CN109872704A - A kind of display image quality calibration method and device - Google Patents
A kind of display image quality calibration method and device Download PDFInfo
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Abstract
The invention discloses a kind of display image quality calibration methods, comprising: obtains whole white degree coordinate value of the display screen of display when showing complete white picture；Judge whether whole white degree coordinate value deviates benchmark coloration coordinate range, is calibrated in target reference color temperature if so, carrying out colour temperature to the image quality parameter of display, benchmark coloration coordinate range is corresponding with target reference color temperature；Obtain grayscale chromaticity coordinate value of the display screen in displaying target grey menu；Judge whether grayscale chromaticity coordinate value deviates benchmark coloration coordinate range, if so, the image quality parameter to display carries out within the scope of gamma corrected to target gamma value, benchmark coloration coordinate range is corresponding with target gamma value range.To which the present invention solves the process complexity of display image quality calibration and calibrates the unstable technical problem of effect.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of display image quality calibration methods and device.
Background technique
Present requirement of the more and more users to the image quality effect of display is higher and higher, pursues high image quality reduction effect
As main trend, therefore in order to guarantee high image quality, need to carry out image quality calibration to display.
The equipment for carrying out image quality calibration to display on the market now is to be directed to video card output and display screen reduction effect
Calibration, and need individually purchase image quality calibrator (-ter) unit, and the model of image quality calibrator (-ter) unit is different, effect calibrated to image quality
Also can be variant, therefore, existing complicated to the process of display image quality calibration and calibration effect is unstable.
Summary of the invention
The embodiment of the present invention solves the prior art to existing to display by providing a kind of image quality calibration method and device
The process of device image quality calibration is complicated and calibrates the unstable technical problem of effect.
In a first aspect, the embodiment of the present invention provides a kind of display image quality calibration method, comprising:
Obtain whole white degree coordinate value of the display screen of the display when showing complete white picture；
Judge whether the whole white degree coordinate value deviates benchmark coloration coordinate range, if so, to the display
Image quality parameter carries out colour temperature and calibrates in target reference color temperature, wherein the benchmark coloration coordinate range and the target colour temperature
Range is corresponding；
Obtain grayscale chromaticity coordinate value of the display screen in displaying target grey menu；
Judge whether the grayscale chromaticity coordinate value deviates the benchmark coloration coordinate range, if so, to the display
The image quality parameter of device carries out within the scope of gamma corrected to target gamma value, wherein the benchmark coloration coordinate range and the mesh
It is corresponding to mark gamma value range.
Optionally, whole white degree coordinate value of the display screen for obtaining the display when showing complete white picture, packet
It includes:
It controls the display screen and shows the complete white picture；
Full white image acquisition instructions are sent to image capture device, the full white image acquisition instructions are used to indicate the figure
Screen of the display screen when showing the complete white picture is shot as acquiring equipment, generates all white screen image；
Complete white RGB data is received from described image acquisition equipment, wherein the complete white RGB data is described image acquisition
Equipment is extracted from the image information of all white screen image；
Conversion calculating is carried out to the complete white RGB data, obtains the whole white degree coordinate value.
Optionally, the image quality parameter progress colour temperature to the display calibrates in target reference color temperature, comprising:
Default RGB yield value is at least changed once for the complete white RGB data, until for the complete white RGB data
Color temperature value after changing default RGB yield value is in the target reference color temperature.
It is optionally, described at least to change once default RGB yield value for the complete white RGB data, comprising:
RGB yield value is once preset for the complete white RGB data change；
Control the display screen based on when it is previous change default RGB yield value for the complete white RGB data after image quality
Parameter shows the complete white picture again；
Obtain new whole white degree coordinate value of the display screen when showing the complete white picture again；
Verify whether the new whole white degree coordinate value deviates the benchmark coloration coordinate range；
If so, the step of changing once default RGB yield value for the complete white RGB data is returned to, if it is not, really
The settled previous color temperature value for after the complete white default RGB yield value of RGB data change is in the target reference color temperature.
Optionally, the grayscale chromaticity coordinate value for obtaining the display screen in displaying target grey menu, comprising:
It controls the display screen and shows the target gray scale picture, the target gray scale picture, which successively takes, multiple prestores grayscale
One in picture；
Gray scale image acquisition instructions are sent to described image acquisition equipment, the gray scale image acquisition instructions are used to indicate institute
Screen shot of the image capture device to the display screen when showing the target gray scale picture is stated, grayscale screen map is generated
Picture；
Grayscale RGB data is received from image capture device, wherein the grayscale RGB data is that described image acquires equipment
It is extracted from the image information of the grayscale screen picture；
Conversion calculating is carried out to the grayscale RGB data, obtains the grayscale chromaticity coordinate value.
Optionally, the image quality parameter to the display carries out within the scope of gamma corrected to target gamma value, comprising:
Default RGB gain is at least changed once for the grayscale RGB data, is become until for the grayscale RGB data
Gamma value after more default RGB gain is within the scope of the target gamma value.
It is optionally, described at least to change once default RGB gain for the grayscale RGB data, comprising:
RGB yield value is once preset for grayscale RGB data change；
Control the display screen based on when it is previous change default RGB yield value for the grayscale RGB data after image quality
Parameter shows the target gray scale picture again；
Obtain new grayscale chromaticity coordinate value of the display screen when showing the target gray scale picture again；
Verify whether the new grayscale chromaticity coordinate value deviates the benchmark coloration coordinate range；
If so, the step of once presetting RGB yield value for grayscale RGB data change is returned to, if it is not, really
Gamma value after the settled previous default RGB gain for grayscale RGB data change is within the scope of the target gamma value.
Optionally, the grayscale chromaticity coordinate in the verifying display screen when showing the target gray scale picture again
Whether value deviates after the benchmark coloration coordinate range, further includes:
If so, sending store instruction to described image acquisition equipment, the store instruction is used to indicate described image and adopts
Collect equipment storage last time to RGB data transmitted by display.
Optionally, the deviation benchmark coloration coordinate range includes coloration X-coordinate range and coloration Y-coordinate range, wherein
The coloration X-coordinate range is 0.313 ± 0.005, and the coloration Y-coordinate range is y=0.329 ± 0.005.
Second aspect, the embodiment of the present invention provide a kind of display image quality calibrating installation, are applied in display, the dress
It sets and includes:
First coordinate obtaining unit, for obtaining whole white degree of the display screen of the display when showing complete white picture
Coordinate value；
First calibration unit, for judging whether the whole white degree coordinate value deviates benchmark coloration coordinate range, if
It is that colour temperature is carried out to the image quality parameter of the display and is calibrated in target reference color temperature, wherein the benchmark chromaticity coordinate model
It encloses corresponding with the target reference color temperature；
Second coordinate obtaining unit, for obtaining grayscale chromaticity coordinate of the display screen in displaying target grey menu
Value；
Second calibration unit, for judging whether the grayscale chromaticity coordinate value deviates the benchmark coloration coordinate range,
If so, the image quality parameter to the display carries out within the scope of gamma corrected to target gamma value, wherein the benchmark coloration
Coordinate range is corresponding with the target gamma value range.
Optionally, first coordinate obtaining unit, comprising:
First control subelement shows the complete white picture for controlling the display screen；
First transmission sub-unit, for sending full white image acquisition instructions to image capture device, the full white image is adopted
Collection instruction is used to indicate described image acquisition equipment and shoots to screen of the display screen when showing the complete white picture,
Generate all white screen image；
First receiving subelement, for receiving complete white RGB data from described image acquisition equipment, wherein the complete white RGB
Data are that described image acquisition equipment is extracted from the image information of all white screen image；
First conversion subunit obtains the whole white degree coordinate for carrying out conversion calculating to the complete white RGB data
Value.
Optionally, first calibration unit, comprising:
Subelement is changed in first gain, at least changing once default RGB yield value for the complete white RGB data,
Color temperature value after changing default RGB yield value for the complete white RGB data is in the target reference color temperature.
Optionally, subelement is changed in the gain, is specifically used for:
RGB yield value is once preset for the complete white RGB data change；
Control the display screen based on when it is previous change default RGB yield value for the complete white RGB data after image quality
Parameter shows the complete white picture again；
Obtain new whole white degree coordinate value of the display screen when showing the complete white picture again；
Verify whether the new whole white degree coordinate value deviates the benchmark coloration coordinate range；
If so, the step of changing once default RGB yield value for the complete white RGB data is returned to, if it is not, really
The settled previous color temperature value for after the complete white default RGB yield value of RGB data change is in the target reference color temperature.
Optionally, second coordinate obtaining unit, comprising:
Second control subelement shows the target gray scale picture for controlling the display screen, and the target gray scale is drawn
Face successively takes multiple one prestored in grey menu；
Second transmission sub-unit, for sending gray scale image acquisition instructions, the gray-scale figure to described image acquisition equipment
As acquisition instructions are used to indicate screen of the described image acquisition equipment to the display screen when showing the target gray scale picture
Shooting generates grayscale screen picture；
Second receiving subelement, for receiving grayscale RGB data from image capture device, wherein the grayscale RGB data
Equipment is acquired for described image to extract from the image information of the grayscale screen picture；
Second conversion subunit obtains the grayscale chromaticity coordinate for carrying out conversion calculating to the grayscale RGB data
Value.
Optionally, second calibration unit, comprising:
Subelement is changed in second gain, at least changing once default RGB gain for the grayscale RGB data, directly
The gamma value after RGB gain is preset within the scope of the target gamma value to for grayscale RGB data change.
Optionally, subelement is changed in second gain, is specifically used for:
RGB yield value is once preset for grayscale RGB data change；
Control the display screen based on when it is previous change default RGB yield value for the grayscale RGB data after image quality
Parameter shows the target gray scale picture again；
Obtain new grayscale chromaticity coordinate value of the display screen when showing the target gray scale picture again；
Verify whether the new grayscale chromaticity coordinate value deviates the benchmark coloration coordinate range；
If so, the step of once presetting RGB yield value for grayscale RGB data change is returned to, if it is not, really
Gamma value after the settled previous default RGB gain for grayscale RGB data change is within the scope of the target gamma value.
Optionally, described device further include:
It is not inclined to verify the new grayscale chromaticity coordinate value for the second gain change subelement for store instruction transmission unit
In the case where from the benchmark coloration coordinate range, store instruction is sent to described image acquisition equipment, the store instruction is used
The grayscale chromaticity coordinate value transmitted by instruction described image acquisition equipment storage last time.
Optionally, the deviation benchmark coloration coordinate range includes coloration X-coordinate range and coloration Y-coordinate range, wherein
The coloration X-coordinate range is 0.313 ± 0.005, and the coloration Y-coordinate range is y=0.329 ± 0.005.
The third aspect, the embodiment of the present invention provide a kind of display, including display master chip, display screen ontology, storage
Device and storage on a memory and the program that can be run on display master chip, the display master chip execute the journey
Step described in any embodiment in first aspect is realized when sequence.
One or more technical solution provided in an embodiment of the present invention, at least realizes following technical effect or advantage:
Whole white degree coordinate value of the display screen of display when showing complete white picture is obtained, if the whole white degree obtained
Coordinate value deviates benchmark coloration coordinate range, adjusts the colour temperature of display to aim colour corresponding with benchmark coloration coordinate range
In warm range；Grayscale chromaticity coordinate value of the display screen in displaying target grey menu is obtained, if grayscale chromaticity coordinate value is inclined
From benchmark coloration coordinate range, the gamma value of display is adjusted to target gamma value model corresponding with benchmark coloration coordinate range
In enclosing, so as to determine whether to carry out colour temperature only obtaining chromaticity coordinate value when showing complete white picture and grey menu
Calibration, gamma value calibration simplify the mistake of display image quality calibration without video card output and display screen reduction effect is considered
Journey improves display image quality calibration efficiency.And due to being not need to rely on the external picture provided with image quality calibration mode
Therefore matter calibrator (-ter) unit is not in the unstable problem of calibration standard.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is the flow chart of display image quality calibration method provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of a scenario for obtaining RGB data in the embodiment of the present invention based on image capture device；
Fig. 3 is the module map of display image quality calibrating installation provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of display provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention solves the prior art to display image quality by providing a kind of display image quality calibration method
The technical problem of the process complexity of calibration.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
A kind of display image quality calibration method provided in an embodiment of the present invention is applied in display control apparatus, display
Device control device can be for applied to the master chip in display, display includes master chip and display screen.Refering to what is shown in Fig. 1,
The display image quality calibration method includes the following steps:
Firstly, executing step S101, obtaining whole white degree coordinate value of the display screen of display when showing complete white picture.
It, can there are many implement specifically, in order to obtain whole white degree coordinate value of the display screen when showing complete white picture
Mode, in the following, providing two embodiments:
A kind of embodiment are as follows: the whole white degree coordinate for obtaining display screen when showing complete white picture is handled by screenshotss
Value, implementation process specifically:
Execute step S1011: control display screen shows complete white picture；
Specifically, by sending complete white picture to display to display screen, so that display screen shows complete white picture.
After step S1011, step S1012 is executed: obtaining the instruction of the first screenshotss, instructed according to the first screenshotss to display
Shield in the screen progress all white screen screenshot for showing complete white picture, complete white RGB is extracted from the image information of all white screen screenshot
(primaries mode) data carry out conversion calculating to the complete white RGB data extracted in screenshot capture, obtain whole white degree coordinate
Value.
It should be noted that complete white RGB data is RGB data when showing complete white picture for display screen, it is used for and shows
Display screen shows RGB data difference when grey menu.RGB is a kind of color standard of industry, is by red (R), green
(G), the variation and their mutual superpositions of blue (B) three Color Channels obtains miscellaneous color, and R, G, B are
It is the corresponding color for representing three channels of red, green, blue.
Another embodiment are as follows: whole white degree of the display screen when showing complete white picture is obtained by image capture device
Coordinate value, specific implementation process include the following steps S1011 '~S1014 ':
S1011 ': control display screen shows complete white picture.
Specifically, complete white picture to display is sent to display screen, so that showing complete white picture in display screen.
S1012 ': full white image acquisition instructions are sent to image capture device, full white image acquisition instructions are used to indicate figure
Screen of the display screen when showing complete white picture is shot as acquiring equipment, generates all white screen image.
Specifically, the real time communication established between image capture device and display connects before executing step S1012 '
It connects, the real-time Data Transmission between image capture device and display, for example, refering to what is shown in Fig. 2, can be over the display
It is arranged hot key (HotKey), the corresponding control APP of installation on image capture device receives user's operation by the hot key of display
When, communication instruction is sent to image capture device, after image capture device receives communication instruction, is established with image capture device
Real time communication connection.
In specific implementation process, it is provided with USB (Universal Serial Bus, universal serial bus) over the display
Interface is connect with image capture device by USB interface.Communication instruction is sent to image capture device by USB interface.When
So, it can also be connected by bluetooth connection, WIFI to image capture device and send communication instruction, so that image capture device responds
In communication instruction, real time communication is established with display and is connect.
It with reference to scene shown in Fig. 2, is connect based on the real time communication between image capture device, to image capture device
Photographing instruction is sent, instruction image capture device shoots screen of the display screen when showing complete white picture, to generate
All white screen image of the display screen when showing complete white picture.
In specific implementation process, all white screen image generated can be some or all of display screen.
After step S1012 ', step S1013 ' is executed: receiving complete white RGB data from image capture device, wherein complete
White RGB data is that image capture device is extracted from the image information of all white screen image.
After step S1013 ', step S1014 ' is executed: conversion calculating being carried out to complete white RGB data, obtains whole white
Spend coordinate value.
Specifically, whole white degree coordinate value is in CIE (Commission Internationale de L'
Eclairage, International Commission on Illumination) color space x coordinate value and y-coordinate value constitute.
In the specific implementation process, conversion calculating can be carried out to complete white RGB data by following conversion formula, to count
Calculate the XYZ coordinate data in CIE color space:
The x coordinate value and y-coordinate value of CIE color space are calculated by the XYZ coordinate data conversion of CIE color space again.
Specifically, XYZ coordinate data are converted to the x coordinate value and y-coordinate value of CIE color space by following formula:
After step slol, it then executes step S102: judging whether whole white degree coordinate value deviates benchmark coloration seat
Range is marked, is calibrated in target reference color temperature if so, carrying out colour temperature to the image quality parameter of display, wherein the reference colours
Spend coordinate range and target reference color temperature.
It should be noted that if whole white degree coordinate value in benchmark coloration coordinate range, whole white degree coordinate value
Without departing from benchmark coloration coordinate range, if whole white degree coordinate value is not in benchmark coloration coordinate range, it is determined that Quan Bai
Chromaticity coordinate value deviates benchmark coloration coordinate range.
Benchmark coloration coordinate range is made of the x coordinate range of CIE color space and y-coordinate range, x coordinate range and y
The numberical range that coordinate range can need to be arranged for user according to oneself.Target reference color temperature passes through x coordinate range and y-coordinate
Range computation obtains.
In the specific implementation, x coordinate may range from 0.313 ± 0.005, and y-coordinate may range from 0.329 ± 0.005.
The color centered on 6500K can be calculated by x coordinate range 0.313 ± 0.005 and y-coordinate range 0.329 ± 0.00
Warm range.
Specifically, judge whether whole white degree coordinate value deviates benchmark coloration coordinate range, specifically: whole white degree is sat
Scale value and benchmark coloration coordinate range carry out the first comparison operation, and the result based on the first comparison operation judges whole white degree coordinate
Whether value deviates benchmark coloration coordinate range.
Specifically, if any of the x coordinate value of whole white degree coordinate value, y-coordinate value are not sat in benchmark coloration
It marks within the scope of the corresponding x coordinate of range, then shows to deviate benchmark coloration coordinate range.For example, the x coordinate of whole white degree coordinate value
Value is less than the lower limit value of x coordinate range, then shows that whole white degree coordinate value exceeds and deviate benchmark coloration coordinate range, for another example,
If the y-coordinate value of whole white degree coordinate value is greater than the upper limit value of y-coordinate range, show to deviate benchmark coloration coordinate range.
For example, if whole white degree coordinate value are as follows: x=0.32, y=0.35 then deviate benchmark coloration coordinate range；
If whole white degree coordinate value are as follows: x=0.30, y=0.31 then deviate benchmark coloration coordinate range；Whole white degree coordinate value are as follows:
X=0.313, y=0.329, then in benchmark coloration coordinate range.
In step s 102, colour temperature is carried out to the image quality parameter of display and calibrates to the specific calibration in target reference color temperature
Mode can be with are as follows: is adjusted to RGB gain, so that the color temperature value after adjustment RGB gain is in target reference color temperature, to realize
Colour temperature calibration to the image quality parameter of display.
Specifically, being adjusted process to RGB gain can be with are as follows: then at least change for complete white RGB data once pre-
If RGB yield value, the color temperature value after changing default RGB yield value for complete white RGB data is in target reference color temperature
It is interior.
It should be noted that default RGB yield value refers to a series of RGB gains pre-set in the display
Value.RGB yield value is by R yield value, B yield value, these three yield values of G yield value composition.In specific implementation process, for complete white
RGB data at least changes once default RGB yield value specifically: according to whole white degree coordinate value and benchmark coloration coordinate range it
Between difference value, R yield value, B yield value, G yield value are adjusted separately, until color temperature value is in target reference color temperature.
In the following, at least changing primary default RGB gain for complete white RGB data of the display screen when showing complete white picture
Implementation process is described in detail, and includes the following steps S1021~S1025:
S1021: RGB yield value is once preset for complete white RGB data change.
S1022: control display screen based on when it is previous change default RGB yield value for complete white RGB data after image quality join
Number carries out showing complete white picture again.
Specifically, complete white picture is retransmitted to display screen in S1022, so that display screen is based on when previous change is pre-
If the image quality parameter after RGB yield value carries out showing complete white picture again.
S1023: new whole white degree coordinate value of the display screen when showing complete white picture again is obtained.
Whole white degree coordinate value is obtained in the embodiment and step S101 of new whiteness coordinate value specifically, obtaining
Embodiment is same or similar, specifically, can be handled by screenshotss and obtain new whole white degree coordinate value, or passed through
Image capture device obtains new whole white degree coordinate value.
For the embodiment for obtaining new whole white degree coordinate value by image capture device, specific implementation process can be with
Are as follows: photographing instruction again is sent to image capture device, photographing instruction is used to indicate image capture device and exists to display screen again
Again show that screen when complete white picture is shot, and new all white screen image is generated；Image capture device is from new complete white
Extract new complete white RGB data in the image information of screen picture, and send display master chip, thus display master chip from
Image capture device receives new complete white RGB data, and carries out conversion calculating to new complete white RGB data, obtains new complete white
Chromaticity coordinate value.
S1024: verify whether new whole white degree coordinate value deviates benchmark coloration coordinate range.
Specifically, being verified new by the way that new whole white degree coordinate value is made comparisons operation with benchmark coloration coordinate range
Whether whole white degree coordinate value deviates benchmark coloration coordinate range.Concrete mode can refer to whether judge whole white degree coordinate value
Deviate the implementation process of benchmark coloration coordinate range.
S1025: if the verification result of step S1024 be it is yes, return to primary default for complete white RGB data change
The step of RGB yield value, changes color temperature value after presetting RGB yield value for complete white RGB data when previous if it is not, determining
In target reference color temperature.
In the present invention, the mobile terminal of camera can be set in image capture device, for example, smart phone, plate
Computer, personal computer etc. so that colour temperature calibration does not need to buy special image quality calibrator (-ter) unit again, and simplify color
Warm calibration process.
After step s 102, it then executes step S103, obtain grayscale of the display screen in displaying target grey menu
Chromaticity coordinate value.
It, can be there are many embodiment party in order to obtain grayscale chromaticity coordinate value of the display screen in displaying target grey menu
Formula, in the following, providing two kinds of embodiments:
Embodiment one are as follows: the grayscale chromaticity coordinate for obtaining display screen in displaying target grey menu is handled by screenshotss
Value, implementation process is specially S1031~S1032:
Firstly, executing step S1031: control display screen displaying target grey menu.
Specifically, by sending target gray scale picture to display to display screen, so that display screen shows target ash
Rank picture.
After step S1031, step S1032 is executed: obtaining the instruction of the second screenshotss, instructed according to the second screenshotss to display
Shield the screen in displaying target grey menu and carry out grayscale grayscale screenshot capture, ash is extracted from the image information of screenshot capture
Rank RGB data.
It should be noted that RGB data when grayscale RGB data is for display screen displaying target grey menu, only
It distinguishes and names with RGB data of the display screen in displaying target grey menu.
Embodiment two are as follows: grayscale coloration of the display screen in displaying target grey menu is obtained by image capture device
Coordinate value.Specific implementation process can be following S1031 '~S1032 ':
S1031 ': control display screen displaying target grey menu, target gray scale picture, which successively takes, multiple prestores grey menu
In one.
Specifically, current target gray scale picture to display in grey menu is prestored to display screen transmission is multiple, so that
Target gray scale picture is shown in display screen, it should be noted that is carrying out gamma for the target gray scale picture currently shown
After calibrating within the scope of target gamma value, control display screen shows next target gray scale picture, until each grayscale prestored is drawn
Face carries out within the scope of gamma corrected to target gamma value.
S1032 ': gray scale image acquisition instructions are sent to image capture device, gray scale image acquisition instructions refer to for controlling
Show that screen of the image capture device to display screen in displaying target grey menu is shot；
Specifically, with reference to schematic diagram of a scenario shown in Fig. 2, based on the real time communication between image capture device connect to
Image capture device sends photographing instruction, instruction image capture device to screen of the display screen in displaying target grey menu into
Row shooting image, to obtain grayscale screen picture of the display screen in displaying target grey menu.
S1033 ': from image capture device receive grayscale RGB data, wherein grayscale RGB data be image capture device from
It is extracted in the image information of grayscale screen picture；
S1034 ': conversion calculating is carried out to grayscale RGB data, obtains grayscale chromaticity coordinate value.
Grayscale whiteness coordinate value is x coordinate value and the y-coordinate value composition in CIE color space, grayscale whiteness coordinate
The x coordinate value and y-coordinate value of value can refer to the calculating process that whole white degree coordinate value is obtained in step S1014 ', in order to illustrate
Book it is succinct, repeat no more.
After step s 103, it then executes step S104: judging whether grayscale chromaticity coordinate value deviates benchmark coloration seat
Range is marked, if so, the image quality parameter to display carries out within the scope of gamma corrected to target gamma value, wherein benchmark coloration
Coordinate range corresponds to target gamma value range.
After S104, if it is determined that grayscale chromaticity coordinate value is without departing from benchmark coloration coordinate range, then by step S103
In based on when it is previous change default RGB yield value for complete white RGB data after default RGB yield value save to EEPROM.
It should be noted that if grayscale chromaticity coordinate value in benchmark coloration coordinate range, grayscale chromaticity coordinate value
Without departing from benchmark coloration coordinate range, if grayscale chromaticity coordinate value is beyond in benchmark coloration coordinate range, grayscale coloration is sat
Scale value deviates benchmark coloration coordinate range.
Specifically, judge whether grayscale chromaticity coordinate value deviates benchmark coloration coordinate range, specifically: grayscale coloration is sat
Scale value and benchmark coloration coordinate range carry out the second comparison operation, and the result based on the second comparison operation judges full shade of gray coordinate
Whether value deviates benchmark coloration coordinate range.
Specifically, if any of the x coordinate value of grayscale chromaticity coordinate value, y-coordinate value are not sat in benchmark coloration
It marks in the corresponding coordinate range of range, then shows to deviate benchmark coloration coordinate range.For example, the x coordinate in shade of gray coordinate value
Value is greater than the upper limit value of x coordinate range, then grayscale chromaticity coordinate value is beyond benchmark coloration coordinate range is deviateed, for example, shade of gray
Y-coordinate value in coordinate value is less than the lower limit value of y-coordinate range, then shows that grayscale chromaticity coordinate value is sat beyond benchmark coloration is deviateed
Mark range.
Specifically, if grayscale chromaticity coordinate value is greater than the upper limit value of benchmark coloration coordinate range, grayscale coloration is sat
Scale value is beyond benchmark coloration coordinate range is deviateed, if grayscale chromaticity coordinate value is less than the lower limit value of benchmark coloration coordinate range,
Then grayscale chromaticity coordinate value is beyond deviation benchmark coloration coordinate range.
It should be noted that grayscale chromaticity coordinate value is chromaticity coordinate value of the display screen in displaying target grey menu.
" grayscale " in grayscale chromaticity coordinate value is only used for chromaticity coordinate value of the display screen in displaying target grey menu and distinguishes name.
In step S104, the specific school within the scope of gamma corrected to target gamma value is carried out to the image quality parameter of display
Quasi- mode can be with are as follows: RGB gain is adjusted, so that the gamma value after adjustment RGB gain is within the scope of target gamma value, from
And it realizes and gamma value calibration is carried out to the image quality parameter of display.
Specifically, being adjusted process to RGB gain can be with are as follows: then at least change for grayscale RGB data once pre-
If RGB yield value, the gamma value after changing default RGB yield value for grayscale RGB data is in target gamma value model
In enclosing.
It should be noted that RGB yield value is by R yield value, B yield value, these three yield values of G yield value composition.Specifically
In implementation process, default RGB yield value is at least changed once for grayscale RGB data specifically: according to grayscale chromaticity coordinate value
With the difference value between benchmark coloration coordinate range, adjustment R yield value, B yield value, G yield value are adjusted separately, until
Gamma value is within the scope of target gamma value.
In the following, at least changing primary default RGB gain for complete white RGB data of the display screen when showing complete white picture
Implementation process provides an embodiment, includes the following steps S1041~S1045:
S1041: RGB yield value is once preset for the change of grayscale RGB data.
Specifically, grayscale RGB data is the RGB data that display screen is obtained in displaying target grey menu.
S1042: control display screen is based on when the previous image quality ginseng being directed to after grayscale RGB data changes default RGB yield value
Count displaying target grey menu again.
Specifically, target gray scale picture is retransmitted to display screen in S1042, so that display screen is based on working as previous change
Image quality parameter after more default RGB yield value carries out displaying target grey menu again.
S1043: new grayscale chromaticity coordinate value of the display screen in displaying target grey menu again is obtained.
Implement specifically, obtaining and obtaining grayscale chromaticity coordinate value in the embodiment and step S102 of grayscale chromaticity coordinate value
Mode is same or similar, new grayscale chromaticity coordinate value can be specifically handled by screenshotss, or pass through image capture device
Obtain new grayscale chromaticity coordinate value.
New grayscale chromaticity coordinate value can be handled by screenshotss, or new grayscale color is obtained by image capture device
It spends for the embodiment of coordinate value, sends photographing instruction again to image capture device, indicate image capture device to display
Shield the screen when showing grey menu again to be shot, generates new grayscale screen picture；Image capture device is from new
New grayscale RGB data is extracted in grayscale screen picture, and is sent to display master chip, so that display master chip is from image
Acquisition equipment receives new grayscale RGB data, and carries out conversion calculating to new grayscale RGB data, obtains new grayscale coloration
Coordinate value.
S1044: verify whether new grayscale chromaticity coordinate value deviates benchmark coloration coordinate range.
Specifically, being verified new by the way that new grayscale chromaticity coordinate value is made comparisons operation with benchmark coloration coordinate range
Whether grayscale chromaticity coordinate value deviates benchmark coloration coordinate range.
S1045: if so, the step of once presetting RGB yield value for the change of grayscale RGB data is returned, if it is not,
It determines and changes gamma value after presetting RGB gain within the scope of target gamma value for grayscale RGB data when previous.
Specifically, target gamma value can be 2.2, and target gamma value range is based on by benchmark coloration coordinate range
X coordinate range and y-coordinate range computation obtain to be numberical range centered on target gamma value 2.2.
Target gray scale picture shown by display screen is successively to take multiple one prestored in target gray scale picture.It is specific next
It says, one group of data that 256 numerical value that original gamma value table (Gamma table) is 0~255 forms, corresponding 256 grayscale,
In the present embodiment.256 grayscale are divided into multiple target gray scale pictures in 10IRE~100IRE, IRE (Institute
Of Radio Engineers) it is a unit in video measuring.For example, 256 grayscale can be divided into 10 grayscale
Picture.Step S103~S104 is executed to each grey menu, thus when showing each grey menu respectively to display screen, to display
The image quality parameter of device carries out within the scope of gamma corrected to target gamma value, to ensure to reach 2.2 gamma value under all grayscale.
In the specific implementation process, it verifies after whether new grayscale chromaticity coordinate value deviate benchmark coloration coordinate range,
Further include: if new grayscale chromaticity coordinate value will become when previous for grayscale RGB data without departing from benchmark coloration coordinate range
Default RGB yield value after more default RGB yield value is saved to EEPROM (Electrically Erasable
Programmable read only memory, Electrically Erasable Programmable Read-Only Memory).
Further, after S104, can also include the following steps: to send RGB data storage to image capture device
Instruction, instruction image capture device storage are finally once sent to the RGB data of display master chip.Final primary display master
It is that image quality calibration reaches expected RGB data that the RGB data of chip, which may be considered, to store on the image capture device
RGB data is sent to next display when connecting next display, so that the shared of image quality data is realized, so that next display
Device carries out image quality calibration according to for the RGB data on image capture device, reduces the picture quality difference between multi-display, and
And the process that image quality is calibrated between multi-display is simplified, and, it is ensured that the effect of the image quality calibration between multiple displays is consistent
Property.
In the following, refering to what is shown in Fig. 3, based on image capture device be the mobile phone with camera for, to mobile phone and display
Interaction between device master chip realizes that the process of display image quality calibration carries out citing description:
S1: when user presses the hot key being arranged on the first display, the master chip of the first display generates communication instruction hair
Give mobile phone.
S2: mobile phone receives the communication instruction that the master chip of the first display is sent, so that mobile phone and the first display
Real time communication connection is established between master chip.
The master chip of S3: the first display sends the display screen of built-in complete white picture to the first display, aobvious first
Show the display screen display of device white picture entirely.The master chip of first display sends the first image capture instruction to mobile phone.
S4: mobile phone controls camera to the first display for showing complete white picture in response to the first image capture instruction
Display screen is taken pictures, and is generated all white screen image and is sent to the master chip of the first display, from the figure of all white screen image
As extracting RGB data in information and sending master chip.
The master chip of S5: the first display receives the RGB extracted from the image information of all white screen image from mobile phone
After data, conversion is calculated as the xy coordinate value of CIE color space.
The master chip of S6: the first display by the corresponding xy coordinate value of all white screen image and benchmark coloration coordinate range it
Between make comparisons operation, if comparing the corresponding xy coordinate value of all white screen image deviates benchmark coloration coordinate range, execute
Otherwise S7 executes S8.
The master chip change once default RGB yield value, and return step S3 of S7: the first display.
The master chip of S8: the first display sends a built-in target gray scale picture to display screen, in the first display
Display screen display grey menu, the master chip of the first display sends the second image capture instruction to mobile phone.
S9: mobile phone controls display screen of the camera to display grey menu when and carries out in response to the second image capture instruction
It takes pictures and generates grayscale screen picture, RGB data is extracted from the image information of grayscale screen picture and be sent to the first display
Master chip.
What the master chip of the S10: the first display was extracted from the image information for the slave grayscale screen picture that mobile phone receives
After RGB data, conversion is calculated as the xy coordinate value of CIE color space.
The master chip of S11: the first display is by the corresponding xy coordinate value of grayscale screen picture and benchmark coloration coordinate range
Between make comparisons operation, if comparing the corresponding xy coordinate value of grayscale screen picture deviates benchmark coloration coordinate range, execute
Otherwise step S12 executes step S13.
RGB yield value and return step S8 are once preset in the master chip change of S12: the first display.
The master chip of S13: the first display saves the default RGB yield value after change to EEPROM.
The master chip of S14: the first display sends store instruction to mobile phone；
S15: mobile phone receives and responds to store instruction, stores final RGB data, final RGB data be mobile phone last
The secondary RGB data for being sent to the first display.
S16: mobile phone connects second display, when user presses the hot key being arranged on second display, second display
Master chip generates communication instruction and is sent to mobile phone.
S17: mobile phone receives the communication instruction that the master chip of second display is sent, so that mobile phone and second display
Real time communication connection is established between master chip.
S18: mobile phone sends final RGB data to the master chip of second display, and the master chip of second display is according to most
Whole RGB data is carried out to the colour temperature calibration of second display and gamma corrected.
Based on the same inventive concept, the embodiment of the present invention provides a kind of display image quality calibrating installation, is applied to display
In, refering to what is shown in Fig. 3, the display image quality calibrating installation includes:
First coordinate obtaining unit 301, for obtaining whole white degree of the display screen of display when showing complete white picture
Coordinate value；
First calibration unit 302, for judging whether whole white degree coordinate value deviates benchmark coloration coordinate range, if
It is that colour temperature is carried out to the image quality parameter of display and is calibrated in target reference color temperature, wherein benchmark coloration coordinate range and target
Reference color temperature is corresponding；
Second coordinate obtaining unit 303, for obtaining grayscale chromaticity coordinate of the display screen in displaying target grey menu
Value；
Second calibration unit 304, for judging whether grayscale chromaticity coordinate value deviates benchmark coloration coordinate range, if
It is to be carried out within the scope of gamma corrected to target gamma value to the image quality parameter of display, wherein benchmark coloration coordinate range and mesh
It is corresponding to mark gamma value range.
Optionally, the first coordinate obtaining unit 301, comprising:
First control subelement shows complete white picture for controlling display screen；
First transmission sub-unit, for sending full white image acquisition instructions to image capture device, full white image acquisition refers to
Order is used to indicate image capture device and shoots to screen of the display screen when showing complete white picture, generates all white screen figure
Picture；
First receiving subelement, for receiving complete white RGB data from image capture device, wherein complete white RGB data is figure
As acquisition equipment is extracted from the image information of all white screen image；
First conversion subunit obtains whole white degree coordinate value for carrying out conversion calculating to complete white RGB data.
Optionally, the first calibration unit 302, comprising:
Subelement is changed in first gain, at least changing once default RGB yield value for complete white RGB data, until
Color temperature value after changing default RGB yield value for complete white RGB data is in target reference color temperature.
Optionally, subelement is changed in gain, is specifically used for:
RGB yield value is once preset for complete white RGB data change；
Display screen is controlled based on when the previous white RGB data entirely that is directed to changes image quality parameter after presetting RGB yield value again
Show complete white picture；
Obtain new whole white degree coordinate value of the display screen when showing complete white picture again；
Verify whether new whole white degree coordinate value deviates benchmark coloration coordinate range；
If so, the step of changing once default RGB yield value for complete white RGB data is returned to, if it is not, determination is worked as
It is previous to change the color temperature value after presetting RGB yield value in target reference color temperature for complete white RGB data.
Optionally, the second coordinate obtaining unit 303, comprising:
Second control subelement, for controlling display screen displaying target grey menu, target gray scale picture successively takes multiple
Prestore one in grey menu；
Second transmission sub-unit, for sending gray scale image acquisition instructions to image capture device, gray scale image acquisition refers to
Order is used to indicate screen shot of the image capture device to display screen in displaying target grey menu, generates grayscale screen map
Picture；
Second receiving subelement, for receiving grayscale RGB data from image capture device, wherein grayscale RGB data is figure
As acquisition equipment is extracted from the image information of grayscale screen picture；
Second conversion subunit obtains grayscale chromaticity coordinate value for carrying out conversion calculating to grayscale RGB data.
Optionally, the second calibration unit 304, comprising:
Subelement is changed in second gain, at least changing once default RGB gain, Zhi Daozhen for grayscale RGB data
Gamma value after default RGB gain is changed within the scope of target gamma value to grayscale RGB data.
Optionally, subelement is changed in the second gain, is specifically used for:
RGB yield value is once preset for the change of grayscale RGB data；
Display screen is controlled based on when the previous grayscale RGB data that is directed to changes image quality parameter after presetting RGB yield value again
Displaying target grey menu；
Obtain new grayscale chromaticity coordinate value of the display screen in displaying target grey menu again；
Verify whether new grayscale chromaticity coordinate value deviates benchmark coloration coordinate range；
If so, the step of once presetting RGB yield value for the change of grayscale RGB data is returned to, if it is not, determination is worked as
It is previous to change the gamma value after default RGB gain within the scope of target gamma value for grayscale RGB data.
Optionally, the device further include:
Store instruction transmission unit verifies new grayscale chromaticity coordinate value without departing from base for the second gain change subelement
In the case where quasi- chromaticity coordinate range, store instruction is sent to image capture device, store instruction is used to indicate Image Acquisition and sets
Grayscale chromaticity coordinate value transmitted by standby storage last time.
Optionally, deviateing benchmark coloration coordinate range includes coloration X-coordinate range and coloration Y-coordinate range, wherein coloration
X-coordinate range is 0.313 ± 0.005, and coloration Y-coordinate range is y=0.329 ± 0.005.
Based on the same inventive concept, a kind of display is provided with reference to the embodiment of the present invention, refering to what is shown in Fig. 4, including display
Device master chip 401, display screen 402, memory 403 and be stored on memory 403 and can be transported on display master chip 401
Capable program, display master chip 401 realize any embodiment party in display image quality calibration method embodiment when executing program
The step of formula.
One or more technical solution provided in an embodiment of the present invention, at least realizes following technical effect or advantage:
Whole white degree coordinate value of the display screen of display when showing complete white picture is obtained, if the whole white degree obtained
Coordinate value deviates benchmark coloration coordinate range, adjusts the colour temperature of display to aim colour corresponding with benchmark coloration coordinate range
In warm range；Grayscale chromaticity coordinate value of the display screen in displaying target grey menu is obtained, if grayscale chromaticity coordinate value is inclined
From benchmark coloration coordinate range, the gamma value of display is adjusted to target gamma value model corresponding with benchmark coloration coordinate range
In enclosing, so as to determine whether to carry out colour temperature only obtaining chromaticity coordinate value when showing complete white picture and grey menu
Calibration, gamma value calibration do not need to imitate without considering that video card is exported with display screen reduction using specific image quality calibrator (-ter) unit
Fruit simplifies the process of display image quality calibration, improves display image quality calibration efficiency.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (11)
1. a kind of display image quality calibration method characterized by comprising
Obtain whole white degree coordinate value of the display screen of the display when showing complete white picture；
Judge whether the whole white degree coordinate value deviates benchmark coloration coordinate range, if so, to the image quality of the display
Parameter carries out colour temperature and calibrates in target reference color temperature, wherein the benchmark coloration coordinate range and the target reference color temperature
It is corresponding；
Obtain grayscale chromaticity coordinate value of the display screen in displaying target grey menu；
Judge whether the grayscale chromaticity coordinate value deviates the benchmark coloration coordinate range, if so, to the display
Image quality parameter carries out within the scope of gamma corrected to target gamma value, wherein the benchmark coloration coordinate range and the target gal
Horse value range is corresponding.
2. display image quality calibration method as described in claim 1, which is characterized in that the display for obtaining the display
Shield the whole white degree coordinate value when showing complete white picture, comprising:
It controls the display screen and shows the complete white picture；
Full white image acquisition instructions are sent to image capture device, the full white image acquisition instructions are used to indicate described image and adopt
Collection equipment shoots screen of the display screen when showing the complete white picture, generates all white screen image；
Complete white RGB data is received from described image acquisition equipment, wherein the complete white RGB data is that described image acquires equipment
It is extracted from the image information of all white screen image；
Conversion calculating is carried out to the complete white RGB data, obtains the whole white degree coordinate value.
3. display image quality calibration method as claimed in claim 1 or 2, which is characterized in that the picture to the display
Matter parameter carries out colour temperature and calibrates in target reference color temperature, comprising:
Default RGB yield value is at least changed once for the complete white RGB data, until for the complete white RGB data change
Color temperature value after default RGB yield value is in the target reference color temperature.
4. display image quality calibration method as claimed in claim 3, which is characterized in that described for the complete white RGB data
At least RGB yield value is once preset in change, comprising:
RGB yield value is once preset for the complete white RGB data change；
Control the display screen based on when it is previous change default RGB yield value for the complete white RGB data after image quality parameter
Again the complete white picture is shown；
Obtain new whole white degree coordinate value of the display screen when showing the complete white picture again；
Verify whether the new whole white degree coordinate value deviates the benchmark coloration coordinate range；
If so, the step of changing once default RGB yield value for the complete white RGB data is returned to, if it is not, determination is worked as
It is previous to change the color temperature value after presetting RGB yield value in the target reference color temperature for the complete white RGB data.
5. display image quality calibration method as described in claim 1, which is characterized in that the acquisition display screen is being shown
Grayscale chromaticity coordinate value when target gray scale picture, comprising:
It controls the display screen and shows the target gray scale picture, the target gray scale picture, which successively takes, multiple prestores grey menu
In one；
Gray scale image acquisition instructions are sent to described image acquisition equipment, the gray scale image acquisition instructions are used to indicate the figure
Screen shot as acquisition equipment to the display screen when showing the target gray scale picture, generates grayscale screen picture；
Grayscale RGB data is received from image capture device, wherein the grayscale RGB data acquires equipment from institute for described image
It states and is extracted in the image information of grayscale screen picture；
Conversion calculating is carried out to the grayscale RGB data, obtains the grayscale chromaticity coordinate value.
6. display image quality calibration method as claimed in claim 1 or 5, which is characterized in that the picture to the display
Matter parameter carries out within the scope of gamma corrected to target gamma value, comprising:
Default RGB gain is at least changed once for the grayscale RGB data, until pre- for grayscale RGB data change
If the gamma value after RGB gain is within the scope of the target gamma value.
7. display image quality calibration method as claimed in claim 6, which is characterized in that described to be directed to the grayscale RGB data
At least change once default RGB gain, comprising:
RGB yield value is once preset for grayscale RGB data change；
Control the display screen based on when it is previous change default RGB yield value for the grayscale RGB data after image quality parameter
Again the target gray scale picture is shown；
Obtain new grayscale chromaticity coordinate value of the display screen when showing the target gray scale picture again；
Verify whether the new grayscale chromaticity coordinate value deviates the benchmark coloration coordinate range；
If so, the step of once presetting RGB yield value for grayscale RGB data change is returned to, if it is not, determination is worked as
It is previous to change the gamma value after default RGB gain within the scope of the target gamma value for the grayscale RGB data.
8. display image quality calibration method as described in claim 1, which is characterized in that in the verifying display screen in weight
After newly showing whether the grayscale chromaticity coordinate value when target gray scale picture deviates the benchmark coloration coordinate range, also wrap
It includes:
If so, sending store instruction to described image acquisition equipment, the store instruction is used to indicate described image acquisition and sets
Standby storage is for the last time to RGB data transmitted by display.
9. display image quality calibration method as described in claim 1, which is characterized in that the deviation benchmark coloration coordinate range
Including coloration X-coordinate range and coloration Y-coordinate range, wherein the coloration X-coordinate range is 0.313 ± 0.005, the color
Degree Y-coordinate range is y=0.329 ± 0.005.
10. a kind of display image quality calibrating installation, it is applied in display, which is characterized in that described device includes:
First coordinate obtaining unit, for obtaining whole white degree coordinate of the display screen of the display when showing complete white picture
Value；
First calibration unit, for judging whether the whole white degree coordinate value deviates benchmark coloration coordinate range, if so, right
The image quality parameter of the display carries out colour temperature and calibrates in target reference color temperature, wherein the benchmark coloration coordinate range with
The target reference color temperature is corresponding；
Second coordinate obtaining unit, for obtaining grayscale chromaticity coordinate value of the display screen in displaying target grey menu；
Second calibration unit, for judging whether the grayscale chromaticity coordinate value deviates the benchmark coloration coordinate range, if
It is to be carried out within the scope of gamma corrected to target gamma value to the image quality parameter of the display, wherein the benchmark chromaticity coordinate
Range is corresponding with the target gamma value range.
11. a kind of display, which is characterized in that including display master chip, display screen ontology, memory and be stored in memory
On and the program that can be run on display master chip, which is characterized in that when the display master chip executes described program
Realize any step in claim 1-9.
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Application publication date: 20190611 |