CN110969984A - Dynamic brightness adjusting method, system, equipment and storage medium of display equipment - Google Patents

Dynamic brightness adjusting method, system, equipment and storage medium of display equipment Download PDF

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Publication number
CN110969984A
CN110969984A CN201911216356.8A CN201911216356A CN110969984A CN 110969984 A CN110969984 A CN 110969984A CN 201911216356 A CN201911216356 A CN 201911216356A CN 110969984 A CN110969984 A CN 110969984A
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screen
brightness
image
area
highlight
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许晓龙
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Inventec Appliances Nanchang Corp
Inventec Appliances Shanghai Corp
Inventec Appliances Corp
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]

Abstract

The invention provides a method, a system, equipment and a storage medium for dynamically adjusting the brightness of display equipment, wherein the method comprises the following steps: acquiring an image shot by a front camera of display equipment; detecting the positions of human eyes and the positions of highlight areas from the images, wherein the highlight areas are areas with the brightness meeting preset brightness conditions in the images; determining the position of a light reflecting area in a screen according to the position of human eyes in the image and the position of the highlight area; the display brightness of the light reflecting area in the screen is improved. According to the invention, the positions of human eyes and the position of a highlight area are automatically detected, the position of a screen reflection area is automatically determined, and the brightness is increased in the reflection area without integrally adjusting the brightness of the whole screen, so that the display effect is improved and the energy consumption is reduced, the brightness of other non-reflection areas can be kept unchanged, the eyes of a user cannot be stimulated due to over-brightness, and the damage degree to the eyes is reduced.

Description

Dynamic brightness adjusting method, system, equipment and storage medium of display equipment
Technical Field
The present invention relates to the field of display technologies, and in particular, to a method, a system, a device, and a storage medium for dynamically adjusting brightness of a display device.
Background
In the prior art, the screen brightness adjustment of the display device mainly detects the current ambient brightness to obtain a screen brightness adjustment value, and the brightness adjustment value can be adjusted in a relatively smooth change mode so as to reduce the discomfort feeling to the eyes of a user.
However, in the brightness adjustment method of the display device in the prior art, the overall brightness of the whole screen is adjusted, and the situation that the illumination at different positions of the whole screen may be different is not considered, so that some areas in the screen may not achieve the desired brightness adjustment effect, and when the brightness of the whole screen is improved, the power consumption is relatively high, and the endurance time of the display device is reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a method, a system, equipment and a storage medium for dynamically adjusting the brightness of display equipment.
The embodiment of the invention provides a dynamic brightness adjusting method of display equipment, which comprises the following steps:
acquiring an image shot by a front camera of display equipment;
detecting the positions of human eyes and the positions of highlight areas from the images, wherein the highlight areas are areas with the brightness meeting preset brightness conditions in the images;
determining the position of a light reflecting area in a screen according to the position of human eyes in the image and the position of the highlight area;
the display brightness of the light reflecting area in the screen is improved.
Optionally, the preset brightness condition is that the brightness of the pixel point is greater than a preset brightness threshold, or a difference between the brightness of the pixel point and an average brightness value of the image is greater than a preset difference threshold.
Optionally, the detecting the position of the human eye and the position of the highlight region from the image comprises the following steps:
detecting a left eye center coordinate and a right eye center coordinate in the image;
detecting a coordinate range of a highlight region in the image.
Optionally, the determining the position of the light reflection area in the screen according to the position of the human eye in the image and the position of the highlight area includes the following steps:
calculating the distance represented by each pixel point in the image;
acquiring the distance represented by each pixel point in the screen of the display equipment;
projecting the positions of the human eyes and the positions of the high-brightness light sources in the image to a screen according to the distance represented by each pixel point in the image and the distance represented by each pixel point in the screen, and determining the positions of the corresponding human eyes and the positions of the high-brightness areas in the screen;
selecting a central area of the position of the human eye and the position of the highlight light source in the screen as a light reflection area in the screen.
Optionally, the calculating the distance represented by each pixel point in the image includes the following steps:
calculating the interpupillary distance r in the image according to the left eye center coordinate and the right eye center coordinate in the image;
and acquiring the actual pupil distance R of human eyes, and calculating the distance d1 represented by each pixel point in the image according to the actual pupil distance of the human eyes and the pupil distance in the image, wherein d1 is R/R.
Optionally, the obtaining the distance represented by each pixel point in the screen of the display device includes calculating the distance d2 represented by each pixel point in the screen of the display device by using the following formula:
Figure BDA0002299631790000021
where S represents the size of the screen in inches, Rh is the vertical resolution, and Rw is the horizontal resolution.
Optionally, the determining the position of the corresponding human eye and the position of the highlight region in the screen includes the following steps:
selecting a human eye position point in the image, wherein the coordinates are defined as (X11, Y11), projecting the human eye position point into the screen, and calculating the coordinates (X12, Y12) of the human eye position point in the screen according to the following formula:
Figure BDA0002299631790000031
Figure BDA0002299631790000032
wherein d1 is the distance represented by each pixel point in the image, and d2 is the distance represented by each pixel point in the screen of the display device;
selecting a highlight region position point in said image, the coordinates being defined as (X21, Y21), projecting the highlight region position point into said screen, the coordinates (X22, Y22) of the highlight region position point in said screen being calculated according to the following formula:
Figure BDA0002299631790000033
Figure BDA0002299631790000034
and determining the positions of the human eyes and the positions of the highlight areas in the screen according to the coordinates of the human eye position points and the coordinates of the highlight area position points in the screen.
Optionally, the selecting a center position of the human eye and the position of the bright light source in the screen as the screen light reflection area includes:
each time an eye position point in the screen is selected, coordinates are defined as (X12, Y12), and a highlight region position point in the screen is selected, coordinates are defined as (X22, Y22);
the coordinates of a screen reflection point are calculated from each selected position point using the following formula (X3, Y3):
Figure BDA0002299631790000035
Figure BDA0002299631790000036
and determining the position of the light reflecting area in the screen according to the coordinates of the screen light reflecting points obtained by multiple calculations.
Optionally, the selecting a position point of a human eye in the screen is selecting a position point corresponding to a center point of a left eye in the screen or selecting a position point corresponding to a center point of a right eye in the screen;
and the step of selecting a position point of a highlight area in the screen is to sequentially select one position point of the highlight area in the screen.
Optionally, after the determining the position of the light reflecting area in the screen according to the coordinates of the plurality of screen light reflecting points, the method further includes the following steps:
judging whether the size of the screen light reflecting area is larger than a preset area size threshold or not;
and if so, selecting the central area of the light reflecting area as an updated light reflecting area according to a preset area size threshold.
Optionally, the method further comprises the steps of:
receiving a user selection of a position of a light reflecting area in the screen;
increasing the display brightness of the user-selected light-reflecting area in the screen.
The embodiment of the present invention further provides a system for dynamically adjusting brightness of a display device, which is used for implementing the method for dynamically adjusting brightness of a display device, and the system includes:
the image acquisition module is used for acquiring an image shot by a front camera of the display equipment;
the image detection module is used for detecting the positions of human eyes and highlight areas from the images, and the highlight areas are areas with the brightness meeting preset brightness conditions in the images;
the light reflection region positioning module is used for determining the position of a light reflection region in a screen according to the position of human eyes in the image and the position of the highlight region;
and the brightness adjusting module is used for improving the display brightness of the light reflecting area in the screen.
An embodiment of the present invention further provides a luminance dynamic adjustment device for a display device, including:
a processor;
a memory having stored therein executable instructions of the processor;
wherein the processor is configured to perform the steps of the dynamic brightness adjustment method for the display device via execution of the executable instructions.
The embodiment of the invention also provides a computer-readable storage medium for storing a program, and the program realizes the steps of the dynamic brightness adjustment method of the display device when being executed.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
The dynamic brightness adjusting method, the system, the equipment and the storage medium of the display equipment have the following advantages that:
according to the invention, the positions of human eyes and the position of a highlight area are automatically detected, the position of a screen reflection area is automatically determined, and the brightness is increased in the reflection area without integrally adjusting the brightness of the whole screen, so that the display effect is improved and the energy consumption is reduced, the brightness of other non-reflection areas can be kept unchanged, the eyes of a user cannot be stimulated due to over-brightness, and the damage degree to the eyes is reduced.
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Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
FIG. 1 is a flowchart illustrating a method for dynamically adjusting brightness of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a system for dynamically adjusting brightness of a display device according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating steps performed by various modules in a dynamic brightness adjustment system of a display device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the location of a face region and a highlight region in a captured image according to one embodiment of the present invention;
FIG. 5 is a schematic diagram of a screen onto which a face location point and a highlight region location point are projected according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a determination of a light reflection area in a screen after a face position and a highlight area are projected on the screen according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a hierarchical structure of an OLED display device according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of the row and column electrode distribution in an OLED display device in accordance with an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a luminance dynamic adjustment apparatus of a display apparatus according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
As shown in fig. 1, in an embodiment of the present invention, the present invention provides a method for dynamically adjusting brightness of a display device, including the following steps:
s100: acquiring an image shot by a front camera of display equipment;
s200: detecting the positions of human eyes and the positions of highlight areas from the images, wherein the highlight areas are areas with the brightness meeting preset brightness conditions in the images;
s300: determining the position of a light reflecting area in a screen according to the position of human eyes in the image and the position of the highlight area;
s400: the display brightness of the light reflecting area in the screen is improved.
According to the dynamic brightness adjusting method, the image in front of the screen is obtained through the step S100, the human eye position and the highlight area position are automatically detected through the step S200, the screen reflection area position is automatically determined through the step S300, then the brightness is increased in the reflection area through the step S400, the brightness of the whole screen does not need to be integrally adjusted, and therefore the display effect is improved and the energy consumption is reduced.
In this embodiment, the preset brightness condition is that the brightness of the pixel is greater than a preset brightness threshold, or that a difference between the brightness of the pixel and an average brightness value of the image is greater than a preset difference threshold. The highlight area is an area where a highlight light source (such as sunlight, light, etc.) is located. In other alternative embodiments, the preset brightness adjustment may also be set to other conditions, and when a pixel meets the preset brightness condition, the pixel belongs to a highlight pixel, and a plurality of adjacent highlight pixels may be collected into a highlight region. Specifically, when a plurality of dispersed highlight pixels are detected, when the size of a region formed by a plurality of adjacent highlight pixels meets a preset size requirement, the region formed by the adjacent highlight pixels is defined as a highlight region.
As shown in fig. 2 and fig. 3, an embodiment of the present invention further provides a system for dynamically adjusting luminance of a display device, which is used to implement the method for dynamically adjusting luminance of a display device, and the system includes:
the image acquisition module M100 is used for acquiring an image shot by a front camera of the display device;
the image detection module M200 is configured to detect a position of a human eye and a position of a highlight region from the image, where the highlight region is a region in which brightness in the image meets a preset brightness condition;
the light reflection region positioning module M300 is used for determining the position of a light reflection region in a screen according to the position of human eyes in the image and the position of the highlight region;
and the brightness adjusting module M400 is configured to increase the display brightness of the light reflecting area in the screen.
The dynamic brightness adjusting system acquires an image in front of a screen through the image acquisition module M100, automatically detects the positions of human eyes and a highlight area through the image detection module M200, automatically determines the position of a light reflecting area of the screen through the light reflecting area positioning module M300, and then increases the brightness in the light reflecting area through the brightness adjusting module M400 without integrally adjusting the brightness of the whole screen, so that the display effect is improved and the energy consumption is reduced.
As shown in fig. 3, in this embodiment, the step S300 of detecting the position of the human eye and the position of the highlight region from the image includes the steps of:
the image detection module M200 detects the left-eye center coordinates and the right-eye center coordinates in the image, detects the human face 12 in the image 11, and further detects the left-eye center point and the right-eye center point, where the left-eye center coordinates and the right-eye center coordinates are respectively noted as (X11), as shown in fig. 4L，Y11L) And (X11)R，Y11R)；
The image detection module M200 detects the coordinate range of the highlight region in the image, and as shown in fig. 4, detects the highlight region 13 in the image 11, and here, the coordinates of the upper left corner position point and the upper right corner position point of the highlight region 13 are respectively recorded as (X21)L，Y21L) And (X21)R，Y21R). In other embodiments, the shape of the highlight region may not be rectangular, but may also be triangular, circular, elliptical, rhombic, or the like, and the coordinates of a plurality of position points at the boundary or the vertex thereof may be detected, or the coordinates of a plurality of position points dispersed inside thereof may be detected, so as to define the range of the highlight region.
Further, the image detection module M200 may also detect the brightness value of the highlight region for use as a reference in subsequently adjusting the brightness.
As shown in fig. 3, in this embodiment, in the step S300, determining the position of the light reflection area in the screen according to the position of the human eye in the image and the position of the highlight area includes the following steps:
the light reflection region positioning module M300 calculates the distance represented by each pixel point in the image;
the light reflection region positioning module M300 obtains the distance represented by each pixel point in the screen of the display device;
the light reflection region positioning module M300 projects the position of the human eye and the position of the highlight light source in the image to the screen according to the distance represented by each pixel point in the image and the distance represented by each pixel point in the screen, and determines the position of the corresponding human eye and the position of the highlight region in the screen;
the light reflection area locating module M300 selects a center area of the position of the human eye and the position of the highlight light source in the screen as the light reflection area in the screen.
In this embodiment, the calculating the distance represented by each pixel point in the image includes the following steps:
calculating the position according to the left eye center coordinate and the right eye center coordinate in the imageA pupil distance r in the image; in particular, according to the formula
Figure BDA0002299631790000081
And (4) calculating.
And acquiring the actual pupil distance R of human eyes, and calculating the distance d1 represented by each pixel point in the image according to the actual pupil distance of the human eyes and the pupil distance in the image, wherein d1 is R/R. The actual interpupillary distance R of the human eyes may be a default value pre-stored in the system, or different values may be stored according to different users, or different values may be stored according to ages of different users, and the corresponding values may be obtained by identifying the user identity, the user age, and the like in the captured image.
In this embodiment, the obtaining the distance represented by each pixel point in the screen of the display device includes calculating the distance d2 represented by each pixel point in the screen of the display device by using the following formula:
Figure BDA0002299631790000082
where S represents the size of the screen in inches, Rh is the vertical resolution, and Rw is the horizontal resolution. For example, a 31.5 inch 2K resolution display screen has a dot spacing d2 of 0.2727 mm. The distance d2 may also be a pre-stored value in the system, fixed for each display device screen, without recalculation.
Further, in this embodiment, the determining the position of the corresponding human eye and the position of the highlight region in the screen includes projecting the position of the human eye and the position of the highlight region in the image into the screen. Specifically, as shown in fig. 5, the position of the human eye and the position of the highlight region are projected into the screen, and the coordinates in the projected screen corresponding to the position of the human eye and the position of the highlight region are calculated. In fig. 5, reference numeral 31 denotes an actual eye position point, which may be a left eye center point or a right eye center point, reference numeral 32 denotes an actual highlight region position point, which may be a boundary point or an inner point in a highlight region, and reference numeral 26 denotes a center point of a screen, and a two-dimensional coordinate system is established on the screen with the center point of the screen as a center. Reference numeral 25 denotes the position of the light reflection region position point determined from the human eye position point 31 and the highlight region position point 32.
Specifically, calculating the coordinates of the eye position point in the screen includes selecting the eye position point in the image, the coordinates being defined as (X11, Y11), projecting the eye position point into the screen, and calculating the coordinates of the eye position point in the screen according to the following formula (X12, Y12):
Figure BDA0002299631790000091
Figure BDA0002299631790000092
wherein d1 is the distance represented by each pixel in the image, and d2 is the distance represented by each pixel in the screen of the display device. The selected eye position point is the left eye center point or the right eye center point, and when the coordinates of the eye position point in the screen are calculated, the coordinates of the left eye center point in the screen and the coordinates of the right eye center point in the screen are calculated in sequence by adopting the formula.
And calculating coordinates of a highlight region position point in the screen includes selecting a highlight region position point in the image, the coordinates being defined as (X21, Y21), projecting the highlight region position point into the screen, and calculating coordinates of the highlight region position point in the screen according to the following formula (X22, Y22):
Figure BDA0002299631790000093
Figure BDA0002299631790000094
and determining the positions of the human eyes and the positions of the highlight areas in the screen according to the coordinates of the human eye position points and the coordinates of the highlight area position points in the screen. The highlight area position point selected here is one position point in the highlight area, and the coordinates of each highlight area position point in the screen are calculated sequentially by adopting the formula, so that the projection area of the whole highlight area in the screen can be obtained.
In this embodiment, the selecting a center position of the human eye and the position of the bright light source in the screen as the screen light reflection area includes the steps of:
each time an eye position point in the screen is selected, coordinates are defined as (X12, Y12), and a highlight region position point in the screen is selected, coordinates are defined as (X22, Y22);
the coordinates of a screen reflection point are calculated from each selected position point using the following formula (X3, Y3):
Figure BDA0002299631790000095
Figure BDA0002299631790000096
and determining the position of the light reflecting area in the screen according to the coordinates of the screen light reflecting points obtained by multiple calculations.
In this embodiment, selecting a position point of one eye in the screen is to select a position point corresponding to a center point of a left eye in the screen or select a position point corresponding to a center point of a right eye in the screen; and the step of selecting a position point of a highlight area in the screen is to sequentially select one position point of the highlight area in the screen. Specifically, as shown in fig. 6, in the screen 21, the face position point 22 includes a left-eye center point (X12)L，Y12L) And right eye center point (X12)R，Y12R). Highlight region 23 includes a plurality of highlight region position points, only the upper left corner position point (X22) being shown hereL，Y22L) And the upper right corner position point (X22)R，Y22R). When the coordinates of a plurality of reflection points (X3, Y3) in the reflection area 24 are calculated according to the above formula, the coordinates (X12, Y12) (left eye center point or right eye center point coordinates) and a height of one face position point are selected at a timeThe coordinates (X22, Y22) of the bright region position points (boundary position points, vertex position points or internal position points in the highlight region) are calculated to obtain the coordinates (X3, Y3) of one reflective point, and after the coordinates of a plurality of reflective points are obtained through multiple calculations, one reflective region 24 can be formed according to the plurality of reflective points.
Further, after the position of the light reflecting area in the screen is determined according to the coordinates of the screen light reflecting points, whether the size of the screen light reflecting area is larger than a preset area size threshold value is judged; and if so, selecting the central area of the light reflecting area as an updated light reflecting area according to a preset area size threshold. Namely, if the calculated size of the screen light reflecting area is too large, the light reflecting area is limited according to a preset area size threshold. In the prior art, the size threshold may not be set, and when the light-reflecting region is large, the brightness of a large light-reflecting region may be increased.
In this embodiment, the display device is preferably an AMOLED (Active-matrix organic light-emitting diode) display device. When the brightness adjusting module M400 adjusts the brightness of the reflective region through the step S400, the brightness of each corresponding pixel point in the display device may be adjusted. In addition, the display device may also be a PMOLED (Passive matrix organic light emitting diode) display device, and different brightness may also be achieved by scanning line by line in a row-column crossing manner. Fig. 7 is a schematic structural diagram of an OLED display panel. Wherein reference numeral 41 denotes a cathode, reference numeral 42 denotes an OLED organic layer, reference numeral 43 denotes an anode, and reference numeral 44 denotes a substrate, which is merely an example and not a limitation of the scope of the present invention. Fig. 8 is a schematic diagram of the distribution of row and column electrodes in an OLED display device.
Here take the SSD1306 driver chip as an example, where there are 128 rows of anodes and 64 rows of cathodes, and each intersection is a pixel. When the scanning is carried out line by line, the brightness is improved when the pixel points corresponding to the light reflecting areas are met. The pixel control command of the OLED display device is shown in table 1 below, where command 1 is a brightness control command and command 13/14 is a set scan start row/column address command.
TABLE 1 Pixel control Command Table
Figure BDA0002299631790000111
In this embodiment, the method for dynamically adjusting the brightness of the display device further includes the following steps:
and receiving the position selection of the user on the light reflecting area in the screen, and improving the display brightness of the light reflecting area selected by the user in the screen. That is, when there is an error in the automatic brightness adjustment performed in steps S100 to S400, a marking tool such as a mouse may be used to mark a portion where the brightness is not enhanced, which may be complementary to the automatic brightness adjustment.
The embodiment of the invention also provides a luminance dynamic adjusting device of the display device, which comprises a processor; a memory having stored therein executable instructions of the processor; wherein the processor is configured to perform the steps of the dynamic brightness adjustment method for the display device via execution of the executable instructions.
As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or program product. Thus, various aspects of the invention may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" platform.
An electronic device 600 according to this embodiment of the invention is described below with reference to fig. 9. The electronic device 600 shown in fig. 9 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present invention.
As shown in fig. 9, the electronic device 600 is embodied in the form of a general purpose computing device. The components of the electronic device 600 may include, but are not limited to: at least one processing unit 610, at least one memory unit 620, a bus 630 connecting the different platform components (including the memory unit 620 and the processing unit 610), a display unit 640, etc.
Wherein the storage unit stores program code executable by the processing unit 610 to cause the processing unit 610 to perform steps according to various exemplary embodiments of the present invention described in the above-mentioned electronic prescription flow processing method section of the present specification. For example, the processing unit 610 may perform the steps as shown in fig. 1.
The storage unit 620 may include readable media in the form of volatile memory units, such as a random access memory unit (RAM)6201 and/or a cache memory unit 6202, and may further include a read-only memory unit (ROM) 6203.
The memory unit 620 may also include a program/utility 6204 having a set (at least one) of program modules 6205, such program modules 6205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
Bus 630 may be one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The electronic device 600 may also communicate with one or more external devices 700 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 600, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 600 to communicate with one or more other computing devices. Such communication may occur via an input/output (I/O) interface 650. Also, the electronic device 600 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via the network adapter 660. The network adapter 660 may communicate with other modules of the electronic device 600 via the bus 630. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the electronic device 600, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage platforms, to name a few.
The embodiment of the invention also provides a computer-readable storage medium for storing a program, and the program realizes the steps of the dynamic brightness adjustment method of the display device when being executed. In some possible embodiments, aspects of the present invention may also be implemented in the form of a program product comprising program code for causing a terminal device to perform the steps according to various exemplary embodiments of the present invention described in the above-mentioned electronic prescription flow processing method section of this specification, when the program product is run on the terminal device.
Referring to fig. 10, a program product 800 for implementing the above method according to an embodiment of the present invention is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited in this regard and, in the present document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable storage medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable storage medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
The dynamic brightness adjusting method, the system, the equipment and the storage medium of the display equipment have the following advantages that:
according to the invention, the positions of human eyes and the position of a highlight area are automatically detected, the position of a screen reflection area is automatically determined, and the brightness is increased in the reflection area without integrally adjusting the brightness of the whole screen, so that the display effect is improved and the energy consumption is reduced, the brightness of other non-reflection areas can be kept unchanged, the eyes of a user cannot be stimulated due to over-brightness, and the damage degree to the eyes is reduced.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (14)

1. A dynamic brightness adjustment method for a display device is characterized by comprising the following steps:
acquiring an image shot by a front camera of display equipment;
detecting the positions of human eyes and the positions of highlight areas from the images, wherein the highlight areas are areas with the brightness meeting preset brightness conditions in the images;
determining the position of a light reflecting area in a screen according to the position of human eyes in the image and the position of the highlight area;
the display brightness of the light reflecting area in the screen is improved.
2. The method according to claim 1, wherein the preset brightness condition is that the brightness of the pixel is greater than a preset brightness threshold, or that a difference between the brightness of the pixel and an average brightness value of the image is greater than a preset difference threshold.
3. The dynamic brightness adjustment method according to claim 1, wherein the detecting the position of the human eye and the position of the highlight region from the image comprises:
detecting a left eye center coordinate and a right eye center coordinate in the image;
detecting a coordinate range of a highlight region in the image.
4. The dynamic brightness adjustment method of a display device according to claim 3, wherein the determining the position of the light reflection area in the screen according to the position of the human eye in the image and the position of the highlight area comprises the following steps:
calculating the distance represented by each pixel point in the image;
acquiring the distance represented by each pixel point in the screen of the display equipment;
projecting the positions of the human eyes and the positions of the high-brightness light sources in the image to a screen according to the distance represented by each pixel point in the image and the distance represented by each pixel point in the screen, and determining the positions of the corresponding human eyes and the positions of the high-brightness areas in the screen;
selecting a central area of the position of the human eye and the position of the highlight light source in the screen as a light reflection area in the screen.
5. The dynamic brightness adjustment method according to claim 4, wherein the step of calculating the distance represented by each pixel point in the image comprises the following steps:
calculating the interpupillary distance r in the image according to the left eye center coordinate and the right eye center coordinate in the image;
and acquiring the actual pupil distance R of human eyes, and calculating the distance d1 represented by each pixel point in the image according to the actual pupil distance of the human eyes and the pupil distance in the image, wherein d1 is R/R.
6. The dynamic brightness adjustment method according to claim 4, wherein the obtaining of the distance represented by each pixel point in the screen of the display device comprises calculating the distance d2 represented by each pixel point in the screen of the display device by using the following formula:
Figure FDA0002299631780000021
where S represents the size of the screen in inches, Rh is the vertical resolution, and Rw is the horizontal resolution.
7. The dynamic brightness adjustment method of the display device according to claim 4, wherein the determining the position of the corresponding human eye and the position of the highlight area in the screen comprises the following steps:
selecting a human eye position point in the image, wherein the coordinates are defined as (X11, Y11), projecting the human eye position point into the screen, and calculating the coordinates (X12, Y12) of the human eye position point in the screen according to the following formula:
Figure FDA0002299631780000022
Figure FDA0002299631780000023
wherein d1 is the distance represented by each pixel point in the image, and d2 is the distance represented by each pixel point in the screen of the display device;
selecting a highlight region position point in said image, the coordinates being defined as (X21, Y21), projecting the highlight region position point into said screen, the coordinates (X22, Y22) of the highlight region position point in said screen being calculated according to the following formula:
Figure FDA0002299631780000024
Figure FDA0002299631780000025
and determining the positions of the human eyes and the positions of the highlight areas in the screen according to the coordinates of the human eye position points and the coordinates of the highlight area position points in the screen.
8. The dynamic brightness adjustment method of a display device according to claim 4, wherein said selecting a center position of a human eye and a position of a bright light source in said screen as a screen light reflection area comprises the steps of:
each time an eye position point in the screen is selected, coordinates are defined as (X12, Y12), and a highlight region position point in the screen is selected, coordinates are defined as (X22, Y22);
the coordinates of a screen reflection point are calculated from each selected position point using the following formula (X3, Y3):
Figure FDA0002299631780000031
Figure FDA0002299631780000032
and determining the position of the light reflecting area in the screen according to the coordinates of the screen light reflecting points obtained by multiple calculations.
9. The dynamic brightness adjustment method according to claim 8, wherein the selecting a position point of a human eye in the screen is selecting a position point corresponding to a center point of a left eye in the screen or selecting a position point corresponding to a center point of a right eye in the screen;
and the step of selecting a position point of a highlight area in the screen is to sequentially select one position point of the highlight area in the screen.
10. The dynamic brightness adjustment method of a display device according to claim 8, wherein after determining the position of the light reflection area in the screen according to the coordinates of the plurality of screen light reflection points, the method further comprises the following steps:
judging whether the size of the screen light reflecting area is larger than a preset area size threshold or not;
and if so, selecting the central area of the light reflecting area as an updated light reflecting area according to a preset area size threshold.
11. The dynamic brightness adjustment method for a display device according to claim 1, further comprising the steps of:
receiving a user selection of a position of a light reflecting area in the screen;
increasing the display brightness of the user-selected light-reflecting area in the screen.
12. A system for dynamically adjusting brightness of a display device, the system being used for implementing the method for dynamically adjusting brightness of a display device according to any one of claims 1 to 11, the system comprising:
the image acquisition module is used for acquiring an image shot by a front camera of the display equipment;
the image detection module is used for detecting the positions of human eyes and highlight areas from the images, and the highlight areas are areas with the brightness meeting preset brightness conditions in the images;
the light reflection region positioning module is used for determining the position of a light reflection region in a screen according to the position of human eyes in the image and the position of the highlight region;
and the brightness adjusting module is used for improving the display brightness of the light reflecting area in the screen.
13. A luminance dynamic adjustment apparatus of a display apparatus, comprising:
a processor;
a memory having stored therein executable instructions of the processor;
wherein the processor is configured to perform the steps of the method of dynamic adjustment of brightness of a display device of any of claims 1 to 11 via execution of the executable instructions.
14. A computer-readable storage medium storing a program, wherein the program is configured to implement the steps of the method for dynamically adjusting the brightness of a display device according to any one of claims 1 to 11 when executed.
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