WO2014057588A1 - Brightness calibrator, program, and brightness calibration method - Google Patents

Brightness calibrator, program, and brightness calibration method Download PDF

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Publication number
WO2014057588A1
WO2014057588A1 PCT/JP2012/076544 JP2012076544W WO2014057588A1 WO 2014057588 A1 WO2014057588 A1 WO 2014057588A1 JP 2012076544 W JP2012076544 W JP 2012076544W WO 2014057588 A1 WO2014057588 A1 WO 2014057588A1
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Prior art keywords
calibration
measurement target
luminance
luminance value
display screen
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PCT/JP2012/076544
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French (fr)
Japanese (ja)
Inventor
上田　真也
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Ｎｅｃディスプレイソリューションズ株式会社
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Priority to PCT/JP2012/076544 priority Critical patent/WO2014057588A1/en
Publication of WO2014057588A1 publication Critical patent/WO2014057588A1/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0693—Calibration of display systems
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen

Definitions

  • the present invention relates to a luminance calibration apparatus, a program, and a luminance calibration method.
  • calibration is performed (hereinafter referred to as “calibration”) by adjusting luminance and gradation collapse on the display screen of the display device using a luminance measuring device (hereinafter referred to as “external sensor”) that is not mounted on the display device.
  • external sensor a luminance measuring device
  • the calibration is started by placing an external sensor so that the user can measure the luminance of the measurement target area on the display screen and manually pressing the start button.
  • the present invention has been made in consideration of the above problems, and an object of the present invention is to provide a brightness calibration apparatus, a program, and a brightness calibration method for easily and accurately calibrating a display screen using an external sensor.
  • One embodiment of the present invention includes a display control unit that displays a measurement target image in a measurement target region on a display screen, a detection unit that detects a luminance value around the sensor from the sensor, and a luminance detected by the detection unit.
  • a calibration unit that starts calibration on the display screen based on the luminance value detected by the detection unit when the value is in a predetermined luminance value range.
  • One embodiment of the present invention includes a step of causing a computer to display a measurement target image in a measurement target region of a display screen, a step of detecting a luminance value around the sensor from the sensor, and the detected luminance value A step of starting calibration on the display screen based on the detected brightness value when the brightness value range is within a predetermined range;
  • One embodiment of the present invention is a brightness calibration method in a brightness calibration apparatus, wherein the brightness calibration apparatus displays a measurement target image in a measurement target area of a display screen; and the brightness calibration apparatus includes a sensor Detecting a luminance value around the sensor, and the luminance calibration device performs calibration on the display screen based on the detected luminance value when the detected luminance value is in a predetermined luminance value range.
  • calibration can be performed easily and accurately using an external sensor.
  • FIG. 1 is a block diagram showing a configuration of a luminance calibration system in the present embodiment.
  • the luminance calibration system includes a sensor 1, a luminance calibration device 2, and a display device 3.
  • the sensor 1 and the luminance calibration device 2 and the luminance calibration device 2 and the display device 3 are connected by a signal cable.
  • Sensor 1 is a luminance measuring device that measures luminance.
  • the sensor 1 is an external sensor that is not mounted on the display device 3, and is provided on or near the screen (display screen) of the display device 3 to measure luminance.
  • the sensor 1 transmits a luminance value obtained by measuring the luminance (hereinafter referred to as a measured luminance value) to the luminance calibration device 2.
  • the luminance calibration device 2 is a computer device that calibrates the display screen of the display device 3.
  • the luminance calibration device 2 always acquires the measured luminance value from the sensor 1.
  • the luminance calibration device 2 acquires information about the current luminance of the display screen (hereinafter referred to as luminance information) from the display device 3.
  • the luminance information includes a light emission luminance value that is a luminance value of the display screen of the display device 3.
  • the luminance calibration device 2 determines a predetermined luminance value range based on the luminance information acquired from the display device 3.
  • the luminance calibration device 2 transmits a calibration command for instructing execution of calibration to the display device 3.
  • the calibration command includes the light emission luminance value after calibration.
  • a well-known technique can be applied to the method of determining the display luminance value after calibration based on the measured luminance value. The detailed configuration of the luminance calibration device 2 will be described later.
  • the display device 3 is a display device having a display screen such as a liquid crystal display or an organic EL (Organic Electro-Luminescence) display.
  • a display screen such as a liquid crystal display or an organic EL (Organic Electro-Luminescence) display.
  • the display device 3 receives the calibration command from the luminance calibration device 2, the display device 3 calibrates the display screen based on the light emission luminance value included in the calibration command.
  • FIG. 2 is a block diagram showing a configuration of the luminance calibration apparatus 2 in the present embodiment.
  • the brightness calibration apparatus 2 includes a detection unit 201, a display control unit 202, an acquisition unit 203, and a calibration unit 204.
  • the detection unit 201 always obtains (detects) the measured luminance value from the sensor 1.
  • the display control unit 202 displays a measurement target image in a partial region (hereinafter referred to as a measurement target region) that is a measurement target on the display screen of the display device 3.
  • the acquisition unit 203 acquires the current luminance information on the display screen of the display device 3 from the display device 3.
  • the calibration unit 204 determines an arbitrary luminance value range based on the luminance information acquired by the acquisition unit 203. For example, the calibration unit 204 determines, as a luminance range, a range up to a value lower than the emission luminance value by a predetermined value based on the emission luminance value included in the luminance information acquired by the acquisition unit 203. .
  • the calibration unit 204 starts calibration on the display screen of the display device 3 based on the measured luminance value when the measured luminance value is included in the determined luminance value range. Specifically, the calibration unit 204 transmits a calibration command for instructing execution of calibration to the display device 3.
  • FIG. 3 is an image diagram illustrating an example of the measurement target image T displayed by the display control unit 202 according to the present embodiment.
  • the display control unit 202 displays the measurement target image T at the center of the display screen 301 that is the measurement target region.
  • the measurement target image T in this example is a white rectangular image.
  • the display control unit 202 displays all areas other than the measurement target area (hereinafter referred to as non-measurement target areas) in black.
  • the calibration unit 204 uses the emission luminance value included in the luminance information acquired by the acquisition unit 203 as a reference, and determines a range up to a value lower than the emission luminance value by a predetermined value as the luminance range.
  • the sensor 1 detects a value that is somewhat lower than the light emission luminance value acquired from the display device 3, it is possible to prevent calibration.
  • the measured luminance value is in the luminance value range only when the sensor 2 measures the measurement target area. include. Therefore, even if the sensor 1 is brought close to the black region (non-measurement target region), the calibration can be prevented from being performed. That is, the luminance calibration apparatus 2 performs calibration only when the sensor 1 measures the measurement target region.
  • FIG. 4 is a flowchart showing the procedure of the brightness calibration process according to the present embodiment.
  • the acquisition unit 203 acquires the current luminance information of the display screen 301 from the display device 3.
  • the calibration unit 204 determines a luminance value range based on the current luminance information acquired by the acquisition unit 203 (step S11).
  • the detection unit 201 acquires a measurement luminance value measured by the sensor 1 (step S12).
  • the display control unit 202 displays all non-measurement target areas on the display screen 301 in black and displays the measurement target area in white (step S13).
  • the calibration unit 204 determines whether or not the measured luminance value measured by the sensor 1 is included in the luminance value range determined in step S11 (step S14). When the measured luminance value is not included in the luminance value range (step S14: No), the calibration unit 204 returns to the process of step S14. On the other hand, when the measured luminance value is included in the luminance value range (step S14: Yes), the calibration unit 204 starts calibration (step S15) and ends the luminance calibration processing.
  • the brightness calibration device 2 includes the measured brightness value measured by the sensor 1 in the brightness value range determined based on the current brightness information on the display screen of the display device 3. Only start calibration. That is, the luminance calibration apparatus 2 starts calibration only when the sensor 1 is measuring the measurement target region. Thereby, it can prevent performing calibration when the sensor 1 is measuring the non-measurement object area
  • the configuration of the brightness calibration system in the present embodiment is the same as that in the first embodiment.
  • the difference between the present embodiment and the first embodiment is that there are a plurality of measurement target areas, and the brightness calibration apparatus 2 performs measurement in the next measurement target area after calibration in the first area is performed.
  • the target image is displayed and calibrated.
  • the display control unit 202 in the present embodiment displays the measurement target image T in the next measurement target region after calibration in the first region among the measurement target regions is performed.
  • the calibration unit 204 calibrates the measurement target area where the measurement target image T is displayed.
  • FIG. 5 is an image diagram showing a measurement target region in the present embodiment.
  • the luminance calibration device 2 divides the display screen 301 of the display device 3 into three areas in the vertical direction and three areas in the horizontal direction, and sets the divided areas A to I as measurement target areas.
  • FIG. 6 is an image diagram illustrating an example of the measurement target image T displayed by the display control unit 202 according to the present embodiment.
  • the display control unit 202 displays a white rectangular image as the measurement target image T in the measurement target region, and displays all the non-measurement target regions in black.
  • the nine measurement target areas in FIG. 6 correspond to the nine measurement target areas A to I in FIG.
  • the display control unit 202 displays the measurement target image T in the measurement target region A.
  • the display control unit 202 erases the measurement target image T displayed in the measurement target region A and performs measurement.
  • the measurement target image T is displayed in the target region B.
  • the display control unit 202 deletes the measurement target image T displayed in the measurement target region B and displays the measurement target image T in the measurement target region C.
  • the display control unit 202 deletes the measurement target image T displayed in the measurement target region C and displays the measurement target image T in the measurement target region D.
  • the display control unit 202 deletes the measurement target image T displayed in the measurement target area D and displays the measurement target image T in the measurement target area E.
  • the display control unit 202 deletes the measurement target image T displayed in the measurement target area E and displays the measurement target image T in the measurement target area F.
  • the display control unit 202 deletes the measurement target image T displayed in the measurement target area F and displays the measurement target image T in the measurement target area G.
  • the display control unit 202 deletes the measurement target image T displayed in the measurement target region G and displays the measurement target image T in the measurement target region H.
  • the display control unit 202 deletes the measurement target image T displayed in the measurement target region H and displays the measurement target image T in the measurement target region I.
  • the display control unit 202 erases the measurement target image T displayed in the measurement target region I. That is, the display control unit 202 displays the measurement target image T in the order of the measurement target areas A, B, C, D, E, F, G, H, and I.
  • calibration is performed in the order of the measurement target areas A, B, C, D, E, F, G, H, and I.
  • the calibration is not limited to this order, and all the measurement target areas are calibrated. Any order is possible if possible.
  • FIG. 7 is a flowchart showing the procedure of the brightness calibration process according to the present embodiment.
  • the acquisition unit 203 acquires the current luminance information of the display screen 301 from the display device 3.
  • the calibration unit 204 determines a luminance value range based on the current luminance information acquired by the acquisition unit 203 (step S21).
  • the detection unit 201 always acquires the measurement luminance value measured by the sensor 1 (step S22).
  • the display control unit 202 displays all non-measurement target areas on the display screen 301 in black and displays all measurement target areas in white (step S23).
  • the calibration unit 204 determines whether or not the measured luminance value measured by the sensor 1 is included in the luminance value range determined in step S21 (step S24). When the measured luminance value is not included in the luminance value range (step S24: No), the calibration unit 204 returns to the process of step S24. On the other hand, when the measurement luminance value is included in the luminance value range (step S24: Yes), the calibration unit 204 acquires the measurement luminance value from the sensor 1 and performs the current measurement (displaying the measurement target image T). Calibration of the target area is started (step S25).
  • the display control unit 202 changes the measurement target region (step S26). Specifically, the current measurement target area is displayed in black, and the next measurement target area is displayed in white. By changing the measurement target area, all the areas that have been measured until now become black, so that the measured luminance value deviates from an arbitrary luminance value range. As a result, the next measurement target region is definitely measured.
  • the calibration unit 204 determines whether all of the plurality of measurement target areas A to I have been calibrated (step S27). When all the measurement target areas A to I are not calibrated (step S27: No), the process returns to step S24. On the other hand, when all the measurement target areas A to I have been calibrated (step S27: Yes), the luminance calibration process ends. By repeating steps S24 to S26 described above, calibration can be performed so as to maintain the uniformity of the entire display screen 301 of the display device 3.
  • the brightness calibration apparatus 2 sets a plurality of measurement target areas, calibrates the first area, and then displays the measurement target image in the next measurement target area. And calibrate.
  • calibration can be performed so as to keep the luminance uniformity of the entire display screen 301.
  • the display device 3 is a multi-display system including a plurality of displays, luminance unevenness between the displays can be corrected.
  • the user has to manually press the start button every time the measurement target area is changed.
  • calibration is started when the measured luminance value is included in the luminance value range, so that the user does not have to manually press the start button every time the measurement target region is changed.
  • the “computer system” includes an OS and hardware such as peripheral devices.
  • the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
  • the “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM or a CD-ROM, and a hard disk incorporated in a computer system.
  • the “computer-readable recording medium” includes a medium that holds a program for a certain period of time, such as a volatile memory inside a computer system serving as a server or a client.
  • the program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system. Further, the above program may be stored in a predetermined server, and the program may be distributed (downloaded or the like) via a communication line in response to a request from another device.
  • the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.
  • the light emission luminance value is used as a reference, and a range up to a value lower than the light emission luminance value by a predetermined value is determined as the luminance range.
  • the method is not limited to this.
  • the calibration unit 204 determines a predetermined range as the luminance range using the light emission luminance value acquired from the display device 3 as a reference.
  • a value higher than the emission luminance value acquired from the display device 3 by a predetermined value is set as a first reference value, and a value lower than the emission luminance value acquired from the display device 3 by a predetermined value is set to a second value.
  • a reference value may be used, and a luminance range between the first reference value and the second reference value may be determined.
  • a display control unit that displays a measurement target image in a partial region to be measured on the display screen, a detection unit that detects a luminance value obtained from an external sensor, and a luminance value detected by the detection unit is a predetermined luminance value
  • a luminance calibration apparatus comprising: a calibration unit that starts calibration on the display screen based on the luminance value detected by the detection unit when within the range.
  • the display control unit displays a measurement target image in a partial region to be measured for each of a plurality of divided regions obtained by dividing the entire region of the display screen, and the calibration unit performs calibration for each of the plurality of divided regions.
  • a display control unit that displays a measurement target image in a partial area to be measured on the display screen, a detection unit that detects a luminance value obtained from an external sensor, and a luminance value detected by the detection unit is predetermined.
  • the display control unit displays the measurement target image in the partial area to be measured on the display screen, the detection unit detects the luminance value obtained from an external sensor, and the calibration unit detects the detected Starting a calibration on the display screen based on the detected luminance value when the luminance value is within a predetermined luminance value range.

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Abstract

This brightness calibration device (2) is provided with: a display control unit (202) for causing an image to be measured to be displayed in a partial region used for measurement on a display screen; a detection unit (201) for detecting a brightness value obtained from an external sensor (1); and a calibration unit (204) for starting calibration on the display screen on the basis of a brightness value detected by the detection unit (201) when the brightness value detected by the detection unit (201) is in a prescribed brightness value range.

Description

輝度校正装置、プログラムおよび輝度校正方法Luminance calibration apparatus, program, and luminance calibration method
　本発明は、輝度校正装置、プログラムおよび輝度校正方法に関する。 The present invention relates to a luminance calibration apparatus, a program, and a luminance calibration method.
　現在、表示装置に非搭載の輝度計測器（以下、外部センサという。）を用いて、表示装置の表示画面における輝度や階調の崩れを調整して校正（以下、キャリブレーションという。）するキャリブレーション方法がある（例えば、特許文献１参照）。このようなキャリブレーション方法では、ユーザが表示画面の測定対象の領域の輝度を測定できるように外部センサを置き、手動で開始ボタンを押すことによりキャリブレーションを開始していた。 Currently, calibration is performed (hereinafter referred to as “calibration”) by adjusting luminance and gradation collapse on the display screen of the display device using a luminance measuring device (hereinafter referred to as “external sensor”) that is not mounted on the display device. (For example, refer to Patent Document 1). In such a calibration method, the calibration is started by placing an external sensor so that the user can measure the luminance of the measurement target area on the display screen and manually pressing the start button.
特開２０１２－１２８２０６号公報JP 2012-128206 A
　しかしながら、従来のキャリブレーション方法では、手動でキャリブレーションを開始していたため、外部センサの設置位置がユーザ任せになっていた。外部センサの測定値は、外部センサと表示装置の表示画面との距離や角度等に影響される。このため、従来のキャリブレーション方法では、外部センサが測定対象の領域の輝度を測定できない位置に設置されていた場合であってもキャリブレーションが行われていた。このような場合、精度良く表示装置のキャリブレーションを行うことができない。
　本発明は、上記問題点を考慮してなされたものであり、外部センサを用いて、簡易に精度良く表示画面のキャリブレーションを行う、輝度校正装置、プログラムおよび輝度校正方法を提供することを目的とする。 However, in the conventional calibration method, since calibration was started manually, the installation position of the external sensor was left to the user. The measurement value of the external sensor is affected by the distance and angle between the external sensor and the display screen of the display device. For this reason, in the conventional calibration method, calibration is performed even when the external sensor is installed at a position where the luminance of the measurement target region cannot be measured. In such a case, the display device cannot be accurately calibrated.
The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a brightness calibration apparatus, a program, and a brightness calibration method for easily and accurately calibrating a display screen using an external sensor. And
　本発明の一態様は、表示画面の測定対象の領域に測定対象画像を表示させる表示制御部と、センサから、当該センサ周囲の輝度値を検出する検出部と、前記検出部により検出された輝度値が所定の輝度値範囲である場合に、前記検出部により検出された輝度値に基づいて前記表示画面におけるキャリブレーションを開始する校正部と、を備える。 One embodiment of the present invention includes a display control unit that displays a measurement target image in a measurement target region on a display screen, a detection unit that detects a luminance value around the sensor from the sensor, and a luminance detected by the detection unit. A calibration unit that starts calibration on the display screen based on the luminance value detected by the detection unit when the value is in a predetermined luminance value range.
　また、本発明の一態様は、コンピュータに、表示画面の測定対象の領域に測定対象画像を表示させるステップと、センサから、当該センサ周囲の輝度値を検出するステップと、前記検出した輝度値が所定の輝度値範囲である場合に、前記検出した輝度値に基づいて前記表示画面におけるキャリブレーションを開始するステップと、を実行させる。 One embodiment of the present invention includes a step of causing a computer to display a measurement target image in a measurement target region of a display screen, a step of detecting a luminance value around the sensor from the sensor, and the detected luminance value A step of starting calibration on the display screen based on the detected brightness value when the brightness value range is within a predetermined range;
　また、本発明の一態様は、輝度校正装置における輝度校正方法であって、前記輝度校正装置が、表示画面の測定対象の領域に測定対象画像を表示させるステップと、前記輝度校正装置が、センサから、当該センサ周囲の輝度値を検出するステップと、前記輝度校正装置が、前記検出した輝度値が所定の輝度値範囲である場合に、前記検出した輝度値に基づいて前記表示画面におけるキャリブレーションを開始するステップと、を有する。 One embodiment of the present invention is a brightness calibration method in a brightness calibration apparatus, wherein the brightness calibration apparatus displays a measurement target image in a measurement target area of a display screen; and the brightness calibration apparatus includes a sensor Detecting a luminance value around the sensor, and the luminance calibration device performs calibration on the display screen based on the detected luminance value when the detected luminance value is in a predetermined luminance value range. Starting.
　本発明によれば、外部センサを用いて、簡易に精度良くキャリブレーションを行うことができる。 According to the present invention, calibration can be performed easily and accurately using an external sensor.
本発明の第１の実施形態における輝度校正システムの構成を示すブロック図である。It is a block diagram which shows the structure of the brightness | luminance calibration system in the 1st Embodiment of this invention. 第１の実施形態における輝度校正装置の構成を示すブロック図である。It is a block diagram which shows the structure of the brightness | luminance calibration apparatus in 1st Embodiment. 第１の実施形態における表示制御部が表示する、測定対象画像の一例を示すイメージ図である。It is an image figure which shows an example of the measurement object image which the display control part in 1st Embodiment displays. 第１の実施形態による輝度校正処理の手順を示すフローチャートである。It is a flowchart which shows the procedure of the brightness calibration process by 1st Embodiment. 第２の実施形態における測定対象領域を示すイメージ図である。It is an image figure which shows the measurement object area | region in 2nd Embodiment. 第２の実施形態における表示制御部が表示する、測定対象画像の一例を示すイメージ図である。It is an image figure which shows an example of the measurement object image which the display control part in 2nd Embodiment displays. 第２の実施形態による輝度校正処理の手順を示すフローチャートである。It is a flowchart which shows the procedure of the brightness calibration process by 2nd Embodiment.
　（第１の実施形態）
　以下、本発明の第１の実施形態について、図面を参照しながら説明する。
　図１は、本実施形態における輝度校正システムの構成を示すブロック図である。輝度校正システムは、センサ１と、輝度校正装置２と、表示装置３とを含んで構成される。センサ１と輝度校正装置２、および、輝度校正装置２と表示装置３の間は信号ケーブルで接続されている。 (First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a luminance calibration system in the present embodiment. The luminance calibration system includes a sensor 1, a luminance calibration device 2, and a display device 3. The sensor 1 and the luminance calibration device 2 and the luminance calibration device 2 and the display device 3 are connected by a signal cable.
　センサ１は、輝度を測定する輝度測定器である。センサ１は、表示装置３に非搭載の外部センサであり、表示装置３の画面（表示画面）の面上または面付近に設けられて輝度を測定する。センサ１は、輝度の測定により得た輝度値（以下、測定輝度値という。）を輝度校正装置２に送信する。 Sensor 1 is a luminance measuring device that measures luminance. The sensor 1 is an external sensor that is not mounted on the display device 3, and is provided on or near the screen (display screen) of the display device 3 to measure luminance. The sensor 1 transmits a luminance value obtained by measuring the luminance (hereinafter referred to as a measured luminance value) to the luminance calibration device 2.
　輝度校正装置２は、表示装置３の表示画面のキャリブレーションを行うコンピュータ装置である。輝度校正装置２は、センサ１から常に測定輝度値を取得している。輝度校正装置２は、表示装置３から表示画面の現在の輝度に関する情報（以下、輝度情報という。）を取得する。輝度情報には、表示装置３の表示画面の輝度値である発光輝度値が含まれる。輝度校正装置２は、表示装置３から取得した輝度情報に基づいて所定の輝度値範囲を決定する。輝度校正装置２は、センサ１から取得した測定輝度値が決定した輝度値範囲に含まれる場合に、キャリブレーションの実行を命令する校正命令を表示装置３に送信する。校正命令には、校正後の発光輝度値が含まれる。測定輝度値に基づいて校正後の表示輝度値を決定する方法は、周知技術を適用することができる。輝度校正装置２の詳細な構成は後述する。 The luminance calibration device 2 is a computer device that calibrates the display screen of the display device 3. The luminance calibration device 2 always acquires the measured luminance value from the sensor 1. The luminance calibration device 2 acquires information about the current luminance of the display screen (hereinafter referred to as luminance information) from the display device 3. The luminance information includes a light emission luminance value that is a luminance value of the display screen of the display device 3. The luminance calibration device 2 determines a predetermined luminance value range based on the luminance information acquired from the display device 3. When the measured luminance value acquired from the sensor 1 is included in the determined luminance value range, the luminance calibration device 2 transmits a calibration command for instructing execution of calibration to the display device 3. The calibration command includes the light emission luminance value after calibration. A well-known technique can be applied to the method of determining the display luminance value after calibration based on the measured luminance value. The detailed configuration of the luminance calibration device 2 will be described later.
　表示装置３は、液晶ディスプレイや有機ＥＬ（Ｏｒｇａｎｉｃ　Ｅｌｅｃｔｒｏ－Ｌｕｍｉｎｅｓｃｅｎｃｅ）ディスプレイ等の表示画面を有する表示装置である。表示装置３は、輝度校正装置２から校正命令を受信すると、校正命令に含まれる発光輝度値に基づいて表示画面のキャリブレーションを行う。 The display device 3 is a display device having a display screen such as a liquid crystal display or an organic EL (Organic Electro-Luminescence) display. When the display device 3 receives the calibration command from the luminance calibration device 2, the display device 3 calibrates the display screen based on the light emission luminance value included in the calibration command.
　図２は、本実施形態における輝度校正装置２の構成を示すブロック図である。
　輝度校正装置２は、検出部２０１と、表示制御部２０２と、取得部２０３と、校正部２０４とを含んで構成される。 FIG. 2 is a block diagram showing a configuration of the luminance calibration apparatus 2 in the present embodiment.
The brightness calibration apparatus 2 includes a detection unit 201, a display control unit 202, an acquisition unit 203, and a calibration unit 204.
　検出部２０１は、センサ１から測定輝度値を常に取得（検出）している。表示制御部２０２は、表示装置３の表示画面の測定対象となる部分領域（以下、測定対象領域という。）に測定対象画像を表示させる。取得部２０３は、表示装置３の表示画面の現在の輝度情報を表示装置３から取得する。校正部２０４は、取得部２０３が取得した輝度情報に基づいて任意の輝度値範囲を決定する。例えば、校正部２０４は、取得部２０３が取得した輝度情報に含まれる発光輝度値を基準とし、この発光輝度値よりも予め決められた値の分だけ低い値までの範囲を輝度範囲として決定する。校正部２０４は、測定輝度値が決定した輝度値範囲に含まれる場合に、測定輝度値に基づいて表示装置３の表示画面におけるキャリブレーションを開始する。具体的には、校正部２０４は、キャリブレーションの実行を命令する校正命令を表示装置３に送信する。 The detection unit 201 always obtains (detects) the measured luminance value from the sensor 1. The display control unit 202 displays a measurement target image in a partial region (hereinafter referred to as a measurement target region) that is a measurement target on the display screen of the display device 3. The acquisition unit 203 acquires the current luminance information on the display screen of the display device 3 from the display device 3. The calibration unit 204 determines an arbitrary luminance value range based on the luminance information acquired by the acquisition unit 203. For example, the calibration unit 204 determines, as a luminance range, a range up to a value lower than the emission luminance value by a predetermined value based on the emission luminance value included in the luminance information acquired by the acquisition unit 203. . The calibration unit 204 starts calibration on the display screen of the display device 3 based on the measured luminance value when the measured luminance value is included in the determined luminance value range. Specifically, the calibration unit 204 transmits a calibration command for instructing execution of calibration to the display device 3.
　図３は、本実施形態における表示制御部２０２が表示する、測定対象画像Ｔの一例を示すイメージ図である。
　本図に示すように、表示制御部２０２は、測定対象領域である表示画面３０１の中心部に、測定対象画像Ｔを表示する。本例における測定対象画像Ｔは、白色の矩形画像である。表示制御部２０２は、測定対象領域以外の領域（以下、非測定対象領域という。）は全て黒色で表示する。
　校正部２０４は、取得部２０３が取得した輝度情報に含まれる発光輝度値を基準とし、この発光輝度値よりも予め決められた値の分だけ低い値までの範囲を輝度範囲として決定する。これにより、表示装置３から取得した発光輝度値よりもある程度低い値がセンサ１により検出されても、キャリブレーションを行わないようにすることができる。特に、表示装置３の測定対象領域に白を表示し、非測定対象領域を黒で表示するようにしているので、センサ２が測定対象領域を測定した場合にのみ、測定輝度値が輝度値範囲に含まれる。よって、黒の領域（非測定対象領域）にセンサ１を近づけても、キャリブレーションを行わないようにすることができる。すなわち、輝度校正装置２は、センサ１が測定対象領域を測定した場合にのみ、キャリブレーションを行う。 FIG. 3 is an image diagram illustrating an example of the measurement target image T displayed by the display control unit 202 according to the present embodiment.
As shown in the figure, the display control unit 202 displays the measurement target image T at the center of the display screen 301 that is the measurement target region. The measurement target image T in this example is a white rectangular image. The display control unit 202 displays all areas other than the measurement target area (hereinafter referred to as non-measurement target areas) in black.
The calibration unit 204 uses the emission luminance value included in the luminance information acquired by the acquisition unit 203 as a reference, and determines a range up to a value lower than the emission luminance value by a predetermined value as the luminance range. Thereby, even if the sensor 1 detects a value that is somewhat lower than the light emission luminance value acquired from the display device 3, it is possible to prevent calibration. Particularly, since white is displayed in the measurement target area of the display device 3 and the non-measurement target area is displayed in black, the measured luminance value is in the luminance value range only when the sensor 2 measures the measurement target area. include. Therefore, even if the sensor 1 is brought close to the black region (non-measurement target region), the calibration can be prevented from being performed. That is, the luminance calibration apparatus 2 performs calibration only when the sensor 1 measures the measurement target region.
　次に、図４を参照して、輝度校正装置２による輝度校正処理について説明する。図４は、本実施形態による輝度校正処理の手順を示すフローチャートである。
　まず、取得部２０３が、表示装置３から表示画面３０１の現在の輝度情報を取得する。校正部２０４は、取得部２０３により取得された現在の輝度情報に基づいて、輝度値範囲を決定する（ステップＳ１１）。
　検出部２０１は、センサ１の測定する測定輝度値を取得する（ステップＳ１２）。
　表示制御部２０２は、表示画面３０１の非測定対象領域を全て黒色で表示し、測定対象領域を白色で表示する（ステップＳ１３）。
　校正部２０４は、センサ１の測定する測定輝度値が、ステップＳ１１において決定した輝度値範囲に含まれるか否かを判定する（ステップＳ１４）。校正部２０４は、測定輝度値が輝度値範囲に含まれない場合（ステップＳ１４：Ｎｏ）は、ステップＳ１４の処理へ戻る。
　一方、校正部２０４は、測定輝度値が輝度値範囲に含まれる場合（ステップＳ１４：Ｙｅｓ）は、キャリブレーションを開始し（ステップＳ１５）、本輝度校正処理を終了する。 Next, with reference to FIG. 4, the luminance calibration process by the luminance calibration apparatus 2 will be described. FIG. 4 is a flowchart showing the procedure of the brightness calibration process according to the present embodiment.
First, the acquisition unit 203 acquires the current luminance information of the display screen 301 from the display device 3. The calibration unit 204 determines a luminance value range based on the current luminance information acquired by the acquisition unit 203 (step S11).
The detection unit 201 acquires a measurement luminance value measured by the sensor 1 (step S12).
The display control unit 202 displays all non-measurement target areas on the display screen 301 in black and displays the measurement target area in white (step S13).
The calibration unit 204 determines whether or not the measured luminance value measured by the sensor 1 is included in the luminance value range determined in step S11 (step S14). When the measured luminance value is not included in the luminance value range (step S14: No), the calibration unit 204 returns to the process of step S14.
On the other hand, when the measured luminance value is included in the luminance value range (step S14: Yes), the calibration unit 204 starts calibration (step S15) and ends the luminance calibration processing.
　このように、本実施形態によれば、輝度校正装置２は、センサ１の測定する測定輝度値が、表示装置３の表示画面の現在の輝度情報に基づいて決定された輝度値範囲に含まれる場合にのみキャリブレーションを開始する。すなわち、輝度校正装置２は、センサ１が測定対象領域を測定している場合にのみキャリブレーションを開始する。これにより、センサ１が非測定対象領域を測定しているときにキャリブレーションを行うことを防ぐことができる。よって、センサ１と表示装置３との距離や角度等のユーザ任せになっていた測定輝度値に影響する要因を排除することが可能となり、簡易に精度良くキャリブレーションを行うことができる。 As described above, according to the present embodiment, the brightness calibration device 2 includes the measured brightness value measured by the sensor 1 in the brightness value range determined based on the current brightness information on the display screen of the display device 3. Only start calibration. That is, the luminance calibration apparatus 2 starts calibration only when the sensor 1 is measuring the measurement target region. Thereby, it can prevent performing calibration when the sensor 1 is measuring the non-measurement object area | region. Therefore, it is possible to eliminate factors that affect the measured luminance value, such as the distance and angle between the sensor 1 and the display device 3, and calibration can be performed easily and accurately.
（第２の実施形態）
　次に、本発明の第２の実施形態について説明する。本実施形態における輝度校正システムの構成は、第１の実施形態と同様である。本実施形態と第１の実施形態とで異なる点は、測定対象領域が複数箇所あり、輝度校正装置２は、そのうち第１の領域におけるキャリブレーションが行われた後、次の測定対象領域に測定対象画像を表示させ、キャリブレーションを行う点である。本実施形態における表示制御部２０２は、測定対象領域のうち第１の領域におけるキャリブレーションが行われた後、次の測定対象領域に測定対象画像Ｔを表示させる。校正部２０４は、測定対象画像Ｔが表示された測定対象領域のキャリブレーションを行う。 (Second Embodiment)
Next, a second embodiment of the present invention will be described. The configuration of the brightness calibration system in the present embodiment is the same as that in the first embodiment. The difference between the present embodiment and the first embodiment is that there are a plurality of measurement target areas, and the brightness calibration apparatus 2 performs measurement in the next measurement target area after calibration in the first area is performed. The target image is displayed and calibrated. The display control unit 202 in the present embodiment displays the measurement target image T in the next measurement target region after calibration in the first region among the measurement target regions is performed. The calibration unit 204 calibrates the measurement target area where the measurement target image T is displayed.
　図５は、本実施形態における測定対象領域を示すイメージ図である。
　輝度校正装置２は、表示装置３の表示画面３０１を垂直方向に３個、水平方向に３個の領域に分割し、分割した各領域Ａ～Ｉをそれぞれ測定対象領域とする。 FIG. 5 is an image diagram showing a measurement target region in the present embodiment.
The luminance calibration device 2 divides the display screen 301 of the display device 3 into three areas in the vertical direction and three areas in the horizontal direction, and sets the divided areas A to I as measurement target areas.
　図６は、本実施形態における表示制御部２０２が表示する、測定対象画像Ｔの一例を示すイメージ図である。
　表示制御部２０２は、測定対象領域に測定対象画像Ｔである白色の矩形画像を表示し、非測定対象領域を全て黒色で表示する。図６における９個の測定対象領域は、図５の９個の測定対象領域Ａ～Ｉに対応している。 FIG. 6 is an image diagram illustrating an example of the measurement target image T displayed by the display control unit 202 according to the present embodiment.
The display control unit 202 displays a white rectangular image as the measurement target image T in the measurement target region, and displays all the non-measurement target regions in black. The nine measurement target areas in FIG. 6 correspond to the nine measurement target areas A to I in FIG.
　表示制御部２０２は、測定対象領域Ａに測定対象画像Ｔを表示し、測定対象領域Ａのキャリブレーションが行われると、測定対象領域Ａに表示していた測定対象画像Ｔを消去するとともに、測定対象領域Ｂに測定対象画像Ｔを表示する。表示制御部２０２は、測定対象領域Ｂのキャリブレーションが行われると、測定対象領域Ｂに表示していた測定対象画像Ｔを消去するとともに、測定対象領域Ｃに測定対象画像Ｔを表示する。表示制御部２０２は、測定対象領域Ｃのキャリブレーションが行われると、測定対象領域Ｃに表示していた測定対象画像Ｔを消去するとともに、測定対象領域Ｄに測定対象画像Ｔを表示する。表示制御部２０２は、測定対象領域Ｄのキャリブレーションが行われると、測定対象領域Ｄに表示していた測定対象画像Ｔを消去するとともに、測定対象領域Ｅに測定対象画像Ｔを表示する。表示制御部２０２は、測定対象領域Ｅのキャリブレーションが行われると、測定対象領域Ｅに表示していた測定対象画像Ｔを消去するとともに、測定対象領域Ｆに測定対象画像Ｔを表示する。表示制御部２０２は、測定対象領域Ｆのキャリブレーションが行われると、測定対象領域Ｆに表示していた測定対象画像Ｔを消去するとともに、測定対象領域Ｇに測定対象画像Ｔを表示する。表示制御部２０２は、測定対象領域Ｇのキャリブレーションが行われると、測定対象領域Ｇに表示していた測定対象画像Ｔを消去するとともに、測定対象領域Ｈに測定対象画像Ｔを表示する。表示制御部２０２は、測定対象領域Ｈのキャリブレーションが行われると、測定対象領域Ｈに表示していた測定対象画像Ｔを消去するとともに、測定対象領域Ｉに測定対象画像Ｔを表示する。表示制御部２０２は、測定対象領域Ｉのキャリブレーションが行われると、測定対象領域Ｉに表示していた測定対象画像Ｔを消去する。すなわち、表示制御部２０２は、測定対象領域Ａ，Ｂ，Ｃ，Ｄ，Ｅ，Ｆ，Ｇ，Ｈ，Ｉの順に測定対象画像Ｔを表示する。 The display control unit 202 displays the measurement target image T in the measurement target region A. When the measurement target region A is calibrated, the display control unit 202 erases the measurement target image T displayed in the measurement target region A and performs measurement. The measurement target image T is displayed in the target region B. When calibration of the measurement target region B is performed, the display control unit 202 deletes the measurement target image T displayed in the measurement target region B and displays the measurement target image T in the measurement target region C. When calibration of the measurement target region C is performed, the display control unit 202 deletes the measurement target image T displayed in the measurement target region C and displays the measurement target image T in the measurement target region D. When the measurement target area D is calibrated, the display control unit 202 deletes the measurement target image T displayed in the measurement target area D and displays the measurement target image T in the measurement target area E. When the measurement target area E is calibrated, the display control unit 202 deletes the measurement target image T displayed in the measurement target area E and displays the measurement target image T in the measurement target area F. When the measurement target area F is calibrated, the display control unit 202 deletes the measurement target image T displayed in the measurement target area F and displays the measurement target image T in the measurement target area G. When the measurement target region G is calibrated, the display control unit 202 deletes the measurement target image T displayed in the measurement target region G and displays the measurement target image T in the measurement target region H. When the measurement target region H is calibrated, the display control unit 202 deletes the measurement target image T displayed in the measurement target region H and displays the measurement target image T in the measurement target region I. When the measurement target region I is calibrated, the display control unit 202 erases the measurement target image T displayed in the measurement target region I. That is, the display control unit 202 displays the measurement target image T in the order of the measurement target areas A, B, C, D, E, F, G, H, and I.
　なお、本実施形態では、測定対象領域Ａ，Ｂ，Ｃ，Ｄ，Ｅ，Ｆ，Ｇ，Ｈ，Ｉの順にキャリブレーションを行っているが、この順に限らず、全ての測定対象領域をキャリブレーションできればどのような順番であってもよい。 In this embodiment, calibration is performed in the order of the measurement target areas A, B, C, D, E, F, G, H, and I. However, the calibration is not limited to this order, and all the measurement target areas are calibrated. Any order is possible if possible.
　次に、図７を参照して、輝度校正装置２による輝度校正処理について説明する。図７は、本実施形態による輝度校正処理の手順を示すフローチャートである。
　まず、取得部２０３が、表示装置３から表示画面３０１の現在の輝度情報を取得する。校正部２０４は、取得部２０３により取得された現在の輝度情報に基づいて、輝度値範囲を決定する（ステップＳ２１）。
　検出部２０１は、センサ１の測定する測定輝度値を常に取得している（ステップＳ２２）。
　表示制御部２０２は、表示画面３０１の非測定対象領域を全て黒色で表示し、測定対象領域を全て白色で表示する（ステップＳ２３）。
　校正部２０４は、センサ１の測定する測定輝度値が、ステップＳ２１において決定した輝度値範囲に含まれるか否かを判定する（ステップＳ２４）。校正部２０４は、測定輝度値が輝度値範囲に含まれない場合（ステップＳ２４：Ｎｏ）は、ステップＳ２４の処理へ戻る。
　一方、校正部２０４は、測定輝度値が輝度値範囲に含まれる場合（ステップＳ２４：Ｙｅｓ）は、センサ１から測定輝度値を取得し、現在の（測定対象画像Ｔを表示している）測定対象領域のキャリブレーションを開始する（ステップＳ２５）。 Next, with reference to FIG. 7, the luminance calibration processing by the luminance calibration apparatus 2 will be described. FIG. 7 is a flowchart showing the procedure of the brightness calibration process according to the present embodiment.
First, the acquisition unit 203 acquires the current luminance information of the display screen 301 from the display device 3. The calibration unit 204 determines a luminance value range based on the current luminance information acquired by the acquisition unit 203 (step S21).
The detection unit 201 always acquires the measurement luminance value measured by the sensor 1 (step S22).
The display control unit 202 displays all non-measurement target areas on the display screen 301 in black and displays all measurement target areas in white (step S23).
The calibration unit 204 determines whether or not the measured luminance value measured by the sensor 1 is included in the luminance value range determined in step S21 (step S24). When the measured luminance value is not included in the luminance value range (step S24: No), the calibration unit 204 returns to the process of step S24.
On the other hand, when the measurement luminance value is included in the luminance value range (step S24: Yes), the calibration unit 204 acquires the measurement luminance value from the sensor 1 and performs the current measurement (displaying the measurement target image T). Calibration of the target area is started (step S25).
　続いて、表示制御部２０２は、測定対象領域を変更する（ステップＳ２６）。具体的には、現在の測定対象領域を全て黒色で表示するとともに、次の測定対象領域を全て白色で表示する。測定対象領域を変更することにより、今まで測定していた領域が全て黒色になるため、測定輝度値が任意の輝度値範囲から外れる。これにより、間違いなく次の測定対象領域を測定するようにする。
　校正部２０４は、複数ある測定対象領域Ａ～Ｉ全てをキャリブレーションしたか否かを判定する（ステップＳ２７）。全ての測定対象領域Ａ～Ｉをキャリブレーションしていない場合（ステップＳ２７：Ｎｏ）、ステップＳ２４へ戻る。一方、全ての測定対象領域Ａ～Ｉをキャリブレーションした場合（ステップＳ２７：Ｙｅｓ）、本輝度校正処理を終了する。
　上述したステップＳ２４～Ｓ２６を繰り返すことにより、表示装置３の表示画面３０１全体の均一性を保つようにキャリブレーションすることができる。 Subsequently, the display control unit 202 changes the measurement target region (step S26). Specifically, the current measurement target area is displayed in black, and the next measurement target area is displayed in white. By changing the measurement target area, all the areas that have been measured until now become black, so that the measured luminance value deviates from an arbitrary luminance value range. As a result, the next measurement target region is definitely measured.
The calibration unit 204 determines whether all of the plurality of measurement target areas A to I have been calibrated (step S27). When all the measurement target areas A to I are not calibrated (step S27: No), the process returns to step S24. On the other hand, when all the measurement target areas A to I have been calibrated (step S27: Yes), the luminance calibration process ends.
By repeating steps S24 to S26 described above, calibration can be performed so as to maintain the uniformity of the entire display screen 301 of the display device 3.
　このように、本実施形態によれば、輝度校正装置２は、測定対象領域を複数個所設定し、そのうち第１の領域のキャリブレーションを行った後、次の測定対象領域に測定対象画像を表示させ、キャリブレーションを行う。これにより、表示画面３０１全体の輝度の均一性を保つようにキャリブレーションを行うことができる。例えば、表示装置３が、複数のディスプレイから構成されるマルチディスプレイシステムである場合に、各ディスプレイ間における輝度むらを補正することができる。また、従来では、測定対象領域が複数ある場合、測定対象領域が変更される毎にユーザが手動で開始ボタンを押さなければならず手間になっていた。それに対し、本実施形態では、測定輝度値が輝度値範囲に含まれるとキャリブレーションを開始するため、測定対象領域が変更する毎にユーザが手動で開始ボタンを押す手間がなくなる。 As described above, according to the present embodiment, the brightness calibration apparatus 2 sets a plurality of measurement target areas, calibrates the first area, and then displays the measurement target image in the next measurement target area. And calibrate. As a result, calibration can be performed so as to keep the luminance uniformity of the entire display screen 301. For example, when the display device 3 is a multi-display system including a plurality of displays, luminance unevenness between the displays can be corrected. Conventionally, when there are a plurality of measurement target areas, the user has to manually press the start button every time the measurement target area is changed. On the other hand, in the present embodiment, calibration is started when the measured luminance value is included in the luminance value range, so that the user does not have to manually press the start button every time the measurement target region is changed.
　また、図２における輝度校正装置２の機能を実現するためのプログラムをコンピュータ読み取り可能な記録媒体に記録して、この記録媒体に記録されたプログラムをコンピュータシステムに読み込ませ、実行することにより輝度校正を行ってもよい。なお、ここでいう「コンピュータシステム」とは、ＯＳや周辺機器等のハードウェアを含むものとする。 2 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into the computer system and executed, thereby executing the luminance calibration. May be performed. Here, the “computer system” includes an OS and hardware such as peripheral devices.
　また、「コンピュータシステム」は、ＷＷＷシステムを利用している場合であれば、ホームページ提供環境（あるいは表示環境）も含むものとする。
　また、「コンピュータ読み取り可能な記録媒体」とは、フレキシブルディスク、光磁気ディスク、ＲＯＭ、ＣＤ－ＲＯＭ等の可搬媒体、コンピュータシステムに内蔵されるハードディスク等の記憶装置のことをいう。さらに「コンピュータ読み取り可能な記録媒体」とは、サーバやクライアントとなるコンピュータシステム内部の揮発性メモリのように、一定時間プログラムを保持しているものを含むものとする。また上記プログラムは、前述した機能の一部を実現するためのものであっても良く、さらに前述した機能をコンピュータシステムにすでに記録されているプログラムとの組み合わせで実現できるものであってもよい。また、上記のプログラムを所定のサーバに記憶させておき、他の装置からの要求に応じて、当該プログラムを、通信回線を介して配信（ダウンロード等）させるようにしてもよい。 Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM or a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” includes a medium that holds a program for a certain period of time, such as a volatile memory inside a computer system serving as a server or a client. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system. Further, the above program may be stored in a predetermined server, and the program may be distributed (downloaded or the like) via a communication line in response to a request from another device.
　以上、この発明の実施形態について図面を参照して詳述してきたが、具体的な構成はこの実施形態に限られるものではなく、この発明の要旨を逸脱しない範囲の設計等も含まれる。
　例えば、上述した実施形態では、発光輝度値を基準とし、この発光輝度値よりも予め決められた値の分だけ低い値までの範囲を輝度範囲として決定しているが、任意の輝度範囲の決定方法はこれに限らない。例えば、校正部２０４は、表示装置３から取得した発光輝度値を基準とし、予め決められた範囲を輝度範囲として決定する。この輝度範囲としては、表示装置３から取得した発光輝度値よりも所定の値だけ高い値を第１基準値とし、表示装置３から取得した発光輝度値よりも所定の値だけ低い値を第２基準値とし、この第１基準値と第２基準値との間を輝度範囲として決定してもよい。これにより、表示装置３の発光輝度値よりも高い方、あるいは低い方に離れた値がセンサ１により検出されたとしても、キャリブレーションを行わないようにすることができる。 The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.
For example, in the above-described embodiment, the light emission luminance value is used as a reference, and a range up to a value lower than the light emission luminance value by a predetermined value is determined as the luminance range. The method is not limited to this. For example, the calibration unit 204 determines a predetermined range as the luminance range using the light emission luminance value acquired from the display device 3 as a reference. As this luminance range, a value higher than the emission luminance value acquired from the display device 3 by a predetermined value is set as a first reference value, and a value lower than the emission luminance value acquired from the display device 3 by a predetermined value is set to a second value. A reference value may be used, and a luminance range between the first reference value and the second reference value may be determined. Thereby, even if the sensor 1 detects a value that is higher or lower than the light emission luminance value of the display device 3, it is possible to prevent calibration.
　（付記１）
　表示画面の測定対象となる部分領域に測定対象画像を表示させる表示制御部と、外部のセンサから得られる輝度値を検出する検出部と、前記検出部により検出された輝度値が所定の輝度値範囲内にある場合に、前記検出部により検出された輝度値に基づいて前記表示画面におけるキャリブレーションを開始する校正部と、を備える輝度校正装置。 (Appendix 1)
A display control unit that displays a measurement target image in a partial region to be measured on the display screen, a detection unit that detects a luminance value obtained from an external sensor, and a luminance value detected by the detection unit is a predetermined luminance value A luminance calibration apparatus comprising: a calibration unit that starts calibration on the display screen based on the luminance value detected by the detection unit when within the range.
　（付記２）
　前記表示制御部は、前記表示画面の全体領域を分割した複数の分割領域それぞれの測定対象となる部分領域に測定対象画像を表示させ、前記校正部は、前記複数の分割領域それぞれについてキャリブレーションを行う、付記１に記載の輝度校正装置。 (Appendix 2)
The display control unit displays a measurement target image in a partial region to be measured for each of a plurality of divided regions obtained by dividing the entire region of the display screen, and the calibration unit performs calibration for each of the plurality of divided regions. The brightness calibration apparatus according to appendix 1, which is performed.
　（付記３）
　コンピュータを、表示画面の測定対象となる部分領域に測定対象画像を表示させる表示制御部と、外部のセンサから得られる輝度値を検出する検出部と、前記検出部により検出された輝度値が所定の輝度値範囲内にある場合に、前記検出部により検出された輝度値に基づいて前記表示画面におけるキャリブレーションを開始する校正部と、として機能させるためのプログラム。 (Appendix 3)
A display control unit that displays a measurement target image in a partial area to be measured on the display screen, a detection unit that detects a luminance value obtained from an external sensor, and a luminance value detected by the detection unit is predetermined. A program for causing a calibration unit to start calibration on the display screen based on the luminance value detected by the detection unit when the luminance value is within the luminance value range.
　（付記４）
　表示制御部が、表示画面の測定対象となる部分領域に測定対象画像を表示させるステップと、検出部が、外部のセンサから得られる輝度値を検出するステップと、校正部が、前記検出された輝度値が所定の輝度値範囲内にある場合に、前記検出された輝度値に基づいて前記表示画面におけるキャリブレーションを開始するステップと、を有する輝度校正方法。 (Appendix 4)
The display control unit displays the measurement target image in the partial area to be measured on the display screen, the detection unit detects the luminance value obtained from an external sensor, and the calibration unit detects the detected Starting a calibration on the display screen based on the detected luminance value when the luminance value is within a predetermined luminance value range.
　１　センサ
　２　輝度校正装置
　３　表示装置
　２０１　検出部
　２０２　表示制御部
　２０３　取得部
　２０４　校正部 DESCRIPTION OF SYMBOLS 1 Sensor 2 Luminance calibration apparatus 3 Display apparatus 201 Detection part 202 Display control part 203 Acquisition part 204 Calibration part

Claims (4)

  1. 　表示画面の測定対象となる部分領域に測定対象画像を表示させる表示制御部と、
    　外部のセンサから得られる輝度値を検出する検出部と、
    　前記検出部により検出された輝度値が所定の輝度値範囲内にある場合に、前記検出部により検出された輝度値に基づいて前記表示画面におけるキャリブレーションを開始する校正部と、
    　を備える輝度校正装置。     A display control unit for displaying a measurement target image in a partial area to be measured on the display screen;
    A detection unit for detecting a luminance value obtained from an external sensor;
    A calibration unit that starts calibration on the display screen based on the luminance value detected by the detection unit when the luminance value detected by the detection unit is within a predetermined luminance value range;
    A luminance calibration apparatus comprising:
  2. 　前記表示制御部は、前記表示画面の全体領域を分割した複数の分割領域それぞれの測定対象となる部分領域に測定対象画像を表示させ、
    　前記校正部は、前記複数の分割領域それぞれについてキャリブレーションを行う、
    　請求項１に記載の輝度校正装置。     The display control unit displays a measurement target image in a partial area to be measured in each of a plurality of divided areas obtained by dividing the entire area of the display screen;
    The calibration unit performs calibration for each of the plurality of divided regions.
    The brightness calibration apparatus according to claim 1.
  3. 　コンピュータを、
    　表示画面の測定対象となる部分領域に測定対象画像を表示させる表示制御部と、
    　外部のセンサから得られる輝度値を検出する検出部と、
    　前記検出部により検出された輝度値が所定の輝度値範囲内にある場合に、前記検出部により検出された輝度値に基づいて前記表示画面におけるキャリブレーションを開始する校正部と、
    　として機能させるためのプログラム。     Computer
    A display control unit for displaying a measurement target image in a partial area to be measured on the display screen;
    A detection unit for detecting a luminance value obtained from an external sensor;
    A calibration unit that starts calibration on the display screen based on the luminance value detected by the detection unit when the luminance value detected by the detection unit is within a predetermined luminance value range;
    Program to function as.
  4. 　表示制御部が、表示画面の測定対象となる部分領域に測定対象画像を表示させるステップと、
    　検出部が、外部のセンサから得られる輝度値を検出するステップと、
    　校正部が、前記検出された輝度値が所定の輝度値範囲内にある場合に、前記検出された輝度値に基づいて前記表示画面におけるキャリブレーションを開始するステップと、
    　を有する輝度校正方法。     A step of causing the display control unit to display a measurement target image in a partial area to be measured on the display screen;
    A detection unit detecting a luminance value obtained from an external sensor;
    A calibration unit starting calibration on the display screen based on the detected brightness value when the detected brightness value is within a predetermined brightness value range; and
    A luminance calibration method.
PCT/JP2012/076544 2012-10-12 2012-10-12 Brightness calibrator, program, and brightness calibration method WO2014057588A1 (en)

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