CN116543708A - Regional light control dynamic color temperature compensation method, terminal and storage medium - Google Patents

Regional light control dynamic color temperature compensation method, terminal and storage medium Download PDF

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Publication number
CN116543708A
CN116543708A CN202310430940.3A CN202310430940A CN116543708A CN 116543708 A CN116543708 A CN 116543708A CN 202310430940 A CN202310430940 A CN 202310430940A CN 116543708 A CN116543708 A CN 116543708A
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Prior art keywords
color temperature
data
backlight
image
region
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范微
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Shenzhen Konka Electronic Technology Co Ltd
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Shenzhen Konka Electronic Technology Co Ltd
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Priority to CN202310430940.3A priority Critical patent/CN116543708A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The invention discloses a regional light control dynamic color temperature compensation method, a terminal and a storage medium, wherein the method comprises the following steps: acquiring a first image, and inputting the first image into a region light control module to obtain backlight data of each region; acquiring a second image, and calculating color temperature compensation data of each region corresponding to the second image according to the backlight data of each region; and calculating current backlight data of each area corresponding to the second image, and performing color temperature compensation on the second image according to the color temperature compensation data and the current backlight data to obtain a compensated third image. The invention calculates the color temperature compensation data of each corresponding area according to the backlight data of each area, thereby dynamically adjusting the color temperature compensation of each area, keeping the color temperatures of different areas of the image consistent, and improving the image display effect.

Description

Regional light control dynamic color temperature compensation method, terminal and storage medium
Technical Field
The present invention relates to the field of terminal technologies, and in particular, to a method for compensating a regional light control dynamic color temperature, a terminal, and a storage medium.
Background
The electronic display terminals in the current market mainly include LCD (Liquid CrystalDisplay) liquid crystal display devices and organic light-Emitting Diode (OLED) organic light-Emitting display devices, wherein the LCD cannot emit light by itself, and a backlight module is necessarily required to be used as a light source. When the brightness of the backlight module is adjusted, the reaction of the photoelectric material changes, so that the display color temperature drifts along with the change.
When the electronic product adopts the regional dimming technology, the brightness of the backlight module corresponding to different regions of one frame of image is often different, so that the color temperatures of the regions of the image emit different offsets, the consistent color temperatures cannot be kept, and the color temperatures are perceived to be uneven when being watched, so that the effect is poor.
Accordingly, there is a need in the art for improvement.
Disclosure of Invention
The invention aims to solve the technical problem that the prior art has defects, and provides a regional light control dynamic color temperature compensation method, a terminal and a storage medium, so as to solve the technical problem of uneven color temperature of the prior regional light modulation technology.
The technical scheme adopted for solving the technical problems is as follows:
in a first aspect, the present invention provides a method for compensating a dynamic color temperature of a regional light control, including:
acquiring a first image, and inputting the first image into a region light control module to obtain backlight data of each region;
acquiring a second image, and calculating color temperature compensation data of each region corresponding to the second image according to the backlight data of each region;
and calculating current backlight data of each area corresponding to the second image, and performing color temperature compensation on the second image according to the color temperature compensation data and the current backlight data to obtain a compensated third image.
In one implementation manner, the inputting the first image into the area light control module to obtain backlight data of each area includes:
and calculating backlight duty ratio data and color temperature offset data, and configuring a color temperature offset data table according to the backlight duty ratio data and the color temperature offset data.
In one implementation, the calculating the backlight duty ratio data and the color temperature shift data and configuring the color temperature shift data table according to the backlight duty ratio data and the color temperature shift data includes:
setting first backlight brightness, and adjusting to obtain a first color temperature parameter according to the color temperature requirement;
setting second backlight brightness, and adjusting to obtain a second color temperature parameter according to the color temperature requirement;
setting a third color temperature parameter meeting the color temperature requirement;
and configuring the color temperature offset data table according to the first color temperature parameter, the second color temperature parameter and the third color temperature parameter.
In one implementation, the configuring the color temperature shift data table according to the first color temperature parameter, the second color temperature parameter, and the third color temperature parameter includes:
and drawing points on backlight-R/G/B coordinate axes according to the first color temperature parameter, the second color temperature parameter and the third color temperature parameter, and fitting out the backlight-R/G/B curves of the three guns R, G and B by adopting a piecewise linear method according to the optical characteristics of different backlight modules.
In one implementation, the color temperature shift data table includes: and the backlight duty ratios correspond to the R offset value, the G offset value and the B offset value.
In one implementation manner, the calculating to obtain the color temperature compensation data of each region corresponding to the second image according to the backlight data of each region includes:
acquiring backlight data and maximum backlight brightness data of each region corresponding to the second image;
calculating a backlight duty ratio according to the backlight data and the maximum backlight brightness data;
and searching a color temperature offset data table according to the backlight duty ratio to obtain an R color temperature offset value, a G color temperature offset value and a B color temperature offset value corresponding to the backlight data.
In one implementation manner, the calculating the current backlight data of each region corresponding to the second image, and performing color temperature compensation on the second image according to the color temperature compensation data and the current backlight data includes:
calculating current backlight data of each region corresponding to the second image;
and adding the backlight data of each region corresponding to the second image and the color temperature offset value obtained by inquiry, and adjusting the color temperature of each region corresponding to the second image to target color temperature data.
In one implementation, the method further comprises:
and converting the current chromaticity color system into an RGB chromaticity color system according to the coordinate relation of the chromaticity color system to obtain backlight data of each region.
In a second aspect, the present invention also provides a terminal, including: the system comprises a processor and a memory, wherein the memory stores a regional light control dynamic color temperature compensation program which is used for realizing the operation of the regional light control dynamic color temperature compensation method according to the first aspect when the regional light control dynamic color temperature compensation program is executed by the processor.
In a third aspect, the present invention also provides a storage medium, which is a computer readable storage medium storing a region-controlled dynamic color temperature compensation program for implementing the operation of the region-controlled dynamic color temperature compensation method according to the first aspect when executed by a processor.
The technical scheme adopted by the invention has the following effects:
according to the invention, the backlight data of each region can be obtained by inputting the first image into the region light control module; further, color temperature compensation data of each region are obtained through calculation according to the backlight data of each region, so that color temperature compensation is carried out on the second image according to the color temperature compensation data and the current color temperature data, and a compensated third image is obtained; the invention dynamically adjusts the color temperature compensation of each region to keep the color temperatures of different regions of the image consistent, thereby improving the image display effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for regional light control dynamic color temperature compensation in one implementation of the present invention.
FIG. 2 is a schematic diagram of dynamic color temperature compensation for individual zone control in one implementation of the present invention.
FIG. 3 is a graph of R offset values obtained by fitting in one implementation of the invention.
FIG. 4 is a graph of G offset values obtained by fitting in one implementation of the invention.
FIG. 5 is a graph of B offset values obtained by fitting in one implementation of the invention.
FIG. 6 is a schematic diagram of a color temperature shift data table in one implementation of the invention.
Fig. 7 is a functional schematic of a terminal in one implementation of the invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear and clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Exemplary method
In the area dimming technology adopted by the current electronic product, the color temperature of the whole machine is usually adjusted in a fixed backlight module state, so that the color temperature of the picture in the corresponding area cannot be adjusted according to the brightness of the backlight module in different areas, namely the brightness of the backlight module corresponding to different areas of a frame of image is often different, so that the color temperature of each area of the image emits different offsets, the consistent color temperature cannot be maintained, the perceived color temperature is very uneven during watching, and the display effect is poor.
In view of the above technical problems, the embodiments of the present invention provide a method for dynamic color temperature compensation of area light control, which can calculate corresponding color temperature compensation data of each area according to backlight data of each area, dynamically adjust color temperature compensation of each area, so that color temperatures of different areas of an image are kept consistent, and image display effect is improved.
As shown in fig. 1, an embodiment of the present invention provides a method for compensating a dynamic color temperature of a region light control, which includes the following steps:
step S100, a first image is acquired, and the first image is input into a regional light control module to obtain backlight data of each region.
In this embodiment, the area light control dynamic color temperature compensation method is applied to a terminal, where the terminal includes but is not limited to: intelligent television, intelligent screen and mobile terminal.
In this embodiment, the method for compensating the dynamic color temperature of the regional light control is applicable to electronic products adopting the regional light control technology.
As shown in fig. 2, in this embodiment, a first image is acquired first, and the first image is input into a region light control module, and backlight data of each region is obtained after region light control display is performed by using the region light control module; wherein the first image is a video frame in an original video (video to be displayed), or the first image is an original image (image to be displayed).
In this embodiment, in order to accurately implement dynamic compensation of color temperature, the first image is set to be an image meeting display requirements after color calibration by a color calibration tool, for example, an image meeting NTSC color gamut, sRGB color gamut, DCI-P3 color gamut; accordingly, the first image in the present embodiment is an image that displays a color temperature accurately and uniformly on a standard display device.
Specifically, in one implementation manner of the present embodiment, step S100 includes the following steps:
step S101, calculating backlight duty ratio data and color temperature shift data, and configuring a color temperature shift data table according to the backlight duty ratio data and the color temperature shift data.
In this embodiment, when the area light control module displays the first image, in each display area, the display area displays an image area corresponding to the first image, and the color temperature shift data table may be configured by calculating backlight duty ratio data and color temperature shift data of the display area when the display area displays the corresponding image area, so as to dynamically compensate according to the color temperature shift data table.
Specifically, in one implementation manner of the present embodiment, step S101 includes the following steps:
step S101a, setting a first backlight brightness, and adjusting to obtain a first color temperature parameter according to a color temperature requirement;
step S101b, setting a second backlight brightness, and adjusting to obtain a second color temperature parameter according to the color temperature requirement;
step S101c, setting a third color temperature parameter meeting the color temperature requirement;
step S101d, configuring the color temperature shift data table according to the first color temperature parameter, the second color temperature parameter, and the third color temperature parameter.
In the present embodiment, when configuring the color temperature shift data table, it is first necessary to set the maximum backlight luminance L a Adjusting the color temperature gain adjustment value R a ，G a ，B a The color temperature requirement is met; for example, maximum backlight brightness L a 1000nt, the backlight duty ratio is 100%, if the color temperature requirement is 8500k, the color temperature gain adjustment value R is adjusted a ，G a ，B a Meets 8500K to obtain the current R a ，G a ，B a And obtaining the value to obtain the first color temperature parameter.
Then, a set of different L's is set a Is a backlight brightness L of (1) b Adjusting the color temperature gain adjustment value R b ，G b ，B b The color temperature requirement is met; with reference to the above-mentioned adjustment, e.g. the second set of backlight brightness L b 500nt, the backlight ratio is 50%, if the color temperature is 5000k, the color temperature gain adjustment value R is adjusted b ，G b ，B b Satisfying 5000K to obtainCurrent R b ，G b ，B b And obtaining a second color temperature parameter.
Then, more different backlight brightness L can be set according to the requirement x Color temperature gain adjustment value R meeting color temperature requirement x ，G x ，B x The method comprises the steps of carrying out a first treatment on the surface of the For example, a third set of backlight brightness L x 100nt, the backlight duty ratio is 10%, if the color temperature is 2500k, the color temperature gain adjustment value R is adjusted x ，G x ，B x Satisfying 2500K to obtain the current R x ，G x ，B x And obtaining a third color temperature parameter.
Specifically, in one implementation manner of the present embodiment, step S101d includes the following steps:
and step S101d-1, drawing points on backlight-R/G/B coordinate axes according to the first color temperature parameter, the second color temperature parameter and the third color temperature parameter, and fitting out the curves of the backlight-R/G/B of the three guns R, G and B by adopting a piecewise linear method according to the optical characteristics of different backlight modules.
In this embodiment, the color temperature parameters obtained in the previous three steps are respectively plotted on the backlight-R/G/B coordinate axes, and according to the optical characteristics of different backlight modules, the curves of R, G, and B three guns of backlight-R/G/B can be fitted by using a piecewise linear method or other methods (mean distribution method), wherein the obtained curves of backlight-R/G/B are respectively shown in fig. 3 to 5.
According to the fitted curves of the backlight-R/G/B of the three guns R, G and B, respectively calculating a backlight-color temperature shift data table, as shown in FIG. 6, wherein the color temperature shift data table comprises: and the backlight duty ratios correspond to the R offset value, the G offset value and the B offset value.
When the backlight-color temperature offset data table is calculated, according to the color temperature gain adjustment value in the backlight-R/G/B graph, the color temperature gain adjustment value is compared with the color temperature gain adjustment value of standard display equipment under the condition of the same brightness parameter and in a standard color temperature scene, and the R offset value, the G offset value and the B offset value corresponding to each backlight duty ratio can be obtained.
For example, at maximum backlight brightness L a In the case of 1000nt, the backlight duty ratio is 100%, if the color temperature is 8500k, and the color temperature of the current display area reaches 8500k, the color temperature gain adjustment value R is not required to be adjusted a ，G a ，B a Thus, the gain adjustment value R is adjusted for the color temperature a ，G a ，B a The offset values of (2) are all 0, i.e. the color temperature offset value R a-offset Color temperature offset value G a-offset Color temperature offset value B a-offset All 0.
At backlight brightness L b In the case of 500nt, the backlight duty is 50%, if the color temperature is 5000k, and the color temperature of the current display area is 4500k, the gain adjustment value R of the color temperature needs to be adjusted b ，G b ，B b Thus, the gain adjustment value R is adjusted for the color temperature b ，G b ，B b The offset values of (1) are-15, 5 and 0 respectively, namely the color temperature offset value R b-offset Is-15, color temperature offset value G b-offset Is 5, color temperature offset value B b-offset Is 0.
At backlight brightness L x In the case of 100nt, the backlight duty is 10%, if the color temperature is 2500k, and the color temperature of the current display area is 2700k, the color temperature gain adjustment value R needs to be adjusted x ，G x ，B x Thus, the gain adjustment value R is adjusted for the color temperature x ，G x ，B x The offset values of (1) are-39, 9, 0 respectively, i.e. the color temperature offset value R x-offset Is-39, color temperature offset value G x-offset At 9, color temperature offset value B x-offset Is 0.
As shown in fig. 1, in one implementation manner of the embodiment of the present invention, the method for compensating the regional light control dynamic color temperature further includes the following steps:
step S200, a second image is obtained, and color temperature compensation data of each area corresponding to the second image is obtained through calculation according to the backlight data of each area.
In this embodiment, after the first image is input into the area light control module, color temperature compensation data of each area corresponding to the second image is obtained by obtaining the second image and calculating according to the backlight data of each area corresponding to the second image; the second image may be the same image as the first image content but different in color temperature display effect, or may be an image different from the first image content.
Specifically, in one implementation of the present embodiment, step S200 includes the steps of:
step S201, obtaining backlight data and maximum backlight brightness data of each area corresponding to the second image;
step S202, calculating a backlight duty ratio according to the backlight data and the maximum backlight brightness data;
and step S203, a color temperature offset data table is searched according to the backlight duty ratio to obtain an R color temperature offset value, a G color temperature offset value and a B color temperature offset value corresponding to the backlight data.
In the present embodiment, after the second image is obtained, the backlight data L of each region is first obtained in the display scene of the second image n And maximum backlight brightness data L max And calculate the backlight duty ratioThen look up L in backlight-color temperature shift data table n Corresponding color temperature offset value R n-offset ，G n-offset ，B n-offset 。
As shown in fig. 1, in one implementation manner of the embodiment of the present invention, the method for compensating the regional light control dynamic color temperature further includes the following steps:
step S300, calculating current backlight data of each area corresponding to the second image, and performing color temperature compensation on the second image according to the color temperature compensation data and the current backlight data to obtain a compensated third image.
In this embodiment, after the R color temperature offset value, the G color temperature offset value, and the B color temperature offset value corresponding to the second image are found, the second image may be color temperature compensated according to the color temperature offset values, so as to obtain a compensated third image.
Specifically, in one implementation of the present embodiment, step S300 includes the steps of:
step S301, calculating current backlight data of each area corresponding to the second image;
step S302, adding the backlight data of each region corresponding to the second image to the color temperature offset value obtained by the query, and adjusting the color temperature of each region corresponding to the second image to the target color temperature data.
In this embodiment, the data of each region of the third image after color temperature compensation can be calculated by adding the color temperature offset value found in step S200 to each region RGB data of the second image processed by the region dimming module, and the specific region light control dynamic color temperature compensation formula is as follows:
R3 n ＝R2 n +R n-offset
G3 n ＝G2 n +G n-offset
B3 n ＝B2 n +B n-offset
wherein R is 3n 、G 3n 、B 3n Respectively the backlight data of the third image after color temperature compensation;
R 2n 、G 2n 、B 2n respectively the current backlight data of the second image;
R n-offset 、G n-offset 、B n-offset r is respectively 2n 、G 2n 、B 2n A corresponding color temperature shift value.
In one implementation manner of the embodiment of the present invention, the area light control dynamic color temperature compensation method further includes the following steps:
step S400, converting the current chromaticity color system into an RGB chromaticity color system according to the coordinate relation of the chromaticity color system, and obtaining the backlight data of each area.
In practical applications, the color temperature can be quantitatively described and tested by various chromaticity color systems (such as RGB chromaticity color system, XYZ chromaticity color system, yxy chromaticity color system, LUV chromaticity color system, etc.), and the quantitative test data of each chromaticity color system has a interconversion calculation method, such as chromaticity coordinate relation.
In this embodiment, three parameters R, G, and B are used to adjust the color temperature, and in practical application, quantization design may be performed according to a specifically selected chromaticity color system, or quantization test data of each chromaticity color system may be converted by a conversion formula such as chromaticity coordinate relation.
The following technical effects are achieved through the technical scheme:
according to the embodiment, the backlight data of each region can be obtained by inputting the first image into the region light control module; further, color temperature compensation data of each region are obtained through calculation according to the backlight data of each region, so that color temperature compensation is carried out on the second image according to the color temperature compensation data and the current color temperature data, and a compensated third image is obtained; according to the embodiment, the color temperature compensation of each region is dynamically regulated, so that the color temperatures of different regions of the image are kept consistent, and the image display effect is improved.
Exemplary apparatus
Based on the above embodiment, the present invention further provides a terminal, including: the system comprises a processor, a memory, an interface, a display screen and a communication module which are connected through a system bus; wherein the processor is configured to provide computing and control capabilities; the memory includes a storage medium and an internal memory; the storage medium stores an operating system and a computer program; the internal memory provides an environment for the operation of the operating system and computer programs in the storage medium; the interface is used for connecting external equipment, such as mobile terminals, computers and other equipment; the display screen is used for displaying corresponding information; the communication module is used for communicating with a cloud server or a mobile terminal.
The computer program is configured to implement the operation of a region-controlled dynamic color temperature compensation method when executed by the processor.
It will be appreciated by those skilled in the art that the schematic block diagram shown in fig. 7 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the terminal to which the present inventive arrangements are applied, and that a particular terminal may include more or fewer components than shown in fig. 7, or may combine certain components, or have a different arrangement of components.
In one embodiment, a terminal is provided, including: the system comprises a processor and a memory, wherein the memory stores a regional light control dynamic color temperature compensation program which is used for realizing the operation of the regional light control dynamic color temperature compensation method when being executed by the processor.
In one embodiment, a storage medium is provided, wherein the storage medium stores a region-controlled dynamic color temperature compensation program, which when executed by the processor is configured to implement the operations of the region-controlled dynamic color temperature compensation method as described above.
Those skilled in the art will appreciate that implementing all or part of the above-described methods may be accomplished by way of a computer program comprising instructions for the relevant hardware, the computer program being stored on a non-volatile storage medium, the computer program when executed comprising the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory.
In summary, the invention provides a regional light control dynamic color temperature compensation method, a terminal and a storage medium, wherein the method comprises the following steps: acquiring a first image, and inputting the first image into a region light control module to obtain backlight data of each region; acquiring a second image, and calculating color temperature compensation data of each region corresponding to the second image according to the backlight data of each region; and calculating current backlight data of each area corresponding to the second image, and performing color temperature compensation on the second image according to the color temperature compensation data and the current backlight data to obtain a compensated third image. The invention calculates the color temperature compensation data of each corresponding area according to the backlight data of each area, thereby dynamically adjusting the color temperature compensation of each area, keeping the color temperatures of different areas of the image consistent, and improving the image display effect.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.

Claims (10)

1. The regional light control dynamic color temperature compensation method is characterized by comprising the following steps of:
acquiring a first image, and inputting the first image into a region light control module to obtain backlight data of each region;
acquiring a second image, and calculating color temperature compensation data of each region corresponding to the second image according to the backlight data of each region;
and calculating current backlight data of each area corresponding to the second image, and performing color temperature compensation on the second image according to the color temperature compensation data and the current backlight data to obtain a compensated third image.
2. The method for compensating for dynamic color temperature of area light control according to claim 1, wherein said inputting the first image into the area light control module to obtain the backlight data of each area comprises:
and calculating backlight duty ratio data and color temperature offset data, and configuring a color temperature offset data table according to the backlight duty ratio data and the color temperature offset data.
3. The area control dynamic color temperature compensation method according to claim 1, wherein the calculating the backlight duty ratio data and the color temperature shift data and configuring the color temperature shift data table according to the backlight duty ratio data and the color temperature shift data comprises:
setting first backlight brightness, and adjusting to obtain a first color temperature parameter according to the color temperature requirement;
setting second backlight brightness, and adjusting to obtain a second color temperature parameter according to the color temperature requirement;
setting a third color temperature parameter meeting the color temperature requirement;
and configuring the color temperature offset data table according to the first color temperature parameter, the second color temperature parameter and the third color temperature parameter.
4. The method of claim 1, wherein the configuring the color temperature shift data table according to the first color temperature parameter, the second color temperature parameter, and the third color temperature parameter comprises:
and drawing points on backlight-R/G/B coordinate axes according to the first color temperature parameter, the second color temperature parameter and the third color temperature parameter, and fitting out the backlight-R/G/B curves of the three guns R, G and B by adopting a piecewise linear method according to the optical characteristics of different backlight modules.
5. The regional light control dynamic color temperature compensation method according to any one of claims 1 to 4, wherein the color temperature shift data table comprises: and the backlight duty ratios correspond to the R offset value, the G offset value and the B offset value.
6. The method of claim 1, wherein calculating color temperature compensation data of each region corresponding to the second image according to the backlight data of each region comprises:
acquiring backlight data and maximum backlight brightness data of each region corresponding to the second image;
calculating a backlight duty ratio according to the backlight data and the maximum backlight brightness data;
and searching a color temperature offset data table according to the backlight duty ratio to obtain an R color temperature offset value, a G color temperature offset value and a B color temperature offset value corresponding to the backlight data.
7. The method of claim 1, wherein calculating current backlight data of each region corresponding to the second image, and performing color temperature compensation on the second image according to the color temperature compensation data and the current backlight data, comprises:
calculating current backlight data of each region corresponding to the second image;
and adding the backlight data of each region corresponding to the second image and the color temperature offset value obtained by inquiry, and adjusting the color temperature of each region corresponding to the second image to target color temperature data.
8. The area light control dynamic color temperature compensation method of claim 1, further comprising:
and converting the current chromaticity color system into an RGB chromaticity color system according to the coordinate relation of the chromaticity color system to obtain backlight data of each region.
9. A terminal, comprising: a processor and a memory storing a region-controlled dynamic color temperature compensation program which, when executed by the processor, is adapted to carry out the operations of the region-controlled dynamic color temperature compensation method according to any one of claims 1-8.
10. A storage medium, characterized in that the storage medium is a computer readable storage medium, the storage medium storing a region-controlled dynamic color temperature compensation program, which when executed by a processor is adapted to carry out the operations of the region-controlled dynamic color temperature compensation method according to any one of claims 1-8.
CN202310430940.3A 2023-04-11 2023-04-11 Regional light control dynamic color temperature compensation method, terminal and storage medium Pending CN116543708A (en)

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