CN102497559B - Picture quality regulation method and system for quick screen matching - Google Patents
Picture quality regulation method and system for quick screen matching Download PDFInfo
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- CN102497559B CN102497559B CN201110430429.0A CN201110430429A CN102497559B CN 102497559 B CN102497559 B CN 102497559B CN 201110430429 A CN201110430429 A CN 201110430429A CN 102497559 B CN102497559 B CN 102497559B
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Abstract
The invention discloses a picture quality regulation method for quick screen matching. The method comprises the following steps of: measuring a luminance value Lmax of a basic screen when the inside of a core outputs an all-white field signal to the basic screen, and measuring a luminance value Lreal of the basic screen when a signal generator outputs an all-white field signal to the basic screen; calculating a luminance attenuation factor K of the basic screen according to the Lmax and the Lreal; determining a Gamma parameter of the basic screen; acquiring a color parameter of the basic screen; and regulating the picture quality of a screen to be regulated according to the luminance attenuation factor K, the Gamma parameter and the color parameter of the basic screen. The invention also discloses a picture quality regulation system for the quick screen matching. By the method and the system, the picture quality of the screen can be automatically regulated, the screen matching cycle of a television can be shortened, and the research and development time of the television can be shortened.
Description
Technical field
The invention belongs to TV technology, particularly a kind of image quality control method and system of joining fast screen.
Background technology
Along with the development of TV tech, in television set R&D process, a movement need to be joined a lot of different display screens, and in this serial model No., and the adjustment of display screen image quality is all to take a certain basis screen to regulate as standard.In prior art, by joining screen personnel, manually debug, the quality of image quality is substantially all with naked eyes subjective judgement.Make like this cycle effect long and that recall of joining screen vary with each individual, if share the image quality parameter of basis screen completely, can not meet image quality requirement completely again.
Summary of the invention
Main purpose of the present invention is to provide a kind of image quality control method of joining fast screen, is intended to reduce joining the screen cycle of television set.
In order to realize goal of the invention, the invention provides a kind of image quality control method of joining fast screen, comprise the following steps:
The brightness value L max of the complete white field signal of measuring machine core inner output basis screen during to basis screen, and the brightness value L real of the complete white field signal of signal generator output basis screen during to basis screen;
According to Lmax and Lreal, calculate the brightness decay factor K that shield on basis;
Determine the Gamma parameter of basis screen;
Obtain the color parameter of basis screen;
According to the color parameter of described brightness decay factor K, Gamma parameter and basis screen, regulate the image quality of waiting to adjust screen.
Preferably, the described color parameter according to brightness decay factor K, Gamma parameter and basis screen regulates and waits to adjust the image quality of screen to comprise:
According to brightness decay factor K, regulate the luminance contrast curve of waiting to adjust screen;
According to Gamma parameter, adjust the brightness value of screen to regulate the Gamma curve of waiting to adjust screen with waiting;
According to the color parameter of basis screen, regulate the color of waiting to adjust screen.
Preferably, the color parameter that obtains basis screen described in specifically comprises:
Control signal generator exports respectively selected multiple signal of joining screen color to basis screen;
By each color of colour temperature instrument retaking of a year or grade corresponding brightness value and chromaticity coordinates value.
Preferably, according to the color parameter of basis screen, regulate and wait to adjust the color of screen specifically to comprise:
Control signal generator is exported respectively and is joined screen color signal to waiting to adjust screen;
Regulate tone, brightness or colourity register parameters to make to wait to adjust the brightness of the corresponding color of screen consistent with basis screen with chromaticity coordinates.
Preferably, describedly according to brightness decay factor K, regulate and wait to adjust the luminance contrast curve of screen specifically to comprise:
The complete white field signal of measuring machine core inner output is to wait to adjust the brightness value L max_1 of screen when adjusting screen; Export complete white field signal to treat the brightness value L real_1 of tune screen when adjusting screen with signal generator;
Regulate contrast level parameter to make Lreal_1=Lmax_1*K;
Obtain when adjusting screen at full black burst screen center brightness value Lreal_2;
According to described Lreal_2 and the contrast level parameter when the Lreal_1=Lmax_1*K, by linear interpolation, draw and wait the luminance contrast curve of adjusting screen corresponding.
Preferably, described according to Gamma parameter with wait to adjust the brightness value of screen to regulate and wait to adjust the Gamma curve of screen specifically to comprise:
According to luminance signals level, Gamma curve corresponding to described Gamma parameter is divided into some points, calculates the theoretical brightness value of each point under Lreal_1 brightness;
Control signal generator is exported the complete white field signal of corresponding luminance signals level to waiting to adjust screen;
Regulate white balance gains RGB-gain, make to get and wait to adjust the brightness value of screen to equal brightness value corresponding to described Gamma curve;
According to the linear interpolation between the RGB-gain value of described some points, obtain described Gamma curve.
The invention provides a kind of image quality regulating system of joining fast screen, it comprises colour temperature instrument, signal generator and data processing equipment, and wherein, described data processing equipment comprises:
Basis screen brightness processed module, the brightness value L max of basis screen when controlling the complete white field signal of colour temperature instrument measuring machine core inner output to basis screen, and the brightness value L real of the complete white field signal of signal generator output basis screen during to basis screen;
Computing module, for calculating according to Lmax and Lreal the brightness decay factor K that shield on basis;
Gamma parameter processing module, for determining the Gamma parameter of basis screen;
Color treatments module, for obtaining the color parameter of basis screen;
Wait to adjust screen image quality adjustment module, for regulating according to the color parameter of described brightness decay factor K, Gamma parameter and basis screen the image quality of waiting to adjust screen.
Preferably, described in, wait to adjust screen image quality adjustment module specifically for:
According to brightness decay factor K, regulate the luminance contrast curve of waiting to adjust screen;
According to Gamma parameter, adjust the brightness value of screen to regulate the Gamma curve of waiting to adjust screen with waiting;
According to the color parameter of basis screen, regulate the color of waiting to adjust screen.
Preferably, described basis screen brightness processed module is further used for control signal generator and exports respectively selected multiple signal of joining screen color to basis screen;
Described color treatments module is further by corresponding brightness value and the chromaticity coordinates value of each color of colour temperature instrument retaking of a year or grade.
Preferably, described in, wait to adjust screen image quality adjustment module to be further used for:
Control signal generator is exported respectively and is joined screen color signal to waiting to adjust screen;
Regulate tone, brightness or colourity register parameters to make to wait to adjust the brightness of the corresponding color of screen consistent with basis screen with chromaticity coordinates.
Preferably, described in, wait to adjust screen image quality adjustment module to be further used for:
The complete white field signal of measuring machine core inner output is to wait to adjust the brightness value L max_1 of screen when adjusting screen; Export complete white field signal to treat the brightness value L real_1 of tune screen when adjusting screen with signal generator;
Regulate contrast level parameter to make Lreal_1=Lmax_1*K;
Obtain when adjusting screen at full black burst screen center brightness value Lreal_2;
According to described Lreal_2 and the contrast level parameter when the Lreal_1=Lmax_1*K, by linear interpolation, draw and wait the luminance contrast curve of adjusting screen corresponding.
Preferably, described in, wait to adjust screen image quality adjustment module to be further used for:
According to luminance signals level, Gamma curve corresponding to described Gamma parameter is divided into some points, calculates the theoretical brightness value of each point under Lreal_1 brightness;
Control signal generator is exported the complete white field signal of corresponding luminance signals level to waiting to adjust screen;
Regulate white balance gains RGB-gain, make to get and wait to adjust the brightness value of screen to equal brightness value corresponding to described Gamma curve;
According to the linear interpolation between the RGB-gain value of described some points, obtain described Gamma curve.
The present invention regulates by calculating the decay factor K of basis screen the luminance contrast curve of waiting to adjust screen, obtains the Gamma parameter of basis screen and join the parameter value that shield relevant colors to regulate respectively and wait to adjust Gamma curve and the color of shielding.Realize the automatic adjusting of image quality, can improve and wait to adjust the high image quality effect of screen and the goodness of fit of basis screen, reduced joining the screen cycle of television set, shortened the research and development time of television set.
Accompanying drawing explanation
Fig. 1 is the image quality control method one embodiment schematic flow sheet that the present invention joins screen fast;
Fig. 2 is that the present invention joins the schematic flow sheet that obtains the color parameter of basis screen in image quality control method one embodiment of screen fast;
Fig. 3 is that the present invention joins the schematic flow sheet that regulates screen color to be adjusted in image quality control method one embodiment of screen fast;
Fig. 4 is that the present invention joins the process schematic representation that regulates screen color to be adjusted in image quality control method one embodiment of screen fast;
Fig. 5 is that the present invention joins fast and in image quality control method one embodiment of screen, regulates the schematic flow sheet of waiting to adjust screen luminance contrast curve;
Fig. 6 is that the present invention joins fast in image quality control method one embodiment of screen and regulates and wait to adjust screen Gamma curve schematic flow sheet;
Fig. 7 is the structural representation that the present invention joins image quality regulating system one embodiment of screen fast;
Fig. 8 is the structural representation that the present invention joins data processing equipment in image quality regulating system one embodiment of screen fast.
The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
With reference to Fig. 1, Fig. 1 is the image quality control method one embodiment schematic flow sheet that the present invention joins screen fast.This image quality control method of joining fast screen comprises the following steps:
Step S10, the brightness value L max of the complete white field signal of measuring machine core inner output basis screen during to basis screen, and the brightness value L real of the complete white field signal of signal generator output basis screen during to basis screen; In the embodiment of the present invention, can pre-configured colour temperature instrument, PC (Personal Computer, PC) and signal generator, and PC is connected with TV by debugging acid, PC is connected with colour temperature instrument, and PC is connected with signal generator, and signal generator is connected with TV.PC end is installed the driver of colour temperature instrument and signal source, can directly pass through PC control instrument.In addition, also at PC end, install one and control software, to control whole flow process.In the embodiment of the present invention, can send complete white test pictures instruction to TV set core by PC, TV set core is exported whole audience white signal to basis screen according to this complete white test pictures instruction, adopt colour temperature instrument to catch the monochrome information at basic screen center, now, the brightness value at basic screen center is for shielding maximum brightness value L max in this basis.Can send complete white field signal instruction to signal generator by PC, signal generator sends whole audience white signal to basis screen according to this complete white field signal instruction, adopt colour temperature instrument to catch the monochrome information at basic screen center, now, the brightness value at basic screen center is the actual maximum brightness value L real of this basis screen.
Step S20, calculates according to Lmax and Lreal the brightness decay factor K that shield on basis; For example can by the formula of K=Lreal/Lmax, carry out computing by PC, obtain brightness decay factor K value.
Step S30, determines the Gamma parameter that shield on basis; For example, can the Gamma parameter in debug process and common Gamma parameter series model be consistent by PC, according to standard 2.2gamma, carry out follow-up flow process.Concrete, television set is joined screen personnel can be directly by input Gamma parameter in PC.
Step S40, obtains the color parameter that shield on basis; For example can export respectively and join screen relevant colors to basis screen by PC control signal generator, by colour temperature instrument, catch corresponding brightness and the chromaticity coordinates information of relevant colors, and this information is sent to PC, by PC, analyze brightness corresponding to relevant colors and chromaticity coordinates.Concrete, this color can at least comprise redness (R), green (G) and blue (B).By the signal command of PC output red to signal generator, signal generator shields according to this danger signal order output red signal to basis, PC obtains brightness and the chromaticity coordinates of this redness point by colour temperature instrument, get after the same method green and blue brightness and chromaticity coordinates.Further, the above-mentioned screen relevant colors of joining can also comprise cyan (C), purple (M), yellow (Y), the colour of skin (F).Adopt above-mentioned 7 kinds of colors, can improve the accuracy of color, make to wait to adjust screen more identical with the image quality effect of basis screen.
Step S50, regulates according to the color parameter of described brightness decay factor K, Gamma parameter and basis screen the image quality of waiting to adjust screen.Concrete, step S50 comprises: according to decay factor K, regulate and wait to adjust the luminance contrast curve of screen, according to Gamma parameter with wait to adjust the brightness value of screen to regulate and wait to adjust the Gamma curve of screen and regulate according to the color parameter of basis screen the color of waiting to adjust screen.
The present invention regulates by calculating the decay factor K of basis screen the luminance contrast curve of waiting to adjust screen, obtains the Gamma parameter of basis screen and join the parameter value that shield relevant colors to regulate respectively and wait to adjust Gamma curve and the color of shielding.Realize the automatic adjusting of image quality, can improve and wait to adjust the high image quality effect of screen and the goodness of fit of basis screen, reduced joining the screen cycle of television set, shortened the research and development time of television set.
With reference to Fig. 2, Fig. 2 is the schematic flow sheet that the present invention joins step S40 in image quality control method one embodiment of screen fast.As shown in Figure 2, step S40 comprises:
Step S41, control signal generator exports respectively selected multiple signal of joining screen color to basis screen; For example, PC control signal generator is joined screen color signal by 7 kinds of selected redness (R), green (G) and blue (B), cyan (C), purple (M), yellow (Y), the colours of skin (F) and by HDMI (High Definition Multimedia Interface, HDMI (High Definition Multimedia Interface)), is exported respectively basis to and shield.
Step S42, by each color of colour temperature instrument retaking of a year or grade corresponding brightness value and chromaticity coordinates value.PC is again by read back the respectively x of 7 kinds of colors of colour temperature instrument, and y coordinate figure and brightness value, as the color references of waiting to adjust screen.
Accordingly, with reference to Fig. 3, in the aforementioned embodiment, in above-mentioned steps S50, according to the color parameter of basis screen, regulate and wait to adjust the color of screen specifically can comprise:
Step S51, control signal generator is exported respectively and is joined screen color signal to waiting to adjust screen; For example, PC can be controlled signal generator and send respectively redness (R), green (G) and blue (B), cyan (C), purple (M), yellow (Y), the colour of skin (F) 7 kinds of looks altogether.
Step S52, regulates tone, brightness or colourity register parameters to make to wait to adjust the brightness of the corresponding color of screen consistent with basis screen with chromaticity coordinates.For example, the IHC (tone) of PC capable of regulating television set chip inside, IBC (brightness), the brightness that ICC (colourity) register parameters reaches every kind of color is consistent by foundation machine with chromaticity coordinates, guaranteed that like this two machine colour gamuts overlap substantially, color performance is consistent.As shown in Figure 4, the G ' (green) that for example waits to adjust screen has been offset with respect to the G (green) of basis screen, two color coordinatess are not corresponding, now can G ' (green) be corrected by adjusting IHC (tone), reach expressive force consistency.
With reference to Fig. 5, in the embodiment of the present invention, in abovementioned steps S50, according to above-mentioned decay factor K, regulate and wait to adjust the luminance contrast curve of screen to comprise:
Step S53, the complete white field signal of measuring machine core inner output is to wait to adjust the brightness value L max_1 of screen when adjusting screen; Export complete white field signal to treat the brightness value L real_1 of tune screen when adjusting screen with signal generator; In the embodiment of the present invention, also can control colour temperature instrument by PC and obtain Lmax_1 and Lreal_1 by the flow process of obtaining Lmax and Lreal in above-mentioned steps S10.
Step S54, regulates contrast level parameter to make Lreal_1=Lmax_1*K; For example, PC is according to the decay factor K of basis screen, calculating is when the maximum wait adjusting screen is Lmax_1, the actual maximum brightness value Lmax_1*K (K=Lreal/Lmax) that should reach in theory and actual maximum brightness value Lreal_1 compare, PC, by regulating contrast rating, makes the actual maximum Lmax_1*K that should reach in theory equal actual maximum Lreal_1.
Step S55, obtains when adjusting screen at full black burst, screen center brightness value Lreal_2; PC control signal generator sends full black burst, and the brightness by brightness adjusting register Shi Daitiaoping center no longer changes, and obtains by colour temperature instrument the brightness value that this waits to adjust screen.
Step S56, according to described Lreal_2 and the contrast level parameter when the Lreal_1=Lmax_1*K, is drawn and is waited the luminance contrast curve of adjusting screen corresponding by linear interpolation.PC adopts the method for linear interpolation to obtain luminance contrast curve according to above-mentioned contrast rating and brightness value.
According to Fig. 6, Fig. 6 is that the present invention joins fast in the image quality control method embodiment step S50 of screen according to Gamma parameter and waits to adjust the brightness value of screen to regulate the Gamma curve schematic flow sheet of waiting to adjust screen, and this flow process comprises the following steps:
Step S57, is divided into some points according to luminance signals level by Gamma curve corresponding to above-mentioned Gamma parameter, calculates the brightness value under Lreal_1 brightness of each point; In the embodiment of the present invention, the Gamma curve of employing standard 2.2, does the Gamma curve of standard 2.2 by choosing 10 points.10 points that interval steps is 10IRE as chosen from luminance signals level 0-100IRE.According to Gamma principle, the normalization coefficient of corresponding 10 points of standard 2.2Gamma can pass through formula: (L/100) ^2.2 show that it is respectively: 0.00631; 0.02899; 0.0704; 0.13321; 0.21764; 0.32504; 0.45626; 0.61207; 0.79331; 1.Concrete, wait that in theory adjusting the brightness value of screen each point under Lreal_1 brightness is (Lreal_1* ((L/100) ^2.2)).
Step S58, control signal generator is exported the complete white field signal of corresponding luminance signals level to waiting to adjust screen; Can according to the luminance signals level of above-mentioned 10 some correspondences, send the complete white field signal instruction of corresponding luminance signals level to signal generator by PC, signal generator is exported corresponding complete white field signal according to this instruction and is shielded to waiting to adjust.
Step S59, regulates white balance gains RGB-gain, makes to get to wait to adjust the brightness value of screen to equal brightness value corresponding to above-mentioned Gamma curve; Can by PC to above-mentioned wait to adjust screen automatically to regulate the RGB-gain of Gamma in the theoretical brightness value (Lreal_1* ((L/100) ^2.2)) of Lreal_1 and the result of intrinsic brilliance value comparison (RGB-gain changes simultaneously, keeping Gamma curve is the curve that a RGB tri-rifles overlap) value, make to measure and wait to adjust the brightness of screen just in time to equal the brightness value that standard 2.2Gamma is corresponding (Lreal_1* ((L/100) ^2.2)) by colour temperature instrument.
Step S510, draws a Gamma curve according to linear interpolation between the RGB-gain value of above-mentioned some points.By linear interpolation between the RGB-gain value of above-mentioned 10 points, draw the Gamma curve of 2.2.
The present invention also provides a kind of image quality regulating system of joining fast screen, for realizing said method.With reference to Fig. 7, Fig. 7 is the structural representation that the present invention joins image quality regulating system one embodiment of screen fast.This image quality regulating system of joining fast screen comprises colour temperature instrument 10, signal generator 20 and data processing equipment 30.Data processing equipment 30 can be aforesaid PC, and it is connected with TV by debugging acid, and PC is connected with colour temperature instrument 10, and PC 10 is connected with signal generator 20, and signal generator 20 is connected with TV.PC end is installed the driver of colour temperature instrument and signal source, can directly pass through PC control instrument.
With reference to Fig. 8, in the embodiment of the present invention, data processing equipment 30 can comprise:
Basis screen brightness processed module 31, the brightness value L max of basis screen when controlling the complete white field signal of colour temperature instrument measuring machine core inner output to basis screen, and the brightness value L real of the complete white field signal of signal generator output basis screen during to basis screen; For example, can shield brightness processed module 31 by basis and send complete white test pictures instruction to TV set core, TV set core is exported whole audience white signal to basis screen according to this complete white test pictures instruction, adopt colour temperature instrument 10 to catch the monochrome information at basic screen center, now, the brightness value at basic screen center is for shielding maximum brightness value L max in this basis.Also can shield brightness processed module 31 by basis and send complete white field signal instruction to signal generator, signal generator 20 sends whole audience white signal to basis screen according to this complete white field signal instruction, adopt colour temperature instrument 10 to catch the monochrome information at basic screen center, now, the brightness value at basic screen center is the actual maximum brightness value L real of this basis screen.
Computing module 32, for calculating according to Lmax and Lreal the brightness decay factor K that shield on basis; For example computing module 32 can carry out computing by the formula of K=Lreal/Lmax, obtains brightness decay factor K value.
Gamma parameter processing module 33, for determining the Gamma parameter of basis screen; For example, Gamma parameter processing module 33 can be consistent the Gamma parameter in debug process and common Gamma parameter series model, according to standard 2.2gamma, carries out follow-up flow process.Television set is joined screen personnel can be by Gamma parameter processing module 33 directly by input Gamma parameter in PC.
Color treatments module 34, for obtaining the color parameter of basis screen; For example can export respectively and join screen relevant colors to basis screen by color treatments module 34 control signal generators 20, by colour temperature instrument 10, catch corresponding brightness and the chromaticity coordinates information of relevant colors, and this information is sent to PC, by PC, analyze brightness corresponding to relevant colors and chromaticity coordinates.Concrete, this color can at least comprise redness (R), green (G) and blue (B).By the signal command of PC output red to signal generator 20, signal generator 20 shields according to this danger signal order output red signal to basis, PC obtains brightness and the chromaticity coordinates of this redness point by colour temperature instrument 10, get after the same method green and blue brightness and chromaticity coordinates.Further, the above-mentioned screen relevant colors of joining can also comprise cyan (C), purple (M), yellow (Y), the colour of skin (F).Adopt above-mentioned 7 kinds of colors, can improve the accuracy of color, make to wait to adjust screen more identical with the image quality effect of basis screen.
Wait to adjust screen image quality adjustment module 35, for regulating according to the color parameter of described brightness decay factor K, Gamma parameter and basis screen the image quality of waiting to adjust screen.Concrete, wait to adjust the processing of screen image quality adjustment module 35 to comprise: according to decay factor K, regulate and wait to adjust the luminance contrast curve of screen, according to Gamma parameter with wait to adjust the brightness value of screen to regulate and wait to adjust the Gamma curve of screen and regulate according to the color parameter of basis screen the color of waiting to adjust screen.
The present invention regulates by calculating the decay factor K of basis screen the luminance contrast curve of waiting to adjust screen, obtains the Gamma parameter of basis screen and join the parameter value that shield relevant colors to regulate respectively and wait to adjust Gamma curve and the color of shielding.Realize the automatic adjusting of image quality, can improve and wait to adjust the high image quality effect of screen and the goodness of fit of basis screen, reduced joining the screen cycle of television set, shortened the research and development time of television set.
Preferably, above-mentioned basis screen brightness processed module 31 is further used for control signal generator 20 and exports respectively selected multiple signal of joining screen color to basis screen; For example, basis screen brightness processed module 31 control signal generators 20 are joined screen color signal by 7 kinds of selected redness (R), green (G) and blue (B), cyan (C), purple (M), yellow (Y), the colours of skin (F) and by HDMI (High Definition Multimedia Interface, HDMI (High Definition Multimedia Interface)), are exported respectively basis to and shield.
Color treatments module 34 is further by corresponding brightness value and the chromaticity coordinates value of each color of colour temperature instrument retaking of a year or grade.Color treatments module 34 is by controlling read back the respectively x of 7 kinds of colors of colour temperature instrument 10, and y coordinate figure and brightness value, as the color references of waiting to adjust screen.
Corresponding, wait to adjust screen image quality adjustment module 35 to be further used for:
Control signal generator 20 is exported respectively and is joined screen color signal to waiting to adjust screen; For example, waiting to adjust screen image quality adjustment module 35 can control signal generator 20 sends respectively redness (R), green (G) and blue (B), cyan (C), purple (M), yellow (Y), the colour of skin (F) and amounts to 7 kinds of looks and shield to waiting to adjust.
Regulate tone, brightness or colourity register parameters to make to wait to adjust the brightness of the corresponding color of screen consistent with basis screen with chromaticity coordinates.For example, wait to adjust the IHC (tone) of screen image quality adjustment module 35 capable of regulating television set chip inside, IBC (brightness), the brightness that ICC (colourity) register parameters reaches every kind of color is consistent by foundation machine with chromaticity coordinates, guaranteed that like this two machine colour gamuts overlap substantially, color performance is consistent.As shown in Figure 4, the G ' (green) that for example waits to adjust screen has been offset with respect to the G (green) of basis screen, two color coordinatess are not corresponding, now can G ' (green) be corrected by adjusting IHC (tone), reach expressive force consistency.
In the embodiment of the present invention, wait to adjust screen image quality adjustment module 35 to be further used for:
The complete white field signal of measuring machine core inner output is to wait to adjust the brightness value L max_1 of screen when adjusting screen; Export complete white field signal to treat the brightness value L real_1 of tune screen when adjusting screen with signal generator;
Regulate contrast level parameter to make Lreal_1=Lmax_1*K;
Obtain when adjusting screen at full black burst screen center brightness value Lreal_2;
According to described Lreal_2 and the contrast level parameter when the Lreal_1=Lmax_1*K, by linear interpolation, draw and wait the luminance contrast curve of adjusting screen corresponding.
In the embodiment of the present invention, also can be by waiting that adjusting screen image quality adjustment module 35 to control colour temperature instrument 10 obtains Lmax_1 and Lreal_1 by the flow process of obtaining Lmax and Lreal; According to the decay factor K of basis screen, calculating is when the maximum wait adjusting screen is Lmax_1, the actual maximum brightness value Lmax_1*K (K=Lreal/Lmax) that should reach in theory and actual maximum brightness value Lreal_1 compare, PC, by regulating contrast rating, makes the actual maximum Lmax_1*K that should reach in theory equal actual maximum Lreal_1; Control signal generator 20 sends full black burst, and the brightness by brightness adjusting register Shi Daitiaoping center no longer changes, and obtains by colour temperature instrument 10 brightness value that this waits to adjust screen; And adopt the method for linear interpolation to obtain luminance contrast curve according to above-mentioned contrast rating and brightness value.
In the embodiment of the present invention, wait to adjust screen image quality adjustment module 35 also can be further used for:
According to luminance signals level, Gamma curve corresponding to described Gamma parameter is divided into some points, calculates the theoretical brightness value of each point under Lreal_1 brightness;
The complete white field signal of the corresponding luminance signals level of control signal generator 20 output is to waiting to adjust screen;
Regulate white balance gains RGB-gain, make to get and wait to adjust the brightness value of screen to equal brightness value corresponding to described Gamma curve;
According to the linear interpolation between the RGB-gain value of described some points, obtain described Gamma curve.
Concrete, treat tune screen image quality adjustment module 35 according to Gamma parameter and wait to adjust the brightness value of screen to regulate the processing mode of the Gamma curve for the treatment of tune screen with reference to aforementioned embodiment illustrated in fig. 6, at this, not to be described further.
These are only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. an image quality control method of joining fast screen, is characterized in that, comprises the following steps:
The brightness value L max of the complete white field signal of measuring machine core inner output basis screen during to basis screen, and the brightness value L real of the complete white field signal of signal generator output basis screen during to basis screen;
According to Lmax and Lreal, calculate the brightness decay factor K that shield on basis;
Determine the Gamma parameter of basis screen;
Obtain the color parameter of basis screen;
According to the color parameter of described brightness decay factor K, Gamma parameter and basis screen, regulate the image quality of waiting to adjust screen;
Wherein, the described color parameter according to brightness decay factor K, Gamma parameter and basis screen regulates and waits to adjust the image quality of screen to comprise:
According to brightness decay factor K, regulate the luminance contrast curve of waiting to adjust screen;
According to Gamma parameter, adjust the brightness value of screen to regulate the Gamma curve of waiting to adjust screen with waiting;
According to the color parameter of basis screen, regulate the color of waiting to adjust screen;
The described color parameter that obtains basis screen specifically comprises:
Control signal generator exports respectively selected multiple signal of joining screen color to basis screen;
By each color of colour temperature instrument retaking of a year or grade corresponding brightness value and chromaticity coordinates value.
2. the method for claim 1, is characterized in that, the described color parameter according to basis screen regulates waits to adjust the color of screen specifically to comprise:
Control signal generator is exported respectively and is joined screen color signal to waiting to adjust screen;
Regulate tone, brightness or colourity register parameters to make to wait to adjust the brightness of the corresponding color of screen consistent with basis screen with chromaticity coordinates.
3. method as claimed in claim 2, is characterized in that, describedly according to brightness decay factor K, regulates and waits to adjust the luminance contrast curve of screen specifically to comprise:
The complete white field signal of measuring machine core inner output is to wait to adjust the brightness value L max_1 of screen when adjusting screen; Export complete white field signal to treat the brightness value L real_1 of tune screen when adjusting screen with signal generator;
Regulate contrast level parameter to make Lreal_1=Lmax_1*K;
Obtain when adjusting screen at full black burst screen center brightness value Lreal_2;
According to described Lreal_2 and the contrast level parameter when the Lreal_1=Lmax_1*K, by linear interpolation, draw and wait the luminance contrast curve of adjusting screen corresponding.
4. method as claimed in claim 3, is characterized in that, described according to Gamma parameter with wait to adjust the brightness value of screen to regulate and wait to adjust the Gamma curve of screen specifically to comprise:
According to luminance signals level, Gamma curve corresponding to described Gamma parameter is divided into some points, calculates the theoretical brightness value of each point under Lreal_1 brightness;
Control signal generator is exported the complete white field signal of corresponding luminance signals level to waiting to adjust screen;
Regulate white balance gains RGB-gain, make to get and wait to adjust the brightness value of screen to equal brightness value corresponding to described Gamma curve;
According to the linear interpolation between the RGB-gain value of described some points, obtain described Gamma curve.
5. an image quality regulating system of joining fast screen, is characterized in that, comprises colour temperature instrument, signal generator and data processing equipment, and wherein, described data processing equipment comprises:
Basis screen brightness processed module, the brightness value L max of basis screen when controlling the complete white field signal of colour temperature instrument measuring machine core inner output to basis screen, and the brightness value L real of the complete white field signal of signal generator output basis screen during to basis screen;
Computing module, for calculating according to Lmax and Lreal the brightness decay factor K that shield on basis;
Gamma parameter processing module, for determining the Gamma parameter of basis screen;
Color treatments module, for obtaining the color parameter of basis screen;
Wait to adjust screen image quality adjustment module, for regulating according to the color parameter of described brightness decay factor K, Gamma parameter and basis screen the image quality of waiting to adjust screen;
Wherein, described in, wait to adjust screen image quality adjustment module specifically for:
According to brightness decay factor K, regulate the luminance contrast curve of waiting to adjust screen;
According to Gamma parameter, adjust the brightness value of screen to regulate the Gamma curve of waiting to adjust screen with waiting;
According to the color parameter of basis screen, regulate the color of waiting to adjust screen;
Described basis screen brightness processed module is further used for control signal generator and exports respectively selected multiple signal of joining screen color to basis screen;
Described color treatments module is further by corresponding brightness value and the chromaticity coordinates value of each color of colour temperature instrument retaking of a year or grade.
6. system as claimed in claim 5, is characterized in that, described in wait to adjust screen image quality adjustment module to be further used for:
Control signal generator is exported respectively and is joined screen color signal to waiting to adjust screen;
Regulate tone, brightness or colourity register parameters to make to wait to adjust the brightness of the corresponding color of screen consistent with basis screen with chromaticity coordinates.
7. system as claimed in claim 6, is characterized in that, described in wait to adjust screen image quality adjustment module to be further used for:
The complete white field signal of measuring machine core inner output is to wait to adjust the brightness value L max_1 of screen when adjusting screen; Export complete white field signal to treat the brightness value L real_1 of tune screen when adjusting screen with signal generator;
Regulate contrast level parameter to make Lreal_1=Lmax_1*K;
Obtain when adjusting screen at full black burst screen center brightness value Lreal_2;
According to described Lreal_2 and the contrast level parameter when the Lreal_1=Lmax_1*K, by linear interpolation, draw and wait the luminance contrast curve of adjusting screen corresponding.
8. system as claimed in claim 7, is characterized in that, described in wait to adjust screen image quality adjustment module to be further used for:
According to luminance signals level, Gamma curve corresponding to described Gamma parameter is divided into some points, calculates the theoretical brightness value of each point under Lreal_1 brightness;
Control signal generator is exported the complete white field signal of corresponding luminance signals level to waiting to adjust screen;
Regulate white balance gains RGB-gain, make to get and wait to adjust the brightness value of screen to equal brightness value corresponding to described Gamma curve;
According to the linear interpolation between the RGB-gain value of described some points, obtain described Gamma curve.
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| CN102982786B (en) * | 2012-12-18 | 2015-06-24 | 广东威创视讯科技股份有限公司 | Method and device for color consistency adjustment of multiple display screens |
| CN103680449B (en) * | 2013-12-17 | 2017-02-22 | Tcl集团股份有限公司 | Method and device for removing liquid crystal displayer mura |
| CN104766574B (en) * | 2015-03-24 | 2019-02-12 | 小米科技有限责任公司 | Color temperature adjusting method and device |
| CN105259687B (en) * | 2015-10-20 | 2018-09-18 | 深圳创维－Rgb电子有限公司 | A kind of the picture uniformity adjusting method and system of liquid crystal display |
| CN108376529B (en) * | 2018-03-22 | 2022-05-17 | 京东方科技集团股份有限公司 | Data debugging method, device and system |
| CN110070841B (en) * | 2019-03-26 | 2020-11-27 | 深圳市嘉利达专显科技有限公司 | Display screen adjusting method and device and electronic equipment |
| CN113542711B (en) * | 2020-04-14 | 2024-08-27 | 青岛海信移动通信技术有限公司 | Image display method and terminal |
| CN112565728B (en) * | 2020-12-22 | 2022-10-11 | 京东方科技集团股份有限公司 | White balance adjusting method, system and device |
| CN114664273A (en) * | 2020-12-23 | 2022-06-24 | 深圳Tcl数字技术有限公司 | Color temperature adjusting method and device, terminal equipment and storage medium |
| CN115550629A (en) * | 2021-06-29 | 2022-12-30 | 广州视琨电子科技有限公司 | Image quality adjusting method and device, storage medium and electronic equipment |
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| CN101668225A (en) * | 2009-09-25 | 2010-03-10 | 深圳创维－Rgb电子有限公司 | Method for adjusting gamma curve to improve image of flat television |
| CN101860765A (en) * | 2009-04-13 | 2010-10-13 | 鸿富锦精密工业（深圳）有限公司 | White balance adjustment method |
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| CN101860765A (en) * | 2009-04-13 | 2010-10-13 | 鸿富锦精密工业（深圳）有限公司 | White balance adjustment method |
| CN101668225A (en) * | 2009-09-25 | 2010-03-10 | 深圳创维－Rgb电子有限公司 | Method for adjusting gamma curve to improve image of flat television |
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