CN113781968A - Backlight adjusting method, device, equipment and storage medium - Google Patents
Backlight adjusting method, device, equipment and storage medium Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
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- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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 invention discloses a backlight adjusting method, a backlight adjusting device, backlight adjusting equipment and a storage medium. The method comprises the steps of obtaining information of an image to be adjusted, and determining the image to be adjusted according to the information of the image to be adjusted; calculating an image brightness value of an image to be adjusted according to a preset backlight adjustment algorithm; acquiring a preset time domain filter value and a reference frame image brightness value, adjusting the image brightness value of the image to be adjusted according to the preset time domain filter value and the reference frame image brightness value to obtain an adjustment result, and adjusting the brightness of the backlight lamp according to the adjustment result. The brightness value of the image to be adjusted is adjusted according to the preset time domain filter value and the reference frame image brightness value by calculating the image brightness value of the image to be adjusted, so that an adjustment result is obtained, and the brightness of the backlight lamp is adjusted according to the adjustment result. The problem of current when broadcasting bright and dark contrast obvious film source, obvious scintillation can appear is solved, the user is promoted and is seen the shadow and experience.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a backlight adjusting method, apparatus, device, and storage medium.
Background
With the rapid development of the broadcast television industry and the continuous acceleration of the digitization process, a local dimming (local backlight adjustment) function is generated, the real-time power consumption of the whole machine can be reduced, the contrast is improved, the HDR function is expanded and enhanced, and the display picture is better. The brightness of the picture is established by the RGB input signals by superimposing specific parts of the RGB signals together. The video is composed of image frames, and if the bright-dark contrast of the adjacent images of the image frames constituting the video is obvious, the problem of obvious flicker can occur.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a backlight adjusting method, a backlight adjusting device, backlight adjusting equipment and a storage medium, and aims to solve the technical problem that in the prior art, when a film source with obvious bright-dark contrast is played, obvious flicker occurs.
To achieve the above object, the present invention provides a backlight adjusting method, comprising the steps of:
acquiring information of an image to be adjusted, and determining the image to be adjusted according to the information of the image to be adjusted;
calculating the image brightness value of the image to be adjusted according to a preset backlight adjustment algorithm;
acquiring a preset time domain filter value and a reference frame image brightness value, and adjusting the image brightness value of the image to be adjusted according to the preset time domain filter value and the reference frame image brightness value to obtain an adjustment result;
and adjusting the brightness of the backlight lamp according to the adjusting result.
Optionally, the step of calculating an image brightness value of the image to be adjusted according to a preset backlight adjustment algorithm includes:
acquiring image histogram information of the image to be adjusted, wherein the image histogram information comprises pixel point RGB values and pixel occurrence frequencies of pixel points in the image to be adjusted;
and calculating the image brightness value of the image to be regulated according to the pixel occurrence frequency, the pixel point RGB value and a preset backlight regulation algorithm.
Optionally, the preset backlight adjusting algorithm is:
wherein M is the image brightness value of the image to be adjusted, n is the number of different pixel points in the histogram information and RiFor the ith in the histogram informationR value, G value in RGB value of each pixel pointiThe G value, B value in the RGB value of the ith pixel point in the histogram informationiIs the B value, P, in the RGB value of the ith pixel point in the histogram informationiAnd the occurrence frequency of the pixel of the ith pixel point in the histogram information is obtained.
Optionally, the step of obtaining a preset time-domain filter value and a reference frame image brightness value, and adjusting the image brightness value of the image to be adjusted according to the preset time-domain filter value and the reference frame image brightness value to obtain an adjustment result includes:
acquiring a reference frame image brightness value, wherein the reference frame image brightness value is an image brightness value of a previous frame image adjacent to the image to be adjusted;
acquiring a preset time domain filter value, and determining a target time domain filter value range according to the reference frame image brightness value and the preset time domain filter value;
and adjusting the image brightness value of the image to be adjusted according to the target time domain filtering value range to obtain an adjustment result.
Optionally, the step of adjusting the image brightness value of the image to be adjusted according to the target time-domain filtering value range to obtain an adjustment result includes:
judging whether the image brightness value of the image to be adjusted is within the target time domain filtering value range;
and when the image brightness value of the image to be adjusted is within the target time domain filtering value range, taking the image brightness value of the image to be adjusted as the adjustment result.
Optionally, after the step of determining whether the image brightness value of the image to be adjusted is within the target time-domain filtering value range, the method further includes:
when the image brightness value of the image to be adjusted is not in the target time domain filtering value range, determining a first filtering value according to the target time domain filtering value range;
judging whether the image brightness value of the image to be regulated is smaller than the first filtering value;
and when the image brightness value of the image to be adjusted is smaller than the first filtering value, taking the first filtering value as the adjustment result.
Optionally, the step of calculating an image brightness value of the image to be adjusted according to a preset backlight adjustment algorithm includes:
acquiring the number of preset partitions;
partitioning the image to be adjusted according to the preset partition number to obtain a partition image of the image to be adjusted;
and calculating the brightness value of the subarea image according to a preset backlight adjusting algorithm.
In addition, to achieve the above object, the present invention also provides a backlight adjusting apparatus, comprising:
the acquisition module is used for acquiring the information of the image to be adjusted and determining the image to be adjusted according to the information of the image to be adjusted;
the computing module is used for computing the image brightness value of the image to be adjusted according to a preset backlight adjusting algorithm;
the adjusting module is used for acquiring a preset time domain filter value and a reference frame image brightness value, and adjusting the image brightness value of the image to be adjusted according to the preset time domain filter value and the reference frame image brightness value to obtain an adjusting result;
and the control module is used for controlling the brightness of the backlight lamp according to the adjusting result.
Further, to achieve the above object, the present invention also proposes a backlight adjusting apparatus, comprising: a memory, a processor and a backlight adjustment program stored on the memory and executable on the processor, the backlight adjustment program being configured to implement the steps of the backlight adjustment method as described above.
Furthermore, to achieve the above object, the present invention further proposes a storage medium having a backlight adjusting program stored thereon, which when executed by a processor implements the steps of the backlight adjusting method as described above.
The invention discloses a backlight adjusting method, a backlight adjusting device, backlight adjusting equipment and a storage medium. The method comprises the following steps: acquiring information of an image to be adjusted, and determining the image to be adjusted according to the information of the image to be adjusted; calculating the image brightness value of the image to be adjusted according to a preset backlight adjustment algorithm; acquiring a preset time domain filter value and a reference frame image brightness value, and adjusting the image brightness value of the image to be adjusted according to the preset time domain filter value and the reference frame image brightness value to obtain an adjustment result; and adjusting the brightness of the backlight lamp according to the adjusting result. Because the image brightness value of the image to be adjusted is calculated and is adjusted according to the preset time domain filter value and the reference frame image brightness value, the reference frame image brightness value is the image brightness value of the previous frame image adjacent to the image to be adjusted, the difference between the adjusted image brightness value of the image to be adjusted and the reference frame image brightness value is in a certain range, and the problem of flicker caused by obvious bright-dark contrast of the two adjacent frames of images is avoided during playing. The problem of current when broadcasting bright and dark contrast obvious film source, obvious scintillation can appear is solved, the user is promoted and is seen the shadow and experience.
Drawings
Fig. 1 is a schematic structural diagram of a backlight adjusting device of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a backlight adjusting method according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a backlight adjusting method according to a second embodiment of the present invention;
FIG. 4 is a block diagram of a backlight adjusting apparatus according to a first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a backlight adjusting device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the backlight adjusting apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The Memory 1005 may be a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
It will be appreciated by those skilled in the art that the configuration shown in fig. 1 does not constitute a limitation of the backlight adjustment device and may include more or less components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a user interface module, and a backlight adjusting program.
In the backlight adjustment apparatus shown in fig. 1, the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 of the backlight adjusting apparatus of the present invention may be provided in the backlight adjusting apparatus, which calls the backlight adjusting program stored in the memory 1005 through the processor 1001 and executes the backlight adjusting method provided by the embodiment of the present invention.
Based on the backlight adjusting apparatus, an embodiment of the present invention provides a backlight adjusting method, and referring to fig. 2, fig. 2 is a flowchart illustrating a first embodiment of the backlight adjusting method according to the present invention.
In this embodiment, the backlight adjusting method includes the following steps:
step S10: and acquiring information of an image to be adjusted, and determining the image to be adjusted according to the information of the image to be adjusted.
It should be noted that the execution main body of the embodiment may be a computing service device with data processing, network communication and program running functions, such as a mobile phone, a tablet computer, a personal computer, etc., or an electronic device capable of implementing the above functions or a television with a local dimming function, etc. The present embodiment and each of the following embodiments will be described below by taking the television set as an example.
It should be noted that the image information to be adjusted may be a video or several frames of images to be played on a video playing device. The determining of the image to be adjusted according to the image information to be adjusted may be acquiring an image frame in the image information to be adjusted, and taking the image frame as the image to be adjusted.
Step S20: and calculating the image brightness value of the image to be adjusted according to a preset backlight adjusting algorithm.
It should be noted that the preset backlight adjusting algorithm may be an algorithm capable of calculating an image brightness value of an image according to information such as YUV or RGB of the image to be adjusted.
Further, in order to more accurately obtain the image brightness value of the image to be adjusted, the step S20 includes: acquiring image histogram information of the image to be adjusted, wherein the image histogram information comprises pixel point RGB values and pixel occurrence frequencies of pixel points in the image to be adjusted; and calculating the image brightness value of the image to be regulated according to the pixel occurrence frequency, the pixel point RGB value and a preset backlight regulation algorithm.
It should be noted that the image histogram information may be information of pixel points and frequency information of the pixel points in the image to be adjusted. The histogram processing may be performed on the image to be adjusted to obtain image histogram information of the image to be adjusted. The preset backlight adjusting algorithm comprises the following steps:
wherein M is the image brightness value of the image to be adjusted, n is the number of different pixel points in the histogram information and RiIs the histogramR value, G value in RGB value of ith pixel point in informationiThe G value, B value in the RGB value of the ith pixel point in the histogram informationiIs the B value, P, in the RGB value of the ith pixel point in the histogram informationiAnd the occurrence frequency of the pixel of the ith pixel point in the histogram information is obtained.
In a specific implementation, for example, for an image information, the image frame of the image information has 1000 frames, and the image histogram information of the 1000 frames of image is calculated respectively to obtain the RGB values and the appearance frequencies of the pixels in the image, and then substituted into the above algorithm to calculate the brightness value of the image, for example, the image histogram of a certain image represents that it is composed of two different pixels, i.e., pixel a and pixel B, whose appearance frequencies are a and B, respectively, and are 100, 400, R and G, and B are 200, and 0, respectively. The RGB values for B are R100, G90, and B210, respectively. Substituting into the above formula, M is 100[ (299 × 200) + (587 × 100) + (114 × 0) ]/1000+400[ (299 × 100) + (587 × 90) + (114 × 210) ]/1000 is 100 × 118.5+400 × 106.67 is 11850+10667 is calculated as 11822517. I.e. the image brightness value of the image frame is 22517. Because each type of liquid crystal display screen has cold color and warm color difference, even different parts of the same type of screen have difference due to process difference, liquid crystal compensation is needed to be continuously carried out at the position, and the calculated image brightness value is adjusted by adopting the liquid crystal compensation so as to obtain a more accurate calculation result.
Step S30: and acquiring a preset time domain filter value and a reference frame image brightness value, and adjusting the image brightness value of the image to be adjusted according to the preset time domain filter value and the reference frame image brightness value to obtain an adjustment result.
It should be noted that the preset temporal filtering value may be a preset threshold value of a difference between image brightness values of two adjacent image frames, for example, the preset temporal filtering value may be set to 25, and when an absolute value of a difference between image brightness values of two adjacent image frames is greater than 25, it indicates that the brightness of the two adjacent image frames changes excessively, and brightness adjustment is required. The adjusting the image brightness value of the image to be adjusted according to the preset time-domain filter value and the reference frame image brightness value may be adjusting the image brightness value of the image to be adjusted according to the preset time-domain filter value and the reference frame image brightness value, so that an absolute value of a difference between the image brightness value of the image to be adjusted and the reference frame image brightness value is less than or equal to the preset time-domain filter value.
Step S40: and adjusting the brightness of the backlight lamp according to the adjusting result.
The backlight control chip may be a chip capable of adjusting the brightness of the backlight.
In a specific implementation, after receiving the adjustment result, a backlight control chip in the television adjusts the brightness of the backlight according to the adjustment result.
The embodiment acquires the information of an image to be adjusted, and determines the image to be adjusted according to the information of the image to be adjusted; calculating the image brightness value of the image to be adjusted according to a preset backlight adjustment algorithm; acquiring a preset time domain filter value and a reference frame image brightness value, and adjusting the image brightness value of the image to be adjusted according to the preset time domain filter value and the reference frame image brightness value to obtain an adjustment result; and adjusting the brightness of the backlight lamp according to the adjusting result. Because the image brightness value of the image to be adjusted is calculated and the image brightness value of the image to be adjusted is adjusted according to the preset time domain filter value and the reference frame image brightness value, because the reference frame image brightness value is the image brightness value of the previous frame image adjacent to the image to be adjusted, the difference between the adjusted image brightness value of the image to be adjusted and the reference frame image brightness value is within a certain range, and the problem of flicker caused by obvious bright-dark contrast can be avoided when the two adjacent frames of images are played. The problem of current when broadcasting bright and dark contrast obvious film source, obvious scintillation can appear is solved, the user is promoted and is seen the shadow and experience.
Referring to fig. 3, fig. 3 is a flowchart illustrating a backlight adjusting method according to a second embodiment of the invention.
Based on the first embodiment described above, in the present embodiment, the step S30 includes:
step S301: and acquiring a reference frame image brightness value, wherein the reference frame image brightness value is an image brightness value of a previous frame image adjacent to the image to be adjusted.
It should be understood that if the image to be adjusted is the first frame image in the image information, the adjustment may be started from the second frame image without adjustment.
Step S302: and acquiring a preset time domain filter value, and determining a target time domain filter value range according to the reference frame image brightness value and the preset time domain filter value.
It should be noted that the preset temporal filtering value may be a preset threshold value of a difference between brightness values of two adjacent image frames, for example, the preset temporal filtering value may be set to 25, that is, a difference between brightness values of two adjacent image frames does not exceed 25, or may be determined according to an empirical value, which is not limited herein. The determining of the target time-domain filtering value range according to the reference frame image brightness value and the preset time-domain filtering value may be that a lower limit value of the target time-domain filtering value range is obtained by subtracting a preset time-domain filtering value from the reference frame image brightness value, a lower limit value of the target time-domain filtering value range is obtained by adding a preset time-domain filtering value to the reference frame image brightness value, and a target time-domain filtering value range is generated according to the lower limit value and the upper limit value. For example, if the reference frame image brightness value is 180, the target temporal filtering value range determined according to the reference frame image brightness value is 155-.
Step S303: and adjusting the image brightness value of the image to be adjusted according to the target time domain filtering value range to obtain an adjustment result.
It should be noted that, the adjusting the image brightness value of the image to be adjusted according to the target time-domain filter value range may be adjusting the image brightness value to be within the target time-domain filter value range.
Further, in order to solve the problem of flicker caused by the apparent brightness change of the image frame during the video playing, after step S303, the method further includes: judging whether the image brightness value of the image to be adjusted is within the target time domain filtering value range; and when the image brightness value of the image to be adjusted is within the target time domain filtering value range, taking the image brightness value of the image to be adjusted as the adjustment result.
It should be understood that, when the image brightness value of the image to be adjusted is within the target time domain filter value range, it may be considered that the brightness of the two adjacent frames of images does not change much, and no flicker problem may occur.
Further, after determining whether the image brightness value of the image to be adjusted is within the target time domain filtering value range, the method further includes: when the image brightness value of the image to be adjusted is not in the target time domain filtering value range, determining a first filtering value according to the target time domain filtering value range; judging whether the image brightness value of the image to be regulated is smaller than the first filtering value; and when the image brightness value of the image to be adjusted is smaller than the first filtering value, taking the first filtering value as the adjustment result.
It should be noted that the first filtered value may be a lower limit value of the target time-domain filtered value range, for example, if the target time-domain filtered value range is 140 and 160, the first filtered value may be 140. And when the image brightness value of the image to be adjusted is smaller than the first filtering value, taking the first filtering value as the adjustment result.
It should be understood that the non-step of determining whether the image brightness value of the image to be adjusted is smaller than the first filtered value further includes: if the image brightness value of the image to be adjusted is not smaller than the first filtering value, judging whether the image brightness value of the image to be adjusted is larger than the upper limit value of a target time domain filtering value range, and taking the upper limit value of the target time domain filtering value range as the adjusting result when the image brightness value of the image to be adjusted is larger than the upper limit value of the target time domain filtering value range. For example, if the target time-domain filter value range is 140-. And when the image brightness value of the image to be adjusted is larger than 160, taking 160 as the adjustment result of the image to be adjusted.
Further, the step of calculating the image brightness value of the image to be adjusted according to a preset backlight adjustment algorithm includes: acquiring the number of preset partitions; partitioning the image to be adjusted according to the preset partition number to obtain a partition image of the image to be adjusted; and calculating the brightness value of the subarea image according to a preset backlight adjusting algorithm.
It should be noted that the number of the partitions may be the number of the partitions that partition the image to be adjusted, that is, the number of the partitions that equally divide the image to be adjusted into several parts, and if the number of the partitions is 4, equally divide the image to be adjusted into 4 partitions. The partition image may be an image obtained by partitioning an image to be adjusted, and the method for calculating the brightness value of the partition image according to the preset backlight adjustment algorithm may refer to the method for calculating the brightness value of the image to be adjusted.
It should be understood that, in this embodiment, the brightness value of the image of the partition image may also be calculated by partitioning each frame of the image to be adjusted to obtain the partition image of each frame of the image to be adjusted, so that the brightness of the backlight may be adjusted for the partition. For example, if the image brightness values of the partition images in the same image to be recognized are too different, the brightness of the backlight lamps of the partition images may be respectively adjusted so that the image brightness difference of each partition image in the image to be recognized is within the preset range. The film watching experience of the user is improved.
The embodiment acquires the brightness value of the reference frame image of the previous frame image adjacent to the image to be adjusted; acquiring a preset time domain filter value, and determining a target time domain filter value range according to the reference frame image brightness value and the preset time domain filter value; and adjusting the image brightness value of the image to be adjusted according to the target time domain filtering value range to obtain an adjustment result. In the embodiment, a target time domain filter value range is determined according to a reference frame image brightness value and the preset time domain filter value by obtaining a reference frame image brightness value of a previous frame image adjacent to the image to be adjusted; and adjusting the image brightness value of the image to be adjusted according to the target time domain filtering value range to obtain an adjustment result. The difference between the image brightness value of the image to be adjusted and the reference frame image brightness value of the adjacent previous frame image is within a certain range, so that the problem of flicker caused by too large brightness change of the image frame can be avoided during video playing.
Referring to fig. 4, fig. 4 is a block diagram of a backlight adjusting device according to a first embodiment of the invention.
As shown in fig. 4, the backlight adjusting apparatus according to the embodiment of the present invention includes:
the obtaining module 10 is configured to obtain information of an image to be adjusted, and determine the image to be adjusted according to the information of the image to be adjusted.
And the calculating module 20 is configured to calculate an image brightness value of the image to be adjusted according to a preset backlight adjusting algorithm.
The adjusting module 30 is configured to obtain a preset time-domain filter value and a reference frame image brightness value, and adjust an image brightness value of the image to be adjusted according to the preset time-domain filter value and the reference frame image brightness value to obtain an adjustment result.
And the control module 40 is configured to send the adjustment result to the backlight control chip, so that the backlight control chip controls the brightness of the backlight according to the adjustment result.
The method comprises the steps of obtaining information of an image to be adjusted, and determining the image to be adjusted according to the information of the image to be adjusted; calculating the image brightness value of the image to be adjusted according to a preset backlight adjustment algorithm; acquiring a preset time domain filter value and a reference frame image brightness value, and adjusting the image brightness value of the image to be adjusted according to the preset time domain filter value and the reference frame image brightness value to obtain an adjustment result; and adjusting the brightness of the backlight lamp according to the adjusting result. Because the image brightness value of the image to be adjusted is calculated and the image brightness value of the image to be adjusted is adjusted according to the preset time domain filter value and the reference frame image brightness value, because the reference frame image brightness value is the image brightness value of the previous frame image adjacent to the image to be adjusted, the difference between the adjusted image brightness value of the image to be adjusted and the reference frame image brightness value is within a certain range, and the problem of flicker caused by obvious bright-dark contrast can be avoided when the two adjacent frames of images are played. The problem of current when broadcasting bright and dark contrast obvious film source, obvious scintillation can appear is solved, the user is promoted and is seen the shadow and experience.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may refer to the parameter operation method provided in any embodiment of the present invention, and are not described herein again.
Based on the first embodiment of the backlight adjusting device of the present invention, a second embodiment of the backlight adjusting device of the present invention is provided.
In this embodiment, the calculating module 20 is further configured to obtain image histogram information of the image to be adjusted, where the image histogram information includes RGB values of pixel points in the image to be adjusted and occurrence frequencies of the pixel points; and calculating the image brightness value of the image to be regulated according to the pixel occurrence frequency, the pixel point RGB value and a preset backlight regulation algorithm.
Further, the preset backlight adjusting algorithm is as follows:
wherein M is the image brightness value of the image to be adjusted, n is the number of different pixel points in the histogram information and RiIs the R value, G value in the RGB value of the ith pixel point in the histogram informationiThe G value, B value in the RGB value of the ith pixel point in the histogram informationiIs the B value, P, in the RGB value of the ith pixel point in the histogram informationiIs that it isAnd the occurrence frequency of the pixel of the ith pixel point in the histogram information.
Further, the adjusting module 30 is further configured to obtain a reference frame image brightness value, where the reference frame image brightness value is an image brightness value of a previous frame image adjacent to the image to be adjusted; acquiring a preset time domain filter value, and determining a target time domain filter value range according to the reference frame image brightness value and the preset time domain filter value; and adjusting the image brightness value of the image to be adjusted according to the target time domain filtering value range to obtain an adjustment result.
Further, the adjusting module 30 is further configured to determine whether an image brightness value of the image to be adjusted is within the target time domain filtering value range; and when the image brightness value of the image to be adjusted is within the target time domain filtering value range, taking the image brightness value of the image to be adjusted as the adjustment result.
Further, the adjusting module 30 is further configured to determine a first filter value according to the target time-domain filter value range when the image brightness value of the image to be adjusted is not within the target time-domain filter value range; judging whether the image brightness value of the image to be regulated is smaller than the first filtering value; and when the image brightness value of the image to be adjusted is smaller than the first filtering value, taking the first filtering value as the adjustment result.
Further, the calculating module 20 is further configured to obtain a preset partition number; partitioning the image to be adjusted according to the preset partition number to obtain a partition image of the image to be adjusted; and calculating the brightness value of the subarea image according to a preset backlight adjusting algorithm.
Other embodiments or specific implementations of the backlight adjustment device of the present invention may refer to the above method embodiments, and are not described herein again.
Furthermore, an embodiment of the present invention further provides a storage medium, where the storage medium stores a backlight adjustment program, and the backlight adjustment program, when executed by a processor, implements the steps of the backlight adjustment method as described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A backlight adjustment method, characterized in that the backlight adjustment comprises the steps of:
acquiring information of an image to be adjusted, and determining the image to be adjusted according to the information of the image to be adjusted;
calculating the image brightness value of the image to be adjusted according to a preset backlight adjustment algorithm;
acquiring a preset time domain filter value and a reference frame image brightness value, and adjusting the image brightness value of the image to be adjusted according to the preset time domain filter value and the reference frame image brightness value to obtain an adjustment result;
and adjusting the brightness of the backlight lamp according to the adjusting result.
2. The backlight adjustment method of claim 1, wherein the step of calculating the image brightness value of the image to be adjusted according to a preset backlight adjustment algorithm comprises:
acquiring image histogram information of the image to be adjusted, wherein the image histogram information comprises pixel point RGB values and pixel occurrence frequencies of pixel points in the image to be adjusted;
and calculating the image brightness value of the image to be regulated according to the pixel occurrence frequency, the pixel point RGB value and a preset backlight regulation algorithm.
3. The backlight adjustment method of claim 2, wherein the preset backlight adjustment algorithm is:
wherein M is the image brightness value of the image to be adjusted, n is the number of different pixel points in the histogram information and RiIs the R value, G value in the RGB value of the ith pixel point in the histogram informationiThe G value, B value in the RGB value of the ith pixel point in the histogram informationiIs the B value, P, in the RGB value of the ith pixel point in the histogram informationiAnd the occurrence frequency of the pixel of the ith pixel point in the histogram information is obtained.
4. The backlight adjustment method of claim 1, wherein the step of obtaining a preset temporal filter value and a reference frame image brightness value, and adjusting the image brightness value of the image to be adjusted according to the preset temporal filter value and the reference frame image brightness value to obtain an adjustment result comprises:
acquiring a reference frame image brightness value, wherein the reference frame image brightness value is an image brightness value of a previous frame image adjacent to the image to be adjusted;
acquiring a preset time domain filter value, and determining a target time domain filter value range according to the reference frame image brightness value and the preset time domain filter value;
and adjusting the image brightness value of the image to be adjusted according to the target time domain filtering value range to obtain an adjustment result.
5. The backlight adjustment method of claim 4, wherein the adjusting the image brightness value of the image to be adjusted according to the target temporal filtering value range to obtain an adjustment result comprises:
judging whether the image brightness value of the image to be adjusted is within the target time domain filtering value range;
and when the image brightness value of the image to be adjusted is within the target time domain filtering value range, taking the image brightness value of the image to be adjusted as the adjustment result.
6. The backlight adjustment method of claim 5, wherein the step of determining whether the image brightness value of the image to be adjusted is within the target temporal filter value range is followed by further comprising:
when the image brightness value of the image to be adjusted is not in the target time domain filtering value range, determining a first filtering value according to the target time domain filtering value range;
judging whether the image brightness value of the image to be regulated is smaller than the first filtering value;
and when the image brightness value of the image to be adjusted is smaller than the first filtering value, taking the first filtering value as the adjustment result.
7. The backlight adjustment method according to any one of claims 1-6, wherein the step of calculating image luminance values of the image to be adjusted according to a preset backlight adjustment algorithm comprises:
acquiring the number of preset partitions;
partitioning the image to be adjusted according to the preset partition number to obtain a partition image of the image to be adjusted;
and calculating the brightness value of the subarea image according to a preset backlight adjusting algorithm.
8. A backlight adjustment device, comprising:
the acquisition module is used for acquiring the information of the image to be adjusted and determining the image to be adjusted according to the information of the image to be adjusted;
the computing module is used for computing the image brightness value of the image to be adjusted according to a preset backlight adjusting algorithm;
the adjusting module is used for acquiring a preset time domain filter value and a reference frame image brightness value, and adjusting the image brightness value of the image to be adjusted according to the preset time domain filter value and the reference frame image brightness value to obtain an adjusting result;
and the control module is used for controlling the brightness of the backlight lamp according to the adjusting result.
9. A backlight adjusting apparatus, characterized in that the apparatus comprises: a memory, a processor, and a backlight adjustment program stored on the memory and executable on the processor, the backlight adjustment program configured to implement the backlight adjustment method of any of claims 1 to 7.
10. A storage medium having a backlight adjustment program stored thereon, the backlight adjustment program when executed by a processor implementing the backlight adjustment method according to any one of claims 1 to 7.
Priority Applications (2)
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| CN202111054158.3A CN113781968A (en) | 2021-09-08 | 2021-09-08 | Backlight adjusting method, device, equipment and storage medium |
| PCT/CN2022/114365 WO2023035939A1 (en) | 2021-09-08 | 2022-08-24 | Backlight adjustment method and apparatus, device, and storage medium |
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| CN202111054158.3A CN113781968A (en) | 2021-09-08 | 2021-09-08 | Backlight adjusting method, device, equipment and storage medium |
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| WO2023035939A1 (en) * | 2021-09-08 | 2023-03-16 | 深圳创维－Rgb电子有限公司 | Backlight adjustment method and apparatus, device, and storage medium |
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