TW202126019A - Screen color calibration method and system - Google Patents

Abstract

The invention provides a screen color calibration method and system. The method includes: in response to determining that a mouse device corresponding to a screen exhibits a suspending posture, controlling the mouse device to switch to a color calibration mode; controlling the screen to display a plurality of preset images, and controlling the mouse device to detect the preset images to obtain multiple display parameters of the screen; determining a screen type and a screen color space of the screen based on the display parameters; performing a color calibration operation on the screen based on the screen type and screen color space of the screen.

Description

Screen color calibration method and screen color calibration system

The present invention relates to a screen calibration technology, and particularly relates to a screen color calibration method and a screen color calibration system.

Most of the monitor color correction devices sold on the market require an external color correction device to the computer device and attach it to the center of the display for color correction. Although the color calibration process is simple, it requires an additional hardware device at a high unit price, which will incur additional costs for the user.

In addition, before performing panel measurement analysis and color calibration, the current color calibration device and related color calibration software require the user to manually select the display type, and also need to consider the color space of the display before applying the corresponding comparison standards and calibration. Color parameter module. However, this mechanism is a big problem for users who do not know the type of panel. In addition to making the color measurement results unsatisfactory, it may also cause inconsistent color calibration results.

In view of this, the present invention provides a screen color calibration method and a screen color calibration system, which can be used to solve the above technical problems.

The present invention provides a screen color calibration method, which includes: responding to determining that a mouse device corresponding to a screen presents a hanging posture, and controlling the mouse device to switch to a color calibration mode, wherein a photosensitive element and A light-emitting element, and the mouse device switched to the color calibration mode disables the light-emitting element; controls the screen to display multiple preset images, and controls the mouse device to detect the aforementioned preset images through the photosensitive element to obtain multiple displays on the screen Parameters: Determine a screen type and a screen color space of the screen based on the aforementioned display parameters; perform a color calibration operation on the screen based on the screen type and screen color space of the screen.

The invention provides a screen color correction system, which includes a mouse device and a computer device. A light-emitting element and a photosensitive element are arranged at the bottom of the mouse device. The computer device is connected to a mouse device and a screen, and is configured to perform the following steps; in response to determining that the mouse device presents a hanging posture, the mouse device is controlled to switch to a color calibration mode, and the slide that is switched to the color calibration mode The mouse device disables the light-emitting element; controls the screen to display multiple preset images, and controls the mouse device to detect the aforementioned preset images through the photosensitive element to obtain multiple display parameters of the screen; determine a screen type and the screen based on the aforementioned display parameters A screen color space; based on the screen type and screen color space to perform a color calibration operation on the screen.

Based on the above, the method and system of the present invention can use a mouse device as a color corrector to detect related display parameters of the screen to determine the screen type and screen color space of the screen, so as to perform the color correction operation of the screen accordingly. In this way, a more convenient, accurate and low-cost color calibration method can be provided for users.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

Please refer to FIG. 1, which is a schematic diagram of a screen color calibration system according to an embodiment of the present invention. As shown in FIG. 1, the screen color correction system 100 may include a computer device 110 and a mouse device 120. In different embodiments, the computer device 110 is, for example, a general personal computer, a notebook computer, a server, etc., but it is not limited thereto. In an embodiment of the present invention, the bottom of the mouse device 120 may be provided with a photosensitive element 122 and a light-emitting element 124, wherein the light-sensitive element 122 is, for example, an ambient light sensor (Ambient Light Sensor), and the light-emitting element 124 is, for example, infrared light. Transmitter, but the present invention may not be limited to this.

In this embodiment, the computer device 110 can be connected to the mouse device 120 and the screen 199, and the computer device 110 can cooperate with the mouse device 120 to execute the screen color calibration method of the present invention to perform the color calibration operation on the screen 199, as follows It will be further explained.

Please refer to FIG. 2, which is a flowchart of a screen color calibration method according to an embodiment of the present invention. The method of this embodiment can be executed by the computer device 110 of FIG.

First, in step S210, in response to determining that the mouse device 120 is in a hanging posture, the computer device 110 can control the mouse device 120 to switch to the color calibration mode.

In the embodiment of the present invention, the computer device 110 may be installed with software that allows the user to calibrate the color of the screen 199, and this software may provide an interface as shown in FIG. 3 for the user's reference after activation, for example.

Please refer to FIG. 3, which is a schematic diagram of a color calibration software interface drawn according to an embodiment of the present invention. As shown in FIG. 3, the computer device 110 can control the screen 199 to display a prompt message 310 through the software interface 300, where the prompt message 310 can be used to prompt the user to hang the mouse device 120 in front of the specific display area 320 of the screen 199.

Afterwards, the computer device 110 can detect whether the mouse device 120 has assumed a hanging posture. If so, this means that the user may have suspended the mouse device 120 in front of the specific display area 320 of the screen 199 according to the prompt message 310 to facilitate subsequent color calibration operations. Therefore, the computer device 110 can continue to execute step S210 to switch the mouse device 120 to the color calibration mode. In one embodiment, the computer device 110 can detect whether the mouse device 120 has assumed a hanging posture based on the technical means disclosed in Taiwan Patent Application No. 107142107, but the invention is not limited to this.

In one embodiment, the mouse device 120 switched to the color calibration mode can disable the light-emitting element 124 to prevent the light (for example, infrared light) emitted by the mouse device 120 from influencing the subsequent detection behavior of the mouse device 120.

Then, in step S220, the computer device 110 can control the screen 199 to display a plurality of preset images, and control the mouse device 120 to detect the aforementioned preset images through the photosensitive element 122 to obtain a plurality of display parameters of the screen 199. In one embodiment, the above-mentioned preset image is, for example, a red image (which can be characterized as R(255, 0, 0)), a green image (which can be represented as G(0, 255, 0)), and a blue image (which can be characterized as G(0, 255, 0)). B (0, 0, 255)), white images (which can be represented as W (255, 255, 255)) and black images (which can be represented as (0, 0, 0)), and the above-mentioned preset images can be displayed in In the specific display area 320, the mouse device 120 hung in front of the specific display area 320 can detect through the photosensitive element 122.

In different embodiments, the above-mentioned display parameters may include the frequency spectrum distribution of the screen 199, multiple screen color coordinates (such as R, G, and B color coordinates), and the National Television System Committee (NTSC) color gamut. Ratio, brightness and contrast, where the above-mentioned spectrum distribution may include red wavelength range, green wavelength range and blue wavelength range, but it may not be limited thereto. In addition, the technical means for obtaining the above-mentioned display parameters by detecting a preset image can refer to related prior art documents, which will not be repeated here.

After that, in step S230, the computer device 110 can determine the screen type and the screen color space of the screen 199 based on the aforementioned display parameters. For example, in the first embodiment, it is reflected in the determination that the amplitudes of the red wavelength range and the green wavelength range in the spectral distribution of the screen 199 are both smaller than the preset amplitude threshold (for example, 0.5), and the amplitude of the screen 199 The NTSC color gamut ratio is less than a preset ratio value (for example, 80%), and the computer device 110 can determine that the screen type of the screen 199 is a liquid crystal display (LCD).

In the second embodiment, it is reflected in the determination that the amplitudes of the red wavelength range and the green wavelength range in the spectral distribution of the screen 199 are both greater than the preset amplitude threshold (for example, 0.5), and the NTSC color gamut ratio is between the preset Within the setting range (for example, 95%-105%), the computer device 110 can determine that the screen type of the screen 199 belongs to a wide color gamut LCD (wide color gamut LCD). In the third embodiment, in response to determining that the contrast of the screen 199 is higher than the contrast threshold (for example, 3000), the computer device 110 may determine that the screen type of the screen 199 is an organic light emitting diode (OLED) screen.

In order to make the above concept of determining the screen type easier to understand, the following is supplemented with FIGS. 4A to 4B for further explanation. Please refer to FIG. 4A, which is a schematic diagram of the display parameters according to the first embodiment of the present invention. As shown in FIG. 4A, the spectrum distribution 411 includes a green wavelength section 411a and a red wavelength section 411b, and their respective amplitudes are less than a preset amplitude threshold (for example, 0.5). Moreover, it can be seen from FIG. 4A that the NTSC color gamut ratio of the screen 199 is 75.5% NTSC, which is less than the preset ratio value (for example, 80%). Therefore, the computer device 110 can correspondingly determine that the screen type of the screen 199 belongs to LCD.

Please refer to FIG. 4B, which is a schematic diagram of the display parameters according to the second embodiment of the present invention. As shown in FIG. 4B, the spectrum distribution 412 includes a green wavelength section 412a and a red wavelength section 412b, and their respective amplitudes are greater than a preset amplitude threshold (for example, 0.5). Moreover, it can be seen from FIG. 4B that the NTSC color gamut ratio of the screen 199 is 98.6% NTSC, which is within a preset range (for example, 95%-105%). Therefore, the computer device 110 can correspondingly determine that the screen type of the screen 199 belongs to the wide color gamut LCD.

Please refer to FIG. 4C, which is a schematic diagram of the display parameters according to the third embodiment of the present invention. As shown in FIG. 4C, since the contrast of the screen 199 (ie, 1666243) is higher than the contrast threshold (for example, 3000), the computer device 110 can determine that the screen type of the screen 199 is an OLED screen.

、

、

表示。In addition, after obtaining the screen color coordinates of the screen 199 (for example, the R, G, and B color coordinates in FIG. 4A), the computer device 110 can determine the screen color space of the screen 199 (for example, DCI-P3, Adobe RGB, and sRGB). Etc.), and related technical means can refer to related prior art documents, which will not be repeated here. In addition, for the convenience of the following description, the screen color coordinates of screen 199 will be

,

,

Express.

、

、

表示。After determining the screen type and screen color space of the screen 199, in step S240, the computer device 110 may perform a color calibration operation on the screen 199 based on the screen type and the screen color space of the screen 199. In one embodiment, the computer device 110 may determine a target color space corresponding to the screen color space, and obtain multiple target color coordinates of the target color space. For example, assuming that the screen color space is sRGB, the computer device 110 can use sRGB as the target color space corresponding to the screen color space, and obtain various target color coordinates of sRGB. Assuming that the screen color space is Adobe RGB, the computer device 110 can use Adobe RGB as the target color space corresponding to the screen color space, and obtain the respective target color coordinates of Adobe RGB. If the screen color space is DCI-P3, the computer device 110 can use DCI-P3 as the target color space corresponding to the screen color space, and obtain each target color coordinate of DCI-P3, but the invention is not limited to this. In addition, for the convenience of the following description, the target color coordinates of the target color space will be

,

,

Express.

Adobe RGB (0.640, 0.330) (0.210, 0.710) (0.150, 0.060) sRGB (0.640, 0.330) (0.300, 0.600) (0.150, 0.060) DCI-P3 (0.680, 0.320) (0.265, 0.690) (0.150, 0.060) 表1In an embodiment, the target color coordinates corresponding to each target color space may be as shown in Table 1 below. Target color space

Adobe RGB (0.640, 0.330) (0.210, 0.710) (0.150, 0.060) sRGB (0.640, 0.330) (0.300, 0.600) (0.150, 0.060) DCI-P3 (0.680, 0.320) (0.265, 0.690) (0.150, 0.060) Table 1

、

、

）與目標色座標（即

、

、

）之間的轉換關係可表示如下：

，其中

為用於將螢幕色座標轉換為目標色座標的轉換式，

、

、

分別是對應於

、

、

的紅增益值、綠增益值及藍增益值，

、

、

分別是對應於

、

、

的（可選的）修正參數。After that, the computer device 110 can generate a conversion formula for converting the screen color coordinates into the target color coordinates. In one embodiment, the screen color coordinates (ie

,

,

) And the target color coordinates (ie

,

,

The conversion relationship between) can be expressed as follows:

,in

Is a conversion formula used to convert screen color coordinates to target color coordinates,

,

,

Respectively correspond to

,

,

Red gain value, green gain value and blue gain value,

,

,

Respectively correspond to

,

,

The (optional) correction parameters.

Then, the computer device 110 can adjust the display color of the screen 199 based on the above conversion method. In one embodiment, the computer device 110 may record the red gain value, the green gain value, and the blue gain value in the conversion formula in an image processing unit (such as an integrated image processing unit (iGPU) or an independent image processing unit). (DGPU)) to adjust the display color of the screen 199.

In this way, the method and system of the present invention can make the screen 199 present the color performance closest to the real world after the color correction operation is performed on the screen 199.

In addition, after the above-mentioned color correction is performed on the screen 199, the white color temperature presented by the screen 199 can be adjusted to the standard D65 color (ie, the color temperature is 6500K). However, this configuration may make the color of the screen 199 appear yellowish. In this case, if the user adjusts the white color temperature (warm or cool color temperature) according to his own preferences, it is impossible to know whether the manually adjusted warm or cold color temperature is a standard (for example, complying with VESA specifications), which may lead to Eye fatigue or damage.

Therefore, the present invention also proposes a mechanism that allows the user to adjust the white color temperature of the screen 199 to meet their preference (for example, warmer or colder) and VESA specifications by scrolling the mouse device 120 wheel. The following will For further explanation.

In one embodiment, the computer device 110 may control the screen 199 to display a two-dimensional color coordinate map, where the two-dimensional color coordinate map may include black body rays. In addition, the computer device 110 can control the screen 199 to display a reference point at preset coordinates on the black body ray, where the preset coordinates correspond to the current white color temperature of the screen 199.

Please refer to FIG. 5, which is a two-dimensional color coordinate diagram drawn according to an embodiment of the present invention. As shown in FIG. 5, the two-dimensional color coordinate map 500 may include a black body width ray 510, and may include a reference point R1 located at a preset coordinate thereon. As mentioned above, after the color correction operation of the screen 199 is completed, its white color temperature should have been adjusted to 6500K accordingly, so the preset coordinates of the reference point R1 can be understood as the coordinates of D65, namely (0.313, 0.329).

Afterwards, the computer device 110 can detect the sliding of the scroll wheel of the mouse device 120, and move the reference point R1 to the target coordinates on the black body ray 510 in response to the scrolling of the scroll wheel, where the target coordinates correspond to the target white color temperature. In FIG. 5, it is assumed that the user moves the reference point R1 to the target coordinate T1 (for example (0.332, 0.340)) by rolling the wheel, and the corresponding target white color temperature is, for example, 5500K.

Then, the computer device 110 can adjust the red gain value, the green gain value, and the blue gain value based on the target coordinate T1 to adjust the white color temperature of the screen 199 to correspond to the target white color temperature (for example, 5500K).

In one embodiment, the computer device 110 can obtain the abscissa difference (for example -0.019) and the ordinate difference (for example, -0.011). After that, the computer device 110 may adjust the blue gain value based on at least one of the abscissa and the ordinate to eliminate one of the abscissa and the ordinate. For example, the computer device 110 can simultaneously increase the abscissa and ordinate of the preset coordinates by reducing the blue gain value, and the increase can correspond to one of the abscissa and ordinate difference (for example, 0.011 of the ordinate difference). In this case, the adjusted coordinates are, for example, (0.313+0.011, 0.329+0.011), that is, the above-mentioned ordinate difference is eliminated. Since adjusting the blue gain value can change the horizontal and vertical coordinates at the same time, the overall color adjustment change is minimal, so it can be adjusted before the red and green gain values to avoid the appearance of different colors due to rapid changes in colors.

After that, the computer device 110 may adjust the red gain value or the green gain value based on the other of the abscissa difference and the ordinate difference to eliminate the other of the abscissa difference and the ordinate difference. Continuing the above example, since there is still a -0.008 abscissa difference between the adjusted coordinates and the target coordinate, the computer device 110 can eliminate the abscissa difference by increasing the red gain value by 0.008. In this way, the white color temperature of the screen 199 can be adjusted to the target white color temperature (ie, 5500K).

In one embodiment, the user can trigger the computer device 110 to perform the above operation after moving the reference point R1 to the target coordinate corresponding to the target white color temperature, so as to adjust the white color temperature of the screen 199 to the target white color temperature. In other embodiments, the computer device 110 may also perform the above operation every time the scroll wheel is detected to adjust the white color temperature of the screen 199 accordingly, but the invention is not limited to this.

In summary, the method and system proposed by the present invention can use a mouse device with a photosensitive element on the bottom as a color correction device, and switch the mouse device to the color correction mode when the mouse device is detected to be in a hanging posture. To detect various preset images displayed on the screen to obtain the relevant display parameters of the screen. In addition, the present invention can determine the screen type and screen color space of the screen based on the display parameters of the screen, so as to realize the color calibration operation of the screen accordingly. In this way, the existing color correction software requires users to manually select the panel conditions, which is more convenient and friendly for users, and it can also avoid the situation that the color correction results do not meet the requirements.

In addition, the present invention further proposes a mechanism for the user to adjust the white color temperature to the target white color temperature by rolling the wheel. Since the target white color temperature is on the black body ray, the color displayed on the screen can meet the VESA standard.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be subject to those defined by the attached patent application scope.

100: Screen color calibration system 110: computer device 120: Mouse device 122: photosensitive element 124: Light-emitting element 199: Screen 300: software interface 310: Prompt message 320: specific display area 411, 412: spectrum distribution 411a, 412a: Green wavelength range 411b, 412b: Red wavelength range 500: Two-dimensional color coordinate map 510: Blackbody ray R1: reference point T1: target coordinates S210~S240: steps

FIG. 1 is a schematic diagram of a screen color calibration system according to an embodiment of the present invention. FIG. 2 is a flowchart of a screen color calibration method according to an embodiment of the present invention. FIG. 3 is a schematic diagram of a color calibration software interface according to an embodiment of the present invention. FIG. 4A is a schematic diagram of display parameters according to the first embodiment of the present invention. FIG. 4B is a schematic diagram of display parameters according to the second embodiment of the present invention. FIG. 4C is a schematic diagram of display parameters according to the third embodiment of the present invention. Fig. 5 is a two-dimensional color coordinate diagram drawn according to an embodiment of the present invention.

S210~S240: steps

Claims (10)

A method of screen color correction, including: In response to determining that a mouse device corresponding to a screen presents a hanging posture, the mouse device is controlled to switch to a color calibration mode, wherein the bottom of the mouse device is provided with a photosensitive element and a light emitting element, and the mouse device is switched to the The mouse device in the color calibration mode disables the light-emitting element; Controlling the screen to display a plurality of preset images, and controlling the mouse device to detect the preset images through the photosensitive element to obtain a plurality of display parameters of the screen; Determine a screen type and a screen color space of the screen based on the display parameters; Perform a color calibration operation on the screen based on the screen type and the screen color space of the screen. For example, the method described in claim 1 further includes displaying a prompt message, wherein the prompt message is used to prompt the mouse device to be hung in front of a specific display area of the screen. According to the method described in claim 1, wherein the preset images include red images, blue images, green images, white images, and black images. For the method described in claim 1, wherein the display parameters include a spectral distribution of the screen, a plurality of screen color coordinates, a National Television System Committee (NTSC) color gamut ratio, One brightness and one contrast. The method according to claim 4, wherein the spectrum distribution includes a red wavelength range and a green wavelength range, and the step of determining the screen type of the screen based on the display parameters includes: In response to determining that the amplitudes of the red wavelength range and the green wavelength range are both smaller than a preset amplitude threshold, and the NTSC color gamut ratio is less than a preset ratio value, it is determined that the screen type of the screen belongs to a liquid crystal Screen In response to determining that the amplitudes of the red wavelength range and the green wavelength range are both greater than the preset amplitude threshold, and the NTSC color gamut ratio is within a preset range, it is determined that the screen type of the screen belongs to one Wide color gamut LCD screen; In response to determining that the contrast is higher than a contrast threshold, it is determined that the screen type of the screen belongs to an organic light emitting diode screen. The method according to claim 1, wherein the display parameters include a plurality of screen color coordinates of the screen, and the step of determining the screen color space of the screen based on the display parameters includes based on the screen color coordinates Determine the screen color space of the screen. According to the method described in item 6 of the scope of patent application, the steps of performing the color correction operation on the screen based on the screen type and the screen color space of the screen include: Determine a target color space corresponding to the screen color space, and obtain multiple target color coordinates of the target color space; Generating a conversion formula for converting the screen color coordinates into the target color coordinates; Adjust the display color of the screen based on the conversion. For the method described in claim 7, wherein the conversion formula includes a red gain value, a green gain value, and a blue gain value, the mouse device includes a scroll wheel, and is based on the screen type and After the screen color space performs the color correction operation on the screen, the method further includes: Controlling the screen to display a two-dimensional color coordinate map, wherein the two-dimensional color coordinate map includes a black body ray; A preset coordinate on the black body ray displays a reference point, wherein the preset coordinate corresponds to the current white color temperature of the screen; Moving the reference point to a target coordinate on the black body ray in response to the scrolling of the scroll wheel, wherein the target coordinate corresponds to a target white color temperature; The red gain value, the green gain value, and the blue gain value are adjusted based on the target coordinates to adjust the white color temperature of the screen to correspond to the target white color temperature. For the method described in item 8 of the scope of patent application, the steps of adjusting the red gain value, the green gain value and the blue gain value based on the target coordinates include: Obtain a horizontal coordinate gap and a vertical coordinate gap between the preset coordinate and the target coordinate; Adjusting the blue gain value based on at least one of the abscissa gap and the ordinate gap to eliminate one of the abscissa gap and the ordinate gap; Adjust the red gain value or the green gain value based on the other of the abscissa difference and the ordinate difference to eliminate the other of the abscissa difference and the ordinate difference. A screen color calibration system, including: A mouse device with a light-emitting element and a photosensitive element provided at the bottom; A computer device connected to the mouse device and a screen and configured to perform the following steps; In response to determining that the mouse device presents a hanging posture, control the mouse device to switch to a color calibration mode, wherein the mouse device switched to the color calibration mode disables the light-emitting element; Controlling the screen to display a plurality of preset images, and controlling the mouse device to detect the preset images through the photosensitive element to obtain a plurality of display parameters of the screen; Determine a screen type and a screen color space of the screen based on the display parameters; Perform a color calibration operation on the screen based on the screen type and the screen color space of the screen.

Images