CN114420061A - Screen brightness adjusting method and device, storage medium and display equipment - Google Patents
Screen brightness adjusting method and device, storage medium and display equipment Download PDFInfo
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- 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
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
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- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The embodiment of the application provides a screen brightness adjusting method, a screen brightness adjusting device, a storage medium and display equipment, wherein the method is applied to the display equipment and comprises the following steps: acquiring the current ambient light intensity in the environment where the display equipment is located; determining a spatial filter corresponding to the current ambient light intensity, wherein the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is; and adjusting the brightness of the backlight subarea of the display equipment based on the spatial filter, so that the brightness difference of the backlight subareas before and after the brightness adjustment is changed, and the visual requirement of human eyes under the change of the ambient light intensity is matched. According to the embodiment of the application, the ambient light intensity of the environment where the display device is located is obtained, the convergence of the spatial filter is determined based on the ambient light intensity, and finally the brightness difference of each backlight partition is adjusted through the spatial filter, so that the screen picture of the display device is matched with the visual requirements of human eyes under different ambient light intensities.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a method and an apparatus for adjusting screen brightness, a storage medium, and a display device.
Background
In the prior art, the brightness convergence degree of each backlight partition of a screen on a display device is the same. Because the sensitivities of human eyes to bright and dark details are different when the intensity of the ambient light intensity of the environment where the screen is located is different, the image feeling given to the human is not good if the brightness convergence degree of each area on the screen is the same.
Therefore, the prior art has defects and needs to be improved and developed.
Disclosure of Invention
The embodiment of the application provides a screen brightness adjusting method and device, a storage medium and a display device, which can adjust the brightness difference of each backlight partition of the display device according to the ambient light intensity, so that the screen picture of the display device is matched with the visual requirements of human eyes under different ambient light intensities.
In the screen brightness adjustment method according to the embodiment of the present application, the determining the spatial filter corresponding to the current ambient light intensity includes:
acquiring a corresponding relation between a preset ambient light intensity range and a spatial filter coefficient;
determining a target ambient light intensity range in which the current ambient light intensity is located;
determining a spatial filter coefficient corresponding to the target ambient light intensity range based on the corresponding relation;
and determining the spatial filter coefficient as the spatial filter coefficient corresponding to the current ambient light intensity.
In the screen brightness adjustment method according to the embodiment of the present application, the determining the spatial filter corresponding to the current ambient light intensity includes:
acquiring a preset mapping relation between a spatial filter coefficient and ambient light intensity;
and determining the spatial filter coefficient corresponding to the current ambient light intensity based on the preset mapping relation.
In the screen brightness adjusting method according to the embodiment of the present application, the mapping relationship includes a first mapping relationship between ambient light intensity and mapped light intensity, and a second mapping relationship between mapped light intensity and the spatial filter coefficient;
the determining, based on the preset mapping relationship, a spatial filter coefficient corresponding to the current ambient light intensity includes:
mapping the current ambient light intensity into a preset light intensity range based on the first mapping relation to obtain the mapped light intensity, wherein the preset light intensity range is smaller than the reference variation range of the ambient light intensity;
and determining each spatial filter coefficient under the mapped light intensity based on a second mapping relation between the mapped light intensity and the spatial filter coefficient.
In the screen brightness adjustment method according to the embodiment of the present application, the adjusting the brightness of the backlight partition of the display device based on the spatial filter so that the brightness difference of the backlight partition before and after the brightness adjustment changes to match the visual requirement of the human eye under the change of the ambient light intensity includes:
based on the spatial filter, the illumination intensity of each backlight source unit corresponding to each adjacent backlight partition is adjusted, so that the brightness of the backlight partition of the display device is adjusted, the brightness difference of the backlight partition before and after brightness adjustment is changed, and the visual requirement of human eyes under the change of the ambient light intensity is matched.
In the screen brightness adjustment method according to the embodiment of the present application, after the obtaining of the current ambient light intensity in the environment where the display device is located, the method further includes:
and globally adjusting the brightness of each backlight partition based on the current ambient light intensity, so that the brightness of each backlight partition is consistent and meets the preset brightness requirement.
In the screen brightness adjustment method according to the embodiment of the present application, the adjusting the brightness of the backlight partition of the display device based on the spatial filter so that the brightness difference of the backlight partition before and after the brightness adjustment changes to match the visual requirement of the human eye under the change of the ambient light intensity includes:
and adjusting the brightness of part of the backlight subareas based on the spatial filter, so that the brightness difference of the backlight subareas before and after brightness adjustment is changed to match the visual requirement of human eyes under the change of the ambient light intensity.
The embodiment of the present application further provides a screen brightness adjusting device, the device includes:
the acquisition module is used for acquiring the current ambient light intensity in the environment where the display equipment is located;
a determining module, configured to determine a spatial filter corresponding to the current ambient light intensity, where the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is;
and the adjusting module is used for adjusting the brightness of the backlight subarea of the display equipment based on the spatial filter, so that the brightness difference of the backlight subareas before and after brightness adjustment is changed, and the visual requirement of human eyes under the change of the ambient light intensity is matched.
The embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program runs on a computer, the computer is enabled to execute the screen brightness adjusting method according to any one of the above embodiments.
The embodiment of the present application further provides a display device, where the display device includes a processor and a memory, where the memory stores a computer program, and the processor is configured to execute the screen brightness adjusting method according to any one of the above embodiments by calling the computer program stored in the memory.
According to the embodiment of the application, the ambient light intensity in the environment where the display device is located is obtained, then the convergence of the spatial filter is determined based on the ambient light intensity, wherein the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is, and finally the brightness difference of each backlight partition is adjusted through the spatial filter, so that the screen of the display device is matched with the visual requirements of human eyes under different ambient light intensities.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic flow chart of a screen brightness adjusting method according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a spatial filter with a scale of 5 according to an embodiment of the present application.
Fig. 3 is a diagram of a gaussian (normal) distribution function curve and a filter coefficient Ar provided in the embodiment of the present application.
Fig. 4 is a gaussian (normal) distribution function curve and a filter coefficient Ar under different ambient light intensities according to an embodiment of the present disclosure.
Fig. 5 is a schematic structural diagram of a screen brightness adjusting device according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of another screen brightness adjusting device according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present application.
The embodiment of the application provides a screen brightness adjusting method which can be applied to display equipment. The display device can be a mobile phone, a tablet computer and other display devices.
Referring to fig. 1, fig. 1 is a schematic flow chart of a screen brightness adjusting method according to an embodiment of the present disclosure. The screen brightness adjusting method may include the steps of:
In some embodiments, the ambient light intensity in the environment of the display device may be obtained by a light sensor disposed above the screen of the display device.
And 102, determining a spatial filter corresponding to the current ambient light intensity, wherein the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is.
In some embodiments, the determining the spatial filter corresponding to the current ambient light intensity includes:
acquiring a corresponding relation between a preset ambient light intensity range and a spatial filter coefficient;
determining a target ambient light intensity range in which the current ambient light intensity is located;
determining a spatial filter coefficient corresponding to the target ambient light intensity range based on the corresponding relation;
and determining the spatial filter coefficient as the spatial filter coefficient corresponding to the current ambient light intensity.
For example, when the preset ambient light intensity a ranges from 0.00001cd to 0.01cd, the corresponding spatial filter coefficient is a1, when the preset ambient light intensity a ranges from 0.01cd to 10cd, the corresponding spatial filter coefficient is a2, and if the current ambient light intensity is 1cd, the target ambient light intensity range where the current ambient light intensity is located is 0.01cd to 10cd, the spatial filter coefficient corresponding to the current ambient light intensity is a 2.
In some embodiments, the determining the spatial filter corresponding to the current ambient light intensity includes:
acquiring a preset mapping relation between a spatial filter coefficient and ambient light intensity;
and determining the spatial filter coefficient corresponding to the current ambient light intensity based on the preset mapping relation.
For example, the predetermined mapping relationship between the spatial filter coefficients and the ambient light intensity is: when the ambient light intensity is 1cd, the corresponding spatial filter coefficient is A1; when the ambient light intensity is 100cd, the corresponding spatial filter coefficient is A2; at an ambient light intensity of 200cd, the corresponding spatial filter coefficient is a 3. The spatial filter coefficient corresponding to the current ambient light intensity may be determined based on the preset mapping relationship.
In some embodiments, the mapping comprises a first mapping of ambient light intensity to mapped light intensity, and a second mapping of mapped light intensity to the spatial filter coefficients;
the determining, based on the preset mapping relationship, a spatial filter coefficient corresponding to the current ambient light intensity includes:
mapping the current ambient light intensity into a preset light intensity range based on the first mapping relation to obtain the mapped light intensity, wherein the preset light intensity range is smaller than the reference variation range of the ambient light intensity;
and determining each spatial filter coefficient under the mapped light intensity based on a second mapping relation between the mapped light intensity and the spatial filter coefficient.
For example, the predetermined light intensity range is 0.1 cd-10000 cd, and the reference variation range of the environmental light intensity is 0.00001 cd-100000 cd. Within the predetermined light intensity range, the first mapping relationship is: the ambient light intensity is 1cd, and the light intensity after mapping is 0.001 cd; the ambient light intensity is 2000cd and the mapped light intensity is 2 cd. The second mapping relation is as follows: the light intensity after mapping is 0.001cd, and the spatial filter coefficient is A1; the mapped light intensity is 2cd and the spatial filter coefficients are a 2. Then, the current ambient light intensity may be mapped into a preset light intensity range based on the first mapping relationship to obtain mapped light intensity, and then, based on a second mapping relationship between the mapped light intensity and spatial filter coefficients, each spatial filter coefficient under the mapped light intensity is determined. For example, the mapped light intensity is determined to be 0.001cd from the current ambient light intensity being 1cd, and the spatial filter coefficient is a1 from the mapped light intensity being 0.001 cd.
In the Local Dimming (Local Dimming) algorithm, the structure of the Spatial Filter (Spatial Filter) is roughly as shown in fig. 2, and is a square array composed of coefficient rows and coefficient columns with the same number D, where D is the scale of the Filter. In the spatial filter, the coefficient a0 is generally centered, and then the coefficients a1, a2 … … are sequentially spread out around a0 in one turn. The coefficient a0 is generally required to be unique, so that D is necessarily odd. As shown in fig. 2, the coefficient a0 is unique and centered, a1 forms a first turn around a0 and a2 forms a second turn around a1, forming a spatial filter with a dimension of 5.
In the spatial filter, the values of the coefficients a0, a1, a2 … … are generally made smaller in order, and when they are subjected to a gaussian (normal) distribution function as in the following expression 1, they are called a gaussian spatial filter.
In formula 1, r >0 is a variable, and represents the number of turns of the coefficient Ar when the variable is an integer; c >0 is a constant, and is a convergence coefficient of the coefficient Ar, and the larger the value thereof, the stronger the convergence of Ar. As shown in fig. 3, when r ( r 1, 2.) is constant, the larger the convergence coefficient C, the smaller Ar/a0 will be, i.e., the stronger the convergence of Ar is.
And the human eye has the following characteristics. When the ambient light is weak, human eyes are sensitive to bright and dark details, and Ar is required to have weak convergence, so that the backlight brightness difference of each backlight partition is reduced, the transition of picture levels is smooth and natural, and the negative influence of Local Dimming (a partition backlight control technology, Chinese is regional backlight, matrix backlight and the like) can be reduced as much as possible; when the ambient light is strong, human eyes are not very sensitive to bright and dark details, and Ar is required to have strong convergence, so that the backlight difference of each backlight partition is increased, and the details are highlighted by drawing at the picture level, thereby fully exerting the technical advantages of Local Dimming.
Let the convergence coefficient C be a continuous monotonically increasing function of the ambient light intensity a, i.e.:
c ═ f (a) formula 2
further, assume that:
C＝aB/2formula 4
In the formula 4, B is a constant and generally has a value range of (0, 2), and is used for limiting the range of C. Since in nature the ambient light intensity a ranges from 0.00001 lumen to 100000 lumen, the magnitude span is too large, and the convergence coefficient C needs to be limited to a small variation range by the parameter B. For example, in formula 4, if the value range of a is (0.00001, 100000), and B is 1, 0.2, and 0.1, the value ranges of C are (0.003, 316.2), (0.316, 3.162), and (0.562, 1.778), respectively. Namely, the smaller the value of B is, the smaller the value range of C is, so that the change range of the coefficient Ar of the Gaussian space filter is smaller, and finally, the required Local Dimming effect is ensured to be stably presented when the ambient light intensity is changed violently.
Formula 4 brings formula 1 to yield:
when B is constant and the ambient light intensity a changes, a is set to have three states of a1, a2 and a3, and a 1< a 2< a3 is satisfied. From equation 4, the corresponding convergence coefficients C1, C2, and C3 are obtained, and it is easy to find that C1< C2< C3. Then figure 4 is plotted as follows according to equation 5.
In fig. 4, the curves corresponding to the ambient light intensities a1, a2 and a3 are curve 1, curve 2 and curve 3, respectively. When r (r is 1, 2 … …) is constant (for example, 1), the values of Ar/a0 in curve 1, curve 2, and curve 3 decrease in order, that is, the convergence increases in order. Further, this example basically satisfies the above-described requirement that the spatial filter coefficient Ar is more strongly converged as the ambient light intensity a is larger.
And 103, adjusting the brightness of the backlight subarea of the display equipment based on the spatial filter, so that the brightness difference of the backlight subareas before and after the brightness adjustment is changed, and the visual requirement of human eyes under the change of the ambient light intensity is matched.
The adjusting of the brightness of the backlight partition refers to adjusting the brightness of each adjacent backlight partition to make the brightness of each adjacent backlight partition different and have a certain difference, so that the screen of the display device matches the visual requirements of human eyes under different ambient light intensities.
When the ambient light is weak, human eyes are sensitive to bright and dark details, the backlight brightness difference of each adjacent backlight partition is required to be reduced, the image level transition is smooth and natural, and the negative influence of matrix backlight is reduced as much as possible; when the ambient light is strong, human eyes are not very sensitive to bright and dark details, the brightness difference of each adjacent backlight partition is required to be increased, and the details are stretched and highlighted in the picture level.
For example, when the current ambient light intensity is 1cd, human eyes are sensitive to bright and dark details, the backlight luminance difference of each adjacent backlight partition is required to be reduced, the transition of picture levels is smooth and natural, and the luminance difference of the adjacent backlight partitions can be set to 0.1 cd; when the current ambient light intensity is 1000cd, human eyes are not very sensitive to bright and dark details, the brightness difference of each adjacent backlight partition is required to be increased, and the brightness difference of the adjacent backlight partitions can be 5cd if the image level stretches and highlights the details.
In some embodiments, said adjusting the luminance of the backlight partition of the display device based on the spatial filter such that the difference in luminance of the backlight partition before and after the luminance adjustment varies to match the visual needs of the human eye under ambient light intensity variations comprises:
based on the spatial filter, the illumination intensity of each backlight source unit corresponding to each adjacent backlight partition is adjusted, so that the brightness of the backlight partition of the display device is adjusted, the brightness difference of the backlight partition before and after brightness adjustment is changed, and the visual requirement of human eyes under the change of the ambient light intensity is matched.
Namely, the brightness of each adjacent backlight subarea is adjusted by adjusting the illumination intensity of each backlight unit.
In some embodiments, after obtaining the current ambient light intensity in the environment where the display device is located, the method further includes:
and globally adjusting the brightness of each backlight partition based on the current ambient light intensity, so that the brightness of each backlight partition is consistent and meets the preset brightness requirement.
Before adjusting the brightness of each adjacent backlight partition to make the brightness of each adjacent backlight partition generate difference, the brightness of each backlight partition is adjusted globally to make the brightness of each backlight partition consistent and meet the preset brightness requirement, and the preset brightness requirement can be that the brightness of the backlight partition is matched with the ambient light intensity, so that human eyes are not stimulated.
In some embodiments, said adjusting the luminance of the backlight partition of the display device based on the spatial filter such that the difference in luminance of the backlight partition before and after the luminance adjustment varies to match the visual needs of the human eye under ambient light intensity variations comprises:
and adjusting the brightness of part of the backlight subareas based on the spatial filter, so that the brightness difference of the backlight subareas before and after brightness adjustment is changed to match the visual requirement of human eyes under the change of the ambient light intensity.
The brightness of each backlight partition is adjusted globally in the prior art, so that the brightness of each backlight partition is consistent and meets the preset brightness requirement, and then the brightness of partial backlight partitions is adjusted, so that the brightness difference of adjacent backlight partitions is generated, and the visual requirement of a screen picture matched with human eyes under the current ambient light intensity is met.
All the above optional technical solutions may be combined arbitrarily to form optional embodiments of the present application, and are not described herein again.
In particular implementation, the present application is not limited by the execution sequence of the described steps, and some steps may be performed in other sequences or simultaneously without conflict.
As can be seen from the above, in the screen brightness adjusting method provided in the embodiment of the present application, the ambient light intensity in the environment where the display device is located is obtained, and then the convergence of the spatial filter is determined based on the ambient light intensity, where the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is, and finally the luminance difference of each backlight partition is adjusted by the spatial filter, so that the screen image of the display device matches the visual requirements of human eyes under different ambient light intensities.
The embodiment of the application also provides a screen brightness adjusting device, and the screen brightness adjusting method and the screen brightness adjusting device can be integrated in the display equipment. The display device can be a mobile phone, a tablet computer and other display devices.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a screen brightness adjusting device according to an embodiment of the present disclosure. The screen brightness adjusting apparatus 30 may include:
an obtaining module 31, configured to obtain a current ambient light intensity in an environment where the display device is located;
a determining module 32, configured to determine a spatial filter corresponding to the current ambient light intensity, where the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is;
the adjusting module 33 is configured to adjust the brightness of the backlight partition of the display device based on the spatial filter, so that the brightness difference of the backlight partition before and after the brightness adjustment changes, and the visual requirement of the human eye under the change of the ambient light intensity is matched.
In some embodiments, the determining module 32 is configured to obtain a corresponding relationship between a preset ambient light intensity range and a spatial filter coefficient; determining a target ambient light intensity range in which the current ambient light intensity is located; determining a spatial filter coefficient corresponding to the target ambient light intensity range based on the corresponding relation; and determining the spatial filter coefficient as the spatial filter coefficient corresponding to the current ambient light intensity.
In some embodiments, the determining module 32 is configured to obtain a preset mapping relationship between spatial filter coefficients and ambient light intensity; and determining the spatial filter coefficient corresponding to the current ambient light intensity based on the preset mapping relation.
In some embodiments, the adjusting module 33 is configured to adjust, based on the spatial filter, the illumination intensities of the backlight units respectively corresponding to the adjacent backlight partitions, so as to adjust the brightness of the backlight partition of the display device, so that the brightness difference of the backlight partitions before and after the brightness adjustment changes, and the visual requirement of human eyes under the change of the ambient light intensity is matched.
In some embodiments, the adjusting module 33 is configured to adjust the luminance of a part of the backlight partitions based on the spatial filter, so that the luminance difference of the backlight partitions before and after the luminance adjustment changes to match the visual requirement of the human eye under the change of the ambient light intensity.
In specific implementation, the modules may be implemented as independent entities, or may be combined arbitrarily and implemented as one or several entities.
As can be seen from the above, the screen brightness adjusting apparatus 30 provided in the embodiment of the present application obtains the current ambient light intensity in the environment where the display device is located through the obtaining module 31; determining, by a determining module 32, a spatial filter corresponding to the current ambient light intensity, where the weaker the ambient light intensity, the weaker the convergence of the spatial filter; the brightness of the backlight subarea of the display equipment is adjusted through the adjusting module 33 based on the spatial filter, so that the brightness difference of the backlight subareas before and after the brightness adjustment is changed, and the visual requirement of human eyes under the change of the ambient light intensity is matched. According to the embodiment of the application, the ambient light intensity in the environment where the display device is located is obtained, then the convergence of the spatial filter is determined based on the ambient light intensity, wherein the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is, and finally the brightness difference of each backlight partition is adjusted through the spatial filter, so that the screen of the display device is matched with the visual requirements of human eyes under different ambient light intensities.
Referring to fig. 6, fig. 6 is another structural schematic diagram of a screen brightness adjusting device according to an embodiment of the present disclosure, in which the screen brightness adjusting device 30 includes a memory 120, one or more processors 180, and one or more application programs, where the one or more application programs are stored in the memory 120 and configured to be executed by the processor 180; the processor 180 may include an acquisition module 31, a determination module 32, and an adjustment module 33. For example, the structures and connection relationships of the above components may be as follows:
the memory 120 may be used to store applications and data. The memory 120 stores applications containing executable code. The application programs may constitute various functional modules. The processor 180 executes various functional applications and data processing by running the application programs stored in the memory 120. Further, the memory 120 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, the memory 120 may also include a memory controller to provide the processor 180 with access to the memory 120.
The processor 180 is a control center of the device, connects various parts of the entire terminal using various interfaces and lines, performs various functions of the device and processes data by running or executing an application program stored in the memory 120 and calling data stored in the memory 120, thereby monitoring the entire device. Optionally, processor 180 may include one or more processing cores; preferably, the processor 180 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, an application program, and the like.
Specifically, in this embodiment, the processor 180 loads the executable code corresponding to the process of one or more application programs into the memory 120 according to the following instructions, and the processor 180 runs the application programs stored in the memory 120, thereby implementing various functions:
an obtaining module 31, configured to obtain a current ambient light intensity in an environment where the display device is located;
a determining module 32, configured to determine a spatial filter corresponding to the current ambient light intensity, where the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is;
the adjusting module 33 is configured to adjust the brightness of the backlight partition of the display device based on the spatial filter, so that the brightness difference of the backlight partition before and after the brightness adjustment changes, and the visual requirement of the human eye under the change of the ambient light intensity is matched.
In some embodiments, the determining module 32 is configured to obtain a corresponding relationship between a preset ambient light intensity range and a spatial filter coefficient; determining a target ambient light intensity range in which the current ambient light intensity is located; determining a spatial filter coefficient corresponding to the target ambient light intensity range based on the corresponding relation; and determining the spatial filter coefficient as the spatial filter coefficient corresponding to the current ambient light intensity.
In some embodiments, the determining module 32 is configured to obtain a preset mapping relationship between spatial filter coefficients and ambient light intensity; and determining the spatial filter coefficient corresponding to the current ambient light intensity based on the preset mapping relation.
In some embodiments, the adjusting module 33 is configured to adjust, based on the spatial filter, the illumination intensities of the backlight units respectively corresponding to the adjacent backlight partitions, so as to adjust the brightness of the backlight partition of the display device, so that the brightness difference of the backlight partitions before and after the brightness adjustment changes, and the visual requirement of human eyes under the change of the ambient light intensity is matched.
In some embodiments, the adjusting module 33 is configured to adjust the luminance of a part of the backlight partitions based on the spatial filter, so that the luminance difference of the backlight partitions before and after the luminance adjustment changes to match the visual requirement of the human eye under the change of the ambient light intensity.
The embodiment of the application also provides a display device. Referring to fig. 7, fig. 7 is a schematic structural diagram of a display device provided in an embodiment of the present application, where the display device may be used to implement the screen brightness adjusting method provided in the foregoing embodiment.
As shown in fig. 7, the display device 1200 may include components such as an RF (Radio Frequency) circuit 110, a memory 120 including one or more computer-readable storage media (only one shown), an input unit 130, a display unit 140, a sensor 150, an audio circuit 160, a transmission module 170, a processor 180 including one or more processing cores (only one shown), and a power supply 190. Those skilled in the art will appreciate that the display device 1200 configuration shown in FIG. 7 does not constitute a limitation of the display device 1200, and may include more or fewer components than shown, or some components in combination, or a different arrangement of components. Wherein:
the RF circuit 110 is used for receiving and transmitting electromagnetic waves, and performs interconversion between the electromagnetic waves and electrical signals, so as to communicate with a communication network or other devices. The RF circuitry 110 may include various existing circuit elements for performing these functions, such as an antenna, a radio frequency transceiver, a digital signal processor, an encryption/decryption chip, a Subscriber Identity Module (SIM) card, memory, and so forth. The RF circuitry 110 may communicate with various networks such as the internet, an intranet, a wireless network, or with other devices over a wireless network.
The memory 120 may be configured to store software programs and modules, such as program instructions/modules corresponding to the vibration adjustment method in the foregoing embodiment, and the processor 180 executes various functional applications and data processing by running the software programs and modules stored in the memory 120, so as to improve the accuracy of controlling the screen-off of the terminal.
The input unit 130 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, the input unit 130 may include a touch-sensitive surface 131 as well as other input devices 132. The touch-sensitive surface 131, also referred to as a touch display screen or a touch pad, may collect touch operations by a user on or near the touch-sensitive surface 131 (e.g., operations by a user on or near the touch-sensitive surface 131 using a finger, a stylus, or any other suitable object or attachment), and drive the corresponding connection device according to a predetermined program. Alternatively, the touch sensitive surface 131 may comprise two parts, a touch detection means and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 180, and can receive and execute commands sent by the processor 180. Additionally, the touch-sensitive surface 131 may be implemented using various types of resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch-sensitive surface 131, the input unit 130 may also include other input devices 132. In particular, other input devices 132 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
The display unit 140 may be used to display information input by or provided to a user and various graphical user interfaces of the display device 1200, which may be made up of graphics, text, icons, video, and any combination thereof. The Display unit 140 may include a Display panel 141, and optionally, the Display panel 141 may be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. Further, the touch-sensitive surface 131 may cover the display panel 141, and when a touch operation is detected on or near the touch-sensitive surface 131, the touch operation is transmitted to the processor 180 to determine the type of the touch event, and then the processor 180 provides a corresponding visual output on the display panel 141 according to the type of the touch event. Although in FIG. 4, touch-sensitive surface 131 and display panel 141 are shown as two separate components to implement input and output functions, in some embodiments, touch-sensitive surface 131 may be integrated with display panel 141 to implement input and output functions.
The display device 1200 may also include at least one sensor 150, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel 141 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 141 and/or the backlight when the display device 1200 is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the mobile phone is stationary, and can be used for applications of recognizing the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which may be further configured on the display device 1200, detailed descriptions thereof are omitted.
The display device 1200, which may assist the user in emailing, browsing web pages, accessing streaming media, etc., through the transmission module 170 (e.g., a Wi-Fi module), provides the user with wireless broadband internet access. Although fig. 4 shows the transmission module 170, it is understood that it does not belong to the essential constitution of the display device 1200, and may be omitted entirely as needed within the scope not changing the essence of the invention.
The processor 180 is a control center of the display device 1200, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the display device 1200 and processes data by operating or executing software programs and/or modules stored in the memory 120 and calling data stored in the memory 120, thereby performing overall monitoring of the mobile phone. Optionally, processor 180 may include one or more processing cores; in some embodiments, the processor 180 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 180.
The display device 1200 also includes a power supply 190 (e.g., a battery) that provides power to the various components, which in some embodiments may be logically coupled to the processor 180 via a power management system to manage charging, discharging, and power consumption management functions via the power management system. The power supply 190 may also include any component including one or more of a dc or ac power source, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.
Although not shown, the display device 1200 may further include a camera (e.g., a front camera, a rear camera), a bluetooth module, etc., which are not described in detail herein. Specifically, in this embodiment, the display unit 140 of the display apparatus 1200 is a touch screen display, and the display apparatus 1200 further includes a memory 120, and one or more programs, wherein the one or more programs are stored in the memory 120, and the one or more programs configured to be executed by the one or more processors 180 include instructions for:
acquiring the current ambient light intensity in the environment where the display equipment is located;
determining a spatial filter corresponding to the current ambient light intensity, wherein the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is;
and adjusting the brightness of the backlight subarea of the display equipment based on the spatial filter, so that the brightness difference of the backlight subareas before and after the brightness adjustment is changed, and the visual requirement of human eyes under the change of the ambient light intensity is matched.
In some embodiments, the processor 180 is configured to obtain a corresponding relationship between a preset ambient light intensity range and a spatial filter coefficient;
determining a target ambient light intensity range in which the current ambient light intensity is located;
determining a spatial filter coefficient corresponding to the target ambient light intensity range based on the corresponding relation;
and determining the spatial filter coefficient as the spatial filter coefficient corresponding to the current ambient light intensity.
In some embodiments, the processor 180 is configured to obtain a preset mapping relationship between the spatial filter coefficients and the ambient light intensity;
and determining the spatial filter coefficient corresponding to the current ambient light intensity based on the preset mapping relation.
In some embodiments, the processor 180 is configured to map the current ambient light intensity into a preset light intensity range based on the first mapping relationship, so as to obtain a mapped light intensity, where the preset light intensity range is smaller than the reference variation range of the ambient light intensity;
and determining each spatial filter coefficient under the mapped light intensity based on a second mapping relation between the mapped light intensity and the spatial filter coefficient.
In some embodiments, the processor 180 is configured to adjust the illumination intensities of the backlight units respectively corresponding to the adjacent backlight partitions based on the spatial filter, so as to adjust the brightness of the backlight partition of the display device, so that the brightness difference of the backlight partition before and after the brightness adjustment changes, and the visual requirement of human eyes under the change of the ambient light intensity is matched.
In some embodiments, the processor 180 is configured to perform global adjustment on the brightness of each backlight partition based on the current ambient light intensity, so that the brightness of each backlight partition is consistent and meets a preset brightness requirement.
In some embodiments, the processor 180 is configured to adjust the luminance of a portion of the backlight partitions based on the spatial filter, such that the difference in luminance of the backlight partitions before and after the luminance adjustment varies to match the visual needs of the human eye under the variation of the ambient light intensity.
As can be seen from the above, an embodiment of the present application provides a display apparatus 1200, where the display apparatus 1200 performs the following steps: acquiring the current ambient light intensity in the environment where the display equipment is located; determining a spatial filter corresponding to the current ambient light intensity, wherein the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is; and adjusting the brightness of the backlight subarea of the display equipment based on the spatial filter, so that the brightness difference of the backlight subareas before and after the brightness adjustment is changed, and the visual requirement of human eyes under the change of the ambient light intensity is matched. According to the embodiment of the application, the ambient light intensity in the environment where the display device is located is obtained, then the convergence of the spatial filter is determined based on the ambient light intensity, wherein the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is, and finally the brightness difference of each backlight partition is adjusted through the spatial filter, so that the screen of the display device is matched with the visual requirements of human eyes under different ambient light intensities.
An embodiment of the present application further provides a storage medium, where a computer program is stored in the storage medium, and when the computer program runs on a computer, the computer executes the screen brightness adjusting method according to any of the above embodiments.
It should be noted that, for the screen brightness adjusting method described in the present application, it can be understood by those skilled in the art that all or part of the process of implementing the screen brightness adjusting method described in the embodiments of the present application can be implemented by controlling the relevant hardware through a computer program, where the computer program can be stored in a computer readable storage medium, such as a memory of a display device, and executed by at least one processor in the display device, and during the execution process, the process of the embodiment of the vibration adjusting method can be included. The storage medium may be a magnetic disk, an optical disk, a Read Only Memory (ROM), a Random Access Memory (RAM), or the like.
For the screen brightness adjusting device of the embodiment of the present application, each functional module may be integrated into one processing chip, or each module may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium, such as a read-only memory, a magnetic or optical disk, or the like.
The screen brightness adjusting method, the screen brightness adjusting device, the storage medium and the display device provided by the embodiment of the application are described in detail above. The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A screen brightness adjusting method is applied to a display device and is characterized by comprising the following steps:
acquiring the current ambient light intensity in the environment where the display equipment is located;
determining a spatial filter corresponding to the current ambient light intensity, wherein the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is;
and adjusting the brightness of the backlight subarea of the display equipment based on the spatial filter, so that the brightness difference of the backlight subareas before and after the brightness adjustment is changed, and the visual requirement of human eyes under the change of the ambient light intensity is matched.
2. The screen brightness adjustment method of claim 1, wherein the determining the spatial filter corresponding to the current ambient light intensity comprises:
acquiring a corresponding relation between a preset ambient light intensity range and a spatial filter coefficient;
determining a target ambient light intensity range in which the current ambient light intensity is located;
determining a spatial filter coefficient corresponding to the target ambient light intensity range based on the corresponding relation;
and determining the spatial filter coefficient as the spatial filter coefficient corresponding to the current ambient light intensity.
3. The screen brightness adjustment method of claim 1, wherein the determining the spatial filter corresponding to the current ambient light intensity comprises:
acquiring a preset mapping relation between a spatial filter coefficient and ambient light intensity;
and determining the spatial filter coefficient corresponding to the current ambient light intensity based on the preset mapping relation.
4. The screen brightness adjustment method of claim 3, wherein the mapping relationship includes a first mapping relationship of ambient light intensity and mapped light intensity, and a second mapping relationship of mapped light intensity and the spatial filter coefficients;
the determining, based on the preset mapping relationship, a spatial filter coefficient corresponding to the current ambient light intensity includes:
mapping the current ambient light intensity into a preset light intensity range based on the first mapping relation to obtain the mapped light intensity, wherein the preset light intensity range is smaller than the reference variation range of the ambient light intensity;
and determining each spatial filter coefficient under the mapped light intensity based on a second mapping relation between the mapped light intensity and the spatial filter coefficient.
5. The screen brightness adjustment method of claim 1, wherein the adjusting the brightness of the backlight partition of the display device based on the spatial filter such that the brightness difference of the backlight partition before and after the brightness adjustment varies to match the visual requirement of human eyes under the variation of the ambient light intensity comprises:
based on the spatial filter, the illumination intensity of each backlight source unit corresponding to each adjacent backlight partition is adjusted, so that the brightness of the backlight partition of the display device is adjusted, the brightness difference of the backlight partition before and after brightness adjustment is changed, and the visual requirement of human eyes under the change of the ambient light intensity is matched.
6. The screen brightness adjustment method of claim 1, wherein after obtaining the current ambient light intensity in the environment where the display device is located, further comprising:
and globally adjusting the brightness of each backlight partition based on the current ambient light intensity, so that the brightness of each backlight partition is consistent and meets the preset brightness requirement.
7. The screen brightness adjustment method of claim 6, wherein the adjusting the brightness of the backlight partition of the display device based on the spatial filter such that the brightness difference of the backlight partition before and after the brightness adjustment varies to match the visual requirement of human eyes under the variation of the ambient light intensity comprises:
and adjusting the brightness of part of the backlight subareas based on the spatial filter, so that the brightness difference of the backlight subareas before and after brightness adjustment is changed to match the visual requirement of human eyes under the change of the ambient light intensity.
8. A screen brightness adjustment apparatus, comprising:
the acquisition module is used for acquiring the current ambient light intensity in the environment where the display equipment is located;
a determining module, configured to determine a spatial filter corresponding to the current ambient light intensity, where the weaker the ambient light intensity is, the weaker the convergence of the spatial filter is;
and the adjusting module is used for adjusting the brightness of the backlight subarea of the display equipment based on the spatial filter, so that the brightness difference of the backlight subareas before and after brightness adjustment is changed, and the visual requirement of human eyes under the change of the ambient light intensity is matched.
9. A computer-readable storage medium, in which a computer program is stored, which, when run on a computer, causes the computer to execute the screen brightness adjustment method according to any one of claims 1 to 7.
10. A display device comprising a processor and a memory, the memory storing therein a computer program, the processor being configured to execute the screen brightness adjustment method according to any one of claims 1 to 7 by calling the computer program stored in the memory.
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