WO2023120240A1 - Display control device, program, and display control method - Google Patents

Display control device, program, and display control method Download PDF

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Publication number
WO2023120240A1
WO2023120240A1 PCT/JP2022/045460 JP2022045460W WO2023120240A1 WO 2023120240 A1 WO2023120240 A1 WO 2023120240A1 JP 2022045460 W JP2022045460 W JP 2022045460W WO 2023120240 A1 WO2023120240 A1 WO 2023120240A1
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Prior art keywords
display
unit
image
control unit
area
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PCT/JP2022/045460
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French (fr)
Japanese (ja)
Inventor
浩 竹下
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株式会社Ｊｖｃケンウッド
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Publication of WO2023120240A1 publication Critical patent/WO2023120240A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • 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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/14—Display of multiple viewports
    • 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
    • G09G5/22—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
    • 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
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • 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
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/37—Details of the operation on graphic patterns

Definitions

  • the present invention relates to a display control device, a program, and a display control method.
  • a bright window such as a text window may be opened while an image with many dark parts such as an image to be interpreted is being displayed.
  • the displayed brightness level is extremely high, and it may be difficult to see directly with the naked eye.
  • the technique disclosed in Patent Literature 1 is a technique for optimizing the color temperature of white for both a small area and a large area, and is not a technique that takes into account the glare of a user looking directly at the image. Also, when a bright text window is opened, lowering the overall brightness of the display may reduce the visibility of the image.
  • the present disclosure has been made in view of the above, and an object thereof is to provide a display control device, a program, and a display control method capable of suppressing deterioration in image visibility and adjusting the brightness of the window portion. do.
  • a display control device is a display control device to which an image signal is supplied from the outside, and receives the supplied image signal and displays it on a display unit.
  • a display control unit that controls to display a screen image;
  • a determination unit that determines whether a ratio of an area of a window portion in the screen image to an area of the screen image exceeds a threshold;
  • a brightness control section that controls a clip level of signal strength for displaying a white level in an image signal output from the display control section to the display section according to a determination result.
  • a program includes a display control step of controlling to display a screen image on a display unit, and determining whether the ratio of the area of the window portion in the screen image to the area of the screen image exceeds a threshold. and a luminance control step of controlling a clip level of a signal intensity for displaying a white level among image signals output to the display unit according to the determination result of the determination step, as a display control device.
  • a working computer does.
  • a display control method includes a display control step of controlling to display a screen image on a display unit; and a luminance control step of controlling a clip level of a signal strength for displaying a white level among image signals output to the display unit according to the determination result of the determination step.
  • FIG. 1 is a block diagram showing a configuration example of a display device having a display control device according to the first embodiment.
  • FIG. 2 is a flow chart showing an example of processing in the display control device according to the first embodiment.
  • FIG. 3 is a diagram for explaining an example of display on the display unit.
  • FIG. 4 is a diagram showing signal levels and gains of the image in FIG.
  • FIG. 5 is a diagram for explaining an example of display on the display unit.
  • FIG. 6 is a diagram showing signal levels and gains of the image in FIG.
  • FIG. 7 is a diagram for explaining another example of display on the display unit.
  • FIG. 8 is a diagram illustrating an example of display on the display unit.
  • FIG. 9 is a diagram showing signal levels and gains of the image in FIG.
  • FIG. 10 is a diagram for explaining another example of display on the display unit.
  • FIG. 1 is a block diagram showing a configuration example of a display device 10 having a control section 20 according to the first embodiment.
  • the display device 10 is a device that displays a screen image including a window image of a window portion that displays images, texts, and the like.
  • the window section will be described as an example of a text window section that displays text.
  • the display device 10 does not change the brightness of the image, but suppresses the brightness of the text window portion for display.
  • the display device 10 is, for example, a device that interprets an interpretation image such as an X-ray image or a mammography image.
  • the display device 10 may be, for example, a display device that displays an image such as a natural image. In this embodiment, an example will be described in which the display device 10 is an interpretation device and the image is an interpretation image.
  • the text window portion is input via a computer external to the display device 10.
  • the text window portion is a text window displayed on the display device 10 by an image signal of a text window image output from an external computer.
  • the display device 10 is externally supplied with an image signal for displaying a screen image.
  • An image signal is input to the display device 10 from, for example, an external computer connected by wire or wirelessly.
  • the display device 10 performs display based on an image signal input from the outside.
  • the text window part is a window in which text is displayed on a white or almost white background. In this case, since it is grayscale, it becomes achromatic. When an achromatic color is displayed with 8-bit gradation, there are 256 gradations from 0 to 255. A window in which all pixels are displayed at 255 levels, which is the maximum gradation, is called a window with a white background. The display at 255 levels is called a white level. A substantially white background is, for example, an area composed of pixels whose level is less than 255, such as 254, as a background.
  • the white level of the text window portion may be any level that is not included in an image such as an interpretation image or a natural image.
  • the text window portion is a window brighter than the interpretation image displayed on the same screen of the display portion 11 .
  • the text window portion can be displayed on the display unit 11 side by side with the image to be interpreted or partially overlapping the image to be interpreted.
  • the display device 10 has a display section 11 and a control section (display control device) 20 .
  • the display unit 11 is a device that displays various types of information.
  • the display unit 11 is a display including, for example, a liquid crystal display (LCD) or an organic EL (Electro-Luminescence) display.
  • the display unit 11 displays a screen image based on an image signal input to the display device 10 from the outside.
  • the display unit 11 displays a screen image based on the image signal output via the display control unit 24 of the control unit 20 .
  • the display unit 11 displays an interpretation image and a text window portion.
  • the display unit 11 does not change the brightness of the image to be interpreted, but suppresses the brightness of the text window portion for display.
  • the control unit 20 is, for example, an arithmetic processing device (control device) configured by a CPU (Central Processing Unit).
  • the control unit 20 loads a stored program into memory and executes instructions included in the program.
  • the control unit 20 includes an internal memory (not shown), which is used for temporary storage of data in the control unit 20 and the like.
  • the control unit 20 performs control so that the brightness of the image to be interpreted is not changed, and the brightness of the text window portion is suppressed and displayed.
  • the control unit 20 has an image signal acquisition unit 29 , a detection unit 21 , a determination unit 22 , a brightness control unit 23 and a display control unit 24 .
  • the image signal acquisition unit 29 acquires an image signal of a screen image to be displayed on the display unit 11 from outside the display device 10 .
  • the detection unit 21 detects the text window portion displayed on the display unit 11 . More specifically, the detection unit 21 detects pixels corresponding to the text window portion from the image signal of the screen image output to the display unit 11 , which is acquired by the image signal acquisition unit 29 . In this embodiment, the detection unit 21 detects pixels with a white level of 100% from the image signal of the screen image as pixels corresponding to the text window portion. This is because, as described above, the interpretation image does not include pixels with a white level of 100%, and the pixels with a white level of 100% included in the screen image are those of the text window image of the text window portion. For example, when the image signal has 8-bit gradation, the detection unit 21 detects pixels with a level of 255, which is a white level of 100%.
  • the detection unit 21 may include pixels close to white in the detection target.
  • the detection unit 21 may include and detect pixels whose level is less than 255, such as 254. For example, when a plurality of pixels detected in this way forms an area having a predetermined area or more, the detection unit 21 detects it as a text window area.
  • the determination unit 22 determines whether or not the text window has been opened. In other words, the determination section 22 determines whether or not the text window section is displayed on the display section 11 . More specifically, the determination unit 22 determines whether or not the ratio of the area of the text window portion in the screen image input via the external computer to the area of the display unit 11 exceeds a threshold. Then, the determination unit 22 determines whether the area of the text window displayed on the display unit 11 exceeds the threshold of the ratio to the area of the display unit 11, thereby determining whether the text window has been opened. judge. In the present embodiment, the determination unit 22 calculates the ratio of pixels with a white level of 100% detected by the detection unit 21 to all pixels of the display unit 11 . The determination unit 22 determines whether the calculated ratio exceeds the threshold.
  • the determination unit 22 determines, for example, whether the calculated ratio is 10% or more. If the determination unit 22 determines that the calculated ratio exceeds the threshold, it determines that the text window has been opened. If it is not determined that the calculated ratio exceeds the threshold, the determination unit 22 does not determine that the text window has been opened.
  • the determination unit 22 may determine whether or not the calculated ratio exceeds a stepwise set threshold. The determination unit 22 may determine whether or not the calculated ratio exceeds, for example, the first threshold. The determination unit 22 may determine whether or not the calculated ratio exceeds, for example, a second threshold that is larger than the first threshold. The determination unit 22 may determine, for example, whether the calculated ratio is 10% or more and less than 30%. The determination unit 22 may determine, for example, whether the calculated ratio is 30% or more.
  • the determination unit 22 determines whether or not the text window is closed after it is determined that the text window is open.
  • the determination unit 22 determines whether or not the text window section is closed, for example, by determining whether or not the calculated ratio is less than a threshold. In the present embodiment, the determination unit 22 determines whether or not the text window section has closed, for example, by determining whether or not the calculated ratio is less than 10%. If the determination unit 22 determines that the calculated ratio is less than the threshold, it determines that the text window unit is closed. If it is not determined that the calculated ratio is less than the threshold, the determination unit 22 does not determine that the text window is closed.
  • the luminance control unit 23 controls the clip level of the signal intensity for displaying the white level of the image signal output to the display unit 11 according to the determination result of the determination unit 22 .
  • the brightness control unit 23 controls to reduce the clip level of the signal intensity for displaying the white level among the image signals output to the display unit 11 .
  • the luminance control unit 23 lowers the clip level of the image signal with the white level of 100%.
  • the luminance control unit 23 does not change the clip level of image signals other than the white level of 100%.
  • the brightness control unit 23 may lower the clip level according to the ratio of pixels with a white level of 100% to all pixels of the display unit 11 .
  • the luminance control unit 23 may lower the clip level as the ratio of pixels with a white level of 100% increases. For example, when the ratio of pixels with a white level of 100% is 10% or more and less than 30%, the brightness control unit 23 reduces the clip level to the first level A1, and when it is 30% or more, the clip level is reduced to the first level. It is lowered to a second level A2 (A2 ⁇ A1) which is lower than the level.
  • the reason why the clip level is lowered as the ratio of pixels with a white level of 100% increases is that glare increases as the number of pixels with a white level of 100% increases. Therefore, the glare is reduced by lowering the clip level according to the ratio.
  • the brightness control unit 23 adjusts the brightness of pixels with a white level of 100% in the display unit 11.
  • the brightness control unit 23 resets the clip level of the image signal according to the determination result of the determination unit 22 . More specifically, when the determination unit 22 determines that the text window portion is closed, the brightness control unit 23 resets the clip level of the signal intensity for displaying the white level in the image signal output to the display unit 11 . Resetting the clip level of the image signal means returning to the initial image signal before clipping.
  • the display control unit 24 receives an image signal supplied from the outside of the display device 10 and controls the display unit 11 to display an interpretation image and a text window portion.
  • the display control unit 24 outputs an image signal that causes the display unit 11 to output an image to be interpreted.
  • the display control unit 24 displays the image signal based on the image signal in which the brightness control unit 23 reduces the clip level of the signal intensity for displaying the white level of the image signal. I do. As a result, the display control unit 24 maintains the brightness of the image to be interpreted and displays the brightness of the text window portion with reduced brightness.
  • the display control unit 24 causes the brightness control unit 23 to clip the signal intensity for displaying the white level of the image signal. Display is performed based on the image signal whose level has been reset.
  • FIG. 2 is a flowchart showing an example of processing in the control unit 20 according to the first embodiment. While the display device 10 is activated and the process of displaying the screen image on the display unit 11 is being performed, the process of the flowchart shown in FIG. 2 is performed.
  • the control unit 20 detects the window portion (step S101). More specifically, the control unit 20 causes the detection unit 21 to detect pixels corresponding to the window portion from the image signal output to the display unit 11 . The control unit 20 uses the detection unit 21 to detect pixels with a white level of 100% from the screen image displayed on the display unit 11 as pixels corresponding to the window portion. When a plurality of pixels with a white level of 100% detected by the detection unit 21 forms an area having a predetermined area or more, the control unit 20 detects it as a window area. The control unit 20 proceeds to step S102.
  • the control unit 20 determines whether or not the ratio of the area of the window portion is equal to or greater than the threshold (step S102). More specifically, the control unit 20 uses the determination unit 22 to calculate the ratio of pixels with a white level of 100% detected by the detection unit 21 to all pixels of the display unit 11 . The control unit 20 determines whether or not the window has been opened by determining whether or not the calculated ratio exceeds the threshold by the determination unit 22 . When the determination unit 22 determines that the ratio of the window area is equal to or greater than the threshold (Yes in step S102), the control unit 20 proceeds to step S103. If the determination unit 22 does not determine that the ratio of the window area is equal to or greater than the threshold (No in step S102), the control unit 20 proceeds to step S104.
  • the control unit 20 adjusts the brightness (step S103). More specifically, the control unit 20 causes the brightness control unit 23 to lower the clip level of the image signal with the white level of 100%. In this embodiment, the control unit 20 may reduce the clip level using the brightness control unit 23 according to the ratio of pixels with a white level of 100%. The control unit 20 proceeds to step S104.
  • the control unit 20 determines whether or not to end the process (step S104). More specifically, the control unit 20 ends the process when, for example, an operation to end the process of displaying the screen image is performed, the window is closed, or the power of the display device 10 is turned off. Then judge. When determining to end the process (Yes in step S104), the control unit 20 ends the process. At the end of processing, the clip level is reset. If the control unit 20 does not determine to end the process (No in step S104), it executes the process of step S101 again.
  • FIG. 3 is a diagram for explaining an example of display on the display unit 11.
  • FIG. 4 is a diagram showing signal levels and gains of the image in FIG.
  • the area of the window portion 101 is small.
  • the percentage of pixels with a white level of 100% is less than 10%. If the image signal output to the display unit 11 is for the display shown in FIG. 3, the determination in step S102 is No. Therefore, the signal intensity for displaying the white level of the image signal output to the display unit 11 is not clipped. Therefore, the brightness of the window portion 101 is not adjusted.
  • FIG. 5 is a diagram for explaining an example of display on the display unit 11.
  • FIG. 6 is a diagram showing signal levels and gains of the image in FIG.
  • FIG. 7 is a diagram for explaining another example of display on the display unit 11.
  • the area of the window portion 101 is wider than that in FIG.
  • the ratio of pixels with a white level of 100% is 10% or more and less than 30%. If the image signal output to the display unit 11 is for the display shown in FIG. 5, the determination in step S102 is Yes.
  • step S103 the luminance is adjusted, and the signal intensity for displaying the white level is clipped among the image signals output to the display unit 11.
  • FIG. 6 for example, the clip level of a pixel signal with a white level of 100% is lowered to the first level A1.
  • the display section 11 displays the window section 101 whose brightness is adjusted.
  • FIG. 8 is a diagram illustrating an example of display on the display unit 11.
  • FIG. 9 is a diagram showing signal levels and gains of the image in FIG.
  • FIG. 10 is a diagram illustrating another example of display on the display unit 11.
  • the area of the window portion 101 is larger than that in FIG.
  • the ratio of pixels with a white level of 100% is 30% or more. If the image signal output to the display unit 11 is for the display shown in FIG. 8, the determination in step S102 is Yes.
  • step S103 the luminance is adjusted, and the signal intensity for displaying the white level is clipped among the image signals output to the display unit 11.
  • FIG. 9 for example, the clip level of a pixel signal with a white level of 100% is lowered to the second level A2.
  • the display section 11 displays a window section 101 with adjusted brightness.
  • the brightness of the window portion 101 shown in FIG. 10 is adjusted so as to be darker than the window portion 101 shown in FIG.
  • the white image signal is output to the display unit 11 .
  • the brightness of the window portion can be controlled.
  • the present embodiment it is possible to reduce the brightness of the window portion in the same screen of the display unit 11 and keep the brightness of the interpreted image unchanged. According to the present embodiment, it is possible to reduce discomfort due to glare when another window such as a high-brightness window is opened while viewing an image to be interpreted. According to the present embodiment, it is possible to suppress a decrease in brightness of an image to be interpreted that is being viewed.
  • the ratio of the area of the window portion displayed on the display unit 11 to the area of the display unit 11 exceeds a threshold, the clip level of the white-side image signal is changed according to the ratio. Therefore, the peak brightness of the high brightness portion can be reduced. According to this embodiment, even if the ratio of the area of the window portion increases, it is possible to reduce the increase in glare.
  • a display device 10 including a control unit 20 according to this embodiment will be described.
  • the basic configuration of the display device 10 is the same as that of the display device 10 of the first embodiment.
  • components similar to those of the display device 10 are denoted by the same reference numerals or corresponding reference numerals, and detailed description thereof will be omitted.
  • the processing in the determination section 22 and the luminance control section 23 is different from that in the first embodiment.
  • the area of the window portion for displaying images, texts, etc. displayed on the display portion 11 is stored in advance in a storage portion (not shown).
  • the area of the window displayed on the display unit 11 is, for example, the same as the default area or the area of the previously displayed window.
  • the determination unit 22 determines that the window portion is displayed on the display unit 11 . More specifically, for example, assuming that the window portion is the text window portion, the determining portion 22 determines from the image signal output to the display portion 11 before the text window portion is displayed on the display portion 11. determines that the text window is displayed in
  • the brightness control unit 23 controls the brightness of the image signal output to the display unit 11 according to the preset area of the window portion. Controls the signal strength clip level that displays the white level.
  • the brightness control portion 23 opens the window portion while controlling the brightness to be appropriate according to the size of the window portion.
  • the window portion when the window portion is displayed on the display portion 11, the window portion can be opened while the brightness is controlled appropriately according to the size of the window portion. . According to the present embodiment, it is possible to suppress discomfort due to glare even for a short period of time when another window such as a high-brightness window is opened.
  • Each component of the illustrated display device is functionally conceptual and does not necessarily have to be physically configured as illustrated.
  • the specific form of each device is not limited to the illustrated one, and all or part of it may be functionally or physically distributed or integrated in arbitrary units according to the processing load and usage conditions of each device.
  • the configuration of the display device is implemented by, for example, a program loaded into the memory as software.
  • a program loaded into the memory as software.
  • functional blocks realized by cooperation of these hardware or software have been described. That is, these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof.
  • the display control device, program, and display control method of the present disclosure can be used, for example, in a device that interprets an image such as an X-ray image or a mammogram, or a display device that displays an image such as a natural image.
  • This disclosure includes matters that contribute to the realization of the SDGs (Sustainable Development Goals) "Good health and well-being for all” and contributes to the creation of value through healthcare products and services.

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Abstract

In the present invention, a control unit of a display control device comprises: a display control unit that implements control so as to display a radiogram interpretation image and a window part in a display unit; a determination unit rhat determines whether or not the ratio of the area of the window part displayed in the display unit to the area of a screen image exceeds a threshold; and a luminance control unit that, in accordance with the determination results from the determination unit, controls the clip level of the strength of a signal that, among image signals outputted to the display unit, displays a white level.

Description

表示制御装置、プログラムおよび表示制御方法Display control device, program and display control method
　本発明は、表示制御装置、プログラムおよび表示制御方法に関する。 The present invention relates to a display control device, a program, and a display control method.
　ＲＧＢ輝度信号を入力してカラー画像を表示部に表示する表示装置について、画像内の白の面積に応じて、白の色温度の補正を最適に行う技術が知られている（例えば、特許文献１参照）。 For a display device that receives RGB luminance signals and displays a color image on a display unit, there is known a technique for optimally correcting the color temperature of white according to the area of white in the image (see, for example, Patent Document 1).
特開２００７－３００１８４号公報JP 2007-300184 A
　例えば、読影装置などの表示装置において、読影画像のような暗い部分が多い画像を表示している状態で、例えば、テキストウィンドウのような明るいウィンドウを開くことがある。この場合、表示される輝度のレベルが極めて高くなり、肉眼では眩しく直視が困難になることがある。特許文献１に示す技術は、白の色温度を小面積でも大面積でも最適にする技術であり、直視しているユーザの眩しさを考慮する技術ではない。また、明るいテキストウィンドウが開いた場合、表示部の全体の輝度を下げると、画像の視認性が低下するおそれがある。 For example, in a display device such as an interpretation device, a bright window such as a text window may be opened while an image with many dark parts such as an image to be interpreted is being displayed. In this case, the displayed brightness level is extremely high, and it may be difficult to see directly with the naked eye. The technique disclosed in Patent Literature 1 is a technique for optimizing the color temperature of white for both a small area and a large area, and is not a technique that takes into account the glare of a user looking directly at the image. Also, when a bright text window is opened, lowering the overall brightness of the display may reduce the visibility of the image.
　本開示は、上記に鑑みてなされたものであり、画像の視認性低下を抑え、ウィンドウ部の明るさを調整することが可能な表示制御装置、プログラムおよび表示制御方法を提供することを目的とする。 The present disclosure has been made in view of the above, and an object thereof is to provide a display control device, a program, and a display control method capable of suppressing deterioration in image visibility and adjusting the brightness of the window portion. do.
　上述した課題を解決し、目的を達成するために、本開示に係る表示制御装置は、画像信号が外部から供給される表示制御装置であって、前記供給された画像信号を受けて表示部に画面画像を表示するよう制御する表示制御部と、前記画面画像の中のウィンドウ部の面積の、前記画面画像の面積に対する比率が閾値を超えたか否かを判定する判定部と、前記判定部の判定結果に応じて、前記表示制御部から前記表示部に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを制御する輝度制御部と、を備える。 In order to solve the above-described problems and achieve the object, a display control device according to the present disclosure is a display control device to which an image signal is supplied from the outside, and receives the supplied image signal and displays it on a display unit. a display control unit that controls to display a screen image; a determination unit that determines whether a ratio of an area of a window portion in the screen image to an area of the screen image exceeds a threshold; and a brightness control section that controls a clip level of signal strength for displaying a white level in an image signal output from the display control section to the display section according to a determination result.
　本開示に係るプログラムは、表示部に画面画像を表示するよう制御する表示制御ステップと、前記画面画像の中のウィンドウ部の面積の、前記画面画像の面積に対する比率が閾値を超えたか否かを判定する判定ステップと、前記判定ステップの判定結果に応じて、前記表示部に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを制御する輝度制御ステップと、を表示制御装置として動作するコンピュータが実行する。 A program according to the present disclosure includes a display control step of controlling to display a screen image on a display unit, and determining whether the ratio of the area of the window portion in the screen image to the area of the screen image exceeds a threshold. and a luminance control step of controlling a clip level of a signal intensity for displaying a white level among image signals output to the display unit according to the determination result of the determination step, as a display control device. A working computer does.
　本開示に係る表示制御方法は、表示部に画面画像を表示するよう制御する表示制御ステップと、前記画面画像の中のウィンドウ部の面積の、前記画面画像の面積に対する比率が閾値を超えたか否かを判定する判定ステップと、前記判定ステップの判定結果に応じて、前記表示部に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを制御する輝度制御ステップと、を含む。 A display control method according to the present disclosure includes a display control step of controlling to display a screen image on a display unit; and a luminance control step of controlling a clip level of a signal strength for displaying a white level among image signals output to the display unit according to the determination result of the determination step.
　本開示によれば、画像の視認性低下を抑え、ウィンドウ部の明るさを調整することができる。 According to the present disclosure, it is possible to suppress deterioration of image visibility and adjust the brightness of the window portion.
図１は、第一実施形態に係る表示制御装置を有する表示装置の構成例を示すブロック図である。FIG. 1 is a block diagram showing a configuration example of a display device having a display control device according to the first embodiment. 図２は、第一実施形態に係る表示制御装置における処理の一例を示すフローチャートである。FIG. 2 is a flow chart showing an example of processing in the display control device according to the first embodiment. 図３は、表示部の表示の一例を説明する図である。FIG. 3 is a diagram for explaining an example of display on the display unit. 図４は、図３における画像の信号レベルとゲインとを示す図である。FIG. 4 is a diagram showing signal levels and gains of the image in FIG. 図５は、表示部の表示の一例を説明する図である。FIG. 5 is a diagram for explaining an example of display on the display unit. 図６は、図７における画像の信号レベルとゲインとを示す図である。FIG. 6 is a diagram showing signal levels and gains of the image in FIG. 図７は、表示部の表示の他の例を説明する図である。FIG. 7 is a diagram for explaining another example of display on the display unit. 図８は、表示部の表示の一例を説明する図である。FIG. 8 is a diagram illustrating an example of display on the display unit. 図９は、図１０における画像の信号レベルとゲインとを示す図である。FIG. 9 is a diagram showing signal levels and gains of the image in FIG. 図１０は、表示部の表示の他の例を説明する図である。FIG. 10 is a diagram for explaining another example of display on the display unit.
　以下、本開示に係る表示制御装置、プログラムおよび表示制御方法の実施形態を図面に基づいて説明する。なお、以下の実施形態により本発明が限定されるものではない。 Hereinafter, embodiments of a display control device, a program, and a display control method according to the present disclosure will be described based on the drawings. In addition, the present invention is not limited by the following embodiments.
［第一実施形態］
（表示装置）
　図１は、第一実施形態に係る制御部２０を有する表示装置１０の構成例を示すブロック図である。表示装置１０は、画像やテキスト等を表示するウィンドウ部のウィンドウ画像を含む画面画像を表示する装置である。以後、分かりやすく説明するために、ウィンドウ部は、テキストを表示するテキストウィンドウ部である例として説明する。表示装置１０は、画像の明るさを変えず、テキストウィンドウ部の明るさを抑えて表示する。表示装置１０は、例えば、画像であるレントゲンまたはマンモグラフィーなどの読影画像を読影する装置である。表示装置１０は、例えば、自然画などの画像を表示する表示装置でもよい。本実施形態では、表示装置１０が読影装置であり、画像が読影画像である場合を例にして説明する。 [First embodiment]
(Display device)
FIG. 1 is a block diagram showing a configuration example of a display device 10 having a control section 20 according to the first embodiment. The display device 10 is a device that displays a screen image including a window image of a window portion that displays images, texts, and the like. In the following, for the sake of easy understanding, the window section will be described as an example of a text window section that displays text. The display device 10 does not change the brightness of the image, but suppresses the brightness of the text window portion for display. The display device 10 is, for example, a device that interprets an interpretation image such as an X-ray image or a mammography image. The display device 10 may be, for example, a display device that displays an image such as a natural image. In this embodiment, an example will be described in which the display device 10 is an interpretation device and the image is an interpretation image.
　テキストウィンドウ部は、表示装置１０の外部のコンピュータを介して入力される。テキストウィンドウ部は、外部のコンピュータから出力されるテキストウィンドウ画像の画像信号により、表示装置１０に表示されるテキストウィンドウである。 The text window portion is input via a computer external to the display device 10. The text window portion is a text window displayed on the display device 10 by an image signal of a text window image output from an external computer.
　表示装置１０は、画面画像の表示を行うための画像信号が外部から供給される。表示装置１０には、例えば、有線または無線で接続された外部のコンピュータから画像信号が入力される。表示装置１０は、外部から入力された画像信号に基づいて表示を行う。 The display device 10 is externally supplied with an image signal for displaying a screen image. An image signal is input to the display device 10 from, for example, an external computer connected by wire or wirelessly. The display device 10 performs display based on an image signal input from the outside.
　テキストウィンドウ部は、白地、または、ほぼ白地の背景にテキストが表示されるウィンドウである。この場合は、グレースケールなので、無彩色になる。無彩色を８ビットの階調で表示する場合、０～２５５の２５６階調となる。最大階調である２５５レベルで全画素が表示されたウィンドウを白地のウィンドウという。この２５５レベルでの表示を白レベルという。ほぼ白地とは、例えば、レベルが２５４など２５５未満の画素で構成された領域を背景とすることである。テキストウィンドウ部の白レベルは、読影画像または自然画などの画像に含まれないレベルであればよい。テキストウィンドウ部は、表示部１１の同一画面に表示されている読影画像より明るいウィンドウである。テキストウィンドウ部は、読影画像と並んで、または、読影画像と一部が重なった状態で表示部１１に表示可能である。 The text window part is a window in which text is displayed on a white or almost white background. In this case, since it is grayscale, it becomes achromatic. When an achromatic color is displayed with 8-bit gradation, there are 256 gradations from 0 to 255. A window in which all pixels are displayed at 255 levels, which is the maximum gradation, is called a window with a white background. The display at 255 levels is called a white level. A substantially white background is, for example, an area composed of pixels whose level is less than 255, such as 254, as a background. The white level of the text window portion may be any level that is not included in an image such as an interpretation image or a natural image. The text window portion is a window brighter than the interpretation image displayed on the same screen of the display portion 11 . The text window portion can be displayed on the display unit 11 side by side with the image to be interpreted or partially overlapping the image to be interpreted.
　表示装置１０は、表示部１１と、制御部（表示制御装置）２０とを有する。 The display device 10 has a display section 11 and a control section (display control device) 20 .
　表示部１１は、各種の情報を表示する装置である。表示部１１は、例えば、液晶ディスプレイ（ＬＣＤ：Ｌｉｑｕｉｄ　Ｃｒｙｓｔａｌ　Ｄｉｓｐｌａｙ）または有機ＥＬ（Ｅｌｅｃｔｒｏ－Ｌｕｍｉｎｅｓｃｅｎｃｅ）ディスプレイなどを含むディスプレイである。表示部１１は、外部から表示装置１０に入力された画像信号に基づいて画面画像を表示する。表示部１１は、制御部２０の表示制御部２４を介して出力された画像信号に基づいて、画面画像を表示する。本実施形態では、表示部１１は、読影画像およびテキストウィンドウ部を表示する。表示部１１は、読影画像の明るさを変えず、テキストウィンドウ部の明るさを抑えて表示する。 The display unit 11 is a device that displays various types of information. The display unit 11 is a display including, for example, a liquid crystal display (LCD) or an organic EL (Electro-Luminescence) display. The display unit 11 displays a screen image based on an image signal input to the display device 10 from the outside. The display unit 11 displays a screen image based on the image signal output via the display control unit 24 of the control unit 20 . In this embodiment, the display unit 11 displays an interpretation image and a text window portion. The display unit 11 does not change the brightness of the image to be interpreted, but suppresses the brightness of the text window portion for display.
　制御部２０は、例えば、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）などで構成された演算処理装置（制御装置）である。制御部２０は、記憶されているプログラムをメモリにロードして、プログラムに含まれる命令を実行する。制御部２０には図示しない内部メモリが含まれ、内部メモリは制御部２０におけるデータの一時記憶などに用いられる。制御部２０は、読影画像の明るさを変えず、テキストウィンドウ部の明るさを抑えて表示するよう制御する。制御部２０は、画像信号取得部２９と、検出部２１と、判定部２２と、輝度制御部２３と、表示制御部２４とを有する。 The control unit 20 is, for example, an arithmetic processing device (control device) configured by a CPU (Central Processing Unit). The control unit 20 loads a stored program into memory and executes instructions included in the program. The control unit 20 includes an internal memory (not shown), which is used for temporary storage of data in the control unit 20 and the like. The control unit 20 performs control so that the brightness of the image to be interpreted is not changed, and the brightness of the text window portion is suppressed and displayed. The control unit 20 has an image signal acquisition unit 29 , a detection unit 21 , a determination unit 22 , a brightness control unit 23 and a display control unit 24 .
　画像信号取得部２９は、表示装置１０の外部から表示部１１に表示させる画面画像の画像信号を取得する。 The image signal acquisition unit 29 acquires an image signal of a screen image to be displayed on the display unit 11 from outside the display device 10 .
　検出部２１は、表示部１１に表示されたテキストウィンドウ部を検出する。より詳しくは、検出部２１は、画像信号取得部２９によって取得された、表示部１１に出力される画面画像の画像信号からテキストウィンドウ部に対応する画素を検出する。本実施形態では、検出部２１は、テキストウィンドウ部に対応する画素として、画面画像の画像信号から白レベル１００％の画素を検出する。上述したように、読影画像には白レベル１００％の画素は含まれないので、画面画像に含まれる白レベル１００％の画素は、テキストウィンドウ部のテキストウィンドウ画像のものであるためである。検出部２１は、例えば、画像信号が８ビット階調である場合、白レベル１００％であるレベルが２５５の画素を検出する。検出部２１は、白に近い画素を検出対象に含めてもよい。検出部２１は、例えば、レベルが２５４など２５５未満の画素も含んで検出してもよい。検出部２１は、例えば、このようにして検出された複数の画素が所定の面積以上の領域を形成する場合、テキストウィンドウ部として検出する。 The detection unit 21 detects the text window portion displayed on the display unit 11 . More specifically, the detection unit 21 detects pixels corresponding to the text window portion from the image signal of the screen image output to the display unit 11 , which is acquired by the image signal acquisition unit 29 . In this embodiment, the detection unit 21 detects pixels with a white level of 100% from the image signal of the screen image as pixels corresponding to the text window portion. This is because, as described above, the interpretation image does not include pixels with a white level of 100%, and the pixels with a white level of 100% included in the screen image are those of the text window image of the text window portion. For example, when the image signal has 8-bit gradation, the detection unit 21 detects pixels with a level of 255, which is a white level of 100%. The detection unit 21 may include pixels close to white in the detection target. For example, the detection unit 21 may include and detect pixels whose level is less than 255, such as 254. For example, when a plurality of pixels detected in this way forms an area having a predetermined area or more, the detection unit 21 detects it as a text window area.
　判定部２２は、テキストウィンドウ部が開いたか否かを判定する。言い換えると、判定部２２は、テキストウィンドウ部が表示部１１に表示されたか否かを判定する。より詳しくは、判定部２２は、外部のコンピュータを介して入力された画面画像の中のテキストウィンドウ部の面積の、表示部１１の面積に対する比率が閾値を超えたか否かを判定する。そして、判定部２２は、表示部１１に表示されたテキストウィンドウ部の面積が、表示部１１の面積に対する比率の閾値を超えたか否かを判定することにより、テキストウィンドウ部が開いたか否かを判定する。本実施形態では、判定部２２は、表示部１１の全体の画素に対する、検出部２１によって検出された白レベル１００％の画素の比率を算出する。判定部２２は、算出した比率が閾値を超えたか否かを判定する。判定部２２は、例えば、算出した比率が１０％以上であるか否かを判定する。判定部２２は、算出した比率が閾値を超えたと判定する場合、テキストウィンドウ部が開いたと判定する。判定部２２は、算出した比率が閾値を超えたと判定されない場合、テキストウィンドウ部が開いたと判定しない。 The determination unit 22 determines whether or not the text window has been opened. In other words, the determination section 22 determines whether or not the text window section is displayed on the display section 11 . More specifically, the determination unit 22 determines whether or not the ratio of the area of the text window portion in the screen image input via the external computer to the area of the display unit 11 exceeds a threshold. Then, the determination unit 22 determines whether the area of the text window displayed on the display unit 11 exceeds the threshold of the ratio to the area of the display unit 11, thereby determining whether the text window has been opened. judge. In the present embodiment, the determination unit 22 calculates the ratio of pixels with a white level of 100% detected by the detection unit 21 to all pixels of the display unit 11 . The determination unit 22 determines whether the calculated ratio exceeds the threshold. The determination unit 22 determines, for example, whether the calculated ratio is 10% or more. If the determination unit 22 determines that the calculated ratio exceeds the threshold, it determines that the text window has been opened. If it is not determined that the calculated ratio exceeds the threshold, the determination unit 22 does not determine that the text window has been opened.
　判定部２２は、算出した比率が、段階的に設定された閾値を超えたか否かを判定してもよい。判定部２２は、算出した比率が、例えば、第一閾値を超えたか否かを判定してもよい。判定部２２は、算出した比率が、例えば、第一閾値より大きい第二閾値を超えたか否かを判定してもよい。判定部２２は、例えば、算出した比率が１０％以上３０％未満であるか否かを判定してもよい。判定部２２は、例えば、算出した比率が３０％以上であるか否かを判定してもよい。 The determination unit 22 may determine whether or not the calculated ratio exceeds a stepwise set threshold. The determination unit 22 may determine whether or not the calculated ratio exceeds, for example, the first threshold. The determination unit 22 may determine whether or not the calculated ratio exceeds, for example, a second threshold that is larger than the first threshold. The determination unit 22 may determine, for example, whether the calculated ratio is 10% or more and less than 30%. The determination unit 22 may determine, for example, whether the calculated ratio is 30% or more.
　判定部２２は、テキストウィンドウ部が開いたと判定された後、テキストウィンドウ部が閉じたか否かを判定する。判定部２２は、例えば、算出した比率が閾値未満であるか否かを判定することにより、テキストウィンドウ部が閉じたか否かを判定する。本実施形態では、判定部２２は、例えば、算出した比率が１０％未満であるか否かを判定することにより、テキストウィンドウ部が閉じたか否かを判定する。判定部２２は、算出した比率が閾値未満であると判定する場合、テキストウィンドウ部が閉じたと判定する。判定部２２は、算出した比率が閾値未満であると判定されない場合、テキストウィンドウ部が閉じたと判定しない。 The determination unit 22 determines whether or not the text window is closed after it is determined that the text window is open. The determination unit 22 determines whether or not the text window section is closed, for example, by determining whether or not the calculated ratio is less than a threshold. In the present embodiment, the determination unit 22 determines whether or not the text window section has closed, for example, by determining whether or not the calculated ratio is less than 10%. If the determination unit 22 determines that the calculated ratio is less than the threshold, it determines that the text window unit is closed. If it is not determined that the calculated ratio is less than the threshold, the determination unit 22 does not determine that the text window is closed.
　輝度制御部２３は、判定部２２の判定結果に応じて、表示部１１に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを制御する。輝度制御部２３は、判定部２２によってテキストウィンドウ部が開いたと判定した場合、表示部１１に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを低下させるよう制御する。本実施形態では、輝度制御部２３は、白レベル１００％の画像信号のクリップレベルを低下させる。本実施形態では、輝度制御部２３は、白レベル１００％以外の画像信号のクリップレベルは変更しない。 The luminance control unit 23 controls the clip level of the signal intensity for displaying the white level of the image signal output to the display unit 11 according to the determination result of the determination unit 22 . When the determination unit 22 determines that the text window portion is open, the brightness control unit 23 controls to reduce the clip level of the signal intensity for displaying the white level among the image signals output to the display unit 11 . In this embodiment, the luminance control unit 23 lowers the clip level of the image signal with the white level of 100%. In this embodiment, the luminance control unit 23 does not change the clip level of image signals other than the white level of 100%.
　本実施形態では、輝度制御部２３は、表示部１１の全体の画素に対する、白レベル１００％の画素の比率に応じて、クリップレベルを低下させてもよい。輝度制御部２３は、白レベル１００％の画素の比率が大きくなるほど、クリップレベルを低下させるようにしてもよい。輝度制御部２３は、例えば、白レベル１００％の画素の比率が１０％以上３０％未満である場合、クリップレベルを第一レベルＡ１まで低下させ、３０％以上である場合、クリップレベルを第一レベルより低い第二レベルＡ２（Ａ２＜Ａ１）まで低下させる。 In this embodiment, the brightness control unit 23 may lower the clip level according to the ratio of pixels with a white level of 100% to all pixels of the display unit 11 . The luminance control unit 23 may lower the clip level as the ratio of pixels with a white level of 100% increases. For example, when the ratio of pixels with a white level of 100% is 10% or more and less than 30%, the brightness control unit 23 reduces the clip level to the first level A1, and when it is 30% or more, the clip level is reduced to the first level. It is lowered to a second level A2 (A2<A1) which is lower than the level.
　白レベル１００％の画素の比率が大きくなるほど、クリップレベルを低下させるのは、白レベル１００％の画素が増えるほど、まぶしさが増大するためである。そこで、比率に応じてクリップレベルを低下させることにより、まぶしさを軽減する。 The reason why the clip level is lowered as the ratio of pixels with a white level of 100% increases is that glare increases as the number of pixels with a white level of 100% increases. Therefore, the glare is reduced by lowering the clip level according to the ratio.
　このようにして、輝度制御部２３は、表示部１１において白レベル１００％の画素の明るさを調整する。 In this way, the brightness control unit 23 adjusts the brightness of pixels with a white level of 100% in the display unit 11.
　輝度制御部２３は、判定部２２の判定結果に応じて、画像信号のクリップレベルをリセットする。より詳しくは、輝度制御部２３は、判定部２２によってテキストウィンドウ部が閉じたと判定した場合、表示部１１に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルをリセットする。画像信号のクリップレベルのリセットとは、クリップする前の初期の画像信号に戻すことである。 The brightness control unit 23 resets the clip level of the image signal according to the determination result of the determination unit 22 . More specifically, when the determination unit 22 determines that the text window portion is closed, the brightness control unit 23 resets the clip level of the signal intensity for displaying the white level in the image signal output to the display unit 11 . Resetting the clip level of the image signal means returning to the initial image signal before clipping.
　表示制御部２４は、表示装置１０の外部から供給された画像信号を受けて表示部１１に読影画像およびテキストウィンドウ部を表示するよう制御する。表示制御部２４は、読影画像を表示部１１に出力させる画像信号を出力する。 The display control unit 24 receives an image signal supplied from the outside of the display device 10 and controls the display unit 11 to display an interpretation image and a text window portion. The display control unit 24 outputs an image signal that causes the display unit 11 to output an image to be interpreted.
　表示制御部２４は、判定部２２によってテキストウィンドウ部が開いたと判定された場合、輝度制御部２３によって画像信号のうち白レベルを表示する信号強度のクリップレベルを低下させた画像信号に基づいて表示を行う。これにより、表示制御部２４は、読影画像の明るさはそのままに、テキストウィンドウ部の明るさを抑えた表示を行う。 When the determination unit 22 determines that the text window portion is open, the display control unit 24 displays the image signal based on the image signal in which the brightness control unit 23 reduces the clip level of the signal intensity for displaying the white level of the image signal. I do. As a result, the display control unit 24 maintains the brightness of the image to be interpreted and displays the brightness of the text window portion with reduced brightness.
　表示制御部２４は、判定部２２によってテキストウィンドウ部が開いたと判定された後、テキストウィンドウ部が閉じたと判定された場合、輝度制御部２３によって画像信号のうち白レベルを表示する信号強度のクリップレベルをリセットさせた画像信号に基づいて表示を行う。 When the determination unit 22 determines that the text window portion is open and then the text window portion is closed, the display control unit 24 causes the brightness control unit 23 to clip the signal intensity for displaying the white level of the image signal. Display is performed based on the image signal whose level has been reset.
（表示装置における処理）
　次に、図２を用いて、表示装置１０における処理について説明する。図２は、第一実施形態に係る制御部２０における処理の一例を示すフローチャートである。表示装置１０が起動されて、表示部１１に画面画像を表示される処理が行われている間、図２に示すフローチャートの処理が行われる。 (Processing in display device)
Next, processing in the display device 10 will be described with reference to FIG. FIG. 2 is a flowchart showing an example of processing in the control unit 20 according to the first embodiment. While the display device 10 is activated and the process of displaying the screen image on the display unit 11 is being performed, the process of the flowchart shown in FIG. 2 is performed.
　制御部２０は、ウィンドウ部を検出する（ステップＳ１０１）。より詳しくは、制御部２０は、検出部２１によって、表示部１１に出力される画像信号からウィンドウ部に対応する画素を検出する。制御部２０は、検出部２１によって、ウィンドウ部に対応する画素として、表示部１１に表示された画面画像から白レベル１００％の画素を検出する。制御部２０は、検出部２１によって、検出された複数の白レベル１００％の画素が所定の面積以上の領域を形成する場合、ウィンドウ部として検出する。制御部２０は、ステップＳ１０２へ進む。 The control unit 20 detects the window portion (step S101). More specifically, the control unit 20 causes the detection unit 21 to detect pixels corresponding to the window portion from the image signal output to the display unit 11 . The control unit 20 uses the detection unit 21 to detect pixels with a white level of 100% from the screen image displayed on the display unit 11 as pixels corresponding to the window portion. When a plurality of pixels with a white level of 100% detected by the detection unit 21 forms an area having a predetermined area or more, the control unit 20 detects it as a window area. The control unit 20 proceeds to step S102.
　制御部２０は、ウィンドウ部の面積の比率が閾値以上であるか否かを判定する（ステップＳ１０２）。より詳しくは、制御部２０は、判定部２２によって、表示部１１の全体の画素に対する、検出部２１によって検出された白レベル１００％の画素の比率を算出する。制御部２０は、判定部２２によって、算出した比率が閾値を超えたか否かを判定することにより、ウィンドウ部が開いたか否かを判定する。制御部２０は、判定部２２によって、ウィンドウ部の面積の比率が閾値以上であると判定する場合（ステップＳ１０２でＹｅｓ）、ステップＳ１０３へ進む。制御部２０は、判定部２２によって、ウィンドウ部の面積の比率が閾値以上であると判定しない場合（ステップＳ１０２でＮｏ）、ステップＳ１０４へ進む。 The control unit 20 determines whether or not the ratio of the area of the window portion is equal to or greater than the threshold (step S102). More specifically, the control unit 20 uses the determination unit 22 to calculate the ratio of pixels with a white level of 100% detected by the detection unit 21 to all pixels of the display unit 11 . The control unit 20 determines whether or not the window has been opened by determining whether or not the calculated ratio exceeds the threshold by the determination unit 22 . When the determination unit 22 determines that the ratio of the window area is equal to or greater than the threshold (Yes in step S102), the control unit 20 proceeds to step S103. If the determination unit 22 does not determine that the ratio of the window area is equal to or greater than the threshold (No in step S102), the control unit 20 proceeds to step S104.
　ウィンドウ部の面積の比率が閾値以上であると判定する場合（ステップＳ１０２でＹｅｓ）、制御部２０は、輝度を調整する（ステップＳ１０３）。より詳しくは、制御部２０は、輝度制御部２３によって、白レベル１００％の画像信号のクリップレベルを低下させる。本実施形態では、制御部２０は、輝度制御部２３によって、白レベル１００％の画素の比率に応じて、クリップレベルを低下させてもよい。制御部２０は、ステップＳ１０４へ進む。 When it is determined that the ratio of the area of the window portion is equal to or greater than the threshold (Yes in step S102), the control unit 20 adjusts the brightness (step S103). More specifically, the control unit 20 causes the brightness control unit 23 to lower the clip level of the image signal with the white level of 100%. In this embodiment, the control unit 20 may reduce the clip level using the brightness control unit 23 according to the ratio of pixels with a white level of 100%. The control unit 20 proceeds to step S104.
　制御部２０は、処理を終了するか否かを判定する（ステップＳ１０４）。より詳しくは、制御部２０は、例えば、画面画像を表示させる処理を終了する操作がされた場合、ウィンドウが閉じた場合、または、表示装置１０の電源がオフにされた場合などに処理を終了すると判定する。制御部２０は、処理を終了すると判定する場合（ステップＳ１０４でＹｅｓ）、処理を終了する。処理を終了する際には、クリップレベルをリセットする。制御部２０は、処理を終了すると判定しない場合（ステップＳ１０４でＮｏ）、ステップＳ１０１の処理を再度実行する。 The control unit 20 determines whether or not to end the process (step S104). More specifically, the control unit 20 ends the process when, for example, an operation to end the process of displaying the screen image is performed, the window is closed, or the power of the display device 10 is turned off. Then judge. When determining to end the process (Yes in step S104), the control unit 20 ends the process. At the end of processing, the clip level is reset. If the control unit 20 does not determine to end the process (No in step S104), it executes the process of step S101 again.
　図３、図４を用いて、図２に示すフローチャートの処理の一例を説明する。図３は、表示部１１の表示の一例を説明する図である。図４は、図３における画像の信号レベルとゲインとを示す図である。図３に示す例では、ウィンドウ部１０１の面積は狭い。図３に示す例では、白レベル１００％の画素の比率が１０％未満である。表示部１１に出力される画像信号が図３に示す表示をさせるものである場合、ステップＳ１０２でＮｏと判定される。このため、表示部１１に出力される画像信号のうち白レベルを表示する信号強度はクリップされない。したがって、ウィンドウ部１０１は、明るさが調整されない。 An example of the processing of the flowchart shown in FIG. 2 will be described using FIGS. FIG. 3 is a diagram for explaining an example of display on the display unit 11. As shown in FIG. FIG. 4 is a diagram showing signal levels and gains of the image in FIG. In the example shown in FIG. 3, the area of the window portion 101 is small. In the example shown in FIG. 3, the percentage of pixels with a white level of 100% is less than 10%. If the image signal output to the display unit 11 is for the display shown in FIG. 3, the determination in step S102 is No. Therefore, the signal intensity for displaying the white level of the image signal output to the display unit 11 is not clipped. Therefore, the brightness of the window portion 101 is not adjusted.
　図５ないし図７を用いて、図２に示すフローチャートの処理の他の例を説明する。図５は、表示部１１の表示の一例を説明する図である。図６は、図７における画像の信号レベルとゲインとを示す図である。図７は、表示部１１の表示の他の例を説明する図である。図５に示す例では、ウィンドウ部１０１の面積は図３より広い。図５に示す例では、白レベル１００％の画素の比率が１０％以上３０％未満である。表示部１１に出力される画像信号が図５に示す表示をさせるものである場合、ステップＳ１０２でＹｅｓと判定される。このため、ステップＳ１０３において、輝度が調整され、表示部１１に出力される画像信号のうち白レベルを表示する信号強度がクリップされる。図６に示すように、例えば、白レベル１００％の画素信号のクリップレベルを第一レベルＡ１まで低下させる。このようにして、図７に示すように、表示部１１には、明るさが調整されたウィンドウ部１０１が表示される。 Another example of the processing of the flowchart shown in FIG. 2 will be described using FIGS. FIG. 5 is a diagram for explaining an example of display on the display unit 11. As shown in FIG. FIG. 6 is a diagram showing signal levels and gains of the image in FIG. FIG. 7 is a diagram for explaining another example of display on the display unit 11. As shown in FIG. In the example shown in FIG. 5, the area of the window portion 101 is wider than that in FIG. In the example shown in FIG. 5, the ratio of pixels with a white level of 100% is 10% or more and less than 30%. If the image signal output to the display unit 11 is for the display shown in FIG. 5, the determination in step S102 is Yes. Therefore, in step S103, the luminance is adjusted, and the signal intensity for displaying the white level is clipped among the image signals output to the display unit 11. FIG. As shown in FIG. 6, for example, the clip level of a pixel signal with a white level of 100% is lowered to the first level A1. In this way, as shown in FIG. 7, the display section 11 displays the window section 101 whose brightness is adjusted.
　図８ないし図１０を用いて、図２に示すフローチャートの処理の他の例を説明する。図８は、表示部１１の表示の一例を説明する図である。図９は、図１０における画像の信号レベルとゲインとを示す図である。図１０は、表示部１１の表示の他の例を説明する図である。図８に示す例では、ウィンドウ部１０１の面積は図５より広い。図８に示す例では、白レベル１００％の画素の比率が３０％以上である。表示部１１に出力される画像信号が図８に示す表示をさせるものである場合、ステップＳ１０２でＹｅｓと判定される。このため、ステップＳ１０３において、輝度が調整され、表示部１１に出力される画像信号のうち白レベルを表示する信号強度がクリップされる。図９に示すように、例えば、白レベル１００％の画素信号のクリップレベルを第二レベルＡ２まで低下させる。このようにして、図１０に示すように、表示部１１には、明るさが調整されたウィンドウ部１０１が表示される。図１０に示すウィンドウ部１０１は、図７に示すウィンドウ部１０１より暗くなるように明るさが調整される。 Another example of the processing of the flowchart shown in FIG. 2 will be described using FIGS. FIG. 8 is a diagram illustrating an example of display on the display unit 11. As shown in FIG. FIG. 9 is a diagram showing signal levels and gains of the image in FIG. FIG. 10 is a diagram illustrating another example of display on the display unit 11. As shown in FIG. In the example shown in FIG. 8, the area of the window portion 101 is larger than that in FIG. In the example shown in FIG. 8, the ratio of pixels with a white level of 100% is 30% or more. If the image signal output to the display unit 11 is for the display shown in FIG. 8, the determination in step S102 is Yes. Therefore, in step S103, the luminance is adjusted, and the signal intensity for displaying the white level is clipped among the image signals output to the display unit 11. FIG. As shown in FIG. 9, for example, the clip level of a pixel signal with a white level of 100% is lowered to the second level A2. In this way, as shown in FIG. 10, the display section 11 displays a window section 101 with adjusted brightness. The brightness of the window portion 101 shown in FIG. 10 is adjusted so as to be darker than the window portion 101 shown in FIG.
（効果）
　上述したように、本実施形態は、表示部１１に表示されているウィンドウ部の面積の、表示部１１の面積に対する比率が閾値を超えた場合、表示部１１に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを制御することができる。本実施形態によれば、表示部１１にウィンドウ部が表示されたときに、ウィンドウ部の明るさを制御することができる。このように、本実施形態によれば、読影画像の視認性低下を抑え、ウィンドウ部の明るさを調整することができる。 (effect)
As described above, in the present embodiment, when the ratio of the area of the window portion displayed on the display unit 11 to the area of the display unit 11 exceeds the threshold, the white image signal is output to the display unit 11 . You can control the clip level of the signal strength displaying level. According to this embodiment, when the window portion is displayed on the display portion 11, the brightness of the window portion can be controlled. As described above, according to the present embodiment, it is possible to suppress deterioration in the visibility of an image to be interpreted and to adjust the brightness of the window portion.
　本実施形態によれば、表示部１１の同一画面内のウィンドウ部の輝度を下げるとともに、読影画像の輝度を変化させないようにすることができる。本実施形態によれば、読影画像を視認中に、輝度の高いウィンドウ部などの他のウィンドウを開いたときに、眩しさにより不快に感じることを低減できる。本実施形態によれば、視認中の読影画像の輝度低下を抑えることができる。 According to the present embodiment, it is possible to reduce the brightness of the window portion in the same screen of the display unit 11 and keep the brightness of the interpreted image unchanged. According to the present embodiment, it is possible to reduce discomfort due to glare when another window such as a high-brightness window is opened while viewing an image to be interpreted. According to the present embodiment, it is possible to suppress a decrease in brightness of an image to be interpreted that is being viewed.
　本実施形態は、表示部１１に表示されているウィンドウ部の面積の、表示部１１の面積に対する比率が閾値を超えた場合、その比率に応じて白側レベルの画像信号のクリップレベルを変えることにより、輝度の高い部分のピーク輝度を低減することができる。本実施形態によれば、ウィンドウ部の面積の比率が増えても、まぶしさが増大することを低減できる。 In this embodiment, when the ratio of the area of the window portion displayed on the display unit 11 to the area of the display unit 11 exceeds a threshold, the clip level of the white-side image signal is changed according to the ratio. Therefore, the peak brightness of the high brightness portion can be reduced. According to this embodiment, even if the ratio of the area of the window portion increases, it is possible to reduce the increase in glare.
［第二実施形態］
　本実施形態に係る制御部２０を含む表示装置１０について説明する。表示装置１０は、基本的な構成は第一実施形態の表示装置１０と同様である。以下の説明においては、表示装置１０と同様の構成要素には、同一の符号または対応する符号を付し、その詳細な説明は省略する。本実施形態では、判定部２２と輝度制御部２３とにおける処理が第一実施形態と異なる。 [Second embodiment]
A display device 10 including a control unit 20 according to this embodiment will be described. The basic configuration of the display device 10 is the same as that of the display device 10 of the first embodiment. In the following description, components similar to those of the display device 10 are denoted by the same reference numerals or corresponding reference numerals, and detailed description thereof will be omitted. In this embodiment, the processing in the determination section 22 and the luminance control section 23 is different from that in the first embodiment.
　本実施形態では、表示部１１に表示される画像やテキスト等を表示するウィンドウ部の面積は、あらかじめ図示しない記憶部に記憶されている。表示部１１に表示されるウィンドウ部の面積は、例えば、デフォルト設定の面積、または、前回表示されたウィンドウ部の面積と同じである。 In this embodiment, the area of the window portion for displaying images, texts, etc. displayed on the display portion 11 is stored in advance in a storage portion (not shown). The area of the window displayed on the display unit 11 is, for example, the same as the default area or the area of the previously displayed window.
　判定部２２は、表示部１１に、ウィンドウ部が表示されることを判定する。より詳しくは、例えば、ウィンドウ部はテキストウィンドウ部であるとして、判定部２２は、表示部１１に出力される画像信号から、表示部１１にテキストウィンドウ部が表示される前に、これから表示部１１にテキストウィンドウ部が表示されることを判定する。 The determination unit 22 determines that the window portion is displayed on the display unit 11 . More specifically, for example, assuming that the window portion is the text window portion, the determining portion 22 determines from the image signal output to the display portion 11 before the text window portion is displayed on the display portion 11. determines that the text window is displayed in
　輝度制御部２３は、判定部２２によって表示部１１にウィンドウ部が表示されると判定されるときに、あらかじめ設定されたウィンドウ部の面積に応じて、表示部１１に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを制御する。輝度制御部２３は、表示部１１にウィンドウ部が表示されるときには、ウィンドウ部の大きさに応じて、適切な明るさに制御された状態でウィンドウ部が開かれる。 When the determination unit 22 determines that the window portion is to be displayed on the display unit 11, the brightness control unit 23 controls the brightness of the image signal output to the display unit 11 according to the preset area of the window portion. Controls the signal strength clip level that displays the white level. When the window portion is displayed on the display portion 11, the brightness control portion 23 opens the window portion while controlling the brightness to be appropriate according to the size of the window portion.
　上述したように、本実施形態によれば、表示部１１にウィンドウ部が表示されるときには、ウィンドウ部の大きさに応じて、適切な明るさに制御された状態でウィンドウ部を開くことができる。本実施形態によれば、輝度の高いウィンドウ部などの他のウィンドウを開くときに、わずかな時間でも眩しさにより不快に感じることを抑制できる。 As described above, according to the present embodiment, when the window portion is displayed on the display portion 11, the window portion can be opened while the brightness is controlled appropriately according to the size of the window portion. . According to the present embodiment, it is possible to suppress discomfort due to glare even for a short period of time when another window such as a high-brightness window is opened.
　図示した表示装置の各構成要素は、機能概念的なものであり、必ずしも物理的に図示の如く構成されていなくてもよい。すなわち、各装置の具体的形態は、図示のものに限られず、各装置の処理負担や使用状況などに応じて、その全部または一部を任意の単位で機能的または物理的に分散または統合してもよい。 Each component of the illustrated display device is functionally conceptual and does not necessarily have to be physically configured as illustrated. In other words, the specific form of each device is not limited to the illustrated one, and all or part of it may be functionally or physically distributed or integrated in arbitrary units according to the processing load and usage conditions of each device. may
　表示装置の構成は、例えば、ソフトウェアとして、メモリにロードされたプログラムなどによって実現される。上記実施形態では、これらのハードウェアまたはソフトウェアの連携によって実現される機能ブロックとして説明した。すなわち、これらの機能ブロックについては、ハードウェアのみ、ソフトウェアのみ、または、それらの組み合わせによって種々の形で実現できる。 The configuration of the display device is implemented by, for example, a program loaded into the memory as software. In the above embodiments, functional blocks realized by cooperation of these hardware or software have been described. That is, these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof.
　上記に記載した構成要素には、当業者が容易に想定できるもの、実質的に同一のものを含む。さらに、上記に記載した構成は適宜組み合わせが可能である。また、本発明の要旨を逸脱しない範囲において構成の種々の省略、置換または変更が可能である。 The components described above include those that can be easily assumed by those skilled in the art and those that are substantially the same. Furthermore, the configurations described above can be combined as appropriate. Also, various omissions, substitutions, or modifications of the configuration are possible without departing from the gist of the present invention.
　テキストウィンドウ部に限らず、白地の背景を有する他のウィンドウ部に適用可能である。 　It can be applied not only to the text window part but also to other window parts with a white background.
　本開示の表示制御装置、プログラムおよび表示制御方法は、例えば、画像であるレントゲンまたはマンモグラフィーなどの読影画像を読影する装置、または、自然画などの画像を表示する表示装置に使用することができる。 The display control device, program, and display control method of the present disclosure can be used, for example, in a device that interprets an image such as an X-ray image or a mammogram, or a display device that displays an image such as a natural image.
　本開示は、SDGs(Sustainable　Development　Goals：持続可能な開発目標)の「すべての人に健康と福祉を」の実現に貢献し、ヘルスケア製品・サービスによる価値創出に寄与する事項を含む。 This disclosure includes matters that contribute to the realization of the SDGs (Sustainable Development Goals) "Good health and well-being for all" and contributes to the creation of value through healthcare products and services.
　１０　　　表示装置
　１１　　　表示部
　２０　　　制御部（表示制御装置）
　２１　　　検出部
　２２　　　判定部
　２３　　　輝度制御部
　２４　　　表示制御部
　１０１　　ウィンドウ部 10 display device 11 display unit 20 control unit (display control device)
21 detection unit 22 determination unit 23 brightness control unit 24 display control unit 101 window unit

Claims (5)

  1. 　画像信号が外部から供給される表示制御装置であって、
    　前記供給された画像信号を受けて表示部に画面画像を表示するよう制御する表示制御部と、
    　前記画面画像の中のウィンドウ部の面積の、前記画面画像の面積に対する比率が閾値を超えたか否かを判定する判定部と、
    　前記判定部の判定結果に応じて、前記表示制御部から前記表示部に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを制御する輝度制御部と、
    　を備える表示制御装置。     A display control device to which an image signal is supplied from the outside,
    a display control unit that receives the supplied image signal and controls the display unit to display a screen image;
    a determination unit that determines whether a ratio of the area of the window portion in the screen image to the area of the screen image exceeds a threshold;
    a luminance control unit that controls a clip level of a signal intensity for displaying a white level among image signals output from the display control unit to the display unit according to a determination result of the determination unit;
    A display controller comprising:
  2. 　前記輝度制御部は、前記判定部により前記比率が閾値を超えたと判定された場合、前記表示制御部から前記表示部に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを低下させる、
    　請求項１に記載の表示制御装置。     The brightness control unit reduces a clip level of a signal intensity for displaying a white level among image signals output from the display control unit to the display unit when the determination unit determines that the ratio exceeds a threshold. let
    The display control device according to claim 1.
  3. 　前記輝度制御部は、前記判定部により前記比率が閾値を超えたと判定された場合、前記比率の変化に応じて、前記表示制御部から前記表示部に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを変化させる、
    　請求項１または２に記載の表示制御装置。     The brightness control unit displays a white level of the image signal output from the display control unit to the display unit according to a change in the ratio when the determination unit determines that the ratio exceeds the threshold. Varying the signal strength clip level for
    The display control device according to claim 1 or 2.
  4. 　表示部に画面画像を表示するよう制御する表示制御ステップと、
    　前記画面画像の中のウィンドウ部の面積の、前記画面画像の面積に対する比率が閾値を超えたか否かを判定する判定ステップと、
    　前記判定ステップの判定結果に応じて、前記表示部に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを制御する輝度制御ステップと、
    　を表示制御装置として動作するコンピュータが実行するプログラム。     a display control step for controlling display of a screen image on the display unit;
    a determination step of determining whether a ratio of the area of the window portion in the screen image to the area of the screen image exceeds a threshold;
    a brightness control step of controlling a clip level of a signal intensity for displaying a white level among image signals output to the display unit according to the determination result of the determination step;
    A program executed by a computer that operates as a display controller.
  5. 　表示部に画面画像を表示するよう制御する表示制御ステップと、
    　前記画面画像の中のウィンドウ部の面積の、前記画面画像の面積に対する比率が閾値を超えたか否かを判定する判定ステップと、
    　前記判定ステップの判定結果に応じて、前記表示部に出力される画像信号のうち白レベルを表示する信号強度のクリップレベルを制御する輝度制御ステップと、
    　を含む表示制御方法。     a display control step for controlling display of a screen image on the display unit;
    a determination step of determining whether a ratio of the area of the window portion in the screen image to the area of the screen image exceeds a threshold;
    a brightness control step of controlling a clip level of a signal intensity for displaying a white level among image signals output to the display unit according to the determination result of the determination step;
    display control methods, including
PCT/JP2022/045460 2021-12-23 2022-12-09 Display control device, program, and display control method WO2023120240A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001175192A (en) * 1999-12-14 2001-06-29 Matsushita Electric Ind Co Ltd Display device
US20100026735A1 (en) * 2005-05-04 2010-02-04 Plut William J Luminance suppression power conservation
WO2013018410A1 (en) * 2011-08-03 2013-02-07 シャープ株式会社 Video display device
JP2017142343A (en) * 2016-02-09 2017-08-17 キヤノン株式会社 Display device and method for controlling the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001175192A (en) * 1999-12-14 2001-06-29 Matsushita Electric Ind Co Ltd Display device
US20100026735A1 (en) * 2005-05-04 2010-02-04 Plut William J Luminance suppression power conservation
WO2013018410A1 (en) * 2011-08-03 2013-02-07 シャープ株式会社 Video display device
JP2017142343A (en) * 2016-02-09 2017-08-17 キヤノン株式会社 Display device and method for controlling the same

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