CN113053324A - Backlight control method, device, equipment, system and storage medium - Google Patents
Backlight control method, device, equipment, system and storage medium Download PDFInfo
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- CN113053324A CN113053324A CN202110276977.6A CN202110276977A CN113053324A CN 113053324 A CN113053324 A CN 113053324A CN 202110276977 A CN202110276977 A CN 202110276977A CN 113053324 A CN113053324 A CN 113053324A
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
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Abstract
The embodiment of the invention provides a backlight control method, a device, equipment, a system and a storage medium, wherein the method comprises the following steps: the method comprises the steps of obtaining pixel information corresponding to a display picture of the display equipment, detecting a black filling area in the display picture according to the pixel information, determining main color information of the display picture according to a detection result, and performing backlight control according to the main color information. The backlight control method, the device, the equipment, the system and the storage medium provided by the embodiment of the invention can effectively reduce the influence of a black filling area in a display picture on the calculation of the main color information, improve the accuracy of determining the main color information of the picture and improve the backlight control effect.
Description
Technical Field
The present invention relates to the field of backlight control technologies, and in particular, to a backlight control method, apparatus, device, system, and storage medium.
Background
When watching television pictures, a user has certain requirements on the surrounding environment when watching the pictures, besides the requirements on the definition and the brightness of the screen pictures. Therefore, the color of the light output by the backlight of the television has a certain influence on the viewing experience of the user.
In the prior art, the light emitting color of the backlight lamp can be controlled according to the color of the screen display picture, but certain errors exist in calculating the color of the screen display picture under the influence of a black filling area in the display picture. Therefore, the accuracy of detecting the picture color is low, resulting in poor control effect of the backlight.
Disclosure of Invention
The embodiment of the invention provides a backlight control method, a device, equipment, a system and a storage medium, which are used for solving the technical problem of poor backlight control effect caused by low accuracy of detecting picture colors in the prior art.
In a first aspect, an embodiment of the present invention provides a backlight control method, where the method includes:
acquiring pixel information corresponding to a display picture of display equipment;
detecting a black filling area in the display picture according to the pixel information;
determining main color information of the display picture according to the detection result;
and carrying out backlight control according to the main color information.
Optionally, determining the main color information of the display image according to the detection result includes:
determining main color information of the display picture according to pixel information corresponding to a picture source display area in the display picture;
and the film source display area is the other area except the black filling area in the display picture.
Optionally, detecting a black filling area in the display picture according to the pixel information includes:
and traversing each pixel point in the display picture, and if the brightness value of the pixel point is determined to be smaller than a first preset threshold according to the pixel information corresponding to the pixel point, determining that the pixel point belongs to a black filling area.
Optionally, detecting a black filling area in the display picture according to the pixel information includes:
traversing each pixel point in the display picture, and if the brightness value of the pixel point is determined to be smaller than a first preset threshold value according to the pixel information corresponding to the pixel point, adding the pixel point into a low-brightness pixel point set;
determining a connected region formed by the pixels in the low-brightness pixel point set according to the position information of each pixel in the low-brightness pixel point set;
and judging whether the connected region belongs to a black filling region or not according to the boundary of the connected region.
Optionally, determining whether the connected region belongs to a black filling region according to the boundary information of the connected region, including:
and if the distance between the boundary of the connected region and the boundary of the display picture is smaller than a second preset threshold value, determining that the connected region belongs to a black filling region.
Optionally, the obtaining of pixel information corresponding to a display screen of the display device includes:
receiving a shot image sent by a camera for shooting the display picture;
and determining the boundary of the display picture according to the shot image, and determining the pixel information corresponding to the display picture according to the boundary.
Optionally, the display screen is divided into at least one region; determining the main color information of the display picture according to the detection result, wherein the determining comprises the following steps:
determining main color information corresponding to each area in the display picture according to the detection result;
correspondingly, the backlight control is performed according to the main color information, and the backlight control method comprises the following steps:
and controlling the light color of the backlight lamp corresponding to the region according to the main color information corresponding to each region.
In a second aspect, an embodiment of the present invention provides a backlight control apparatus, including:
the acquisition module is used for acquiring pixel information corresponding to a display picture of the display equipment;
the detection module is used for detecting a black filling area in the display picture according to the pixel information;
the determining module is used for determining the main color information of the display picture according to the detection result;
and the processing module is used for carrying out backlight control according to the main color information.
In a third aspect, an embodiment of the present invention provides a display device, including:
a screen for displaying a picture;
a controller for implementing the backlight control method according to any one of the above first aspect;
and the backlight lamp is connected with the controller and used for outputting the light color matched with the main color of the display picture of the screen under the control of the controller.
Optionally, the display device further includes:
and the camera is connected with the controller and is used for shooting the picture displayed by the screen and sending the picture to the controller.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the backlight control method according to any one of the first aspect above.
In a fifth aspect, an embodiment of the present invention provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the computer program implements the backlight control method according to any one of the first aspect.
According to the backlight control method, the device, the equipment, the system and the storage medium provided by the embodiment of the invention, the pixel information corresponding to the display picture of the display equipment is obtained, the black filling area in the display picture is detected according to the pixel information, the main color information of the display picture is determined according to the detection result, and the backlight control is carried out according to the main color information, so that the influence of the black filling area in the display picture on the calculation of the main color information can be effectively reduced, the accuracy of determining the main color information of the picture is improved, and the backlight control effect is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present invention;
fig. 2 is a schematic flowchart of a backlight control method according to an embodiment of the present invention;
FIG. 3 is a schematic view of a connected region according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a display screen according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a captured image of a backlight control method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a backlight control device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention.
With the above figures, certain embodiments of the invention have been illustrated and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it by those skilled in the art with reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention.
The following describes the technical solution of the present invention and how to solve the above technical problems with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
The following explains an application scenario provided by an embodiment of the present invention: the scheme provided by the embodiment of the invention relates to a television backlight lamp. Generally, a Light Emitting Diode (LED) strip is used as a backlight of a television, and the LED strip is adhered to the back of the television, that is, a lamp bead of the LED strip points to a wall on the back of the television, when the LED strip emits Light of different colors, the Light of the LED strip is emitted by reflection of the wall, so as to create a background Light atmosphere suitable for a television playing picture. The backlight lamp of the television can reduce the contrast between the picture of the television screen and the surrounding environment, so that the picture of the screen is softer, and the backlight lamp plays a certain role in protecting eyesight.
Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present invention. As shown in fig. 1, when a user watches a television, a camera shoots a screen display picture, pixel information of the display picture is obtained and sent to a controller, the controller can divide the obtained picture into different regions, the picture is processed according to the different regions, main color information displayed in each region is determined and sent to a backlight, the backlight outputs appropriate LED light colors, the light is shone on a background wall of the television, the picture atmosphere when the user watches the picture is adjusted, and the visual experience when the user watches the picture is improved.
When the aspect ratio of the source picture played by the television is different from the aspect ratio of the television screen itself and the aspect ratio of the source picture is maintained while the source picture is played, black filled regions appear at the upper and lower edges or the left and right edges of the screen.
In some techniques, when acquiring all pictures of a tv screen and calculating the main color of the picture in the relevant area, black filled area pixels at the edge are included in the calculation range of the main color of the calculation area, and since the main line of sight of the user is placed at the picture source picture, the obtained backlight color has a large difference from the picture color perceived by the user.
Specifically, black filled regions can affect the color output from the television backlight, deviating from the dominant color of the picture in the corresponding region of the picture source. For example, when the screen aspect ratio of a television is 16: 9 or 16: in case 10, the aspect ratio of the play screen is 4: when 3 DVD (Digital Versatile Disc) is used as a source, black filled regions appear on the left and right sides of the display screen of the tv screen, and the black filled regions on the left and right sides affect the color output by the tv backlight.
Therefore, an embodiment of the present invention provides a backlight control method, which, after a screen display picture is obtained, filters a black filled area in the screen display picture according to pixel information of the obtained display picture, and uses a remaining picture as a calculation range of a picture main color to obtain the main color of the display picture. And controlling the backlight lamp to emit corresponding colors according to the obtained main colors.
The method has the advantages that the black filling area is filtered, the main color of the residual picture is calculated, the main color which is matched with the display picture is obtained, the influence of the black filling area on the calculation of the main color in the display picture can be effectively reduced, the accuracy of determining the main color of the picture is improved, the backlight control effect is improved, the effect that the picture color atmosphere created by the television backlight and the visual experience of a user watching the picture source picture are fused is achieved, and the user impression effect is better.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The features of the embodiments and examples described below may be combined with each other without conflict between the embodiments.
Fig. 2 is a flowchart illustrating a backlight control method according to an embodiment of the present invention. As shown in fig. 2, the method in this embodiment may include:
step 201, acquiring pixel information corresponding to a display screen of the display device.
The display device may be any device capable of displaying a screen. For convenience of description, the television is taken as an example in the present embodiment for description.
Specifically, pixel information corresponding to a display screen of the television display screen may be acquired by a video camera or a set-top box. The display frame may include a plurality of pixel points. A pixel refers to an image composed of a matrix of pixel arrangements, each pixel being referred to as a pixel for short. Each pixel point has its corresponding pixel information, which may include any type of pixel information, such as rgb (red Green blue), YUV, luminance value, and the like.
Optionally, according to the pixel information of the display picture, it may be determined whether each pixel in the display picture is a black pixel, so as to detect a black filling region in the display picture.
Optionally, for each pixel, when the corresponding brightness value is lower than a certain value, it may be considered that the pixel is possibly in the black filling region, and when the brightness value is higher than the certain value, it may be considered that the pixel is not in the black filling region.
And step 203, determining the main color information of the display picture according to the detection result.
Optionally, if the black filled region is detected, the black filled region may be ignored or weakened when calculating the main color information, for example, the black filled region may be filtered out, and the main color information may be calculated for the remaining pictures; if no black filled area is detected, indicating that the display may not be black filled, the calculation of the dominant color information may be performed directly from the entire display.
The main color information refers to a color corresponding to the maximum value of the number of pixel points of the same color in one image or a local image area. Specifically, the number of pixel points corresponding to each color may be counted, and the color corresponding to the maximum value of the counted number of pixel points is the main color information. For example, in an image, there are 200 pixels, including 130 blue pixels, 40 red pixels, and 30 purple pixels, and the number of blue pixels is the largest, so that the main color of the image is blue.
And 204, performing backlight control according to the main color information.
Optionally, after the main color of the display picture is obtained, the corresponding light color of the television backlight is controlled, different light colors of the LEDs are output, and the light is mapped onto the backlight wall to create a proper light effect for the screen display picture.
Specifically, if the obtained main color information of the display picture is red, the television backlight lamp can emit red LED light, the red light is irradiated on the television background wall, and the television background wall reflects the color to the periphery of the television screen to render proper background light for the display picture.
The method provided by the embodiment can obtain the pixel information corresponding to the display picture of the display device, detect the black filling area in the display picture according to the pixel information, determine the main color information of the display picture according to the detection result, and perform backlight control according to the main color information, thereby effectively reducing the influence of the black filling area in the display picture on the calculation of the main color information, improving the accuracy of determining the main color information of the picture, and improving the backlight control effect.
On the basis of the technical solution provided in the foregoing embodiment, optionally, determining the main color information of the display screen according to the detection result includes:
determining main color information of the display picture according to pixel information corresponding to a picture source display area in the display picture; and the film source display area is the other area except the black filling area in the display picture.
In this embodiment, the display screen of the television may include a film source display region and a black filling region, and the output color of the backlight of the television may be calculated from the pixel information in the film source screen, without depending on the entire content in the display screen. This requires filtering out the black filled regions in the display and calculating the dominant color of the film source picture.
Specifically, if black filling regions appear on the upper side and the lower side of a television display picture, it can be detected that a film source part in the display picture is other regions except the black filling regions on the upper side and the lower side in the display picture, the black filling regions on the upper side and the lower side are filtered, and pixel points of the film source picture are calculated to obtain main colors corresponding to the display picture.
The black filling area part is filtered, the film source picture in the display picture is calculated, the main color corresponding to the film source picture is obtained, the obtained light color output by the television backlight lamp is more consistent with the film source picture played by the television, and the user experience degree is improved.
Optionally, detecting a black filling area in the display picture according to the pixel information includes:
and traversing each pixel point in the display picture, and if the brightness value of the pixel point is determined to be smaller than a first preset threshold according to the pixel information corresponding to the pixel point, determining that the pixel point belongs to a black filling area.
Optionally, a value of a first preset threshold is determined, the obtained brightness value of each pixel point is compared with the first preset threshold, and if the brightness value of the pixel point is smaller than the first preset threshold, the pixel point is considered to belong to a black filling area.
Optionally, the pixel information of each pixel point may include a brightness value of the pixel point, and by comparing a relationship between the brightness value in the pixel information and a first preset threshold, it may be determined whether the pixel point belongs to a black filling region. Or, the pixel information of the pixel point may not include a brightness value, for example, if the pixel information is an RGB value, the RGB value may be converted into the brightness value, and then the brightness value is compared with the first preset threshold.
The first preset threshold may be a fixed threshold, or the first preset threshold may also be dynamically adjusted according to an actual situation.
The brightness value of the pixel point is irrelevant to the hue, the brightness value of the pixel is between 0 and 255, the brightness of the pixel close to 255 is higher, the brightness of the pixel close to 0 is lower, and the rest part belongs to the middle tone. 255 is white and 0 is black.
Optionally, for the case that the brightness value is greater than the first preset threshold, the pixel point does not belong to the black filling area, and the main color of the picture is calculated according to a normal algorithm.
Specifically, assuming that the first preset threshold is 2, it is determined whether the pixel brightness of each pixel in the display image is less than 2, and if a certain brightness value is less than 2, the pixel is considered to belong to a black filling area, and the pixel needs to be ignored when calculating the main color information. And if the brightness value is larger than 2, the pixel point is not considered to belong to the black filling area.
In this embodiment, when the main color information is calculated, for each pixel point in the display image, if the brightness value of the pixel point is lower than the first preset threshold, the pixel point is considered to belong to the black filling area, the pixel point is ignored, the next pixel point is calculated until the pixel point of the whole display image is traversed, and the corresponding color information is output to control the backlight.
In another optional implementation manner, detecting a black filling area in the display picture according to the pixel information includes:
traversing each pixel point in the display picture, and if the brightness value of the pixel point is determined to be smaller than a first preset threshold value according to the pixel information corresponding to the pixel point, adding the pixel point into a low-brightness pixel point set; determining a connected region formed by the pixels in the low-brightness pixel point set according to the position information of each pixel in the low-brightness pixel point set; and judging whether the connected region belongs to a black filling region or not according to the boundary of the connected region.
The connected region may be a region formed by a plurality of adjacent pixels. If the pixel points A and B are adjacent, the A and B are called to be communicated. And if A is communicated with B and B is communicated with C, A is communicated with C. Visually, the dots that are connected to each other form one region, while the dots that are not connected form a different region. Such a set of all points that are connected to each other is called a connected region.
Fig. 3 is a schematic diagram of a communication area according to an embodiment of the present invention. As shown in fig. 3, the shaded and blank sections represent different colors, and for the blank section, if four neighbors are considered, there are three connected regions in the figure; if eight neighbors are considered, there are two connected regions in the figure.
The four adjacent points refer to adjacent points in four directions of up, down, left and right, and the eight adjacent points refer to adjacent points in eight directions of up, down, left, right, left up, left down, right up and right down.
In this embodiment, the pixels in the display frame may be traversed, and if the brightness value of a pixel is smaller than the first preset threshold, the corresponding pixel is brought into the low-brightness point set. And calculating a connected region formed by the pixel points according to the positions of the pixel points in the low-brightness point set, and judging whether the connected region belongs to a black filling region according to the boundary of the connected region. If the boundary of the connected region is at the edge of the display picture, the connected region is considered to be in the black filling region.
Optionally, for the condition that the brightness value is greater than the first preset threshold, the pixel does not belong to the black filling region. Regarding isolated low-brightness pixel points which do not form a connected region in the low-brightness set, the pixel points are also considered not to belong to the black filling region.
By constructing a low-brightness pixel point set and detecting the boundary of the connected region according to the set, a black filling region at the edge of a display picture can be accurately filtered, dark picture content in a picture source picture range is reserved, background light more consistent with the display picture content is obtained, and the detection accuracy is effectively improved.
Optionally, determining whether the connected region belongs to a black filling region according to the boundary information of the connected region, including:
and if the distance between the boundary of the connected region and the boundary of the display picture is smaller than a second preset threshold value, determining that the connected region belongs to a black filling region.
And the value of the second preset threshold can be adjusted according to the actual situation.
In this embodiment, the relationship between the connected region boundary and the display screen boundary is determined, and the specific position of the connected region is determined. Specifically, the boundary coordinates of the connected region may be calculated, and the distance difference between the coordinates of the connected region and the boundary coordinates of the display frame is determined, and if the distance difference between the boundary coordinates of the connected region and the boundary coordinates of the display frame is smaller than a certain threshold, it is determined that the connected region belongs to the black filled region; and if the distance difference between the boundary coordinates of the connected region and the boundary coordinates of the display frame is larger than a certain threshold value, the connected region is considered to be positioned in the film source display region instead of the black filling region.
Fig. 4 is a schematic diagram of a display screen provided in this embodiment. As shown in fig. 4, in the present embodiment, it is assumed that the first preset threshold is 1 and the second preset threshold is 100, and an (x, y) coordinate system is established by using a central point of a lower end of the display screen of the television, and one pixel represents one unit distance.
If 10000 × 8000 pixels exist on the display, the coordinates of the four corners of the display are (5000, 0), (5000, 8000), (-5000, 0), (-5000, 8000) respectively. The method comprises the steps of converting pixel information of pixel points in a display picture into corresponding brightness values, searching the brightness values smaller than a first preset threshold value, and calculating a communication area formed by the pixel points according to the pixel point coordinates smaller than the first preset threshold value. It is assumed that the vertex coordinates of the connected region on the right side in the display screen are (5000, 0), (4910, 0), (5000, 8000), (4910, 8000) respectively, based on the established coordinate system. And if the distance between the boundary coordinate of the connected region and the boundary coordinate of the display screen is less than 100, the connected region is a black filling region. The corresponding left connected component has vertex coordinates (-5000, 0), (-4910, 0), (-5000, 8000), (-4910, 8000), and the left connected component is also obtained as a black filled component. The boundary coordinates of the connected region in the middle of the display screen are (100, 2000), (100, 2500), (200, 2000) and (200, 2500), and if the distance between the boundary coordinates of the middle connected region and the boundary coordinates of the display screen is greater than 100, the connected region is not considered to be a black filled region.
Optionally, a connected region formed in a dark region in the display screen is not necessarily a regular connected region, and may be an irregular connected region, and it is necessary to calculate each boundary coordinate of the connected region, determine a distance between the boundary coordinate and the displayed page, and obtain whether the connected region is a black filled region.
The specific position of the connected region can be accurately obtained by judging the distance between the boundary coordinate of the connected region and the boundary coordinate of the display picture, so that whether the connected region belongs to the black filling region or not can be more accurately obtained.
Optionally, it may be further determined whether the connected region is full of the edge of the display picture according to the boundary coordinates of the connected region, and if the connected region is not full of the display picture, the connected region is determined not to belong to the black filling region and to belong to the picture source picture region, so as to further improve the accuracy of detection.
Optionally, the obtaining of pixel information corresponding to a display screen of the display device includes:
receiving a shot image sent by a camera for shooting the display picture;
and determining the boundary of the display picture according to the shot image, and determining the pixel information corresponding to the display picture according to the boundary.
In this embodiment, when the camera is mounted, the mounting position of the camera may be determined first. The position of the camera is required to satisfy that the image shot by the camera contains all display pictures. After the camera shoots the screen picture of the television, the shot image can be detected, and a plurality of marking points of the display picture are found, so that the boundary of the display picture is determined and is used for acquiring the pixel information of the display picture in the subsequent use process. For example, four vertices of the display and the center position of the top edge may be labeled, resulting in five labeled points.
Fig. 5 is a schematic diagram of a captured image of a backlight control method according to an embodiment of the present invention. As shown in fig. 5, in the actual use process, the boundary point of the image captured by the camera is abcd, five labeled points in the image are found to be ABCDE, and the labeled points can determine the display screen to obtain the pixel information of the display screen.
By detecting the shot image, the boundary range of the display picture can be accurately determined, and the accuracy of extracting the pixel information of the display picture is improved.
Optionally, the picture played by the television can be input into the set-top box through the video adapter box or the control box, and the set-top box acquires the display picture of the television and then sends the display picture to the controller.
Optionally, the display screen is divided into at least one region; determining the main color information of the display picture according to the detection result, wherein the determining comprises the following steps:
determining main color information corresponding to each area in the display picture according to the detection result;
correspondingly, the backlight control is performed according to the main color information, and the backlight control method comprises the following steps:
and controlling the light color of the backlight lamp corresponding to the region according to the main color information corresponding to each region.
In the embodiment, the display screen of the television can be divided into a plurality of areas according to actual needs. The plurality of regions may be arbitrarily divided into the entire display screen, and are not affected by the black fill region and the slice source display region.
Optionally, the display screen may be divided into a left area and a right area; it can also be divided into three regions including: a television top region, a lower left region and a lower right region; it can also be divided into five regions including: the upper part is divided into three areas, namely a left area, a middle area and a right area, and the lower part is divided into a left area and a right area. Since the display screen can be divided into a plurality of regions, each region determines one of the primary color information based on the detection result. Correspondingly, one or more backlight lamps are correspondingly arranged in each area. Different areas correspond to different main colors, and the backlight lamps in the areas are controlled to display corresponding LED lamp colors. The more the divided areas are, the more the obtained backlight effect is close to the content of the picture source picture.
By dividing the display picture into different areas and judging different main colors for the different areas, the obtained backlight color is more consistent with the color atmosphere of the television picture source picture, and the backlight control precision and the backlight display effect are improved.
Optionally, when the main color information is calculated, the number of the pixel points corresponding to each color may be directly calculated, and the color with the largest number may be selected as the main color. The dominant color information may also be determined by a blurring process. Specifically, RGB values of all pixels in a certain region may be obtained, the RGB values are input into a compression mapping function (the function may map the RGB values into an interval with a smaller range, for example, the function may be calculated by dividing a color value by N, taking a quotient obtained by the division as an output result, where N > 1), counting the number of times each value appears in the result, and for the value with the largest number of times, processing with an inverse function of the function to obtain the RGB values of the main colors in the region. Under the condition of multi-region control, all regions are traversed in sequence to obtain the RGB value of the main color of each region, and the backlight lamps of the regions are controlled to output corresponding LED lamp light colors.
Through fuzzification processing of multiple colors, similar colors can be used for counting main color information as the same color, so that the main color information obtained through counting is more fit with information observed by human eyes, and the backlight display effect is improved.
Fig. 6 is a schematic structural diagram of a backlight control device according to an embodiment of the present invention. As shown in fig. 6, the backlight control device provided in this embodiment may include:
an obtaining module 601, configured to obtain pixel information corresponding to a display screen of a display device;
a detecting module 602, configured to detect a black filling area in the display frame according to the pixel information;
a determining module 603, configured to determine, according to the detection result, main color information of the display screen;
and a processing module 604, configured to perform backlight control according to the primary color information.
Optionally, the determining module 603 is specifically configured to:
determining main color information of the display picture according to pixel information corresponding to a picture source display area in the display picture;
and the film source display area is the other area except the black filling area in the display picture.
Optionally, the detecting module 602 is specifically configured to:
and traversing each pixel point in the display picture, and if the brightness value of the pixel point is determined to be smaller than a first preset threshold according to the pixel information corresponding to the pixel point, determining that the pixel point belongs to a black filling area.
Optionally, the detecting module 602 is specifically configured to:
traversing each pixel point in the display picture, and if the brightness value of the pixel point is determined to be smaller than a first preset threshold value by pixel information corresponding to the pixel point, adding the pixel point into a low-brightness pixel point set;
determining a connected region formed by the pixels in the low-brightness pixel point set according to the position information of each pixel in the low-brightness pixel point set;
and judging whether the connected region belongs to a black filling region or not according to the boundary of the connected region.
Optionally, when determining whether the connected region belongs to a black filled region according to the boundary information of the connected region, the detecting module 602 is specifically configured to:
and if the distance between the boundary of the connected region and the boundary of the display picture is smaller than a second preset threshold value, determining that the connected region belongs to a black filling region.
Optionally, the obtaining module 601 is specifically configured to:
receiving a shot image sent by a camera for shooting the display picture;
and determining the boundary of the display picture according to the shot image, and determining the pixel information corresponding to the display picture according to the boundary.
Optionally, the display screen is divided into at least one region; the determining module 603 is specifically configured to:
determining main color information corresponding to each area in the display picture according to the detection result;
correspondingly, the processing module 604 is specifically configured to:
and controlling the light color of the backlight lamp corresponding to the region according to the main color information corresponding to each region.
The apparatus provided in this embodiment may implement the technical solutions of the method embodiments shown in fig. 1 to fig. 5, and the implementation principles and technical effects are similar, which are not described herein again.
Fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 7, the apparatus provided in this embodiment may include:
a screen (not shown in the figure) for displaying a picture;
a controller 71, configured to implement the backlight control method according to any of the above embodiments;
and the backlight 72 is connected with the controller and is used for outputting the light color matched with the main color of the display picture of the screen under the control of the controller.
For specific implementation principles and effects of the device provided in this embodiment, reference may be made to relevant descriptions and effects corresponding to the embodiments shown in fig. 1 to fig. 5, which are not described herein in detail.
Further, the display device may further include:
and the camera is connected with the controller 71 and is used for shooting the picture displayed on the screen and sending the picture to the controller.
For specific implementation principles and effects of the device provided in this embodiment, reference may be made to relevant descriptions and effects corresponding to the embodiments shown in fig. 1 to fig. 5, which are not described herein in detail.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the backlight control method provided in any embodiment of the present invention.
Embodiments of the present invention further provide a computer program product, which includes a computer program, and when the computer program is executed by a processor, the computer program implements the backlight control method according to any embodiment of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules is merely a division of logical functions, and an actual implementation may have another division, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to implement the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute some steps of the methods according to the embodiments of the present invention.
It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (Extended Industry Standard Architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present invention are not limited to only one bus or one type of bus.
The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof.
Claims (12)
1. A backlight control method, comprising:
acquiring pixel information corresponding to a display picture of display equipment;
detecting a black filling area in the display picture according to the pixel information;
determining main color information of the display picture according to the detection result;
and carrying out backlight control according to the main color information.
2. The method of claim 1, wherein determining the dominant color information of the display according to the detection result comprises:
determining main color information of the display picture according to pixel information corresponding to a picture source display area in the display picture;
and the film source display area is the other area except the black filling area in the display picture.
3. The method of claim 1, wherein detecting a black filled region in the display based on the pixel information comprises:
and traversing each pixel point in the display picture, and if the brightness value of the pixel point is determined to be smaller than a first preset threshold according to the pixel information corresponding to the pixel point, determining that the pixel point belongs to a black filling area.
4. The method of claim 1, wherein detecting a black filled region in the display based on the pixel information comprises:
traversing each pixel point in the display picture, and if the brightness value of the pixel point is determined to be smaller than a first preset threshold value according to the pixel information corresponding to the pixel point, adding the pixel point into a low-brightness pixel point set;
determining a connected region formed by the pixels in the low-brightness pixel point set according to the position information of each pixel in the low-brightness pixel point set;
and judging whether the connected region belongs to a black filling region or not according to the boundary of the connected region.
5. The method of claim 4, wherein determining whether the connected region belongs to a black filled region according to the boundary information of the connected region comprises:
and if the distance between the boundary of the connected region and the boundary of the display picture is smaller than a second preset threshold value, determining that the connected region belongs to a black filling region.
6. The method according to any one of claims 1 to 5, wherein acquiring pixel information corresponding to a display screen of a display device comprises:
receiving a shot image sent by a camera for shooting the display picture;
and determining the boundary of the display picture according to the shot image, and determining the pixel information corresponding to the display picture according to the boundary.
7. The method according to any of claims 1-5, wherein the display is divided into at least one region; determining the main color information of the display picture according to the detection result, wherein the determining comprises the following steps:
determining main color information corresponding to each area in the display picture according to the detection result;
correspondingly, the backlight control is performed according to the main color information, and the backlight control method comprises the following steps:
and controlling the light color of the backlight lamp corresponding to the region according to the main color information corresponding to each region.
8. A backlight control apparatus, characterized in that the apparatus comprises:
the acquisition module is used for acquiring pixel information corresponding to a display picture of the display equipment;
the detection module is used for detecting a black filling area in the display picture according to the pixel information;
the determining module is used for determining the main color information of the display picture according to the detection result;
and the processing module is used for carrying out backlight control according to the main color information.
9. A display device, comprising:
a screen for displaying a picture;
a controller for implementing the backlight control method of any one of claims 1-7;
and the backlight lamp is connected with the controller and used for outputting the light color matched with the main color of the picture displayed by the screen under the control of the controller.
10. The display device according to claim 9, further comprising:
and the camera is connected with the controller and is used for shooting the picture displayed by the screen and sending the picture to the controller.
11. A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, are configured to implement the backlight control method of any one of claims 1-7.
12. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the backlight control method of any one of claims 1-7.
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