CN114822444B - Compatible display method, device, equipment and readable storage medium - Google Patents
Compatible display method, device, equipment and readable storage medium Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3607—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 by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
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Abstract
The invention discloses a compatible display method, a device, equipment and a readable storage medium, and belongs to the field of display. Judging whether the current screen body meets the requirement of color quasi characteristic test of the current color gamut of the screen body or not; if yes, determining a brightness demarcation point based on the brightness of the test image; determining the critical value brightness of the current screen body based on the brightness demarcation point; and dividing the brightness interval of the current screen body based on the brightness of the critical value, and carrying out corresponding display processing in different brightness intervals. After determining that the current screen body meets the requirements of the color standard characteristic test of the current color gamut of the screen body, determining a brightness demarcation point in the color standard characteristic test. And determining the brightness of a critical value based on the brightness demarcation point and the minimum brightness and the maximum brightness of the current screen body, and respectively performing different display treatments below the brightness of the critical value and above the brightness of the critical value, thereby meeting the brightness standard and the subjective gray level consistency requirement of a dark field and meeting the requirement of the color standard characteristic.
Description
Technical Field
The present invention relates to the field of display, and in particular, to a compatible display method, apparatus, device, and readable storage medium.
Background
In order to enable the display product to achieve display calibration in HDR (HIGH DYNAMIC RANGE ), dark field display brightness is required to be lower than 0.005nit, and the requirements of gray scale subjective consistency and color level DE2000 test values of less than 1 are simultaneously met.
However, in general, the dark field brightness of the screen body can only be kept at 0.5nit, and in order to reduce to 0.005nit, the dark field brightness needs to be reduced by a local dimming (local backlight adjustment) function. However, in the color level DE2000 test, all the processing modules related to brightness and color are turned off to perform the restoration debugging, and the result of the color level is very poor. Therefore, the technical difficulty of compatibility exists, and the requirements of brightness standard and subjective gray scale consistency of dark fields and color standard characteristics can be met.
Disclosure of Invention
The invention mainly aims to provide a compatible display method, a device, equipment and a readable storage medium, which aim to solve the technical problem of how to simultaneously meet the requirements of brightness standard and subjective gray scale consistency of a dark field and meet the requirements of color standard characteristics.
In order to achieve the above object, the present invention provides a compatible display method, including:
judging whether the current screen body meets the requirement of color quasi characteristic test of the current color gamut of the screen body or not;
If yes, determining a brightness demarcation point based on the brightness of the test image;
determining the critical value brightness of the current screen body based on the brightness demarcation point;
And dividing the brightness interval of the current screen body based on the brightness of the critical value, and carrying out corresponding display processing in different brightness intervals.
Optionally, the step of determining whether the current screen body meets the requirement of the color accuracy characteristic test of the current color gamut of the screen body includes:
Determining the current color gamut of the screen body, wherein the current color gamut of the screen body is a basic color gamut before the current screen body unopened performance confirming module performs color gamut processing;
judging whether the requirements of the color quasi characteristic test of the current color gamut of the screen body are met when the current screen body displays test images with different brightness.
Optionally, the step of determining the brightness demarcation point based on the brightness of the test image includes:
acquiring the lowest brightness and the highest brightness in the test image;
the brightness demarcation point is determined based on the minimum brightness and the maximum brightness.
Optionally, the step of determining the brightness demarcation point based on the lowest brightness and the highest brightness includes:
and taking the ratio of the lowest brightness to the highest brightness as the brightness demarcation point.
Optionally, the step of determining the critical value brightness of the current screen body based on the brightness demarcation point includes:
Obtaining the maximum display brightness of the current screen body;
and determining the critical value brightness based on the brightness demarcation point and the maximum display brightness.
Optionally, the step of dividing the brightness interval of the current screen body based on the critical value brightness and performing corresponding display processing in different brightness intervals includes:
obtaining the minimum display brightness of the current screen body;
Starting local backlight adjustment and performing brightness linear increase processing in a first interval of the minimum display brightness and the critical value brightness;
and in the second interval of the critical value brightness and the maximum display brightness, closing local backlight adjustment and carrying out full brightness treatment.
Optionally, the step of performing the luminance linear increase process includes:
Adopting a white balance algorithm to adjust the display brightness of the current screen body;
The step of performing the full brightness processing includes:
and adjusting the display brightness of the current screen body by adopting a replacement full-bright algorithm.
In addition, in order to achieve the above object, the present invention also provides a compatible display device including:
The judging module is used for judging whether the current screen body meets the requirement of the color quasi characteristic test of the current color gamut of the screen body;
the brightness demarcation point determining module is used for determining a brightness demarcation point based on the brightness of the test image if the brightness demarcation point is satisfied;
the critical value brightness determining module is used for determining the critical value brightness of the current screen body based on the brightness demarcation point;
And the processing module is used for dividing the brightness interval of the current screen body based on the critical value brightness and carrying out corresponding display processing in different brightness intervals.
In addition, to achieve the above object, the present invention also provides a compatible display device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program being configured to implement the steps of the compatible display method described above.
In addition, in order to achieve the above object, the present invention also provides a storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the compatible display method described above.
In the compatible display method, whether the current screen body meets the requirement of the color quasi characteristic test of the current color gamut of the screen body is judged; if yes, determining a brightness demarcation point based on the brightness of the test image; determining the critical value brightness of the current screen body based on the brightness demarcation point; and dividing the brightness interval of the current screen body based on the brightness of the critical value, and carrying out corresponding display processing in different brightness intervals.
After determining that the current screen body meets the requirements of the color standard characteristic test of the current color gamut of the screen body, determining a brightness demarcation point in the color standard characteristic test. And determining the brightness of a critical value based on the brightness demarcation point and the minimum brightness and the maximum brightness of the current screen body, and respectively performing different display treatments below the brightness of the critical value and above the brightness of the critical value, thereby meeting the brightness standard and the subjective gray level consistency requirement of a dark field and meeting the requirement of the color standard characteristic.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flow chart of an embodiment of a compatible display method of the present invention;
FIG. 3 is a schematic diagram of an apparatus according to an embodiment of a compatible display method of the present invention;
FIG. 4 is a diagram illustrating the implementation of the color level characteristics of an embodiment of a compatible display method according to the present invention;
FIG. 5 is a diagram showing the subjective consistency of gray levels according to an embodiment of the compatible display method of the present invention;
FIG. 6 is a schematic diagram of unsatisfactory gray-scale subjective consistency according to an embodiment of a compatible display method of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In order for the display product to achieve HDR class a display calibration, dark field display brightness is required to be below 0.005nit, and the requirements of gray scale subjective consistency and color level DE2000 test values of less than 1 are simultaneously met. The HDR a display standard needs to satisfy the above three conditions, but the color standard requirement in the HDR a display standard only needs the above three conditions. However, in general, the dark field brightness of the screen body can only be kept at 0.5nit, and in order to reduce to 0.005nit, the dark field brightness needs to be reduced by a local dimming function. However, the color level de2000 test requires turning off all the processing related to brightness, color and the like, and performing reduction debugging, otherwise the color level results are very poor.
Therefore, the technical difficulty of compatibility exists, and the requirements of brightness standard and subjective gray scale consistency of dark fields and color standard characteristics can be met.
Therefore, the brightness of the lowest pattern meeting the color standard characteristic test is used as a demarcation point, and the demarcation point and above are closed for local dimming so as to meet the requirement of the color standard characteristic test; and the brightness of a dark field is reduced below the demarcation point by adopting a local dimming technology, and the brightness 0nit is linearly increased to the brightness demarcation point, so that the gray scale is ensured to linearly change from the darkest level to the brightest level, and the picture cannot have serious brightness fault.
Therefore, the requirements of the display product on HDR A level display are met, the high requirements of objective test and subjective test of dark field brightness and color standard characteristics can be compatibly realized, the product standard is met, and the product competitiveness is improved.
Referring to fig. 1, fig. 1 is a schematic device structure of a hardware running environment according to an embodiment of the present invention.
The compatible display device of the embodiment of the invention can be a television, and also can be mobile devices with display functions such as smart phones, tablet computers, electronic book readers, PCs, portable computers and the like.
As shown in fig. 1, the apparatus may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
Optionally, the compatible display device may also include a camera, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a WiFi module, and the like. Among other sensors, such as light sensors, motion sensors, and other sensors. The ambient light sensor can adjust the brightness of the display screen according to the brightness of ambient light, and the proximity sensor can turn off the display screen and/or backlight when the hardware device moves to the edge of the ear. As one of the motion sensors, the gravity acceleration sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and the direction when the device is stationary, and the device can be used for recognizing the application of the gesture of hardware equipment (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; of course, the hardware device may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and the like, which are not described herein.
It will be appreciated by those skilled in the art that the device structure shown in fig. 1 is not limiting of the device and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a computer program may be included in the memory 1005, which is a type of computer storage medium.
In the device shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server, and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call a computer program stored in the memory 1005 and perform the following operations:
judging whether the current screen body meets the requirement of color quasi characteristic test of the current color gamut of the screen body or not;
If yes, determining a brightness demarcation point based on the brightness of the test image;
determining the critical value brightness of the current screen body based on the brightness demarcation point;
And dividing the brightness interval of the current screen body based on the brightness of the critical value, and carrying out corresponding display processing in different brightness intervals.
Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations:
The step of judging whether the current screen body meets the requirement of the color standard characteristic test of the current color gamut of the screen body comprises the following steps:
Determining the current color gamut of the screen body, wherein the current color gamut of the screen body is a basic color gamut before the current screen body unopened performance confirming module performs color gamut processing;
judging whether the requirements of the color quasi characteristic test of the current color gamut of the screen body are met when the current screen body displays test images with different brightness.
Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations:
The step of determining the brightness demarcation point based on the brightness of the test image comprises the following steps:
acquiring the lowest brightness and the highest brightness in the test image;
the brightness demarcation point is determined based on the minimum brightness and the maximum brightness.
Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations:
The step of determining the brightness demarcation point based on the minimum brightness and the maximum brightness comprises:
and taking the ratio of the lowest brightness to the highest brightness as the brightness demarcation point.
Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations:
the step of determining the critical value brightness of the current screen body based on the brightness demarcation point comprises the following steps:
Obtaining the maximum display brightness of the current screen body;
and determining the critical value brightness based on the brightness demarcation point and the maximum display brightness.
Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations: the step of carrying out compatible display on the display terminal according to the compatible display parameters of the display terminal comprises the following steps:
the step of dividing the brightness interval of the current screen body based on the critical value brightness and carrying out corresponding display processing in different brightness intervals comprises the following steps:
obtaining the minimum display brightness of the current screen body;
Starting local backlight adjustment and performing brightness linear increase processing in a first interval of the minimum display brightness and the critical value brightness;
and in the second interval of the critical value brightness and the maximum display brightness, closing local backlight adjustment and carrying out full brightness treatment.
Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations:
the step of performing the luminance linear increase processing includes:
Adopting a white balance algorithm to adjust the display brightness of the current screen body;
The step of performing the full brightness processing includes:
and adjusting the display brightness of the current screen body by adopting a replacement full-bright algorithm.
Referring to fig. 2, a first embodiment of a compatible display method according to the present invention provides a compatible display method, a flow of which is shown in fig. 2, the compatible display method includes:
and S10, judging whether the current screen body meets the requirement of the color quasi characteristic test of the current color gamut of the screen body.
In the screen color standard characteristic monitoring technology, whether the screen meets the requirements of color standard characteristics can be confirmed. All modules related to the PQ (Performance Qualification, performance validation) process need to be turned off and tested with the screen current gamut. If the corresponding points of patterns (images) with different colors and different brightnesses can fall in the standard frame under different saturation, the screen body is proved to be suitable for being used as a color standard display product, otherwise, the screen body is not suitable for being used.
Referring to fig. 4, fig. 4 is a schematic view illustrating the color level of the first embodiment of the compatible display method according to the present invention. If the current screen body meets the Avg DE2000 standard of the color standard characteristic and meets the requirement of the color standard characteristic, the points corresponding to 31 patterns in the triangle area of the color gamut diagram in fig. 4 all fall in a standard frame.
And step S20, if yes, determining a brightness demarcation point based on the brightness of the test image.
If the display of the current screen meets the requirement of the color standard characteristic test of the current color gamut of the screen, determining a brightness demarcation point based on the brightness of the test image in color standard measurement software for performing the color standard characteristic test. For example, the color level measurement software Calman may determine the luminance demarcation point based on the lowest luminance and the highest luminance if the lowest luminance is 22nit and the highest luminance is 150nit in the 31 patterns of the current screen.
If not, the current screen body is adjusted to meet the requirement of the color accuracy characteristic test of the current color gamut of the screen body.
In the method for monitoring the color quasi-characteristic of the screen body, whether the current color gamut of the screen body meets the requirement of the color quasi-characteristic test is tested. If the color gamut is satisfied, the current color gamut can be mapped to the target color gamuts of sRGB (STANDARD RED GreenBlue, general color standard) and DCI-P3 (DIGITAL CINEMA INITIATIVES, digital cinema society), if the color gamuts are not satisfied, the signal processing is indicated to have problems, if the gamma processing is problematic, the local dimming module is opened or not developed, the color level of the target color gamuts cannot be achieved, and the current screen body needs to be adjusted and then mapped to the target color gamuts so as to achieve the color level of the target color gamuts.
And step S30, determining the critical value brightness of the current screen body based on the brightness demarcation point.
And S40, dividing the brightness interval of the current screen body based on the brightness of the critical value, and carrying out corresponding display processing in different brightness intervals.
After the brightness demarcation point is determined, the minimum brightness and the maximum brightness of the current screen body are obtained, the critical value brightness is determined based on the brightness demarcation point and the minimum brightness and the maximum brightness of the current screen body, and different treatments are respectively carried out below the critical value brightness and above the critical value brightness so as to realize compatible display.
In the embodiment, judging whether the current screen body meets the requirement of the color quasi characteristic test of the current color gamut of the screen body or not; if yes, determining a brightness demarcation point based on the brightness of the test image; determining the critical value brightness of the current screen body based on the brightness demarcation point; and dividing the brightness interval of the current screen body based on the brightness of the critical value, and carrying out corresponding display processing in different brightness intervals.
After determining that the current screen body meets the requirements of the color standard characteristic test of the current color gamut of the screen body, determining a brightness demarcation point in the color standard characteristic test. And determining the brightness of a critical value based on the brightness demarcation point and the minimum brightness and the maximum brightness of the current screen body, and respectively performing different display treatments below the brightness of the critical value and above the brightness of the critical value, thereby meeting the brightness standard and the subjective gray level consistency requirement of a dark field and meeting the requirement of the color standard characteristic.
Further, in the second embodiment of the compatible display method of the present invention, based on the first embodiment, step S10 of determining whether the current screen meets the requirement of the color accuracy characteristic test of the current color gamut of the screen includes:
Determining the current color gamut of the screen body, wherein the current color gamut of the screen body is a basic color gamut before the current screen body unopened performance confirming module performs color gamut processing;
judging whether the requirements of the color quasi characteristic test of the current color gamut of the screen body are met when the current screen body displays test images with different brightness.
In this embodiment, a method for monitoring color quasi characteristics of a panel is provided. Referring to fig. 4, fig. 4 is a schematic view illustrating the color level of the first embodiment of the compatible display method according to the present invention. First, all PQ processing modules such as a local dimming module, a CM module, a WB module, a gamma module and the like are closed. The PQ processing modules are mainly the four nonlinear processing modules, and other modules are not listed.
And then using color quasi measurement software to determine the color space of the screen body, determining the current color gamut of the screen body, and mainly recording four color coordinates and brightness of W/R/G/B. Represented in fig. 4 as three vertices of the triangle area of the gamut map plus the most intermediate point. Finally, using color level measurement software to display a plurality of patterns of each color, so as to test whether 31 points in fig. 4 meet the requirement of color level characteristic test of the current color gamut of the screen body, namely whether the points corresponding to the patterns fall in the corresponding standard frames.
Further, in a third embodiment of the compatible display method of the present invention, based on the above first embodiment, step S20 determines a brightness demarcation point based on the brightness of the test image, including:
acquiring the lowest brightness and the highest brightness in the test image;
the brightness demarcation point is determined based on the minimum brightness and the maximum brightness.
The step of determining the critical value brightness of the current screen body based on the brightness demarcation point comprises the following steps:
Obtaining the maximum display brightness of the current screen body;
and determining the critical value brightness based on the brightness demarcation point and the maximum display brightness.
The brightness demarcation point is mainly determined by taking the brightness of the pattern with the lowest brightness in the color level measuring software as a critical point and calculating the brightness of the pattern with the highest proportion brightness, namely the ratio of the lowest brightness to the maximum brightness. The minimum brightness of the screen is 22nit and the maximum brightness is 150nit when the Calman color standard test software is used for marking the current screen. 22 nit/150 nit 100% ≡15%, so the 15% luminance point is the luminance demarcation point.
Further, in a fourth embodiment of the compatible display method of the present invention, based on the above first embodiment, step S30 determines the threshold brightness of the current screen based on the brightness demarcation point, including:
Obtaining the maximum display brightness of the current screen body;
and determining the critical value brightness based on the brightness demarcation point and the maximum display brightness.
If the current (R, G, B) luminance system of the screen is 8 bits, the minimum display luminance is (0, 0), and the maximum display luminance is (8 =255, 255), then 15% Gray (R, G, B) is (38,38,38), which is the threshold luminance.
Further, in a fifth embodiment of the compatible display method of the present invention, based on the fourth embodiment, step S40 divides the brightness interval of the current screen body based on the threshold brightness, and performs corresponding display processing in different brightness intervals, including:
obtaining the minimum display brightness of the current screen body;
Starting local backlight adjustment and performing brightness linear increase processing in a first interval of the minimum display brightness and the critical value brightness;
and in the second interval of the critical value brightness and the maximum display brightness, closing local backlight adjustment and carrying out full brightness treatment.
The step of performing the luminance linear increase processing includes:
Adopting a white balance algorithm to adjust the display brightness of the current screen body;
The step of performing the full brightness processing includes:
and adjusting the display brightness of the current screen body by adopting a replacement full-bright algorithm.
The brightness in the first interval from the minimum display brightness (0, 0) to the critical value brightness (38,38,38) increases linearly, so that the gray scale subjectively consistent is achieved, namely, the 10 gray scale value corresponds to 10nit, and the 20 gray scale value corresponds to 20nit. A second interval from the threshold brightness (38,38,38) to the maximum display brightness (255 ) achieves 100% full brightness processing.
The gray scale is a number of divisions of the brightness change between the brightest and darkest. So as to facilitate the control of the screen brightness corresponding to the signal input. Each digital image is composed of a number of dots, also known as pixels (pixels), which typically each display a number of different colors, consisting of three sub-pixels, red, green, and blue (RGB). The light source behind each sub-pixel may exhibit a different brightness level. While gray scale represents the hierarchical level of different brightness from darkest to brightest. The more such intermediate levels, the finer the picture effect that can be presented. Taking 8 bits as an example, it can represent the power of 2 to 8, which is equal to 256 brightness levels, we call 256 gray levels. Each pixel on the LCD screen is composed of red, green and blue with different brightness levels, and finally different color points are formed. That is, the color change of each point on the screen is actually brought about by the gray-scale change of the three RGB sub-pixels constituting the point.
Referring to fig. 5 and 6, fig. 5 is a schematic diagram of meeting gray-scale subjective consistency in the first embodiment of the compatible display method of the present invention, and fig. 6 is a schematic diagram of not meeting gray-scale subjective consistency in the first embodiment of the compatible display method of the present invention. Before the luminance linear increase processing is performed, there is a phenomenon that the left black portion in fig. 6 shows a luminance fault, that is, there is a problem that the left black portion in fig. 6 does not satisfy the gray scale subjective consistency. The display effect after the luminance linear increase processing is shown in fig. 5, and it can be seen that there is a clear layered display effect in the black part on the left side of fig. 5, and the gray scale subjective consistency is satisfied.
Local Dimming means Local backlight adjustment, in which a backlight composed of hundreds of LEDs (light-emitting diodes) is used to replace a CCFL (Cold Cathode Fluorescent Lamp) backlight, the backlight LEDs can be adjusted according to brightness of an image, brightness of a highlighted portion in a display screen image can be maximized, and at the same time, a dark portion can be reduced in brightness or even turned off, so as to achieve an optimal contrast ratio. Thus, the reduction of the brightness of the dark area reduces the power consumption of the backlight, making the dark area darker.
In a first interval between the minimum display brightness (0, 0) and the critical value brightness (38,38,38), opening the local dimming module, reducing the dark field display brightness, and in a second interval between the critical value brightness (38,38,38) and the maximum display brightness (255 ), closing the local dimming module;
A MaxRGB white balance algorithm is adopted below the critical value brightness (38,38,38), and a Sub-replacement full-bright algorithm is adopted above the critical value brightness (38,38,38).
The requirement of the color quasi characteristic test of the current color gamut of the screen body is met through the segmentation processing method.
In addition, referring to fig. 3, an embodiment of the present invention further provides a device for drawing a touch point position, where the device for drawing a touch point position includes:
The judging module 10 is used for judging whether the current screen body meets the requirement of the color accuracy characteristic test of the current color gamut of the screen body;
A brightness demarcation point determination module 20 for determining a brightness demarcation point based on the brightness of the test image if satisfied;
the threshold brightness determining module 30 is configured to determine a threshold brightness of the current screen based on the brightness demarcation point;
And the processing module 40 is configured to divide the brightness interval of the current screen body based on the threshold brightness, and perform corresponding display processing in different brightness intervals.
Optionally, the judging module 10 is further configured to determine a current color gamut of the screen body, where the current color gamut of the screen body is a basic color gamut before the current screen body unopened performance confirming module performs the color gamut processing;
judging whether the requirements of the color quasi characteristic test of the current color gamut of the screen body are met when the current screen body displays test images with different brightness.
Optionally, the brightness demarcation point determining module 20 is further configured to obtain the lowest brightness and the highest brightness in the test image;
the brightness demarcation point is determined based on the minimum brightness and the maximum brightness.
Optionally, the brightness demarcation point determining module 20 is further configured to use a ratio of the lowest brightness to the highest brightness as the brightness demarcation point.
Optionally, the threshold brightness determining module 30 is further configured to obtain a maximum display brightness of the current screen;
and determining the critical value brightness based on the brightness demarcation point and the maximum display brightness.
Optionally, the threshold brightness determining module 30 is further configured to obtain a minimum display brightness of the current screen;
Starting local backlight adjustment and performing brightness linear increase processing in a first interval of the minimum display brightness and the critical value brightness;
and in the second interval of the critical value brightness and the maximum display brightness, closing local backlight adjustment and carrying out full brightness treatment.
Optionally, the threshold brightness determining module 30 is further configured to adjust the display brightness of the current screen by using a white balance algorithm;
and adjusting the display brightness of the current screen body by adopting a replacement full-bright algorithm.
The compatible display device provided by the invention adopts the compatible display method in the embodiment, and solves the technical problem of how to simultaneously meet the requirements of brightness standard and subjective gray scale consistency of a dark field and simultaneously meet the requirements of color standard characteristics in the prior art. Compared with the prior art, the beneficial effects of the compatible display device provided by the embodiment of the invention are the same as those of the compatible display method provided by the embodiment, and other technical features in the compatible display device are the same as those disclosed by the method of the embodiment, so that the description is omitted herein.
In addition, the embodiment of the invention also provides a compatible display device, which comprises: the system comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the computer program is executed by the processor to realize the steps of the embodiments of the compatible display device operation response method.
In addition, the embodiment of the invention also provides a readable storage medium, and the readable storage medium stores a computer program, and the computer program realizes the steps of the embodiments of the operation response method of the compatible display device when being executed by a processor.
The expansion content of the specific implementation manner of the compatible display device and the readable storage medium of the present invention is basically the same as the above embodiments of the operation response method of the compatible display device, and will not be described in detail herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, including several instructions for causing a device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (6)
1. A compatible display method, characterized in that the compatible display method comprises the steps of:
judging whether the current screen body meets the requirement of color quasi characteristic test of the current color gamut of the screen body or not;
If yes, determining a brightness demarcation point based on the brightness of the test image; the method comprises the steps of obtaining the lowest brightness and the highest brightness in a test image, and taking the ratio of the lowest brightness to the highest brightness as a brightness demarcation point;
determining the critical value brightness of the current screen body based on the brightness demarcation point; the maximum display brightness of the current screen body is obtained, and the critical value brightness is determined based on the brightness demarcation point and the maximum display brightness;
Dividing brightness intervals of the current screen body based on the brightness of the critical value, and carrying out corresponding display processing in different brightness intervals;
the step of dividing the brightness interval of the current screen body based on the critical value brightness and carrying out corresponding display processing in different brightness intervals comprises the following steps:
obtaining the minimum display brightness of the current screen body;
Starting local backlight adjustment and performing brightness linear increase processing in a first interval of the minimum display brightness and the critical value brightness;
and in the second interval of the critical value brightness and the maximum display brightness, closing local backlight adjustment and carrying out full brightness treatment.
2. The compatible display method of claim 1, wherein the step of determining whether the current screen meets the requirements of the color quasi-property test of the current color gamut of the screen comprises:
Determining the current color gamut of the screen body, wherein the current color gamut of the screen body is a basic color gamut before the current screen body unopened performance confirming module performs color gamut processing;
judging whether the requirements of the color quasi characteristic test of the current color gamut of the screen body are met when the current screen body displays test images with different brightness.
3. The compatible display method of claim 1, wherein the performing the luminance linear increase process comprises:
Adopting a white balance algorithm to adjust the display brightness of the current screen body;
The step of performing the full brightness processing includes:
and adjusting the display brightness of the current screen body by adopting a replacement full-bright algorithm.
4. A compatible display device, the compatible display device comprising:
The judging module is used for judging whether the current screen body meets the requirement of the color quasi characteristic test of the current color gamut of the screen body;
The brightness demarcation point determining module is used for determining a brightness demarcation point based on the brightness of the test image if the brightness demarcation point is satisfied; the method comprises the steps of obtaining the lowest brightness and the highest brightness in a test image, and taking the ratio of the lowest brightness to the highest brightness as a brightness demarcation point;
the critical value brightness determining module is used for determining the critical value brightness of the current screen body based on the brightness demarcation point; the maximum display brightness of the current screen body is obtained, and the critical value brightness is determined based on the brightness demarcation point and the maximum display brightness;
The processing module is used for dividing the brightness interval of the current screen body based on the critical value brightness and carrying out corresponding display processing in different brightness intervals; the processing module is further configured to:
obtaining the minimum display brightness of the current screen body;
Starting local backlight adjustment and performing brightness linear increase processing in a first interval of the minimum display brightness and the critical value brightness;
and in the second interval of the critical value brightness and the maximum display brightness, closing local backlight adjustment and carrying out full brightness treatment.
5. A compatible display device, the device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program being configured to implement the steps of the compatible display method of any one of claims 1 to 3.
6. A computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the steps of the compatible display method of any of claims 1 to 3.
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