CN114040122A - Display device, image processing method and device - Google Patents
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Abstract
The application discloses a display device, an image processing method and an image processing device, wherein in the application, an image is divided into a plurality of subareas, and the screen brightness of each subarea is determined according to the average brightness of each subarea; the method comprises the steps of determining the reflection brightness corresponding to a screen according to the screen brightness of each partition, the size of each partition and the preset reflectivity of a human body to illumination, determining the target brightness of an image according to the photosensitive value of the image and the reflection brightness, adjusting the exposure of the image according to the corresponding relation between the pre-stored brightness and the exposure, and controlling the image with the adjusted exposure to be displayed, so that the reflected light irradiated on the human body through the screen brightness is eliminated, the target brightness of the image is accurately determined, the exposure of the image is determined according to the target brightness, and accordingly, overexposure processing of the image in the image processing process is avoided, and the quality of image display is improved.
Description
Cross reference to related applications
The present application claims priority to chinese patent application filed on 12/02/2020/chinese patent office under the name "a display device, an image processing method, a device and a medium", application No. 202011392676.1, the entire contents of which are incorporated herein by reference.
Technical Field
The present application relates to the field of image processing technologies, and in particular, to a display device, an image processing method, and an image processing device.
Background
With the rapid development of informatization, there is a display device with an image capturing device, by which a surrounding environment or a target person can be photographed and the photographed image is displayed on a screen of the display device.
In the prior art, the image capturing device is generally located at the top of the display device, and in the case that the photographing environment is dark, a sensor (sensor) of the image capturing device senses the brightness of the environment around the image capturing device, and the exposure can be changed according to the brightness of the environment around the image capturing device, so that the quality of image display is improved. However, due to the fact that the brightness of the display device itself is high, light on the screen of the display device is irradiated on a user (namely, a target), and the light is reflected to an area which can be sensed by a sensor in the image acquisition device, so that the photosensitive value of the sensor of the image acquisition device is inconsistent with the photosensitive value which is ideally not influenced by the brightness of the display device, and a shot image is overexposed, and the quality of image display is influenced.
Disclosure of Invention
The application provides a display device, an image processing method, a device and a medium, which are used for solving the problems that in the prior art, the image display quality is influenced due to the fact that the brightness of the display device is over-exposed.
The application provides a display device, the display device includes:
a display for displaying;
a controller to perform:
dividing an image into a plurality of partitions, and determining the screen brightness of each partition according to the average brightness of each partition; determining the reflection brightness corresponding to the screen according to the screen brightness of each partition, the size of each partition and the preset reflectivity of a human body to illumination; determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image; and adjusting the exposure of the image according to the corresponding relation between the pre-stored brightness and the exposure, and controlling the image with the adjusted exposure to be displayed on the display.
The application also provides an image processing method, which is applied to display equipment and comprises the following steps:
dividing an image into a plurality of partitions, and determining the screen brightness of each partition according to the average brightness of each partition; determining the reflection brightness corresponding to the screen according to the screen brightness of each partition, the size of each partition and the preset reflectivity of a human body to illumination; determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image; and adjusting the exposure of the image according to the corresponding relation between the pre-stored brightness and the exposure, and controlling the image with the adjusted exposure to be displayed.
The present application further provides an electronic device comprising a processor and a memory, the memory being configured to store program instructions, the processor being configured to implement the steps of the image processing method described above when executing a computer program stored in the memory.
The present application also provides a computer-readable storage medium, which stores a computer program that, when executed by a processor, implements the steps of the above-described image processing method.
The present application also provides a display device, the display device including:
a display having a display screen for displaying;
the image acquisition equipment is used for acquiring an image containing a target body, and a sensor of the image acquisition equipment is used for acquiring the light sensitivity;
a controller configured to perform:
and under the same environment, when the brightness of the display screen is different and the same target body is collected, controlling the image containing the target body to be displayed at different exposure levels.
The present application also provides a display device, the display device including:
a display having a display screen for displaying;
the image acquisition equipment is used for acquiring an image containing a target body, and a sensor of the image acquisition equipment is used for acquiring the light sensitivity;
a controller configured to perform:
determining the brightness of the display screen, determining the reflection brightness based on the brightness of the display screen, and determining the exposure level of the image containing the target body according to the photosensitive quantity and the reflection brightness.
Since the image is divided into a plurality of partitions in the application, the screen brightness of each partition is determined according to the average brightness of each partition; the method comprises the steps of determining the reflection brightness corresponding to a screen according to the screen brightness of each partition, the size of each partition and the preset reflectivity of a human body to illumination, determining the target brightness of an image according to the photosensitive value of the image and the reflection brightness, adjusting the exposure of the image according to the corresponding relation between the pre-stored brightness and the exposure, and controlling the image with the adjusted exposure to be displayed, so that the reflected light irradiated on the human body through the screen brightness is eliminated, the target brightness of the image is accurately determined, the exposure of the image is determined according to the target brightness, and the exposure of the image is processed based on the exposure, so that the image is prevented from being subjected to overexposure processing in the image processing process, and the image display quality is improved.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display device according to some embodiments of the present application;
FIG. 2 is a schematic process diagram of an image processing method based on exposure adjustment according to some embodiments of the present disclosure;
fig. 3 is a process diagram of an image processing method according to some embodiments of the present application;
fig. 4 is a schematic structural diagram of an electronic device according to some embodiments of the present application.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.
In the application, after the image is collected by the image collecting device, the display device divides the image into a plurality of subareas based on the image to be displayed, determines the screen brightness of each subarea according to the average brightness of each subarea, determines the reflection brightness corresponding to the screen according to the screen brightness of each subarea, the size of each subarea and the preset reflectivity of human body to illumination, determines the target brightness of the image according to the photosensitive value and the reflection brightness of the image, adjusts the exposure of the image according to the corresponding relation between the pre-stored brightness and the exposure, controls the image with the exposure adjusted to be displayed, so that the reflected light of the screen irradiated on the human body can be removed, the target brightness of the image is accurately determined, the exposure of the image is determined according to the target brightness, and the exposure of the image is processed based on the exposure, therefore, overexposure processing on the image in the image processing process is avoided, and the image display quality is improved.
In order to avoid overexposure processing on an image and improve image display quality in an image processing process, the application provides a display device, an image processing method and a medium.
Fig. 1 is a schematic structural diagram of a display device 100 according to some embodiments of the present application, where the display device 100 includes:
a display 101 for displaying;
a controller 102, the controller 102 configured to perform:
dividing an image into a plurality of partitions, and determining the screen brightness of each partition according to the average brightness of each partition; determining the reflection brightness corresponding to the screen according to the screen brightness of each partition, the size of each partition and the preset reflectivity of a human body to illumination; determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image; and adjusting the exposure level of the image according to the corresponding relation between the pre-stored brightness and the exposure level, and controlling the image with the adjusted exposure level to be displayed on the display 101.
Specifically, the controller is configured to perform:
determining the target average brightness of the image according to the average brightness of each partition;
and determining the screen brightness of each partition according to the target average brightness and a function relation stored in advance.
In this application the display device may be a device with a display, such as a smart tv, the display having a display screen, and the display device may comprise an image acquisition device, such as a camera. When the image acquisition device acquires an image and the display device displays the image, the following processing is performed. Alternatively, the display device and the image capturing device may not be integrated, and the following processing may be performed when the display device receives an image captured by the image capturing device and displays the image.
In the image processing process, in order to improve the display quality of an image, because the influence of a display device causes the problem of overexposure of the image acquired by an image acquisition device, the exposure of the image needs to be adjusted, and in order to enable the image to be displayed normally, the ideal exposure of the image is determined firstly. Specifically, after the image is acquired, the target average brightness of the image is determined. When determining the target average brightness of the image, the image may be divided into a plurality of partitions, and the target average brightness of the image is calculated according to the average brightness of each partition of the acquired image, that is, the target average brightness of the image is determined by the ratio of the average brightness of all the partitions of the image to the number of the partitions, where the size of each partition may be the same or different. In the present application, the average brightness of each partition may be obtained by a System On Chip (SOC) in the display device.
If the image is divided into N subareas, and the average brightness of the N subareas of the acquired image is Xin_1、Xin_2、Xin_3……Xin_NThen the target average brightness of the image is
In the present application, after the target average brightness of the image is determined, the screen brightness of each partition may be determined according to the obtained target average brightness of the image and a function relationship stored in advance. In order to eliminate the influence of reflected light which is irradiated on the human body by light and reflected by the human body due to too high brightness of the screen on exposure adjustment, in the application, the reflected brightness reflected from the human body needs to be determined, and the corresponding reflected brightness of the screen can be determined according to the screen brightness of each partition, the size of each partition and the preset reflectivity of the human body to light.
In order to accurately adjust the exposure of the image and improve the display quality of the image, the ideal brightness of the image which is not influenced by the reflected light reflected by the human body can be determined, namely the target brightness of the image is determined. In this application, after determining the reflection brightness, the target brightness of the image may be determined according to the photosensitive value of the image and the reflection brightness, where the photosensitive value of the image may be obtained by a sensor of an image capturing device of the display device, and a determination process of the photosensitive value is prior art and is not described herein again.
After the target brightness of the image is determined, in order to improve the quality of image display and accurately determine the ideal exposure of the image, the display device prestores a corresponding relationship between the brightness and the exposure value, that is, after the target brightness of the image is determined, the exposure value corresponding to the target brightness can be found based on the corresponding relationship, the exposure of the image is adjusted according to the exposure value, and the image with the adjusted exposure is controlled to be displayed on a display.
In the application, an image is divided into a plurality of subareas, the screen brightness of each subarea is determined according to the average brightness of each subarea, the reflection brightness corresponding to the screen is determined according to the screen brightness of each subarea, the size of each subarea and the preset reflectivity of a human body to illumination, the target brightness of the image is determined according to the photosensitive value of the image and the reflection brightness, the exposure level of the image is adjusted according to the corresponding relation between the prestored brightness and the exposure level, and the image with the adjusted exposure level is controlled to be displayed, so that the reflected brightness after the human body is irradiated by the screen brightness is removed, the target brightness of the image is accurately determined, the exposure level of the image is determined according to the target brightness, and the exposure level of the image is processed based on the exposure level, so that the phenomenon that the overexposure processing of the image in the image processing process is avoided, The quality of image display is improved.
In order to determine the screen brightness of each partition, on the basis of the above embodiments, in the present application, the controller 102 is configured to perform:
determining a target PWM duty ratio corresponding to the target average brightness of the image according to a pre-stored corresponding relation between the average brightness of the image and the PWM duty ratio;
determining a backlight numerical value according to a first product of the target PWM duty ratio and a preset maximum value of screen brightness;
and determining a first ratio of the average brightness of each partition of the image to the maximum value of the preset average brightness, and determining the screen brightness of each partition according to the first ratio and the backlight value.
The display device of the application stores the corresponding relation between the average brightness of the image and the PWM duty ratio in advance, and after the target average brightness of the image is determined, the target PWM duty ratio corresponding to the target average brightness of the image can be determined based on the corresponding relation. After determining the target PWM duty ratio, determining a first product of the target PWM duty ratio and a preset maximum value of screen brightness as a backlight value, for example, the target PWM duty ratio is a, and the preset maximum value of screen brightness is Xin_maxThen the backlight value is A X Xin_max。
In the application, after the backlight value is determined, a first ratio of the average brightness of the image of each partition to the maximum value of the preset average brightness is determined, and then the screen brightness of each partition is determined according to the first ratio and the backlight value.
In order to determine the screen brightness of each partition, on the basis of the above embodiments, in the present application, the controller 102 is configured to perform:
and determining the screen brightness of each partition according to the backlight numerical value and the first ratio.
In this application, after the backlight value is determined, a first ratio of the average brightness of the image of each partition to the maximum value of the preset average brightness is determined, and the screen brightness of each partition may be determined according to the backlight value and the first ratio, specifically, a set index of the first ratio may be determined, and the product of the backlight value and the set index of the first ratio is determined as the screen brightness of each partition. Can be determined according to the formula:
determining the screen brightness of each partition, wherein i is 1,2,3 … … N, N is the number of partitions into which the image is divided, LiScreen brightness of ith division, LBack lightIs a backlight value, Xin_iIs the average luminance of the ith partition, XmaxIs the maximum value of the preset average brightness, and gamma is an index which is preset.
In order to determine the corresponding reflection brightness of the screen, on the basis of the above embodiments, in the present application, the controller 102 is configured to perform:
determining the luminous flux corresponding to the screen of each partition according to the screen brightness of each partition and the size of each partition;
determining the reflection brightness corresponding to the screen of each partition according to a second product of the luminous flux corresponding to the screen of each partition and the preset reflectivity of the human body to illumination;
and determining the reflection brightness sum corresponding to the screen of each partition as the reflection brightness corresponding to the screen.
In this application, the luminous flux corresponding to each partition may be determined according to the luminance of each partition and the area of each partition, and specifically, the luminous flux corresponding to the screen displaying each partition may be determined according to the product of the luminance of each partition and the area of each partition. For example, if the image is divided into N regions, the luminance of each region is LLight flux 1、LLight flux 2、LLight flux 3……LLuminous flux NAnd the areas of the N subareas are S respectively1、S2、S3……SNThen the luminous fluxes of the N subareas are respectively LLight flux 1*S1、LLight flux 2*S2、LLight flux 3*S3……LLuminous flux N*SN。
In the present application, after the luminous flux corresponding to the screen displaying each partition is determined, the reflection brightness corresponding to the screen displaying each partition is determined according to the luminous flux corresponding to the screen displaying each partition and the preset reflectivity of the human body to the light, specifically,when determining the reflection brightness corresponding to the screen displaying each partition according to the light flux corresponding to the screen displaying each partition and the preset reflectivity of the human body to the illumination, the reflection brightness corresponding to the screen displaying each partition may be determined as a second product of the light flux corresponding to the screen displaying each partition and the preset reflectivity of the human body to the illumination, for example, if the light flux corresponding to the screen displaying the ith partition is LLuminous flux iIf the preset reflectivity of the human body to the illumination is K, the reflection brightness L corresponding to the screen of the ith subarea is displayedReflection i＝LLuminous flux i*K。
After determining the reflection brightness corresponding to the screen displaying each partition, according to the reflection brightness corresponding to the screen displaying each partition, the reflection brightness corresponding to the whole screen is determined, for example, the average value, or the maximum value, or the mode value may be determined as the reflection brightness of the screen, and for more accurate determination, the reflection brightness corresponding to the screen of each partition may be LReflection 1、LReflection 2……LReflection NIs determined as the reflected brightness corresponding to the entire screen, the reflected brightness corresponding to the screen being
In order to determine the target brightness of the image, on the basis of the above embodiments, in the present application, the controller 102 is configured to perform:
and determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image.
In this application, since the magnitude of the photosensitive value is affected by the light of the environment itself and the reflected light of the human body, after the photosensitive value and the reflected brightness are determined, the display device may eliminate the reflected brightness in the acquired photosensitive value, and determine the target brightness of the image according to the photosensitive value of the image and the reflected brightness corresponding to the whole screen, specifically, determine the target brightness of the image according to the difference between the photosensitive value of the image and the reflected brightness, for example, if the acquired photosensitive value is recorded as the reflected brightnessLsensorThe reflection brightness corresponding to the whole screen is recorded as LReflectionThen the target brightness L of the imagefinal＝Lsensor-LReflection。
FIG. 2 is a schematic process diagram of an image processing method based on exposure adjustment according to some embodiments of the present disclosure;
the system level chip SOC obtains the average brightness of each partition of the image for partitioning, after the average brightness of each partition is determined, the ratio of the average brightness of the image of all the partitions to the number of the partitions is determined as the target average brightness of the image, and the target PWM duty ratio corresponding to the target average brightness of the image is determined based on the corresponding relation between the average brightness of the image and the PWM duty ratio stored in the LUT table in advance.
And determining a first product of the target PWM duty ratio and the maximum value of the preset screen brightness as a backlight value, and determining a setting index product of the backlight value and a first ratio of the average brightness and the maximum value of the preset average brightness as the screen brightness of each partition.
And taking the product of the screen brightness of each partition and the area of each partition as the luminous flux of each screen, determining the second product of the luminous flux of each screen and the preset reflectivity of human body to illumination as the reflection brightness corresponding to the screen of each partition, and determining the reflection brightness corresponding to the screen of each partition as the reflection brightness corresponding to the screen.
And determining the target brightness of the image according to the photosensitive value of the image and the reflection brightness, realizing brightness restoration, determining the exposure value corresponding to the reflection brightness based on the corresponding relationship between the pre-stored brightness and the exposure, and adjusting the exposure of the image according to the exposure value.
The image acquisition equipment is used for acquiring an image containing a target body, and a sensor of the image acquisition equipment is used for acquiring the light sensitivity; a controller configured to perform: the brightness of the display screen is determined, the reflection brightness is determined based on the brightness of the display screen, and the exposure level of the image containing the target body is determined according to the photosensitive quantity and the reflection brightness.
Therefore, under the same environment, when the brightness of the display screen is different and the same target is collected, the image containing the target is displayed with different exposure levels.
In order to avoid overexposure processing on an image and improve image display quality in an image processing process, the present application provides an image processing method, where the method is applied to a display device, and fig. 3 is a schematic process diagram of an image processing method provided in some embodiments of the present application, where the process includes the following steps:
s301: the image is divided into a plurality of partitions, and the screen brightness of each partition is determined according to the average brightness of each partition.
S302: and determining the reflection brightness corresponding to the screen according to the screen brightness of each partition, the size of each partition and the preset reflectivity of the human body to illumination.
S303: and determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image.
S304: and adjusting the exposure of the image according to the corresponding relation between the pre-stored brightness and the exposure, and controlling the image with the adjusted exposure to be displayed.
In a possible embodiment, the determining the screen brightness of each partition according to the average brightness of each partition includes:
determining the target average brightness of the image according to the average brightness of each partition;
and determining the screen brightness of each partition according to the target average brightness and a function relation stored in advance.
In a possible implementation manner, the determining the screen brightness of each partition according to the target average brightness and a function relationship saved in advance includes:
determining a target PWM duty ratio corresponding to the target average brightness of the image according to a pre-stored corresponding relation between the average brightness of the image and the PWM duty ratio;
determining a backlight numerical value according to a first product of the target PWM duty ratio and a preset maximum value of screen brightness;
and determining a first ratio of the average brightness of each partition of the image to the maximum value of the preset average brightness, and determining the screen brightness of each partition according to the first ratio and the backlight value.
In a possible implementation manner, the determining the screen brightness of each partition according to the first ratio and the backlight value includes:
and determining the screen brightness of each partition according to the backlight numerical value and the first ratio.
In a possible implementation manner, determining the reflection brightness corresponding to the screen according to the screen brightness of each partition, the size of each partition, and a preset reflectivity of a human body to light includes:
determining the luminous flux corresponding to the screen of each partition according to the screen brightness of each partition and the size of each partition;
determining the reflection brightness corresponding to the screen of each partition according to a second product of the luminous flux corresponding to the screen of each partition and the preset reflectivity of the human body to illumination;
and determining the reflection brightness sum corresponding to the screen of each partition as the reflection brightness corresponding to the screen.
In one possible embodiment, the determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image comprises:
and determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image.
The method is applied to the display device, and for a specific process of executing the image processing method by the display device, reference may be made to the other embodiments, and details are not described again.
Fig. 4 is a schematic structural diagram of an electronic device according to some embodiments of the present application, and on the basis of the foregoing embodiments, an embodiment of the present application further provides an electronic device, as shown in fig. 4, including: the system comprises a processor 401, a communication interface 402, a memory 403 and a communication bus 404, wherein the processor 401, the communication interface 402 and the memory 403 complete mutual communication through the communication bus 404;
the memory 403 has stored therein a computer program which, when executed by the processor 401, causes the processor 401 to perform the steps of:
dividing an image into a plurality of partitions, and determining the screen brightness of each partition according to the average brightness of each partition; determining the reflection brightness corresponding to the screen according to the screen brightness of each partition, the size of each partition and the preset reflectivity of a human body to illumination; determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image; and adjusting the exposure of the image according to the corresponding relation between the pre-stored brightness and the exposure, and controlling the image with the adjusted exposure to be displayed.
Further, the processor 401 is further configured to determine a target average brightness of the image according to the average brightness of each partition; and determining the screen brightness of each partition according to the target average brightness and a function relation stored in advance.
Further, the processor 401 is further configured to determine a target PWM duty corresponding to the target average brightness of the image according to a correspondence between the average brightness of the image and the PWM duty that is stored in advance; determining a backlight numerical value according to a first product of the target PWM duty ratio and a preset maximum value of screen brightness; and determining a first ratio of the average brightness of each partition of the image to the maximum value of the preset average brightness, and determining the screen brightness of each partition according to the first ratio and the backlight value.
Further, the processor 401 is further configured to determine the screen brightness of each partition according to the backlight value and the first ratio.
Further, the processor 401 is further configured to determine, according to the screen brightness of each partition and the size of each partition, a luminous flux corresponding to the screen of each partition; determining the reflection brightness corresponding to the screen of each partition according to a second product of the luminous flux corresponding to the screen of each partition and the preset reflectivity of the human body to illumination; and determining the reflection brightness sum corresponding to the screen of each partition as the reflection brightness corresponding to the screen.
Further, the processor 401 is further configured to determine a target brightness of the image according to the photosensitive value of the image and the reflection brightness.
The communication interface 402 is used for communication between the above-described electronic apparatus and other apparatuses.
The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Alternatively, the memory may be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a central processing unit, a Network Processor (NP), and the like; but may also be a Digital instruction processor (DSP), an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like.
On the basis of the foregoing embodiments, the present application provides a computer-readable storage medium, in which a computer program executable by a processor is stored, and when the program runs on the processor, the processor is caused to execute the following steps:
dividing an image into a plurality of partitions, and determining the screen brightness of each partition according to the average brightness of each partition; determining the reflection brightness corresponding to the screen according to the screen brightness of each partition, the size of each partition and the preset reflectivity of a human body to illumination; determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image; and adjusting the exposure of the image according to the corresponding relation between the pre-stored brightness and the exposure, and controlling the image with the adjusted exposure to be displayed.
In a possible embodiment, the determining the screen brightness of each partition according to the average brightness of each partition includes:
determining the target average brightness of the image according to the average brightness of each partition;
and determining the screen brightness of each partition according to the target average brightness and a function relation stored in advance.
In a possible implementation manner, the determining the screen brightness of each partition according to the target average brightness and a function relationship saved in advance includes:
determining a target PWM duty ratio corresponding to the target average brightness of the image according to a pre-stored corresponding relation between the average brightness of the image and the PWM duty ratio; determining a backlight numerical value according to a first product of the target PWM duty ratio and a preset maximum value of screen brightness; and determining a first ratio of the average brightness of each partition of the image to the maximum value of the preset average brightness, and determining the screen brightness of each partition according to the first ratio and the backlight value.
In a possible implementation manner, the determining the screen brightness of each partition according to the first ratio and the backlight value includes:
and determining the screen brightness of each partition according to the backlight numerical value and the first ratio.
In a possible implementation manner, the determining, according to the screen brightness of each partition, the size of each partition, and a preset reflectivity of a human body to light, the reflection brightness corresponding to the screen includes:
determining the luminous flux corresponding to the screen of each partition according to the screen brightness of each partition and the size of each partition; determining the reflection brightness corresponding to the screen of each partition according to a second product of the luminous flux corresponding to the screen of each partition and the preset reflectivity of the human body to illumination; and determining the reflection brightness sum corresponding to the screen of each partition as the reflection brightness corresponding to the screen.
In one possible embodiment, the determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image comprises:
and determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image.
Since the principle of solving the problem of the computer readable medium is similar to that of the image processing method, after the processor executes the computer program in the computer readable medium, the steps implemented by the processor may refer to the other embodiments, and repeated details are not repeated.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A display device, characterized in that the display device comprises:
a display for displaying;
a controller to perform:
dividing an image into a plurality of partitions, and determining the screen brightness of each partition according to the average brightness of each partition; determining the reflection brightness corresponding to the screen according to the screen brightness of each partition, the size of each partition and the preset reflectivity of a human body to illumination; determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image; and adjusting the exposure of the image according to the corresponding relation between the pre-stored brightness and the exposure, and controlling the image with the adjusted exposure to be displayed on the display.
2. The display device according to claim 1, wherein the controller is configured to perform:
determining the target average brightness of the image according to the average brightness of each partition;
and determining the screen brightness of each partition according to the target average brightness and a function relation stored in advance.
3. The display device according to claim 1, wherein the controller is configured to perform:
determining a target PWM duty ratio corresponding to the target average brightness of the image according to a pre-stored corresponding relation between the average brightness of the image and the PWM duty ratio;
determining a backlight numerical value according to a first product of the target PWM duty ratio and a preset maximum value of screen brightness;
and determining a first ratio of the average brightness of each partition of the image to the maximum value of the preset average brightness, and determining the screen brightness of each partition according to the first ratio and the backlight value.
4. The display device according to claim 3, wherein the controller is configured to perform:
and determining the screen brightness of each partition according to the backlight numerical value and the first ratio.
5. The display device according to claim 1, wherein the controller is configured to perform:
determining the luminous flux corresponding to the screen of each partition according to the screen brightness of each partition and the size of each partition;
determining the reflection brightness corresponding to the screen of each partition according to a second product of the luminous flux corresponding to the screen of each partition and the preset reflectivity of the human body to illumination;
and determining the reflection brightness sum corresponding to the screen of each partition as the reflection brightness corresponding to the screen.
6. The display device according to claim 1, wherein the controller is configured to perform:
and determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image.
7. An image processing method, characterized in that the method comprises:
dividing an image into a plurality of partitions, and determining the screen brightness of each partition according to the average brightness of each partition;
determining the reflection brightness corresponding to the screen according to the screen brightness of each partition, the size of each partition and the preset reflectivity of a human body to illumination;
determining the target brightness of the image according to the photosensitive value and the reflection brightness of the image;
and adjusting the exposure of the image according to the corresponding relation between the pre-stored brightness and the exposure, and controlling the image with the adjusted exposure to be displayed.
8. An electronic device, characterized in that the electronic device comprises a processor and a memory, the memory being adapted to store program instructions, the processor being adapted to carry out the steps of the image processing method of claim 7 when executing a computer program stored in the memory.
9. A display device, characterized in that the display device comprises:
a display having a display screen for displaying;
the image acquisition equipment is used for acquiring an image containing a target body, and a sensor of the image acquisition equipment is used for acquiring the light sensitivity;
a controller configured to perform:
and under the same environment, when the brightness of the display screen is different and the same target body is collected, controlling the image containing the target body to be displayed at different exposure levels.
10. A display device, characterized in that the display device comprises:
a display having a display screen for displaying;
the image acquisition equipment is used for acquiring an image containing a target body, and a sensor of the image acquisition equipment is used for acquiring the light sensitivity;
a controller configured to perform:
determining the brightness of the display screen, determining the reflection brightness based on the brightness of the display screen, and determining the exposure level of the image containing the target body according to the photosensitive quantity and the reflection brightness.
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