JP6643107B2 - CONTROL DEVICE, CONTROL METHOD, AND PROGRAM - Google Patents

Description

  The present invention relates to a control device.

  In the image display device, display unevenness occurs due to variations in members and the like. For example, in a liquid crystal display device, display unevenness due to thickness unevenness of a liquid crystal layer, thickness unevenness of a color filter, unevenness of light emission of a light source, and the like occur. As a method of reducing display unevenness, a method of reducing display unevenness by image processing, a method of reducing display unevenness by controlling light emission of a light source, and the like are known.

  Further, in the image display device, the characteristics of the members change due to aging of the members. As a result, the display characteristics of the image display device change. Therefore, in the image display device, it is necessary to periodically update the correction value for correcting the display characteristics.

  As a method of updating a correction value, a method of measuring a color distribution on a display surface (screen) using a two-dimensional colorimeter and updating the correction value based on a measurement result is known. In this method, it is necessary to adjust the distance between the image display device and the two-dimensional colorimeter, the inclination of the two-dimensional colorimeter with respect to the image display device, and the like. Further, it is necessary to perform measurement in a dark room environment in order to remove the influence of external light.

  However, installing a device or preparing a dark room environment so that the distance and the inclination have desired values places a heavy burden on the user. Therefore, there has been proposed a method of performing measurement at a plurality of positions in a screen using a contact-type colorimeter and updating a correction value based on the measurement result.

  In the above method using a contact-type colorimeter, measurement (colorimetry) is performed while the user moves the colorimeter, so that accurate measurement may not be performed. Therefore, a method for assisting a user in performing a colorimetric operation has been proposed (for example, Patent Document 1). According to the technology disclosed in Patent Document 1, when a measured value of a color chart displayed on a screen is an abnormal value, warning information is added to the color chart and displayed. Thereby, the user is visually notified that the measured value is an abnormal value. However, according to the technology disclosed in Patent Document 1, since the warning information is displayed, the warning information hinders the re-measurement of the color chart.

JP 2011-141253 A

  The present invention makes it possible for a user to easily grasp whether or not an accurate measurement has been performed for a position in a screen, and also allows the user to efficiently perform measurement for each position in the screen. The purpose is to provide a technology that can do.

A first aspect of the present invention provides:
A control device connected to a display unit and a measuring device that measures at least one of luminance and color of a part of an image displayed on the display unit,
Acquisition means for acquiring the position of the screen of the display means corresponding to the measurement position of the measuring instrument,
When the measurement value of at least one of the luminance and the color obtained from the measuring device satisfies a predetermined condition, a control unit that updates a display of the position of the display unit,
Equipped with a,
The control means includes:
A range corresponding to the measurement position based on a first measurement value for the second measurement position acquired by the measurement device in a state where a predetermined image is displayed at the second measurement position, and a threshold corresponding to the measurement position. And determine
When the second measurement value for the measurement position obtained by the measurement device while the predetermined image is displayed at the measurement position is included in the range, updating the display of the position on the display unit,
A control device characterized in that:

A second aspect of the present invention provides:
Acquisition step of acquiring the position of the screen of the display means, which corresponds to the measurement position of the measuring device that measures at least one of the luminance and the color of a part of the image displayed on the display means,
A control step of updating a display of the position of the display means, when a measured value relating to at least one of the luminance and the color obtained from the measuring device satisfies a predetermined condition;
Have a,
In the control step,
A range corresponding to the measurement position based on a first measurement value for the second measurement position acquired by the measurement device in a state where a predetermined image is displayed at the second measurement position, and a threshold corresponding to the measurement position. And determine
When the second measurement value for the measurement position obtained by the measurement device while the predetermined image is displayed at the measurement position is included in the range, updating the display of the position on the display unit,
A control method characterized by the following.

  A third aspect of the present invention is a program that causes a computer to execute each step of the above-described control method.

  ADVANTAGE OF THE INVENTION According to this invention, it can make a user easily grasp | ascertain whether the accurate measurement was performed with respect to the position in a screen, and also efficiently performed the measurement about each position in a screen to a user. Can be made.

FIG. 2 is a block diagram illustrating a configuration example of an image display device according to the embodiment. FIG. 3 is a diagram illustrating an example of an LUT used in unevenness reduction processing according to the present embodiment. FIG. 5 is a diagram illustrating an example of a state of measurement according to the present embodiment. FIG. 4 is a diagram illustrating an example of a state in which an initial state of the measurement unit according to the embodiment is realized. 4 is a flowchart illustrating an example of a processing flow of the image display device according to the present embodiment. FIG. 5 is a diagram illustrating an example of a state of measurement according to the present embodiment. FIG. 4 is a diagram illustrating an example of a display according to the embodiment. FIG. 4 is a diagram illustrating an example of a display according to the embodiment.

  Hereinafter, embodiments of the present invention will be described. Hereinafter, an example in which the display control device according to the present embodiment is provided in an image display device will be described, but the display control device may be a device separate from the image display device.

  FIG. 1 is a block diagram illustrating a configuration example of the image display device according to the present embodiment. As shown in FIG. 1, the image display device according to the present embodiment includes an image correction unit 100, a display unit 101, a measurement unit 102, a position detection unit 103, a measurement determination unit 104, and an image switching unit 105. Note that each of the image correction unit 100, the display unit 101, the measurement unit 102, the position detection unit 103, the measurement determination unit 104, and the image switching unit 105 may or may not be separate hardware. Is also good. The functions of two or more functional units may be realized by common hardware.

The image correction unit 100 corrects the image data I1 input to the image correction unit 100 so that a desired image is obtained as a display image (an image displayed on a screen of the display unit 101). Thereby, the display image data I2 is generated. In the present embodiment, the image correction unit 100 performs the unevenness reduction process for reducing the display unevenness (the unevenness of at least one of the luminance and the color in the display image) on the image data I1. The parameters used in the image processing of the image correction unit 100 are adjusted based on the measurement result of the measurement unit 102, for example. The parameter may be adjusted by the image display device, may be adjusted by a device separate from the image display device, or may be adjusted by the user. The parameters are stored in a storage unit (not shown) included in the image display device (display control device), and the image correction unit 100 reads the parameters from the storage unit and uses the parameters.

  Note that the image processing performed by the image correction unit 100 is not limited to the unevenness reduction processing. For example, the image processing performed by the image correction unit 100 includes a brightness adjustment process for adjusting the brightness of the image, a color adjustment process for adjusting the color of the image, and a change that reduces a change in the display image due to a change in the display characteristics of the display unit 101. Reduction processing, etc., may be used.

  An example of the unevenness reduction processing will be described. Here, an example will be described in which a look-up table (LUT) indicating the correspondence between the gradation value before the unevenness reduction processing and the gradation value after the unevenness reduction processing is used as a parameter. The LUT is prepared for each of a plurality of areas in the screen. For each of the plurality of regions on the screen, the image data I1 corresponding to the region is corrected using the LUT corresponding to the region.

  FIG. 2 shows an example of an LUT used in the unevenness reduction processing. FIG. 2 shows an example in which both the image data I1 and the display image data I2 are RGB image data (image data whose pixel values are RGB values). FIG. 2 shows an example in which both the gradation value (R value, G value, and B value) of the image data I1 and the gradation value of the display image data I2 are 8-bit values (0 to 255). Show.

  Note that the pixel values of the image data I1 and the display image data I2 are not limited to the RGB image data. For example, the pixel values of the image data I1 and the display image data I2 may be YCbCr values. The number of bits of the image data I1 and the number of bits of the display image data I2 may be more or less than 8 bits. The format of the image data I1 may be different from the format of the display image data I2. For example, the pixel values of the image data I1 may be YCbCr values, and the pixel values of the display image data I2 may be RGB values. One bit number of the image data I1 and the display image data I2 may be larger than the other bit number of the image data I1 and the display image data I2.

  In the LUT of FIG. 2, the converted R value, the converted G value, and the converted B value are associated with the pre-conversion gradation values (R value, G value, and B value). The R value of the image data I1 is corrected to a converted R value associated with the same pre-conversion gradation value as the R value. The G value of the image data I1 is corrected to a converted G value associated with the same pre-conversion gradation value as the G value. Then, the B value of the image data I1 is corrected to a converted B value associated with the same pre-conversion gradation value as the B value. In the LUT of FIG. 2, the converted R value 240, the converted G value 241, and the converted B value 239 are associated with the pre-conversion gradation value 255. Therefore, a pixel value (R value, G value, B value) = (255, 255, 255) of the image data I1 is converted into a pixel value (240, 241, 239).

  The display unit 101 displays an image based on the display image data I2 on a screen. As the display unit 101, a liquid crystal display panel, an organic EL display panel, a plasma display panel, a MEMS (Micro Electro Mechanical System) shutter type display panel, or the like can be used. When the display control device according to the present embodiment is a device separate from the image display device, the display unit 101 is provided not in the display control device but in the image display device.

The measurement unit 102 measures light from the screen. For example, the measurement unit 102 measures the brightness of light, the color of light, or both. FIG. 3 is a diagram illustrating a state in which light from a screen is measured by the measurement unit 102. As shown in FIG. 3, the position of the measurement unit 102 can be changed. In the present embodiment, the position of the measuring unit 102 is changed by moving the measuring unit 102 by the user. In the present embodiment, the measurement unit 102 is a contact type measurement device.

  Note that the measurement unit 102 does not have to be a contact-type measurement device. The position of the measurement unit 102 may be changeable outside the screen. The measurement unit 102 may be a device separate from the image display device (display control device). The image display device (display control device) only needs to have the first acquisition function of acquiring the measurement value of the measurement unit 102.

The position detection unit 103 detects a measurement position that is a position in the screen at which the measurement value has been obtained by the measurement unit 102, and outputs position information indicating the detected measurement position as a detection result. In the present embodiment, a state where the measuring unit 102 is placed at a reference position (origin position) in the screen is used as an initial state of the measuring unit 102. FIG. 4 is a diagram showing how the initial state of the measurement unit 102 is realized. First, a predetermined graphic image (patch image 108) is displayed at the reference position. Next, when the user places the measuring unit 102 at the position of the patch image 108, the initial state of the measuring unit 102 is realized. Then, the position detection unit 103, the moving speed repeatedly detect the measurement unit 102, the initial state of the measurement unit 102, based on the moving speed of the measuring portion 102, the measurement position (e.g., the measurement position with respect to the reference position relative Value) is generated as position information.

  In the example of FIG. 4, the reference position is the center position of the screen, but the reference position is not limited to this. In the example of FIG. 4, the predetermined graphic image is a patch image, but the predetermined graphic image is not limited to a patch image. For example, an icon may be used as a predetermined graphic image. The method for detecting the measurement position is not particularly limited. The predetermined graphic image may be a fixed image predetermined by a manufacturer, may be an image that can be changed by a user, or may be an image corresponding to an operation mode, an installation environment of an image display device, or the like. There may be. Various existing technologies can be used for detecting the measurement position. For example, an existing technology used for a mouse or the like can be used. The position detection unit 103 may be capable of detecting a position outside the screen as the measurement position. The position detection unit 103 may be a device separate from the image display device (display control device). The image display device (display control device) only needs to have the second acquisition function of acquiring the above-described position information.

  The measurement determination unit 104 acquires a measurement value from the measurement unit 102 and acquires position information from the position detection unit 103. Then, the measurement determination unit 104 performs an accurate measurement (an accurate measurement by the measurement unit 102; an accurate measurement of light from the screen) at the measurement position indicated by the obtained position information based on the obtained measurement value. It is determined whether or not it has been performed. In the present embodiment, the measurement determination unit 104 makes the above determination based on the measured value and a predetermined threshold. The predetermined threshold may be a fixed value predetermined by a manufacturer, a value that can be changed by a user, a value according to an operation mode, an installation environment of an image display device, or the like. It may be.

  A specific example of the process of the measurement determination unit 104 will be described. Here, it is assumed that a predetermined display is performed on the entire screen. Specifically, it is assumed that the display according to the white pixel value is performed on the entire screen as shown in FIG.

First, the measurement determination unit 104 determines a lower threshold ThA and an upper threshold ThB based on a measured value (first measured value) at a predetermined position in the screen and a predetermined threshold Th. Although the predetermined position is not particularly limited, in the present embodiment, it is assumed that the predetermined position is the center position of the screen. The predetermined position may be a fixed position predetermined by a manufacturer, a position that can be changed by a user, or a position according to an operation mode, an installation environment of an image display device, or the like. You may. In the present embodiment, a value obtained by subtracting a predetermined threshold Th from the first measurement value is determined as the lower threshold ThA as in the following Expression 1-1. Then, a value obtained by adding a predetermined threshold Th to the first measured value is determined as the upper limit threshold ThB as in the following Expression 1-2.

Lower threshold value ThA = measured value of center position−threshold value (Equation 1-1)
Upper threshold value ThB = measured value of center position + threshold value (Equation 1-2)

  Then, when the acquired measured value is larger than the lower threshold ThA and the measured value is smaller than the upper threshold ThB, the measurement determination unit 104 performs accurate measurement for the measurement position indicated by the acquired position information. It is determined that the operation has been performed. On the other hand, the measurement determination unit 104 performs an accurate measurement for the measurement position indicated by the acquired position information when the acquired measurement value is equal to or less than the lower threshold and when the measurement is equal to or greater than the upper threshold. Judge that it was not done. Inaccurate measurement is caused, for example, by the measurement unit 102 moving away from the screen.

  Note that the method of acquiring the first measurement value is not particularly limited. For example, when the predetermined position is a reference position and a predetermined display is performed at the reference position when the initial state of the measuring unit 102 is realized, the measured value obtained at the time of realizing the initial state of the measuring unit 102 is used. , As the first measurement. Further, the predetermined display is not limited to the display corresponding to the white pixel value. For example, the predetermined display may be a display according to a predetermined pixel value different from a white pixel value. The predetermined display may be a display corresponding to a pixel value having at least one of a predetermined luminance and a predetermined color. The predetermined display may be a display in which a plurality of pixel values are sequentially switched.

  Note that the method for determining the measurement is not particularly limited. The above method (method using the threshold values ThA and ThB obtained by Equations 1-1 and 1-2) is suitable for a case where unevenness reduction processing for reducing display unevenness is performed so as to approach display at a predetermined position. Available to Instead of the threshold Th, thresholds ThA and ThB may be predetermined. The threshold does not have to be used for determining the measurement. Various existing technologies can be used for the determination of the measurement.

  The image switching unit 105 acquires the measurement determination result from the measurement determination unit 104. The determination result is, for example, information obtained by adding information indicating whether accurate measurement has been performed to the position information generated by the position detection unit 103. Then, the image switching unit 105 performs display control for changing the display of the measurement position in response to the determination that accurate measurement has been performed for the measurement position. Specifically, the image switching unit 105 generates the image data I1, and outputs the generated image data I1. The image switching unit 105 updates the image data I1 by changing the pixel value of the image data I1 corresponding to the measurement position in response to the determination that the accurate measurement has been performed at the measurement position. . Thereby, the display control is realized.

  The display after the change is not particularly limited. For example, the display after the change is a display according to at least one pixel value of a luminance different from the luminance before the change and a color different from the color before the change. The image switching unit 105 may be able to output arbitrary image data as the image data I1. The arbitrary image data is, for example, image data input to an image display device (display control device).

An example of the processing flow of the image display device according to the present embodiment will be described with reference to the flowchart in FIG. In the following, for the sake of simplicity, the predetermined position and the reference position are the center position of the screen, the predetermined display is a display corresponding to the white pixel value, and the predetermined position is excluded from the entire screen area. It is assumed that the area is a measurement area. The measurement region is a measurement target of the measurement unit 102. In the following, for the sake of simplicity, the display after the change by the above-described display control is a predetermined display (display in accordance with a white pixel value), and the display after the change by the display control is a black pixel value. It is assumed that the display is appropriate. Furthermore, in the following, the measurement value of the measurement unit 102 is luminance (cd / ^{m 2),} a predetermined threshold value Th is to be 50 cd / ^{m 2.} The display before the change is not limited to the predetermined display. For example, the display before the change may be a display based on arbitrary image data.

  First, in S100, the image switching unit 105 performs display control to obtain a predetermined display as a display at a predetermined position in the screen. Specifically, the image switching unit 105 generates, as the image data I1, image data in which a white patch image is arranged at the center position of the image, and outputs the generated image data I1. Here, as long as the image values other than the pixel values of the white patch image are different from the white pixel values, the image values other than the pixel values of the white patch image may be any pixel values. In the present embodiment, black pixel values are used as image values other than the pixel values of the white patch image.

  As a result of S100, a white patch image is displayed at the center position of the screen. Thus, the user can be prompted to move the measurement unit 102 to the position of the white patch image. In addition, as a result of S100, display according to the black pixel value is performed in an area other than the area where the patch image is displayed. After the measurement unit 102 is placed at the position of the white patch image, the process proceeds to S101. The method of determining whether or not the measurement unit 102 has been placed at the position of the white patch image is not particularly limited. For example, after a predetermined time (5 seconds, 10 seconds, 15 seconds, etc.) has elapsed, it may be determined that the measurement unit 102 has been placed at the position of the white patch image, and the process may proceed to S101.

In S101, the measurement unit 102 obtains a measurement value (measurement value of a white patch image; first measurement value) MA at the center position of the screen. Here, it is assumed that 500 cd / m ² is obtained as the measured value MA.

  Next, in S102, the image switching unit 105 performs display control for changing the display at the predetermined position and obtaining the predetermined display as the display in the measurement area (the area excluding the predetermined position from the entire screen). Do. Specifically, the image switching unit 105 updates the image data I1 such that the pixel values of the patch image are changed to black pixel values, and the remaining pixel values are changed to white pixel values. As a result, the display corresponding to the black pixel value is performed at the center position of the screen, and the display corresponding to the white pixel value is performed at the remaining positions.

  Then, in S103, the measurement unit 102 obtains a measurement value (second measurement value) MB at a measurement position that is a position in the measurement region. Further, the position detection unit 103 detects the measurement position.

Next, in S104, the measurement determination unit 104 accurately measures the measurement value MB (measurement for acquiring the measurement value MB) based on the predetermined threshold value Th, the measurement value MA, and the measurement value MB. Is determined. Specifically, it is determined whether the following expression 2 is satisfied. When Expression 2 is satisfied, it is determined that the measurement of the measurement value MB has been accurately performed, and the process proceeds to S105. If Expression 2 is not satisfied, it is determined that the measurement of the measurement value MB has not been accurately performed, and the process returns to S103.

Measured value MA−threshold Th <measured value MB <measured value MA + threshold Th (2)

FIG. 6 is a diagram illustrating a state in which light from the screen is measured by the measurement unit 102. In the example of FIG. 6, the user moves the measurement unit 102 to the left after the measurement at the center position of the screen is performed. For example, in S103, the measurement value in the state on the right side of FIG. 6 (the measurement value for the position on the left side of the center position of the screen; the measurement value for white) is obtained as the measurement value MB. In the present embodiment, the measurement value MA is 500 cd / ^{m 2,} the threshold Th is 50 cd / ^{m 2.} Therefore, in S104, if 450 cd / ^m greater than ² and smaller measured value MB than 550 cd / ^{m 2} was obtained, the measurement of the measured value MB is determined to have been performed correctly. For example, when the measured value MB is 490 cd / m ^2, it is determined that the measured value MB has been accurately measured. Then, when the measured value MB is equal to or less than 450 cd / m ² and when the measured value MB is equal to or more than 550 cd / m ^2, it is determined that the measurement of the measured value MB has not been accurately performed. For example, when the measured value MB is 400 cd / m ^2, it is determined that the measurement of the measured value MB was not performed accurately.

  In S105, the image switching unit 105 updates the image data I1 so as to display the measurement position of the measurement value MB according to the black pixel value. Specifically, the pixel value of the image data I1 corresponding to the measurement position of the measurement value MB is updated from a white pixel value to a black pixel value. The process of S105 is performed when it is determined that the measurement of the measurement value MB has been accurately performed. If it is determined that the measurement of the measurement value MB has not been accurately performed, the process returns from S104 to S103 without performing the process of S105. Therefore, when it is determined that the measurement of the measurement value MB has been accurately performed, the display of the measurement position of the measurement value MB is changed from the display corresponding to the white pixel value to the display corresponding to the black pixel value. . Then, when it is determined that the measurement of the measurement value MB has been accurately performed, the display of the measurement position of the measurement value MB is maintained as the display corresponding to the white pixel value.

  FIGS. 7A and 7B show an example of a display after determining whether or not the measurement of the measurement value MB has been accurately performed. 7 (A) and 7 (B) show the display after determining whether or not the measurement was correctly performed in the state on the right side of FIG. FIG. 7A shows a case where it is determined that the measurement has been performed accurately, and FIG. 7B shows a case where it has been determined that the measurement has not been performed accurately. In FIG. 7A, the display of the position where the measurement unit 102 is placed is changed from white display to black display because it is determined that the measurement has been accurately performed. By confirming that the display has been changed to the black display, the user can easily grasp that the measurement has been accurately performed. In FIG. 7B, since it was determined that the measurement was not performed accurately, the display of the position where the measurement unit 102 is placed is maintained as a white display. By confirming that the white display is maintained, the user can easily understand that the measurement is not performed accurately. As a result, the user can be prompted to move the measurement unit 102 to a position where the measurement is not accurately performed, and the user can efficiently measure each position on the screen.

  Next, in S106, it is determined whether the measurement by the measurement unit 102 has been completed. The process of S106 is performed by, for example, a determination unit (not shown) included in the image display device (display control device). If it is determined that the measurement has not been completed, the process returns to S103, and if it is determined that the measurement has been completed, this flowchart ends. The method of determining whether the measurement has been completed is not particularly limited. For example, when a measurement operation (a user operation for instructing execution of measurement) is performed during a reception period (a period from when the processing of S103 is performed until a predetermined time elapses), it is determined that the measurement is not completed. It may be determined. Then, when the measurement operation is not performed during the reception period, it may be determined that the measurement is completed. It may be determined that the measurement is not completed until the end operation (user operation for instructing the end of the measurement) is performed, and it may be determined that the measurement is completed if the end operation is performed. Until the pixel value of the entire measurement area is changed to a black pixel value, it is determined that the measurement has not been completed.If the pixel value of the entire measurement area has been changed to a black pixel value, the measurement has been completed. It may be determined.

As described above, according to the present embodiment, the display of the measurement position is changed according to the determination that the accurate measurement has been performed at the measurement position. Thereby, it is possible to easily make the user know whether or not the accurate measurement has been performed for the position in the screen, and to make the user efficiently perform the measurement for each position in the screen. it can.

  The specific configuration (processing) described above is merely an example, and a configuration obtained by appropriately modifying or changing the configuration described above within the scope of the present invention is also included in the present invention. .

  For example, a measurement for a given location may not be used to determine a measurement for another location. In that case, the processing of S100 and S101 in FIG. 5 may be omitted, and display control for obtaining a predetermined display as the display in the measurement area may be performed in S102. Further, the measurement area may include a predetermined position. The measurement area may be a partial area of the screen or an entire area of the screen (the entire area of the screen). The image display device (display control device) may further include a setting unit that sets a measurement area according to a user operation. When a long time is required for the measurement, a small area is preferably set as the measurement area. The processing of S103 to S105 may or may not be performed only when the measurement position is a position within the measurement area.

  The predetermined threshold value may be determined so as to change according to a change in the measurement position. For example, in an image display device, the tendency of display unevenness is often determined in advance. Therefore, the threshold value Th that changes in accordance with the change in the measurement position may be predetermined in consideration of the tendency of the display unevenness. Specifically, in the image display device, as a process for reducing the brightness unevenness of the display image, a process of increasing the brightness of another portion (peripheral portion) of the screen so as to approach the brightness of the central portion of the screen may be performed. Many. In this case, the aging of the peripheral portion progresses at a faster speed than the aging of the central portion, and the aging causes a luminance unevenness in which the luminance of the peripheral portion is lower than the luminance of the central portion.

  FIG. 8 shows an example of the display after aging described above. In the example of FIG. 8, luminance unevenness in which the luminance of the peripheral portion is lower than the luminance of the central portion is shown. If a value that does not depend on the measurement position is used as the threshold value Th, it is erroneously determined that the peripheral portion has not been measured accurately even though the peripheral portion has been accurately measured, and the measurement cannot be completed or the measurement cannot be completed. The number of times increases. Therefore, it is preferable that the threshold value Th be changed in accordance with the measurement position so that a threshold value larger than the threshold value used in the determination value of the central portion is used as the threshold value Th in the determination of the peripheral portion. Thereby, the measurement can be determined with higher accuracy. Specifically, the above-described erroneous determination can be suppressed, and the measurement cannot be completed and the number of measurements can be prevented from increasing.

<Other embodiments>
The present invention supplies a program for realizing one or more functions of the above-described embodiments to a system or an apparatus via a network or a storage medium, and one or more processors in a computer of the system or the apparatus read and execute the program. This processing can be realized. Further, it can also be realized by a circuit (for example, an ASIC) that realizes one or more functions.

  102: measurement unit 103: position detection unit 104: measurement determination unit 105: image switching unit

Claims (11)

A control device connected to a display unit and a measuring device that measures at least one of luminance and color of a part of an image displayed on the display unit,
Acquisition means for acquiring the position of the screen of the display means corresponding to the measurement position of the measuring instrument,
When the measurement value of at least one of the luminance and the color obtained from the measuring device satisfies a predetermined condition, a control unit that updates a display of the position of the display unit,
Equipped with a,
The control means includes:
A range corresponding to the measurement position based on a first measurement value for the second measurement position acquired by the measurement device in a state where a predetermined image is displayed at the second measurement position, and a threshold corresponding to the measurement position. And determine
When the second measurement value for the measurement position obtained by the measurement device while the predetermined image is displayed at the measurement position is included in the range, updating the display of the position on the display unit,
A control device characterized by the above-mentioned. The control device according to claim 1, wherein when the measured value does not satisfy the predetermined condition, the acquiring unit acquires the measured value again from the measuring device. The range from the first value obtained by subtracting the threshold from the measured values, according to claim 1 or 2, characterized in that a range included by a value obtained by adding the threshold value to the first measurement value Control device. The control device according to claim 3 , wherein the threshold value increases as the measurement position is farther from a center of a screen of the display unit. The control unit updates the display of the position of the display unit to a predetermined display indicating completion of the measurement when the measured value regarding at least one of the luminance and the color acquired from the measuring device satisfies the predetermined condition. The control device according to any one of claims 1 to 4 , wherein: Acquisition step of acquiring the position of the screen of the display means, which corresponds to the measurement position of the measuring device that measures at least one of the luminance and the color of a part of the image displayed on the display means,
A control step of updating a display of the position of the display means, when a measured value relating to at least one of the luminance and the color obtained from the measuring device satisfies a predetermined condition;
Have a,
In the control step,
A range corresponding to the measurement position based on a first measurement value for the second measurement position acquired by the measurement device in a state where a predetermined image is displayed at the second measurement position, and a threshold corresponding to the measurement position. And determine
When the second measurement value for the measurement position obtained by the measurement device while the predetermined image is displayed at the measurement position is included in the range, updating the display of the position on the display unit,
A control method characterized in that: The control method according to claim 6 , wherein when the measured value does not satisfy the predetermined condition, in the obtaining step, the measured value is obtained again from the measuring device. The said range is a range included from the value which subtracted the said threshold value from the said 1st measured value to the value which added the said threshold value to the said 1st measured value. The said Claim 6 or 7 characterized by the above-mentioned. Control method. The control method according to claim 8 , wherein the threshold value increases as the measurement position is farther from the center of the screen of the display unit. In the control step, when the measured value regarding at least one of the luminance and the color acquired from the measuring device satisfies the predetermined condition, the display of the position of the display unit is updated to a predetermined display indicating completion of the measurement. The control method according to any one of claims 6 to 9 , wherein A program for causing a computer to execute each step of the control method according to claim 6 .

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