ei- L _avei ) ² + (a _Ei- a _avei ) ² + (b _Ei- b _avei ) ² ) ^1/2
(Equation 2)

Next, ΔE _Ai , ΔE _Bi , ΔE _Ci , ΔE _Di , and ΔE _Ei are compared with ΔEt, and the _{patch measurement value such that ΔE Xi} > ΔEt (X = A to E, 1 ≦ i ≦ 729) is set as an abnormal value. .. The patch measurement value detected as an abnormal value here is assumed to be a value affected by in-plane unevenness or aging of the printer, and is not used for generating device characteristics described later.
_{In S504, the patch abnormal value exclusion unit 203 sets a flag f Xi} (X = A to E, 1 ≦ i ≦ 729) indicating whether or not the patch is an abnormal value for each patch measurement value. The value of the flag of the patch measurement value determined to be an abnormal value in S503 is set to 0, and the value of the flag of the other patch measurement value is set to 1.

In S505, the patch abnormal value exclusion result display unit 206 determines whether or not the patch measurement values of each color are equal to or greater than a predetermined number. In the present embodiment, the average value of the patch measurement values is calculated to generate the device characteristics in order to cancel or suppress the variation between the patch measurement values caused by the output device. However, if the number of patch measurements is less than a predetermined number, it may not be possible to cancel or suppress variations between patch measurements. That is, if the number of patch measurement values becomes smaller than a predetermined number as a result of excluding the patch abnormal values in S504, it may not be possible to cancel or suppress the variation between the patch measurement values. Therefore, in S505, it is determined whether or not the number of patch measurement values of each color is a predetermined number or more.

For each patch number i, the patch abnormal value exclusion result display unit 206 determines whether or not there is a necessary number of patches to cancel or suppress the variation in the patch measurement value by the following equation.
Σ (f _Xi ) <N (X = A to E) (Equation 3)
Here, N is the number of patches that are assumed to be necessary to cancel the variation in the patch measurement value. When Equation 3 is satisfied, the number of patch measurement values is less than a predetermined number. In this embodiment, the value of N is 4. That is, in the present embodiment, the device characteristics are generated using the patch measurement values (four or more patch measurement values) of four or more color charts out of the five color charts A to E.

The patch abnormal value exclusion result display unit 206 makes a determination according to Equation 3 for all patch numbers i, and _{if there is a patch number i such that Σ (f Xi} ) <N, the patch number i is retained (stored). If there is a patch number i such that Σ (f _Xi ) <N, the determination in S505 becomes No, so the process proceeds to S506. If there is no patch number i such that Σ (f _Xi ) <N, the determination in S505 is Yes, so the process proceeds to S507.

In S506, the patch abnormal value exclusion result display unit 206 displays a message about the patch abnormal value exclusion result. As shown in FIG. 6, for example, the patch abnormal value exclusion result display unit 206 has _{a table 601 of the patch number i in which Σ (f Xi} ) <N held in S505 and the RGB information corresponding to the patch number i. Is displayed. Further, the patch abnormal value exclusion result display unit 206 displays a message indicating that the calculation accuracy of the patch measurement value is out of the guaranteed range. The patch abnormal value exclusion result display unit 206 also displays an OK button 602 below Table 601. After confirming the message shown in FIG. 6, the printer user presses the OK button 602. When the OK button 602 is pressed, the patch abnormal value exclusion result display unit 206 erases the display contents (message in FIG. 6, Table 601 and OK button 602).
After S506, the process proceeds to S507. That is, in the present embodiment, S507 is reached regardless of whether the determination of S505 is Yes or No.

In S507, the patch average value calculation unit 204 obtains the patch average measurement value of each color by the equation 4. Specifically, the patch average value calculation unit 204 calculates the patch average measurement value of each color by averaging the measurement values of the color patches of the same color except for the color patches excluded by the patch abnormal value exclusion unit 203. ..
Li _i = Σ (L _Xi * f _Xi ) / Σ (f _Xi )
a _i = Σ (a _Xi * f _Xi ) / Σ (f _Xi )
_{b i = Σ (b Xi *} f Xi) / Σ (f Xi)
(X = A to E, 1 ≦ i ≦ 729) (Equation 4)
Device characteristic generation section 205 patch measured average value S508 in _{(L i, a i, b} i) (1 ≦ i ≦ 729) the image processing unit 105 as the device characteristic (printer property) by storing in a predetermined format Generate device characteristics and end the flowchart of FIG.

As described above, in the present embodiment, among the measured values of the color patch of the same color output a plurality of times (5 times), the patch measured values having a value (abnormal value) significantly different from other color patches are excluded and the rest. Calculate the average of the patch measurements of. In other words, the measured values of the color patch that is affected by the in-plane unevenness of the printer and the change over time are considered to have values that are significantly different from those of other color patches, and are affected by the in-plane unevenness of the printer. Exclude color patches from generating device characteristics. Then, the color characteristics (printer characteristics) of the printer are acquired and generated using the measured values of the color patches that are not affected by the in-plane unevenness of the printer. In this embodiment, only the patch measurement value having an abnormal value is excluded. That is, it does not exclude the entire color chart, including patch measurements with outliers. Therefore, it is possible to generate the color characteristics of the printer (output device) without excluding the patch measurement values that are not affected by the in-plane unevenness of the output device and the change with time. In this embodiment, it can be said that abnormal color patches are efficiently excluded. Further, in the present embodiment, when detecting a color patch affected by in-plane unevenness or the like, a color patch for confirming in-plane unevenness is not used.

In the present embodiment, the influence of small fluctuations such as during continuous output is suppressed (or eliminated) by averaging the measured values of the color patches. In other words, the patch measurement values that are not so different as to be judged as abnormal values, but have a certain difference, improve the accuracy of the patch measurement values by adopting the average value of those patch measurement values.
Further, in the present embodiment, when the number of measured values after excluding the patch measured values having abnormal values is less than a predetermined number, the reliability of the above-mentioned average value is low (measurement accuracy is out of the guaranteed range). I think that I am displaying an error message to the user. The user who sees the error message can recognize that the average value of the color patch measurements is calculated using less than a predetermined number of measurements.

In the above embodiment, the output device 108 is a printer, but the output device 108 is not limited to the printer. For example, the output device 108 may be a display device. Since the display device does not print the color charts A to E, the color charts A to E are displayed on the display of the display device, patch measurement values are acquired, abnormal values are detected / excluded, and device characteristics are generated.
In the above-described embodiment, the color difference ΔE used when detecting an abnormal value from the patch measurement values is a unique value (fixed value) regardless of the color of the color patch, but it is different for each color of the color patch. The color difference ΔE may be changed. Further, the color difference used when detecting an abnormal value is not limited to ΔE, and ΔL, Δa, and Δb may be used. Color difference ΔL in this case _{is (L Ai -L} avei).

In the above-described embodiment, the patch measurement value is a Lab value, but an XYZ value, an RGB value, or the like may be used. Further, although N in Equation 3 is set to 4, a value other than 4 may be used (for example, 3 or 5).
For a color patch of a color in which the number of patch measurement values is less than a predetermined number, the patch average measurement value may be calculated using (substituting) the patch measurement values in the vicinity of the corresponding patch. For example, in the state after excluding the color patch having an abnormal value, the patch number No. When the number of patches of 2 is 3, the patch number No. of the color chart A. The measured value of the patch of No. 3 is the patch number No. It may be used as the measured value of the patch of 2. That is, as a result of removing the color patch having an abnormal value from the color chart, the patch average value calculation unit 204 also determines the measured value of the color patch of the color close to the color for the color whose number of color patches is less than the predetermined number. You may use it to calculate the average measured value.

Embodiment 2
In the first embodiment, as a result of excluding the patch measurement values that are abnormal values, if there is a color in which the number of patch measurement values is less than the predetermined number, a message indicating that the patch measurement accuracy is out of the guaranteed range is displayed. Even if the number of patch measurement values was less than the predetermined number, the patch average measurement value was calculated. The present invention is not limited to such embodiments. For example, if there is a color whose number of patch measurement values is less than a predetermined number as a result of excluding patch measurement values that are abnormal values, a color chart composed of color patches of that color is generated, and the color chart is re-output. The result of the remeasurement may be used to calculate the patch average measurement value. Such an information processing device will be described below as the second embodiment.

The information processing apparatus of the second embodiment will be described with reference to FIGS. 1 and 7 to 10. The configuration of the information processing apparatus of the second embodiment is the same as the configuration of the information processing apparatus of the first embodiment shown in FIG. Also in the second embodiment, it is assumed that the output device 108 is a printer. In the following description, the differences from the first embodiment will be described. For the same components as in embodiment 1, the same reference numerals as in embodiment 1 are used.
FIG. 7 is a functional block diagram of the information processing device of the second embodiment. The difference from the first embodiment (FIG. 2) is that the information processing apparatus of the second embodiment includes the chart recreating unit 701. The chart recreating unit 701 creates a color chart composed of color patches of colors whose number of patch measurement values is less than a predetermined number. The same parts as those in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted.

Next, the process executed in the information processing apparatus shown in FIG. 7 will be described with reference to the flowchart of FIG. Each of S801 to S805 executes the same processing as S501 to S505 of FIG. 5 used in the description of the first embodiment.
If the determination in S805 is No, the process proceeds to S806. In S806, the patch abnormal value exclusion result display unit 206 displays a message about the patch exclusion result. Specifically, the patch abnormal value exclusion result display unit 206 indicates a message regarding a color patch of a color in which the number of patch measurement values is less than a predetermined number. That is, the patch abnormal value exclusion result display unit 206 indicates a message regarding the color patch of the patch number i _{in which Σ (f Xi) <N in S805.} In the present embodiment, the patch number i such _{that Σ (f Xi) <N in S805 is No.} 28, No. 91, No. 163 and No. It is assumed that it is 649.

FIG. 9 shows an example of the message indicated by the patch abnormal value exclusion result display unit 206. In the example of FIG. 9, the patch abnormal value exclusion result display unit 206 _{together with Table 901 that displays the patch number i in which Σ (f Xi} ) <N held in S805 and the RGB information corresponding to the patch number i. , Display a message recommending re-output and re-measurement of the color patch. The patch abnormal value exclusion result display unit 206 also displays the "Yes" button 902 and the "No" button 903. The message of FIG. 9 may include a message indicating that the patch measurement accuracy is out of the guaranteed range, as in the message shown in FIG.

In S807, the chart recreating unit 701 determines whether or not to re-output the color patch. Specifically, the chart recreating unit 701 determines whether or not the "No" button 903 displayed accompanying the message of FIG. 9 is selected by the user. When the "No" button 903 is selected by the user (S807: No), the process proceeds to S810, and the same processing as in S507 and S508 of the first embodiment is executed in S810 and S811. If the "Yes" button 902 in FIG. 9 is selected by the user (S807: Yes), the process proceeds to S808.
In S808, the chart recreating unit 701 creates a color chart composed of the color patches of patch number i such _{that Σ (f Xi) <N held in S805 again, and outputs the color chart from the printer which is the output device 108.} FIG. 10 shows an example of the color chart 1000 created in S808. As shown in FIG. 10, in the present embodiment, five color patches (P, Q, R, S, T) having the same patch number are arranged in a horizontal row. Let M be the number of color patches (5).

In S809, the measured value of the color patch of the color chart created in S808 is acquired. The measured value of the color patch may be acquired from the image processing unit 105 or directly from the measuring instrument 109, as in S801. The patch number is No. 28, No. 91, No. 163, No. The measured values of the 649 color patches are (L _Pj , a _Pj , b _Pj ), (L _Qj , a _Qj , b _Qj ), ( _LRj , a _Rj , b _Rj ), ( _LSj , a _Sj , b). _Sj ), ( _LTj , a _Tj , b _Tj ). Here, j = 28, 91, 163, 649.
In S810, the patch average value calculation unit 204 averages the measured values of the color patches of the same color and calculates the average measured value of each color. The processing of S810 is executed when the determination of S805 is Yes, the determination of S805 is No and the determination of S807 is No, and the determination of S805 is No and the determination of S807 is Yes. In the present embodiment, the process of S810 executed when the determination of S805 is Yes is the same as the process of S810 executed when the determination of S805 is No and the determination of S807 is No. This process is different from the process executed when the determination in S805 is No and the determination in S807 is Yes. First, the process of S810 executed when the determination of S805 is Yes will be described.

For the color patch having the patch number in which Σ (f _Xi ) ≥ N in S805 (that is, when the determination in S805 is Yes), the patch average measured value is calculated by the following equation as in the first embodiment.
Li _i = Σ (L _Xi * f _Xi ) / Σ (f _Xi )
a _i = Σ (a _Xi * f _Xi ) / Σ (f _Xi )
_{b i = Σ (b Xi *} f Xi) / Σ (f Xi)
(X = A to E, 1 ≦ i ≦ 729 and i ≠ 28, 91, 163, 649) (Equation 5)
On the other hand, when the determination of S805 is No and the determination of S807 is Yes (that is, when Σ (f _Xi ) <N in S805 and the patch measurement value is newly acquired in S809), the patch average measurement value is , Calculated by the following formula.
L _j = Σ (L _Xj * f _Xj ) / M
a _j = Σ (a _Xj * f _Xj ) / M
b _j = Σ (b _Xj * f _Xj ) / M
(X = P to T, j = 28, 91, 163, 649) (Equation 6)

S811 Oite, the device characteristic generation section 205, stored patch average measurement patch average value calculation unit 204 calculates _{(L i, a i, b} i) (1 ≦ i ≦ 729) as the device characteristics in a predetermined form By doing so, the device characteristics are generated and the flowchart of FIG. 8 is terminated.
As described above, in the second embodiment, the patch measurement value having a value significantly different from that of other color patches is excluded from the measurement values of the color patch of the same color output a plurality of times (S804). As a result, when there is a color in which the number of patch measurement values is less than a predetermined number (S805: No), a color chart composed of color patches of the color can be regenerated as needed (S807). .. Then, the color chart was re-output (S808) and re-measured (S809) so that the patch average measured value could be calculated (S810).

Also in the second embodiment, when acquiring (generating) the device characteristics, only the patch measurement value having an abnormal value is excluded. That is, it does not exclude the entire color chart, including patch measurements with outliers. Therefore, it is possible to generate the color characteristics of the output device without excluding the patch measurement values that are not affected by the in-plane unevenness of the output device and the change with time. It can be said that the present embodiment also efficiently excludes abnormal color patches.
The patch average measured values were calculated in S809 using all the patch measured values included in the color chart recreated in S808, but the abnormal values to be performed in S803 and S804 with respect to these patch measured values. Detection and exclusion may be performed. Further, in FIG. 10, five color patches having the same patch number are arranged (P, Q, R, S, T), but the number M of the arranged color patches is not limited to five.

In the modified embodiment 1, in the flowchart of FIG. 5, the patch abnormal value exclusion result display unit 206 displays the patch exclusion result message only when the determination in S505 is No (S506), but the determination in S505. The message may be displayed even when is Yes. When the determination in S505 is Yes, the message displayed by the patch abnormal value exclusion result display unit 206 is not an error message but a message indicating to the user that the number of patch measurement values is not insufficient. Similarly, a message may be displayed even when the determination in S805 of the second embodiment is Yes.

The message in FIG. 6 is not limited to "the measurement accuracy of the color patch is out of the guaranteed range for the colors in the table below". For example, the message in FIG. 6 may be "Reprint and remeasurement of color patches are recommended for the colors in the table below".
The present invention supplies a recording medium on which a program code of software that realizes the functions of the above-described embodiment (for example, the steps shown by the above flowchart) is recorded to a system or an information processing device connected to the information processing device. It can also be realized by doing so. In this case, the computer (CPU, MPU, etc.) of the system or the information processing apparatus realizes the function of the above-described embodiment by reading and executing the program code stored in the recording medium so that the computer can read it. Further, the program may be executed by one computer or may be executed by interlocking a plurality of computers.

108 ... Output device, 201 ... Patch measurement value acquisition unit, 202 ... Patch abnormal value detection unit, 203 ... Patch abnormal value exclusion unit, 204 ... Patch average value calculation unit, 206 ... Patch abnormal value exclusion result display unit, A to E … Color chart

Claims (12)

An information processing device that calculates values for creating a profile of an output device using a color chart that includes color patches that correspond to multiple colors.
The output with the device the color patches are arranged at different positions in the outputted the color chart, the plurality of color measurement was obtained by performing, acquiring means for acquiring a measurement value corresponding to the plurality of color When,
The user interface displayed on the display unit after the plurality of times of color measurement based on the obtained measured values, to display the information which notifies that it is possible to re-measuring color after color measurement of said plurality of times Display control means and
For a certain color among the plurality of colors, a value for creating the profile is calculated using at least a part of the acquired measured values and the measured values obtained by the re-measurement. Calculation method and
An information processing device characterized by having. Said display control means, said image including said and acquired measured values corresponding to the color to be the re colorimetry target among the plurality of colors, and a button for receiving an instruction of said re colorimetry The information processing apparatus according to claim 1, wherein the information processing device is displayed on a display unit. The information processing apparatus according to claim 1 or 2, wherein the recolor measurement is to measure a color patch in a color chart different from the color chart. Any of claims 1 to 3, wherein the color chart measured by the recolor measurement is a color chart in which the number of color patches is smaller than that of the color chart corresponding to the acquired measured value. The information processing device according to paragraph 1. The display control means causes the display unit to display a warning when the color difference of the measured value corresponding to the certain color included in the acquired measured value is large between the plurality of color measurements. The information processing apparatus according to any one of claims 1 to 4, which is characterized. The calculation means uses the acquired measured value to perform the profile when the color difference of the measured value corresponding to the certain color included in the acquired measured value is small between the plurality of color measurements. When the color difference is large, the profile is created by using at least a part of the acquired measured values and the measured values obtained by the recolor measurement. The information processing apparatus according to any one of claims 1 to 5, wherein the value is calculated. The information processing device according to claim 5 , wherein the display control means does not display the information and the warning on the display unit when the color difference is small. The acquisition means according to any one of claims 1 to 7, wherein the acquisition means acquires the measured value of each color patch in each of the plurality of color charts obtained by outputting the output device a plurality of times. The information processing device described. The calculation means calculates the average value of at least a part of the acquired measured values and the measured values obtained by the re-measurement as a value for creating the profile for the certain color. The information processing apparatus according to any one of claims 1 to 8. The calculation means calculates an average value of the acquired measured value and the measured value obtained by the re-measurement, excluding the measured value that is not suitable for creating the profile, for the certain color. The information processing apparatus according to any one of claims 1 to 9, wherein the information processing apparatus is calculated as a value for creating the profile. A program for causing a computer to function as each means of the information processing apparatus according to any one of claims 1 to 10. An information processing method that calculates values for creating a profile of an output device using a color chart that includes color patches that correspond to multiple colors.
For the color patches are arranged at different positions in the outputted the color chart by the output device, obtained by performing a plurality of color measurement, and obtaining a measurement value corresponding to the plurality of color ,
The user interface displayed on the display unit after the plurality of times of color measurement based on the obtained measured values, to display the information which notifies that it is possible to re-measuring color after color measurement of said plurality of times Steps and
For a certain color among the plurality of colors, a value for creating the profile is calculated using at least a part of the acquired measured values and the measured values obtained by the re-measurement. Steps to do and
An information processing method characterized by having.

Images