Gamma correction method, correction device and related equipment

Abstract

The present invention provides a Gamma correction method, a correction device and related equipment, wherein the correction method comprises: adjusting the brightness value of a target grayscale picture of a display device to a target brightness value at a first refresh rate, and obtaining a target grayscale voltage correction value corresponding to the target grayscale picture; adjusting the refresh rate of the display device to a second refresh rate, and obtaining a matching brightness value of the target grayscale picture of the display device at the target grayscale voltage correction value; wherein the second refresh rate is greater than the first refresh rate; at the second refresh rate, based on the matching brightness value and a target Gamma curve, obtaining other grayscale voltage correction values ​​corresponding to other grayscale pictures; using the target grayscale voltage correction value and other grayscale voltage correction values ​​as respective grayscale voltage correction values ​​at the first refresh rate, and performing Gamma correction on the display device, so as to avoid the problem of inaccurate Gamma correction results caused by unstable brightness of the display device.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a Gamma correction method, a correction device and related equipment. Background Art

[0002] Before the display device leaves the factory, it will be gamma-corrected to adjust the gamma curve of the display device to the required target gamma curve to improve the display effect of the display screen seen by the human eye. Among them, the gamma curve represents the proportional relationship between the input signal and the output brightness of the display device at each grayscale. The current gamma correction method will perform gamma correction in the AOD (Always on display) display mode. However, because the brightness of the display device is unstable in the AOD display mode, it is prone to problems such as screen flickering. Therefore, the gamma correction result will be inaccurate, which will lead to poor display effect of the display device. Summary of the invention

[0003] In view of this, the present invention is dedicated to providing a Gamma correction method, correction device and related equipment to improve the accuracy of Gamma correction.

[0004] In a first aspect, the present invention provides a gamma correction method, comprising:

[0005] At a first refresh rate, adjusting the brightness value of a target grayscale image of a display device to a target brightness value, and obtaining a target grayscale voltage correction value corresponding to the target grayscale image;

[0006] Adjusting the refresh rate of the display device to a second refresh rate, and obtaining a matching brightness value of a target grayscale picture of the display device under the target grayscale voltage correction value; the second refresh rate is greater than the first refresh rate;

[0007] At the second refresh rate, based on the matching brightness value and the target Gamma curve, other grayscale voltage correction values ​​corresponding to other grayscale images are obtained;

[0008] The target grayscale voltage correction value and the other grayscale voltage correction values ​​are used as respective grayscale voltage correction values ​​at the first refresh rate to perform gamma correction on the display device.

[0009] Optionally, obtaining other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and the target Gamma curve includes:

[0010] Calculating matching brightness values ​​of multiple preset binding point grayscale images according to the matching brightness value and the target Gamma curve;

[0011] At the second refresh rate, the brightness value of the display device is adjusted to each of the matching brightness values ​​in sequence, and the grayscale voltage correction values ​​of the plurality of preset binding point grayscale images are obtained;

[0012] Based on the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures and the target grayscale voltage correction value, the grayscale voltage correction values ​​of the remaining grayscale pictures are calculated; the other grayscale voltage correction values ​​include the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures and the grayscale voltage correction values ​​of the remaining grayscale pictures.

[0013] Optionally, the first refresh rate is the refresh rate in a first display mode, and the first display mode includes an AOD display mode; the second refresh rate is the refresh rate in a second display mode, and the second display mode includes a normal display mode; and the target grayscale image is a maximum grayscale image.

[0014] Optionally, it further includes: confirming whether the Gamma correction effect of the display device meets the requirements;

[0015] If yes, burning the target grayscale voltage correction value and the other grayscale voltage correction values ​​as the respective grayscale voltage correction values ​​at the first refresh rate;

[0016] If not, obtaining other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and the target Gamma curve at the second refresh rate again

[0017] In a second aspect, the present invention provides a gamma correction device, comprising:

[0018] A first adjustment module, configured to adjust the brightness value of a target grayscale image of a display device to a target brightness value at a first refresh rate, and obtain a target grayscale voltage correction value corresponding to the target grayscale image;

[0019] A second adjustment module, used to adjust the refresh rate of the display device to a second refresh rate, and obtain a matching brightness value of a target grayscale picture of the display device under the target grayscale voltage correction value; the second refresh rate is greater than the first refresh rate;

[0020] A first processing module, configured to obtain other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and a target gamma curve at the second refresh rate;

[0021] The second processing module is used to use the target grayscale voltage correction value and the other grayscale voltage correction values ​​as respective grayscale voltage correction values ​​at the first refresh rate to perform gamma correction on the display device.

[0022] Optionally, the first processing module obtains other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and the target Gamma curve, including:

[0023] Calculating matching brightness values ​​of multiple preset binding point grayscale images according to the matching brightness value and the target Gamma curve;

[0024] At the second refresh rate, the brightness value of the display device is adjusted to each of the matching brightness values ​​in sequence, and the grayscale voltage correction values ​​of the plurality of preset binding point grayscale images are obtained;

[0025] Based on the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures and the target grayscale voltage correction value, the grayscale voltage correction values ​​of the remaining grayscale pictures are calculated; the other grayscale voltage correction values ​​include the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures and the grayscale voltage correction values ​​of the remaining grayscale pictures.

[0026] Optionally, the first refresh rate is the refresh rate in a first display mode, and the first display mode includes an AOD display mode; the second refresh rate is the refresh rate in a second display mode, and the second display mode includes a normal display mode; and the target grayscale image is a maximum grayscale image.

[0027] Optionally, the second processing module is also used to confirm whether the gamma correction effect of the display device meets the requirements; if so, the target grayscale voltage correction value and the other grayscale voltage correction values ​​are used as the grayscale voltage correction values ​​at the first refresh rate; if not, an instruction is sent to the first processing module so that the first processing module obtains other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and the target gamma curve at the second refresh rate.

[0028] In a third aspect, the present invention provides an electronic device, comprising:

[0029] A memory for storing at least one set of instructions;

[0030] A processor is used to execute the at least one set of instructions to perform the gamma correction method as described in any one of the above items.

[0031] In a fourth aspect, the present invention provides a readable storage medium, wherein the readable storage medium stores at least one set of instructions, and the at least one set of instructions is used to enable a processor to execute the gamma correction method as described in any one of the above items.

[0032] The gamma correction method, correction device and related equipment provided by the present invention have a second refresh rate that is greater than the first refresh rate. Therefore, the brightness stability of the display device is higher at the second refresh rate. By obtaining the brightness value and the grayscale voltage correction value based on the display device with higher brightness stability, the problem of inaccurate gamma correction results caused by unstable brightness of the display device can be avoided.

[0033] Furthermore, since other grayscale voltage correction values ​​are obtained based on the target grayscale voltage correction value obtained at the first refresh rate and the matching brightness value obtained at the second refresh rate, the grayscale voltage correction value obtained at the second refresh rate is the same as the grayscale voltage correction value obtained at the first refresh rate, and the two have the same gamma correction effect on the display device. Therefore, the grayscale voltage correction value obtained at the second refresh rate can be used as the grayscale voltage correction value obtained at the first refresh rate to correct the gamma of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0035] Figure 1 A flowchart of a gamma correction method provided by an embodiment of the present invention;

[0036] Figure 2 A flowchart of a gamma correction method provided by another embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the structure of a gamma correction device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] At present, different grayscales are used to represent different brightness levels from the darkest to the brightest. The larger the grayscale, the higher the brightness, and the smaller the grayscale, the lower the brightness. In addition, the more grayscales there are, the more delicate the picture that the display device can present. Usually, an 8it display device has 0 to 255 grayscales, that is, 256 grayscales.

[0040] Ideally, after inputting the same voltage value at each grayscale to different display devices, the brightness values ​​at each grayscale output by different display devices are the same. That is, ideally, the proportional relationship between the input signal and the output brightness of different display devices is the same, or in other words, the gamma curves of different display devices are the same.

[0041] However, in reality, due to the influence of differentiation factors such as process fluctuations, the display performance of different display devices is different, that is, after the same voltage value at each grayscale is input to different display devices, the brightness values ​​at each grayscale output by different display devices are different. Based on this, it is necessary to calibrate the gamma curves of different display devices.

[0042] In addition, since the human eye's perception of brightness changes nonlinearly, that is, the human eye's perception of low brightness is greater than its perception of high brightness, in order to improve the effect of the display image viewed by the human eye, it is also necessary to correct the Gamma curve of the display device to a nonlinear Gamma curve that meets the needs of changes in human eye perception.

[0043] Currently, the gamma curve of the display device is calibrated to a unified target gamma curve. The gamma value of the target gamma curve is generally between 2.2 and 2.5. In addition, the gamma correction is currently performed based on the brightness value of the display screen of the display device in the AOD display mode.

[0044] Display devices can generally be divided into three display modes: the first is the normal display mode, which is displayed at normal brightness; the second is the HBM (High Brightness mode) display mode, which is used to improve screen readability outdoors or under strong light; the third is the AOD display mode, which is mainly used to reduce the current consumption in the standby state to increase the battery life. Each display mode can be switched freely.

[0045] However, in AOD display mode, the refresh rate of the display device is low, which causes the display device to have unstable brightness when displaying grayscale images, resulting in inaccurate gamma correction results, and thus poor display effects. For example, when displaying grayscale gradient images, heterochromatic color may occur.

[0046] Based on this, the present invention provides a gamma correction scheme, which obtains the grayscale voltage correction values ​​of each grayscale image of the display device at a higher refresh rate, and performs gamma correction on the display device at a lower refresh rate to improve the accuracy of the gamma correction result and improve the display effect of the display device.

[0047] As an optional implementation of the content disclosed in the present invention, an embodiment of the present invention provides a gamma correction method for performing gamma correction on a display device. The display device may be a liquid crystal display device, an LED display device, an OLED display device, or the like.

[0048] like Figure 1 As shown, Figure 1 A flowchart of a gamma correction method provided by an embodiment of the present invention, the gamma correction method comprising:

[0049] S101: At a first refresh rate, adjusting the brightness value of a target grayscale image of a display device to a target brightness value, and obtaining a target grayscale voltage correction value corresponding to the target grayscale image;

[0050] Before performing gamma correction, the brightness value of the target grayscale image and the target gamma curve are generally determined according to customer requirements. In some embodiments, the target grayscale image is the maximum grayscale image, that is, the 255 grayscale image. The target gamma curve is a gamma curve with a gamma value between 2.2 and 2.5.

[0051] When performing gamma correction, the refresh rate of the display device is first adjusted to the first refresh rate. In some embodiments, the first refresh rate is the refresh rate in the first display mode, and the first display mode includes the AOD display mode. Based on this, when performing gamma correction, the display mode of the display device is first adjusted to the AOD display mode, and then the brightness value of the 255 grayscale picture of the display device is adjusted to the target brightness value.

[0052] Among them, the anode voltage of the pixel of the display device can be adjusted by adjusting the value of the register in the driver chip, thereby adjusting the brightness value of the 255 grayscale image of the display device; the optical data of the display device can be captured by an optical detector to obtain the brightness value of the display device to determine whether its brightness value is equal to the target brightness value.

[0053] S102: adjusting the refresh rate of the display device to a second refresh rate, and obtaining a matching brightness value of a target grayscale picture of the display device under a target grayscale voltage correction value; the second refresh rate is greater than the first refresh rate;

[0054] In some embodiments of the present invention, the first refresh rate is a screen refresh rate of a display device in a first display mode, the first display mode includes an AOD display mode, and the second refresh rate is a screen refresh rate of a display device in a second display mode, the second display mode includes a normal display mode. The second refresh rate is greater than the first refresh rate.

[0055] Of course, the present invention is not limited to this. In other embodiments, the first refresh rate may also be the refresh rate of other display modes such as the normal display mode, and the second refresh rate may also be the refresh rate of other display modes such as the HBM display mode, as long as the second refresh rate can improve the stability of the brightness of the display device.

[0056] After adjusting the brightness value of the target grayscale image of the display device to the target brightness value and obtaining the target grayscale voltage correction value corresponding to the target grayscale image, the refresh rate of the display device is adjusted to the second refresh rate, which is greater than the first refresh rate, and then, while ensuring that the data voltage of the display device remains unchanged, that is, at the target grayscale voltage correction value, the display brightness of the display device is measured by an optical detector, etc., to obtain the matching brightness value of the target grayscale image of the display device at the second refresh rate. Since the greater the refresh rate, the better the display stability of the display device, the brightness stability of the display device at the second refresh rate is better, and the accuracy of gamma correction is higher according to the matching brightness value obtained at the second refresh rate.

[0057] S103: obtaining other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and the target Gamma curve at the second refresh rate;

[0058] In some embodiments, based on the matching brightness value and the target gamma curve, obtaining other grayscale voltage correction values ​​corresponding to other grayscale pictures includes: calculating the matching brightness values ​​of multiple preset binding point grayscale pictures according to the matching brightness value of the target grayscale picture and the target gamma curve; at the second refresh rate, adjusting the brightness value of the display device to each matching brightness value in turn to obtain the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures; based on the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures and the target grayscale voltage correction value, calculating the grayscale voltage correction values ​​of the remaining grayscale pictures except the target grayscale picture and the multiple preset binding point grayscale pictures; wherein, other grayscale voltage correction values ​​except the target grayscale voltage correction value include the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures and the grayscale voltage correction values ​​of the remaining grayscale pictures.

[0059] In some specific examples, after obtaining the matching brightness value of the 255 grayscale picture, the matching brightness values ​​of multiple preset binding point grayscale pictures are calculated according to the matching brightness value of the 255 grayscale picture and the target Gamma curve, and then at the second refresh rate, the brightness value of the display device is adjusted to each matching brightness value in turn to obtain the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures, and then based on the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures, the 255 grayscale voltage correction value and the target Gamma curve, the grayscale voltage correction values ​​of the remaining grayscale pictures are calculated.

[0060] Of course, the present invention is not limited to this. In other embodiments, the matching brightness values ​​of grayscale images other than the target grayscale image can be calculated based on the matching brightness value of the target grayscale image and the target Gamma curve; at the second refresh rate, the brightness value of the display device is adjusted to each matching brightness value in turn to obtain the grayscale voltage correction value of other grayscale images.

[0061] It should be noted that the preset binding point grayscale picture is a grayscale picture of a preset partial grayscale, and each binding point grayscale picture is a grayscale picture corresponding to a grayscale. For example, the multiple preset binding points can be 0 grayscale, 25 grayscale, 50 grayscale, 75 grayscale, 100 grayscale, 125 grayscale, 150 grayscale, 175 grayscale, 200 grayscale, 225 grayscale and 255 grayscale.

[0062] S104: Using the target grayscale voltage correction value and other grayscale voltage correction values ​​as respective grayscale voltage correction values ​​at the first refresh rate, and performing Gamma correction on the display device.

[0063] Since the other grayscale voltage correction values ​​are obtained based on the target grayscale voltage correction value obtained at the first refresh rate and the matching brightness value obtained at the second refresh rate, the grayscale voltage correction value obtained at the second refresh rate is the same as the grayscale voltage correction value obtained at the first refresh rate, and the two have the same gamma correction effect on the display device. Therefore, the grayscale voltage correction value obtained at the second refresh rate can be used as the grayscale voltage correction value obtained at the first refresh rate to correct the gamma of the display device.

[0064] The Gamma correction method provided by the present invention has a higher brightness stability of the display device at the second refresh rate because the second refresh rate is greater than the first refresh rate. Based on the display device with higher brightness stability, the brightness value and the grayscale voltage correction value are obtained, and the grayscale voltage correction value is used to perform Gamma correction, which can avoid the problem of inaccurate Gamma correction results caused by unstable brightness of the display device, improve the accuracy of the Gamma correction results, and improve the display effect of the display device at the first refresh rate. For example, the problem of heterochromaticity when displaying grayscale gradient pictures at the first refresh rate is improved, and the problem of inability to capture optical data due to pixel leakage is improved.

[0065] Moreover, at a higher second refresh rate, matching brightness values ​​of each grayscale image of the display device can be obtained, so that the optical data can be better captured, thereby obtaining the brightness values ​​of each grayscale image more quickly, thereby saving adjustment time and shortening Gamma correction time.

[0066] In some embodiments of the present invention, Figure 2 As shown, Figure 2 A flowchart of a gamma correction method provided in another embodiment of the present invention, after performing gamma correction on a display device, further includes:

[0067] S105: confirm whether the gamma correction effect of the display device meets the requirements; if yes, proceed to S106; if no, return to S103. S106: burn the target grayscale voltage correction value and other grayscale voltage correction values ​​as the grayscale voltage correction values ​​at the first refresh rate.

[0068] That is to say, after performing Gamma correction on the display device, confirm whether the Gamma correction effect of the display device meets the requirements. If so, burn the target grayscale voltage correction value and other grayscale voltage correction values ​​as the grayscale voltage correction values ​​at the first refresh rate, so that the display device is corrected at the first refresh rate or the first display mode according to the grayscale voltage correction values ​​at the first refresh rate to correct the display effect of the display device. If it does not meet the requirements, then at the second refresh rate, based on the matching brightness value and the target Gamma curve, obtain other grayscale voltage correction values ​​corresponding to other grayscale images.

[0069] Of course, the present invention is not limited to this. In other embodiments, if the Gamma correction effect of the display device does not meet the requirements, it is also possible to return to S101 and re-adjust the brightness value of the target grayscale image of the display device to the target brightness value at the first refresh rate to obtain the target grayscale voltage correction value corresponding to the target grayscale image, or return to S102 and re-adjust the refresh rate of the display device to the second refresh rate to obtain the matching brightness value of the target grayscale image of the display device at the target grayscale voltage correction value; the second refresh rate is greater than the first refresh rate, which will not be repeated here.

[0070] As another optional implementation of the content disclosed in the present invention, an embodiment of the present invention provides a gamma correction device for performing gamma correction on a display device. Figure 3 As shown, Figure 3 A schematic diagram of the structure of a gamma correction device provided by an embodiment of the present invention, the gamma correction device comprising:

[0071] A first adjustment module 31 is used to adjust the brightness value of a target grayscale image of a display device to a target brightness value at a first refresh rate, and obtain a target grayscale voltage correction value corresponding to the target grayscale image;

[0072] A second adjustment module 32 is used to adjust the refresh rate of the display device to a second refresh rate, and obtain a matching brightness value of a target grayscale picture of the display device under a target grayscale voltage correction value; the second refresh rate is greater than the first refresh rate;

[0073] A first processing module 33, configured to obtain other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and the target Gamma curve at a second refresh rate;

[0074] The second processing module 34 is used for using the target grayscale voltage correction value and other grayscale voltage correction values ​​as respective grayscale voltage correction values ​​at the first refresh rate to perform Gamma correction on the display device.

[0075] The gamma correction device provided by the present invention has other grayscale voltage correction values ​​obtained based on the target grayscale voltage correction value obtained at the first refresh rate and the matching brightness value obtained at the second refresh rate. Therefore, the grayscale voltage correction value obtained at the second refresh rate is the same as the grayscale voltage correction value obtained at the first refresh rate, and the two have the same gamma correction effect on the display device. Therefore, the grayscale voltage correction value obtained at the second refresh rate can be used as the grayscale voltage correction value obtained at the first refresh rate to correct the gamma of the display device.

[0076] Since the second refresh rate is greater than the first refresh rate, the brightness stability of the display device is higher at the second refresh rate. Based on the display device with higher brightness stability, the brightness value and grayscale voltage correction value are obtained, and the grayscale voltage correction value is used for Gamma correction, which can avoid the problem of inaccurate Gamma correction results caused by unstable brightness of the display device, improve the accuracy of the Gamma correction results, and improve the display effect of the display device at the first refresh rate. For example, the problem of heterochromaticity when displaying grayscale gradient pictures at the first refresh rate is improved, and the problem of inability to capture optical data due to pixel leakage is improved.

[0077] Moreover, at a higher second refresh rate, matching brightness values ​​of each grayscale image of the display device can be obtained, so that the optical data can be better captured, thereby obtaining the brightness values ​​of each grayscale image more quickly, thereby saving adjustment time and shortening Gamma correction time.

[0078] Moreover, the second adjustment module 32 obtains the actual brightness value of each grayscale image of the display device at a higher second refresh rate, and can better capture optical data, thereby obtaining the actual brightness value of each grayscale image more quickly, thereby saving adjustment time and shortening Gamma correction time.

[0079] In some embodiments of the present invention, the first refresh rate is the refresh rate in the first display mode, and the first display mode includes the AOD display mode; the second refresh rate is the refresh rate in the second display mode, and the second display mode includes the normal display mode; the target grayscale image is the maximum grayscale image.

[0080] In some embodiments of the present invention, the first processing module 33 obtains other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and the target Gamma curve, including:

[0081] According to the matching brightness value and the target Gamma curve, the matching brightness values ​​of the grayscale images of multiple preset binding points are calculated;

[0082] At the second refresh rate, the brightness value of the display device is adjusted to each matching brightness value in sequence to obtain grayscale voltage correction values ​​of multiple preset binding point grayscale images;

[0083] Based on the grayscale voltage correction values ​​of multiple preset binding point grayscale pictures and the target grayscale voltage correction value, the grayscale voltage correction values ​​of the remaining grayscale pictures are calculated; the other grayscale voltage correction values ​​include the grayscale voltage correction values ​​of multiple preset binding point grayscale pictures and the grayscale voltage correction values ​​of the remaining grayscale pictures.

[0084] In some embodiments of the present invention, the second processing module 34 is also used to confirm whether the gamma correction effect of the display device meets the requirements; if so, the target grayscale voltage correction value and other grayscale voltage correction values ​​are used as the grayscale voltage correction values ​​at the first refresh rate; if not, an instruction is sent to the first processing module so that the first processing module obtains other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and the target gamma curve at the second refresh rate.

[0085] As another optional implementation of the disclosure of the present invention, an embodiment of the present invention provides an electronic device, which may be a terminal device or a server device, etc. The electronic device includes:

[0086] A memory for storing at least one set of instructions;

[0087] A processor is used to execute at least one set of instructions to perform the gamma correction method provided in any of the above embodiments.

[0088] As another optional implementation of the contents disclosed in the present invention, an embodiment of the present invention provides a readable storage medium, which stores at least one set of instructions, and the at least one set of instructions is used to enable a processor to execute the gamma correction method provided in any of the above embodiments.

[0089] The readable storage media of the embodiments of the present invention include permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. The information can be host-readable instructions, data structures, modules of programs, or other data. Examples of the host's storage media include, but are not limited to, phase change memory (PAM), static random access memory (SAM), dynamic random access memory (DAM), other types of random access memory (AM), read-only memory (OM), electrically erasable programmable read-only memory (EEPOM), flash memory or other memory technology, read-only compact disk read-only memory (CD-OM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0090] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts refer to the method part description. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown in this article, but will comply with the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A gamma correction method, characterized in that: include: At a first refresh rate, adjusting the brightness value of a target grayscale image of a display device to a target brightness value, and obtaining a target grayscale voltage correction value corresponding to the target grayscale image; Adjusting the refresh rate of the display device to a second refresh rate, and obtaining a matching brightness value of a target grayscale picture of the display device under the target grayscale voltage correction value; wherein the second refresh rate is greater than the first refresh rate; At the second refresh rate, based on the matching brightness value and the target Gamma curve, other grayscale voltage correction values ​​corresponding to other grayscale images are obtained; The target grayscale voltage correction value and the other grayscale voltage correction values ​​are used as respective grayscale voltage correction values ​​at the first refresh rate to perform gamma correction on the display device.

2. The gamma correction method according to claim 1, characterized in that: The obtaining of other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and the target Gamma curve includes: According to the matching brightness value and the target Gamma curve, the matching brightness values ​​of the grayscale images of the plurality of preset binding points are calculated; At the second refresh rate, the brightness value of the display device is adjusted to each of the matching brightness values ​​in sequence, and the grayscale voltage correction values ​​of the plurality of preset binding point grayscale images are obtained; Based on the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures and the target grayscale voltage correction value, the grayscale voltage correction values ​​of the remaining grayscale pictures are calculated; the other grayscale voltage correction values ​​include the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures and the grayscale voltage correction values ​​of the remaining grayscale pictures.

3. The gamma correction method according to claim 1, characterized in that: The first refresh rate is the refresh rate in the first display mode, and the first display mode includes the AOD display mode; the second refresh rate is the refresh rate in the second display mode, and the second display mode includes the normal display mode; the target grayscale picture is the maximum grayscale picture.

4. The gamma correction method according to claim 1, characterized in that: Also includes: Confirm whether the gamma correction effect of the display device meets the requirements; If yes, burning the target grayscale voltage correction value and the other grayscale voltage correction values ​​as the respective grayscale voltage correction values ​​at the first refresh rate; If not, other grayscale voltage correction values ​​corresponding to other grayscale images are obtained again at the second refresh rate based on the matching brightness value and the target Gamma curve.

5. A gamma correction device, characterized in that: include: A first adjustment module, configured to adjust the brightness value of a target grayscale image of a display device to a target brightness value at a first refresh rate, and obtain a target grayscale voltage correction value corresponding to the target grayscale image; A second adjustment module, configured to adjust the refresh rate of the display device to a second refresh rate, and obtain a matching brightness value of a target grayscale picture of the display device under the target grayscale voltage correction value; The second refresh rate is greater than the first refresh rate; A first processing module, configured to obtain other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and a target gamma curve at the second refresh rate; The second processing module is used to use the target grayscale voltage correction value and the other grayscale voltage correction values ​​as respective grayscale voltage correction values ​​at the first refresh rate to perform gamma correction on the display device.

6. The gamma correction device according to claim 5, characterized in that: The first processing module obtains other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and the target Gamma curve, including: Calculating matching brightness values ​​of multiple preset binding point grayscale images according to the matching brightness value and the target Gamma curve; At the second refresh rate, the brightness value of the display device is adjusted to each of the matching brightness values ​​in sequence, and the grayscale voltage correction values ​​of the plurality of preset binding point grayscale images are obtained; Based on the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures and the target grayscale voltage correction value, the grayscale voltage correction values ​​of the remaining grayscale pictures are calculated; the other grayscale voltage correction values ​​include the grayscale voltage correction values ​​of the multiple preset binding point grayscale pictures and the grayscale voltage correction values ​​of the remaining grayscale pictures.

7. The gamma correction device according to claim 5, characterized in that: The first refresh rate is the refresh rate in the first display mode, and the first display mode includes the AOD display mode; the second refresh rate is the refresh rate in the second display mode, and the second display mode includes the normal display mode; the target grayscale picture is the maximum grayscale picture.

8. The gamma correction device according to claim 5, characterized in that: The second processing module is also used to confirm whether the gamma correction effect of the display device meets the requirements; if so, the target grayscale voltage correction value and the other grayscale voltage correction values ​​are used as the grayscale voltage correction values ​​at the first refresh rate; if not, an instruction is sent to the first processing module so that the first processing module obtains other grayscale voltage correction values ​​corresponding to other grayscale images based on the matching brightness value and the target gamma curve at the second refresh rate.

9. An electronic device, characterized in that: include: A memory for storing at least one set of instructions; A processor, configured to execute the at least one set of instructions to perform the gamma correction method as described in any one of claims 1 to 4.

10. A readable storage medium, characterized in that: The readable storage medium stores at least one set of instructions, and the at least one set of instructions is used to enable a processor to execute the gamma correction method as described in any one of claims 1 to 4.

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