CN112419950B - Display difference judging method and system of display device and display device - Google Patents
Display difference judging method and system of display device and display device Download PDFInfo
- Publication number
- CN112419950B CN112419950B CN202011483375.XA CN202011483375A CN112419950B CN 112419950 B CN112419950 B CN 112419950B CN 202011483375 A CN202011483375 A CN 202011483375A CN 112419950 B CN112419950 B CN 112419950B
- Authority
- CN
- China
- Prior art keywords
- display
- under
- brightness
- image pickup
- screen image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
-
- 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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The embodiment of the invention relates to the technical field of image display, and discloses a display difference judgment method and a display difference judgment system of a display device and the display device, wherein the display difference judgment method comprises the following steps: acquiring a plurality of first display brightnesses of the shooting areas under different gray scales and a plurality of second display brightnesses of the shooting areas under a non-screen; obtaining a plurality of first characteristic parameters for representing the display effect of the under-screen camera area according to the plurality of first display brightness; obtaining a plurality of second characteristic parameters for representing the display effect of the non-under-screen camera area according to the plurality of second display brightness; and calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters under the same gray scale, and judging the display difference between the under-screen image pickup area and the non-under-screen image pickup area according to the plurality of difference values. The display difference judging method and system of the display device and the display device provided by the invention can reduce the display difference judging difficulty of the display device and improve the accuracy of the display difference judgment.
Description
Technical Field
The embodiment of the invention relates to the technical field of image display, in particular to a display difference judgment method and system of a display device and the display device.
Background
An OLED (Organic Light-Emitting Diode) is called an Organic electroluminescent Diode. The OLED display technology has many advantages of all solid state, active light emission, high contrast, ultra-thin, low power consumption, fast effect speed, wide working range, easy realization of flexible display and 3D display, etc., so that it is currently applied to many display devices, such as televisions and mobile devices. The current OLED display device has the problem of display difference in brightness, and the difference of brightness display is mainly caused by the fact that the transmittance of an under-screen image pickup area is different from the transmittance of a non-under-screen image pickup area.
In the prior art, a method for determining the display brightness difference of the OLED display device needs to be improved, and therefore, a new method for determining the display brightness difference of the display device needs to be provided to solve the above problems.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a display difference determination method and system for a display device, and a display device, which can reduce the difficulty of determining the display difference of the display device and improve the accuracy of determining the display difference.
In order to solve the above technical problem, an embodiment of the present invention provides a display difference determination method for a display device, where the display device includes an off-screen image capture area and a non-off-screen image capture area, and the display difference determination method includes:
acquiring a plurality of first display brightnesses of the under-screen image pickup area under different gray scales and a plurality of second display brightnesses of the non-under-screen image pickup area, wherein each gray scale corresponds to one first display brightness and one second display brightness; obtaining a plurality of first characteristic parameters for representing the display effect of the under-screen camera shooting area according to the plurality of first display brightness; obtaining a plurality of second characteristic parameters for representing the display effect of the non-under-screen camera area according to the plurality of second display brightness, wherein the first display brightness corresponds to the first characteristic parameters one by one, and the second display brightness corresponds to the second characteristic parameters one by one; and calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters under the same gray scale, and judging the display difference of the under-screen image pickup area and the non-under-screen image pickup area according to the plurality of difference values.
In addition, the display device is provided with a light sensing device, and the acquiring of the plurality of first display brightness of the under-screen image pickup area under different gray scales comprises the following steps: acquiring a brightness curing curve of the display device, wherein the brightness curing curve is used for representing the corresponding relation between the display brightness of the under-screen image pickup area and the brightness received by a light sensing device of the display device; and obtaining a plurality of third display brightness received by the light sensing device under different gray scales, and obtaining the plurality of first display brightness according to the plurality of third display brightness and the brightness curing curve.
In addition, the acquiring a luminance curing curve of the display device includes: adjusting the gray scale of the under-screen image pickup area according to a preset adjusting program to obtain the theoretical display brightness of the under-screen image pickup area when the under-screen image pickup area is at different gray scales; acquiring a plurality of induction brightnesses received by the light sensing device when the under-screen camera shooting area has different theoretical display brightnesses, wherein each theoretical display brightness corresponds to one induction brightness; and establishing a rectangular coordinate system, taking the theoretical display brightness as a vertical coordinate, and taking the induction brightness corresponding to the theoretical display brightness as a horizontal coordinate to obtain the brightness curing curve.
In addition, before obtaining a plurality of sensed luminances received by the light sensing device, the method further comprises: adjusting the display brightness of the non-under-screen image pickup area to be the lowest brightness; when the area of making a video recording under the screen has different theoretical display luminance, a plurality of response luminance that light sense device received includes: and acquiring a plurality of induction brightnesses received by the light sensing device when the preset gray scale and the lower screen image pickup area are at different theoretical display brightnesses in a darkroom.
In addition, acquiring a plurality of second display luminances of the non-under-screen image capture region includes: and acquiring a plurality of second display brightness of the central point of the display device.
In addition, the obtaining, according to the plurality of first display luminances, a plurality of first characteristic parameters for characterizing a display effect of the image capture area under the screen includes: obtaining the first characteristic parameter according to the following formula:
wherein, the L1 i A first display brightness of the under-screen image pickup region at the ith gray scale, L1 255 The first display brightness of the under-screen image pickup region at the 255 th gray scale is obtained, and the Gamma1 is a first characteristic parameter of the under-screen image pickup region at the ith gray scale.
In addition, the obtaining, according to the plurality of second display luminances, a plurality of second characteristic parameters for characterizing a display effect of the non-under-screen image capture region includes: according to the followingThe second characteristic parameter is obtained by the following formula:
wherein, the L2 i A second display brightness L2 of the non-under-screen image pickup region at the ith gray scale 255 The second display brightness of the non-under-screen image pickup region under the 255 th gray scale is obtained, and the Gamma2 is a second characteristic parameter of the non-under-screen image pickup region under the ith gray scale.
In addition, before calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters at the same gray level, the method further comprises:
removing first characteristic parameters of the plurality of first characteristic parameters, the difference values of which with other first characteristic parameters are out of a preset range, to obtain M standard first characteristic parameters; removing second characteristic parameters of the plurality of second characteristic parameters, the difference values of which with other second characteristic parameters are out of a preset range, to obtain M standard second characteristic parameters, wherein M is an integer greater than 1;
the calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters under the same gray scale, and determining the display difference between the on-screen image pickup area and the non-on-screen image pickup area according to the plurality of difference values includes: calculating M difference values of the M standard first characteristic parameters and the M standard second characteristic parameters under the same gray scale; and judging the display difference between the under-screen image pickup area and the non-under-screen image pickup area according to the difference value with the largest value in the M difference values.
An embodiment of the present invention further provides a display difference determination system of a display device, where the display device includes an off-screen image capture area and a non-off-screen image capture area, and the display difference determination system includes: an acquisition device, a processing device and a computing device;
the acquisition device is used for acquiring a plurality of first display brightnesses of the under-screen image pickup area under different gray scales and a plurality of second display brightnesses of the non-under-screen image pickup area, wherein each gray scale corresponds to one first display brightness and one second display brightness; the processing device is used for obtaining a plurality of first characteristic parameters for representing the display effect of the under-screen camera shooting area according to the plurality of first display brightness; obtaining a plurality of second characteristic parameters for representing the display effect of the non-under-screen camera area according to the plurality of second display brightness, wherein the first display brightness corresponds to the first characteristic parameters one by one, and the second display brightness corresponds to the second characteristic parameters one by one; the calculating device is used for calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters under the same gray scale, and judging the display difference of the under-screen shooting area and the non-under-screen shooting area according to the plurality of difference values.
An embodiment of the present invention also provides a display device, including: the screen comprises a screen body and at least one processor arranged in the screen body; and a memory communicatively coupled to the at least one processor; the memory is used for storing a plurality of first characteristic parameters and a plurality of second characteristic parameters, wherein the plurality of first characteristic parameters are obtained according to a plurality of first display brightnesses of the screen lower shooting area of the display device at different gray scales, and the plurality of second characteristic parameters are obtained according to a plurality of second display brightnesses of the non-screen lower shooting area of the display device at different gray scales; the processor is used for judging the display difference of the under-screen shooting area and the non-under-screen shooting area according to the plurality of first characteristic parameters and the plurality of second characteristic parameters stored in the memory
Compared with the prior art, the embodiment of the invention has at least the following advantages:
by acquiring the first display brightness of the under-screen image pickup area and the second display brightness of the non-under-screen image pickup area under different gray scales, the first characteristic parameter of the under-screen image pickup area and the second characteristic parameter of the non-under-screen image pickup area under different gray scales can be obtained, so that difference values under different gray scales can be obtained, the display difference between the under-screen image pickup area and the non-under-screen image pickup area can be accurately judged according to the difference values under different gray scales, and the accuracy of judging the display difference is improved; in addition, the first characteristic parameter is calculated according to the first display brightness, and the second characteristic parameter is calculated according to the second display brightness, so that the display difference between the under-screen image pickup area and the non-under-screen image pickup area can be judged through the single dimension of brightness, and the difficulty in judging the display difference of the display device is reduced.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings which correspond to and are not to be construed as limiting the embodiments, in which elements having the same reference numeral designations represent like elements throughout, and in which the drawings are not to be construed as limiting in scale unless otherwise specified.
Fig. 1 is a flowchart of a display difference determination method of a display device according to a first embodiment of the present invention;
FIG. 2 is a gray scale value versus characteristic parameter curve according to a first embodiment of the present invention;
FIG. 3 is another gray scale value versus characteristic parameter curve according to the first embodiment of the present invention;
fig. 4 is a flowchart of a display difference determination method of a display apparatus according to a second embodiment of the present invention;
FIG. 5 is a luminance cure curve according to a second embodiment of the present invention;
fig. 6 is a flowchart of a display difference determination method of a display apparatus according to a third embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating a display difference determination system of a display device according to a fourth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a display device according to a fifth embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
To make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
A first embodiment of the present invention relates to a display difference determination method for a display device, where the display device includes an off-screen image capture area and a non-off-screen image capture area, and a specific flow of the display difference determination method is shown in fig. 1, and includes the following steps:
s101: and acquiring a plurality of first display brightnesses of the image pickup areas under different gray scales and a plurality of second display brightnesses of the image pickup areas without the gray scales.
Specifically, as we see, a point on an image displayed on a display panel is generally composed of three sub-pixels of red, green and blue, a light source behind each sub-pixel can display different brightness levels, and the gray scale represents different levels of brightness from the lightest level to the darkest level, and the more levels, the more displayed image effect is thinner. For example, 256 luminance levels are referred to as 256 gray levels, and the color change of each dot on the image represents the change in gray level by the three sub-pixels constituting this dot. Therefore, the off-screen image pickup region and the non-off-screen image pickup region have different display luminance at different gray scales.
Preferably, in addition to acquiring 256 first display luminances and 256 second display luminances at gray levels of 0 to 255, the present embodiment may acquire a first display luminance at an equal gray level interval of the image capture region under the screen and a second display luminance at an equal gray level interval of the image capture region not under the screen. By the method, the display brightness of the under-screen image pickup area and the display brightness of the non-under-screen image pickup area under each gray scale do not need to be acquired, and the workload of subsequent calculation of the characteristic parameters is reduced under the condition that the display difference judgment of the display device is ensured, so that the display difference judgment method provided by the embodiment is simpler. It is to be understood that the display brightness acquiring manner in this embodiment is not limited to acquiring the display brightness of the under-screen image capturing area and the non-under-screen image capturing area at equal gray scale intervals, and may also acquire the display brightness at unequal intervals (for example, acquiring the areas to be compensated of the 2 nd, 40 th, 80 th, 150 th, and 224 th gray scales in 256 gray scales), and the same technical effect may be achieved.
Preferably, the acquiring of the first display brightness and the second display brightness of the off-screen image pickup area and the non-off-screen image pickup area at the equal gray scale interval specifically includes: first display luminance and second display luminance at 32 th, 64 th, 96 th, 128 th, 160 th, 192 th, and 224 th gray levels among the 256 gray levels are acquired. That is to say, the areas to be compensated with the equal gray scale intervals are obtained for the display panels with the 32 th to 224 th gray scales in the 256-level gray scales, and by this way, the workload of subsequently calculating the first characteristic parameter and the second characteristic parameter is further reduced, so that the display difference determination method provided by the embodiment is simpler. It is understood that the display brightness of the 32 th to 224 th gray levels is only an exemplary manner, and the same technical effects can be achieved by obtaining the display brightness of the 6 th to 220 th gray levels, and the present embodiment is not limited thereto.
S102: obtaining a plurality of first characteristic parameters for representing the display effect of the camera shooting area under the screen according to the plurality of first display brightness; and obtaining a plurality of second characteristic parameters for representing the display effect of the non-under-screen image pickup area according to the plurality of second display brightness.
Specifically, the first characteristic parameter may be calculated by the following formula:
wherein, the L1 i A first display brightness of the under-screen image pickup region at the ith gray scale, L1 255 The first display brightness of the under-screen image pickup region at the 255 th gray scale is obtained, and the Gamma1 is a first characteristic parameter of the under-screen image pickup region at the ith gray scale. It can be understood that L1 i 、L1 255 And i are known numbers, so the value of Gamma1 can be obtained through the above formula, and for easy understanding, the following illustrates how to calculate Gamma 1:
assuming that i takes on the value 56, L1 56 That is, the display brightness of the 56 th gray scale lower image pickup region is obtained, and then the display brightness L1 of the 255 th gray scale lower image pickup region is obtained 255 And calculating to obtain the value of the first characteristic parameter (Gamma 1) of the 56 th gray-scale lower screen shooting area.
The present embodiment may calculate the second characteristic parameter by the following formula:
wherein, the L2 i A second display brightness L2 of the non-under-screen image pickup region at the ith gray scale 255 The second display brightness of the non-under-screen image pickup region at the 255 th gray scale is obtained, and the Gamma2 is a second characteristic parameter of the non-under-screen image pickup region at the ith gray scale. It is understood that L2 i 、L2 255 And i are known numbers, so the value of Gamma2 can be obtained through the above formula, and for easy understanding, how to calculate Gamma2 is illustrated below:
assume that i takes on the value 105, L2 105 That is, the display brightness of the non-under-screen image pickup region at the 105 th gray scale is obtained, and then the display brightness L2 of the non-under-screen image pickup region at the 255 th gray scale is obtained 255 The value of the second characteristic parameter (Gamma 1) of the non-screen lower image pickup area at the 105 th gray scale can be calculated.
S103: and calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters under the same gray scale, and judging the display difference between the under-screen image pickup area and the non-under-screen image pickup area according to the plurality of difference values.
Specifically, in order to further improve the accuracy of the display difference determination in this embodiment, the first characteristic parameters, which have a difference value with other first characteristic parameters outside a preset range, are removed from the plurality of first characteristic parameters before calculating the difference value, so as to obtain M standard first characteristic parameters; and removing second characteristic parameters of the plurality of second characteristic parameters, the difference values of which with other second characteristic parameters are out of a preset range, to obtain M standard second characteristic parameters, wherein M is an integer greater than 1.
More specifically, as shown in fig. 2, assuming that 256 first characteristic parameters and 256 second characteristic parameters under the gray levels of 0 to 255 are obtained, a rectangular coordinate system may be established to obtain a relationship curve S1 of the gray level value-the first characteristic parameter and a relationship curve S2 of the gray level value-the second characteristic parameter, and it can be seen from fig. 3 that the difference between the first characteristic parameter and the second characteristic parameter under the gray levels of 0 to 5 and 221 to 225 and the first characteristic parameter and the second characteristic parameter of other gray levels is too large, so that the first characteristic parameter and the second characteristic parameter under the gray levels of 0 to 5 and 221 to 225 are removed to obtain a relationship curve S3 of the gray level value-the first characteristic parameter and a relationship curve S4 of the gray level value-the second characteristic parameter as shown in fig. 3.
It should be noted that in this embodiment, the difference between the first characteristic parameter and the second characteristic parameter at 6 to 220 gray levels is calculated, and the maximum absolute value of the difference is taken to represent the luminance display difference between the under-screen camera shooting area and the non-under-screen camera shooting area, so as to evaluate the luminance display deviation of the under-screen camera mobile phone according to the value, thereby reducing the difficulty of determining the display difference of the display device and improving the accuracy of determining the display difference.
Compared with the prior art, the embodiment of the invention can obtain the first characteristic parameter of the under-screen image pickup area and the second characteristic parameter of the non-under-screen image pickup area under different gray scales by obtaining the first display brightness of the under-screen image pickup area and the second display brightness of the non-under-screen image pickup area under different gray scales, thereby obtaining the difference value under different gray scales, further accurately judging the display difference of the under-screen image pickup area and the non-under-screen image pickup area according to the difference value under different gray scales, and improving the accuracy of the judgment of the display difference; in addition, the first characteristic parameter is calculated according to the first display brightness, and the second characteristic parameter is calculated according to the second display brightness, so that the display difference between the under-screen image pickup area and the non-under-screen image pickup area can be judged through the single dimension of brightness, and the difficulty in judging the display difference of the display device is reduced.
A second embodiment of the present invention relates to a display difference determination method of a display device, and is an explanation of the first embodiment, specifically explaining: how to obtain a plurality of first display brightness of the under-screen image pickup area under different gray scales and a plurality of second display brightness of the non-under-screen image pickup area.
The specific process of this embodiment is shown in fig. 4, and includes:
s201: and acquiring a brightness curing curve of the display device.
Specifically, the luminance curing curve can be obtained as follows: adjusting the gray scale of the under-screen image pickup area according to a preset adjusting program to obtain the theoretical display brightness of the under-screen image pickup area when the under-screen image pickup area is at different gray scales; acquiring a plurality of induction brightnesses received by the light sensing device when the under-screen camera shooting area has different theoretical display brightnesses, wherein each theoretical display brightness corresponds to one induction brightness; and establishing a rectangular coordinate system, taking the theoretical display brightness as a vertical coordinate, and taking the induction brightness corresponding to the theoretical display brightness as a horizontal coordinate to obtain the brightness curing curve.
More specifically, as shown in fig. 5, since the OLED light emitting layer may leak light to a portion of the back of the screen when emitting light, the luminance of the display in the image pickup area under the screen is different, and the luminance received by the light sensing device is also different. The gray scale of the under-screen image pickup region is adjusted by the adjusting program (it can be understood that the display brightness of the under-screen image pickup region changes along with the change of the gray scale of the under-screen image pickup region, that is, the gray scales of the under-screen image pickup region are different, and the display brightness of the corresponding under-screen image pickup region is also different, and when the gray scale of the under-screen image pickup region is obtained by the adjusting program, the theoretical display brightness of the under-screen image pickup region can also be obtained together), and the receiving brightness of the corresponding light sensing device when the light sensing device displays brightness in different theoretical display brightness in the under-screen image pickup region is recorded, so as to form the brightness curing curve shown in fig. 5.
S202: and acquiring a plurality of third display brightness received by the light sensing device under different gray scales.
S203: and obtaining a plurality of first display brightnesses according to the plurality of third display brightnesses and the brightness curing curves.
In step S202 to step S203, specifically, the actual display brightness (i.e., the first display brightness) of the display area under the screen is inversely deduced through the third display brightness received by the optical sensing device, the operation method is simple, and the difficulty of determining the display difference of the display device is further reduced.
S204: a plurality of second display luminances of a center point of the display device are acquired.
Specifically, because the display characteristics of the current display device are such that the display brightness at the center point of the display device can best represent the average display brightness of the non-under-screen image capture region, the accuracy of the display difference determination method can be further improved by obtaining a plurality of second display brightnesses at the center point of the display device.
More specifically, in this embodiment, the display brightness of the non-off-screen image capture region may be determined by the color analyzer, and if the shape of the display device is a regular graph, the central point of the display device is the geometric center of the regular graph; if the display device is in the shape of an irregular figure, the center of the display device can be determined by using a suspension method (two points are found on the display device, the display device is suspended by a string, and the intersection point of the extension lines of the string is the geometric center of the display device when the display device is suspended twice).
S205: obtaining a plurality of first characteristic parameters for representing the display effect of the under-screen camera area according to the plurality of first display brightness; and obtaining a plurality of second characteristic parameters for representing the display effect of the non-under-screen image pickup area according to the plurality of second display brightness.
S206: and calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters under the same gray scale, and judging the display difference between the under-screen image pickup area and the non-under-screen image pickup area according to the plurality of difference values.
Steps S205 to S206 of the present embodiment are similar to steps S102 to S103 of the first embodiment, and are not repeated here to avoid repetition.
Compared with the prior art, the embodiment of the invention can obtain the first characteristic parameter of the under-screen image pickup area and the second characteristic parameter of the non-under-screen image pickup area under different gray scales by obtaining the first display brightness of the under-screen image pickup area and the second display brightness of the non-under-screen image pickup area under different gray scales, thereby obtaining the difference value under different gray scales, further accurately judging the display difference of the under-screen image pickup area and the non-under-screen image pickup area according to the difference value under different gray scales, and improving the accuracy of the judgment of the display difference; in addition, the first characteristic parameter is calculated according to the first display brightness, and the second characteristic parameter is calculated according to the second display brightness, so that the display difference between the under-screen image pickup area and the non-under-screen image pickup area can be judged through the single dimension of brightness, and the difficulty in judging the display difference of the display device is reduced.
The third embodiment of the present invention relates to a method for determining a display difference of a display device, and is a further improvement on the basis of the second embodiment, and the specific improvement is that: in this embodiment, the display brightness of the non-off-screen image pickup region is also adjusted to the lowest brightness, and the display difference determination of the display device is performed in a dark room. In this way, the accuracy of the display difference determination method of the display device can be further improved.
The specific process of this embodiment is shown in fig. 6, and includes:
s301: and adjusting the display brightness of the non-screen lower image pick-up area to be the lowest brightness, and acquiring a brightness curing curve of the display device in a darkroom.
S302: and acquiring a plurality of third display brightness received by the light sensing device under different gray scales.
S303: and obtaining a plurality of first display luminances according to the plurality of third display luminances and the luminance curing curves.
S304: and acquiring a plurality of second display brightnesses of the central point of the non-under-screen image pickup area.
S305: obtaining a plurality of first characteristic parameters for representing the display effect of the camera shooting area under the screen according to the plurality of first display brightness; and obtaining a plurality of second characteristic parameters for representing the display effect of the non-under-screen camera area according to the plurality of second display brightness.
S306: and calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters under the same gray scale, and judging the display difference between the under-screen image pickup area and the non-under-screen image pickup area according to the plurality of difference values.
Steps S302 to S306 of the present embodiment are similar to steps S202 to S206 of the second embodiment, and are not repeated herein to avoid repetition.
Compared with the prior art, the embodiment of the invention can obtain the first characteristic parameter of the under-screen image pickup area and the second characteristic parameter of the non-under-screen image pickup area under different gray scales by obtaining the first display brightness of the under-screen image pickup area and the second display brightness of the non-under-screen image pickup area under different gray scales, thereby obtaining the difference value under different gray scales, further accurately judging the display difference of the under-screen image pickup area and the non-under-screen image pickup area according to the difference value under different gray scales, and improving the accuracy of the judgment of the display difference; in addition, the first characteristic parameter is calculated according to the first display brightness, and the second characteristic parameter is calculated according to the second display brightness, so that the display difference between the under-screen image pickup area and the non-under-screen image pickup area can be judged through the single dimension of brightness, and the difficulty in judging the display difference of the display device is reduced.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
A fourth embodiment of the present invention relates to a display difference determination system for a display device, where the display device includes an off-screen image capture region and a non-off-screen image capture region, and a schematic structural diagram of the display difference determination system in this embodiment is shown in fig. 7, and specifically includes:
an acquisition device 1, a processing device 2 and a calculation device 3; the acquisition device 1 is used for acquiring a plurality of first display brightnesses of the under-screen image pickup area under different gray scales and a plurality of second display brightnesses of the non-under-screen image pickup area, wherein each gray scale corresponds to one first display brightness and one second display brightness; the processing device 2 is configured to obtain a plurality of first characteristic parameters for characterizing a display effect of the under-screen image capture area according to the plurality of first display luminances; obtaining a plurality of second characteristic parameters for representing the display effect of the non-under-screen camera area according to the plurality of second display brightness, wherein the first display brightness corresponds to the first characteristic parameters one by one, and the second display brightness corresponds to the second characteristic parameters one by one; the calculating device 3 is configured to calculate a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters under the same gray scale, and determine a display difference between the under-screen image capturing area and the non-under-screen image capturing area according to the plurality of difference values.
It should be understood that the present embodiment is a system embodiment related to the first, second and third embodiments, and the present embodiment can be implemented in cooperation with the first, second and third embodiments. The related technical details mentioned in the first embodiment, the second embodiment, and the third embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related technical details mentioned in the present embodiment can also be applied to the first embodiment, the second embodiment, and the third embodiment.
A fifth embodiment of the present invention relates to a display device, as shown in fig. 8, including: the screen body 11, at least one processor 12 arranged in the screen body 11; and a memory 13 communicatively coupled to the at least one processor 12; the memory 13 is configured to store a plurality of first characteristic parameters and a plurality of second characteristic parameters, where the plurality of first characteristic parameters are obtained according to a plurality of first display luminances of the off-screen image capturing area of the display device at different gray scales, and the plurality of second characteristic parameters are obtained according to a plurality of second display luminances of the non-off-screen image capturing area of the display device at different gray scales; the processor 12 is configured to determine a display difference between the off-screen image pickup region and the non-off-screen image pickup region based on the plurality of first characteristic parameters and the plurality of second characteristic parameters stored in the memory 13.
For easy understanding, the design process and the use process of the display device in this embodiment are specifically described:
before the display device leaves the factory, a brightness curing curve is obtained in the manner described in the foregoing embodiment, and the theoretical display brightness of the image capture area under the screen and the corresponding induction brightness of the display device can be obtained from the brightness curing curve, and assuming that the theoretical display brightness of the image capture area under the screen is 256 (from 0 to 255 gray scales, and each gray scale corresponds to a different theoretical display brightness), the induction brightness corresponding to the theoretical display brightness is also 256 (each theoretical display brightness under each gray scale corresponds to one induction brightness), the processor 12 calculates a first characteristic parameter (256 first characteristic parameters can be obtained in total) according to the theoretical display brightness, and calculates a second characteristic parameter (256 second characteristic parameters corresponding to the first characteristic parameters can be obtained in total) according to the induction brightness, and the memory 13 stores the 256 first characteristic parameters and the 256 second characteristic parameters, and a corresponding relationship between the first characteristic parameters and the second characteristic parameters. After the display device leaves the factory, if a user wants to inquire the display difference of the display device under different gray scales (the user can adjust the gray scale of the display device according to the own function of the display device), the display device can automatically acquire a second characteristic parameter of the photosensitive device under the gray scale by only adjusting the gray scale of the display device to the gray scale to be tested, the memory 13 can find a corresponding pre-stored first characteristic parameter through the second characteristic parameter, the processor 12 can judge the display difference of the on-screen image pickup area and the non-on-screen image pickup area according to the first characteristic parameter and the second characteristic parameter, and display the judgment result on the display screen of the display device.
It should be noted that if the user wants to know the maximum display difference of the display device, the processor 12 of the display device automatically performs a judgment according to all the data stored in the memory 13 to obtain the maximum display difference of the display device. If the difference value between the first characteristic parameter and the second characteristic parameter under the gray scales of 0 to 255 is calculated, the maximum absolute value of the difference value is taken to represent the brightness display difference value between the under-screen image pick-up area and the non-under-screen image pick-up area, and the value is taken as the maximum display difference of the display device.
It should be understood that the present embodiment is related to the first, second and third embodiments, and can be implemented in cooperation with the first, second and third embodiments. The related technical details mentioned in the first, second and third embodiments are still valid in this embodiment, and are not described herein again to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment, the second embodiment, and the third embodiment.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments for practicing the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (8)
1. A display difference determination method of a display device, the display device including an off-screen imaging region and a non-off-screen imaging region, the display difference determination method comprising:
acquiring a plurality of first display brightnesses of the under-screen image pickup area under different gray scales and a plurality of second display brightnesses of the non-under-screen image pickup area, wherein each gray scale corresponds to one first display brightness and one second display brightness;
obtaining a plurality of first characteristic parameters for representing the display effect of the under-screen camera shooting area according to the plurality of first display brightness; obtaining a plurality of second characteristic parameters for representing the display effect of the non-under-screen camera area according to the plurality of second display brightness, wherein the first display brightness corresponds to the first characteristic parameters one by one, and the second display brightness corresponds to the second characteristic parameters one by one;
calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters under the same gray scale, and judging the display difference of the under-screen image pickup area and the non-under-screen image pickup area according to the plurality of difference values;
the display device is provided with a light sensing device, and the method for acquiring a plurality of first display brightness of the under-screen camera shooting area under different gray scales comprises the following steps:
acquiring a brightness curing curve of the display device, wherein the brightness curing curve is used for representing the corresponding relation between the theoretical display brightness of the under-screen image pickup area and the induction brightness received by a light sensing device of the display device;
obtaining a plurality of third display brightnesses received by the light sensing device under different gray scales, and obtaining a plurality of first display brightnesses according to the third display brightnesses and the brightness curing curve;
the acquiring of the brightness curing curve of the display device includes:
adjusting the gray scale of the under-screen image pickup area according to a preset adjusting program to obtain theoretical display brightness of the under-screen image pickup area when the under-screen image pickup area is at different gray scales;
acquiring a plurality of induction brightnesses received by the light sensing device when the camera shooting area under the screen has different theoretical display brightnesses, wherein each theoretical display brightness corresponds to one induction brightness;
and establishing a rectangular coordinate system, and taking the theoretical display brightness as a vertical coordinate and the induction brightness corresponding to the theoretical display brightness as a horizontal coordinate to obtain the brightness curing curve.
2. The method for determining display differences of a display device according to claim 1, further comprising, before obtaining the plurality of sensed luminances received by the light sensing devices:
adjusting the display brightness of the non-under-screen image pickup area to be the lowest brightness;
when the area of making a video recording under the screen has different theoretical display luminance, a plurality of response luminance that light sense device received includes:
and when the lower-screen shooting area has different theoretical display brightness, the light sensing device receives a plurality of sensing brightness.
3. The method for determining display variation of a display device according to claim 1, wherein acquiring a plurality of second display luminances of the non-off-screen imaging region includes:
and acquiring a plurality of second display brightness of the central point of the display device.
4. The method for determining the display difference of the display device according to claim 1, wherein the obtaining a plurality of first characteristic parameters for representing the display effect of the off-screen image pickup region according to a plurality of the first display luminances comprises: obtaining the first characteristic parameter according to the following formula:
5. The method for determining a display difference of a display device according to claim 1, wherein the obtaining a plurality of second characteristic parameters for representing a display effect of the non-off-screen image pickup region based on a plurality of second display luminances includes: obtaining the second characteristic parameter according to the following formula:
6. The method for determining display differences of a display device according to any one of claims 1 to 5, further comprising, before calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters at the same gray level:
removing first characteristic parameters of the plurality of first characteristic parameters, the difference values of which with other first characteristic parameters are out of a preset range, to obtain M standard first characteristic parameters; removing second characteristic parameters of the plurality of second characteristic parameters, the difference values of which with other second characteristic parameters are out of a preset range, to obtain M standard second characteristic parameters, wherein M is an integer greater than 1;
the calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters under the same gray scale, and determining the display difference between the on-screen image pickup area and the non-on-screen image pickup area according to the plurality of difference values includes:
calculating M difference values of the M standard first characteristic parameters and the M standard second characteristic parameters under the same gray scale;
and judging the display difference between the under-screen image pickup area and the non-under-screen image pickup area according to the difference value with the largest value in the M difference values.
7. A display difference determination system of a display device, the display device including an off-screen imaging region and a non-off-screen imaging region, the display difference determination system comprising: an acquisition device, a processing device and a computing device;
the acquisition device is used for acquiring a plurality of first display brightnesses of the under-screen image pickup area under different gray scales and a plurality of second display brightnesses of the non-under-screen image pickup area, wherein each gray scale corresponds to one first display brightness and one second display brightness;
the processing device is used for obtaining a plurality of first characteristic parameters for representing the display effect of the under-screen camera shooting area according to the plurality of first display brightness; obtaining a plurality of second characteristic parameters for representing the display effect of the non-under-screen camera area according to the plurality of second display brightness, wherein the first display brightness corresponds to the first characteristic parameters one by one, and the second display brightness corresponds to the second characteristic parameters one by one;
the calculating device is used for calculating a plurality of difference values of the plurality of first characteristic parameters and the plurality of second characteristic parameters under the same gray scale, and judging the display difference of the under-screen shooting area and the non-under-screen shooting area according to the plurality of difference values;
the display device is provided with a light sensing device, and the method for acquiring a plurality of first display brightness of the under-screen camera shooting area under different gray scales comprises the following steps:
acquiring a brightness curing curve of the display device, wherein the brightness curing curve is used for representing the corresponding relation between the theoretical display brightness of the under-screen image pickup area and the induction brightness received by a light sensing device of the display device;
obtaining a plurality of third display brightnesses received by the light sensing device under different gray scales, and obtaining a plurality of first display brightnesses according to the third display brightnesses and the brightness curing curve;
the acquiring of the brightness curing curve of the display device includes:
adjusting the gray scale of the under-screen image pickup area according to a preset adjusting program to obtain theoretical display brightness of the under-screen image pickup area when the under-screen image pickup area is at different gray scales;
acquiring a plurality of induction brightnesses received by the light sensing device when the camera shooting area under the screen has different theoretical display brightnesses, wherein each theoretical display brightness corresponds to one induction brightness;
and establishing a rectangular coordinate system, and taking the theoretical display brightness as a longitudinal coordinate and the induction brightness corresponding to the theoretical display brightness as a transverse coordinate to obtain the brightness curing curve.
8. A display device, comprising: the screen comprises a screen body and at least one processor arranged in the screen body; and a memory communicatively coupled to the at least one processor;
the processor is configured to execute the display difference determination method of the display apparatus according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011483375.XA CN112419950B (en) | 2020-12-15 | 2020-12-15 | Display difference judging method and system of display device and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011483375.XA CN112419950B (en) | 2020-12-15 | 2020-12-15 | Display difference judging method and system of display device and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112419950A CN112419950A (en) | 2021-02-26 |
| CN112419950B true CN112419950B (en) | 2022-10-04 |
Family
ID=74776685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011483375.XA Active CN112419950B (en) | 2020-12-15 | 2020-12-15 | Display difference judging method and system of display device and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112419950B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113821185A (en) * | 2021-09-26 | 2021-12-21 | 合肥维信诺科技有限公司 | Method and device for determining display difference of display panel |
| CN114283732B (en) * | 2021-12-29 | 2024-02-23 | Oppo广东移动通信有限公司 | Brightness compensation method and device, storage medium and electronic equipment |
| CN117931113A (en) * | 2024-03-25 | 2024-04-26 | 合肥维信诺电子有限公司 | Display difference determining method and device, electronic equipment and readable storage medium |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101374763B1 (en) * | 2007-03-14 | 2014-03-18 | 삼성디스플레이 주식회사 | Display apparatus and driving method thereof |
| CN104867429B (en) * | 2014-02-25 | 2018-02-06 | 台湾动力检测科技股份有限公司 | The detection device of display |
| CN104282251B (en) * | 2014-10-28 | 2017-02-15 | 合肥鑫晟光电科技有限公司 | Residual image grade judging method of display device and display device |
| CN105575326B (en) * | 2016-02-16 | 2018-11-23 | 深圳市华星光电技术有限公司 | The method for calibrating OLED display panel brightness disproportionation |
| CN106887212A (en) * | 2017-03-28 | 2017-06-23 | 京东方科技集团股份有限公司 | A kind of OLED display and its brightness adjusting method |
| CN107564479B (en) * | 2017-09-12 | 2021-12-17 | 高创(苏州)电子有限公司 | Backlight adjusting method and backlight adjusting system |
| CN108428721B (en) * | 2018-03-19 | 2021-08-31 | 京东方科技集团股份有限公司 | Display device and control method |
| CN110045889A (en) * | 2019-03-08 | 2019-07-23 | 维沃移动通信有限公司 | A kind of display methods and mobile terminal |
| CN111816106B (en) * | 2019-04-11 | 2023-07-04 | 北京小米移动软件有限公司 | Display control method, device and computer readable storage medium |
| CN110634437B (en) * | 2019-09-26 | 2022-10-11 | 昆山国显光电有限公司 | Gamma curve acquisition method and device for multi-segment display brightness and display equipment |
| CN110619836B (en) * | 2019-10-31 | 2022-08-05 | Oppo广东移动通信有限公司 | Display screen processing method and device, storage medium and electronic equipment |
| CN111833791B (en) * | 2020-04-14 | 2022-09-20 | 昆山国显光电有限公司 | Gamma debugging method and gamma debugging device |
| CN112002278B (en) * | 2020-08-28 | 2022-07-15 | 合肥维信诺科技有限公司 | Display panel and debugging method thereof |
-
2020
- 2020-12-15 CN CN202011483375.XA patent/CN112419950B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| AMOLED灰阶补偿算法研究;张磊等;《电子测量技术》;20150915(第09期);第35-39页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112419950A (en) | 2021-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112419950B (en) | Display difference judging method and system of display device and display device | |
| CN110085166B (en) | Bright spot compensation method and device for curved screen | |
| US11056050B2 (en) | Display unit, image processing unit, and display method for improving image quality | |
| US20220358895A1 (en) | Burn-in statistics and burn-in compensation | |
| CN107665684B (en) | Color Mura compensation method | |
| CN111816121B (en) | Display panel brightness compensation method and system and display panel | |
| WO2020215179A1 (en) | Brightness compensation parameter detection method, brightness compensation method, brightness compensation parameter detection device, brightness compensation device, display device, and storage medium | |
| CN103353982B (en) | A kind of tone mapping method based on histogram equalization | |
| US8791931B2 (en) | Image display apparatus and image displaying method | |
| CN107799084A (en) | Device and method, the memory of luminance compensation | |
| CN110428777B (en) | Display correction method and device of display module | |
| WO2020034445A1 (en) | Method and device for correcting color shift of bending area of curved surface screen, storage medium, and terminal | |
| CN108009997B (en) | Method and device for adjusting image contrast | |
| CN108364271B (en) | Method and device for improving image contrast | |
| CN110992887B (en) | Mura compensation data acquisition method and device and display device | |
| CN110322830B (en) | LED screen brightness correction method and device | |
| WO2019061849A1 (en) | Brightness adjustment method and brightness adjustment device for display panel | |
| CN113516939B (en) | Brightness correction method and device, display equipment, computing equipment and storage medium | |
| CN103778900A (en) | Image processing method and system | |
| KR20160130005A (en) | Optical compensation system and Optical compensation method thereof | |
| CN110490838B (en) | Method and device for processing boundaries of areas with different resolutions of display panel | |
| CN111899690A (en) | Method and device for improving low-brightness Mura | |
| CN109727573B (en) | Display method and display device | |
| WO2022120799A1 (en) | Image processing method and apparatus, electronic device, and storage medium | |
| CN110891166B (en) | Image color enhancement method and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |