CN105141934B - The method and device of modulus signal compensation - Google Patents
The method and device of modulus signal compensation Download PDFInfo
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- CN105141934B CN105141934B CN201510623623.9A CN201510623623A CN105141934B CN 105141934 B CN105141934 B CN 105141934B CN 201510623623 A CN201510623623 A CN 201510623623A CN 105141934 B CN105141934 B CN 105141934B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
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Abstract
The invention discloses a kind of method and apparatus of modulus signal compensation, this method includes：After the signal source of terminal-pair first carries out blank level adjustment, the white balance parameter of the signal source of terminal first is obtained；Judge whether the green primary yield value in white balance parameter is less than the corresponding first threshold of the first signal source；When green primary yield value is less than first threshold, green primary yield value is increased into first threshold and obtains the first red primary yield value, and the red primary yield value of white balance parameter and blue primary yield value the first numerical value of increase are obtained into the first red primary yield value and the first blue primary yield value again, first numerical value is first threshold and the ratio of green primary yield value；First green primary yield value, the first red primary yield value and the first blue primary yield value are set to the white balance parameter in terminal secondary signal source.The present invention does not need factory to carry out the low blank level adjustment process of time-consuming, efficiency to all signal sources of terminal, also ensure that terminal can pass through energy consumption testing.
Description
Technical field
The present invention relates to the method and device in image display technology field, more particularly to a kind of compensation of modulus signal.
Background technology
White balance is produced as electron image reproducing colors are true, and color can be solved also by white balance adjusting
A series of problems that former and tone is handled.Due to different terminals, particularly television terminal, display screen between there is hardware and soft
Difference in terms of part, is easy to produce colour cast, influence is eventually if all television terminals all use identical white balance parameter
The display image quality at end.Therefore, in the production process of television terminal, factory generally requires the white balance to each television terminal
Parameter is adjusted, with the purpose for reaching more preferable reduction color, lifting image quality.
In the production process of television terminal, there is two ways to the white balance parameter adjustment of television terminal：One kind is pair
The white balance parameter of all signal sources of television terminal is adjusted one by one, but this mode expends the time very much, white balance ginseng
Number regulated efficiency is low；Another is only to adjust data signal (such as HDMI signals (High Definition Multimedia
Interface, HDMI)) or the white balance parameter of analog signal is only adjusted, then remaining information source is whole
Using with data signal or analog signal identical white balance parameter, still, according to brightness-formula (for example, under analog signal：Y1
=0.3R+0.6G+0.1B；Under data signal：Y2=0.21R+0.72G+0.07B, wherein Y1 are the brightness under analog signal, Y2
For the brightness under data signal, R is red primary yield value, and G is green primary yield value, and B is blue primary yield value) definition, equally
White balance parameter, the brightness of obtained analog signal and data signal is discrepant, may result in analog signal or number
Word image formation is partially dark, causes television terminal can not be by energy consumption testing.
The content of the invention
It is a primary object of the present invention to provide a kind of method and device of modulus signal compensation, it is intended to solve adjustment TV
Terminal white balance parameter expends time length, efficiency is low, the technical problem that causes television terminal to test.
To achieve the above object, a kind of method for modulus signal compensation that the present invention is provided, the modulus signal compensation
Method includes：
After the signal source of terminal-pair first carries out blank level adjustment, the white balance parameter of the signal source of terminal first is obtained,
Wherein described white balance parameter includes green primary yield value, red primary yield value and blue primary yield value；
Judge whether the green primary yield value in the white balance parameter is less than corresponding first threshold of first signal source
Value；
When the green primary yield value is less than the first threshold, the green primary yield value is increased to described first
Threshold value, and the red primary yield value of the white balance parameter and blue primary yield value are increased into the first numerical value times, first numerical value
It is again the first threshold and the ratio of the green primary yield value；
The terminal is set to according to the green primary yield value, red primary yield value and the blue primary yield value after increase
The white balance parameter in secondary signal source.
Preferably, it regard the green primary yield value after increase as the red primary gain after the first green primary yield value, increase
It is worth as the blue primary yield value after the first red primary yield value, increase as the first blue primary yield value, it is described according to increase
The green primary yield value, red primary yield value and blue primary yield value afterwards sets the white balance in the terminal secondary signal source
The step of parameter, includes：
Judge whether the first red primary yield value is less than the corresponding Second Threshold of first signal source；
When the first red primary yield value is less than the Second Threshold, the first red primary yield value is increased to
The Second Threshold, wherein the first red primary yield value after increase is used as the second red primary yield value；
By the first blue primary yield value increase second value times, the second value is the Second Threshold and described the
The ratio of one red primary yield value, wherein the first blue primary yield value after increase is used as the second blue primary yield value；
According to the first green primary yield value, the second red primary yield value and the second blue primary yield value
The white balance parameter in the terminal secondary signal source is set.
Preferably, it is described according to the first green primary yield value, the second red primary yield value and described second
The step of blue primary yield value sets the white balance parameter in the terminal secondary signal source includes：
Judge whether the second red primary yield value is more than the corresponding red gain extreme value of first signal source；
When the second red primary yield value red gain extreme value corresponding more than first signal source, by described second
Red primary yield value is decreased to the red gain extreme value and obtains the 3rd red primary yield value；
The first green primary yield value, the 3rd red primary yield value and the second blue primary yield value are set
It is set to the white balance parameter in the terminal secondary signal source.
Preferably, it is described to judge whether the second red primary yield value is more than the corresponding red gain of first signal source
Also include after the step of extreme value：
When the second red primary yield value red gain extreme value corresponding less than or equal to first signal source, by institute
State the first green primary yield value, the second red primary yield value and the second blue primary yield value and be set to the terminal
The white balance parameter in secondary signal source.
Preferably, the method for the modulus signal compensation also includes：
The green primary yield value, red for the white balance parameter for being set to the terminal secondary signal source is detected according to colorimeter system
Whether the image that primary colours yield value and blue primary yield value are formed occurs colour cast；
If be set to the green primary yield value of the white balance parameter in the terminal secondary signal source, red primary yield value and
Colour cast occurs for the image that blue primary yield value is formed, then adjusts the first threshold, Second Threshold and/or red gain extreme value,
To adjust the green primary yield value, red primary yield value and blue base of the white balance parameter for being set to the terminal secondary signal source
Color yield value.
To achieve the above object, the present invention also provides a kind of device of modulus signal compensation, the modulus signal compensation
Device includes：
Parameter acquisition module, for after the signal source of terminal-pair first carries out blank level adjustment, obtaining the terminal first and believing
The white balance parameter in number source, wherein the white balance parameter includes green primary yield value, red primary yield value and blue primary gain
Value；
Judge module, for judging whether the green primary yield value in the white balance parameter is less than first signal source
Corresponding first threshold；
Increase module, for when the green primary yield value is less than the first threshold, by the green primary yield value
The first threshold is increased to, and the red primary yield value of the white balance parameter and blue primary yield value are increased into the first numerical value
Times, first numerical value is again the first threshold and the ratio of the green primary yield value；
Parameter setting module, for being increased according to the green primary yield value after increase, red primary yield value and blue primary
Benefit value sets the white balance parameter in the terminal secondary signal source.
Preferably, it regard the green primary yield value after increase as the red primary gain after the first green primary yield value, increase
It is worth and is used as the first blue primary yield value, the parameter setting as the blue primary yield value after the first red primary yield value, increase
Module includes：
Yield value judging unit, for judging whether the first red primary yield value is less than first signal source correspondence
Second Threshold；
First gain increasing unit, for when the first red primary yield value is less than the Second Threshold, by described in
First red primary yield value increases to the Second Threshold, wherein the first red primary yield value after increase is red as second
Primary colours yield value；
Second gain increasing unit, for the first blue primary yield value to be increased into second value times, the second value
For the ratio of the Second Threshold and the first red primary yield value, wherein the first blue primary yield value after increase is made
For the second blue primary yield value；
Parameter set unit, for according to the first green primary yield value, the second red primary yield value and institute
State the white balance parameter that the second blue primary yield value sets the terminal secondary signal source.
Preferably, the parameter set unit includes：
Ratio in judgement unit, for judging it is corresponding whether the second red primary yield value is more than first signal source
Red gain extreme value；
First level setting unit, for when the second red primary yield value be more than first signal source it is corresponding red
During gain extreme value, the second red primary yield value is decreased to the red gain extreme value and the 3rd red primary yield value is obtained,
And the first green primary yield value, the 3rd red primary yield value and the second blue primary yield value are set to institute
State the white balance parameter in terminal secondary signal source.
Preferably, the parameter set unit also includes：
Second subprime setting unit, for being less than or equal to first signal source pair when the second red primary yield value
During the red gain extreme value answered, by the first green primary yield value, the second red primary yield value and the second blue base
Color yield value is set to the white balance parameter in the terminal secondary signal source.
Preferably, the device of the modulus signal compensation also includes：
Color cast detection module, the white balance parameter in the terminal secondary signal source is set to for being detected according to colorimeter system
The image that is formed of green primary yield value, red primary yield value and blue primary yield value whether occur colour cast；If being set to
Green primary yield value, red primary yield value and the blue primary yield value institute shape of the white balance parameter in the terminal secondary signal source
Into image occur colour cast, then adjust the first threshold, Second Threshold and/or red gain extreme value, with adjust be set to it is described
Green primary yield value, red primary yield value and the blue primary yield value of the white balance parameter in terminal secondary signal source.
The present invention is by after the signal source of terminal-pair first carries out blank level adjustment, obtaining the white of the signal source of terminal first
Balance parameters, then enter the first threshold corresponding with first signal source of the green primary yield value in the white balance parameter of acquisition
Row compares, if the green primary yield value is less than first threshold, the green primary yield value is increased into first threshold, and will obtain
White balance parameter in red primary yield value and blue primary yield value increase with green primary yield value increase multiple identical multiple,
, finally will adjustment so as to when the white balance parameter for detecting the first signal source is unreasonable, be adjusted to the white balance parameter
White balance parameter afterwards as secondary signal source white balance parameter so that ensure secondary signal source output image brightness before
Put, the adjustment to secondary signal source white balance parameter is realized automatically, terminal secondary signal source is carried out without factory
The low blank level adjustment process of time-consuming, efficiency, also ensure that terminal display brightness will not it is less than normal, can pass through energy consumption survey
Examination.
Brief description of the drawings
Fig. 1 is the schematic flow sheet for the method first embodiment that modulus signal of the present invention is compensated；
According to the green primary yield value after increase, red primary yield value in the method that Fig. 2 compensates for modulus signal of the present invention
The refinement schematic flow sheet of the white balance parameter in terminal secondary signal source is set with blue primary yield value；
Fig. 3 is the high-level schematic functional block diagram for the device first embodiment that modulus signal of the present invention is compensated；
Fig. 4 is the refinement high-level schematic functional block diagram for the device parameter setup module that modulus signal of the present invention is compensated.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of method of modulus signal compensation, and the first of the method compensated in modulus signal of the present invention implements
In example, reference picture 1, the method for modulus signal compensation includes：
Step S10, after the signal source of terminal-pair first carries out blank level adjustment, obtains the white flat of the signal source of terminal first
Weigh parameter, and wherein white balance parameter includes green primary yield value, red primary yield value and blue primary yield value；
In the present embodiment, terminal is intelligent television, and the first signal source is derived digital signal, and secondary signal source is believed for simulation
Number source, after the technical staff of factory completes the blank level adjustment to the derived digital signal of television terminal, obtains data signal
The white balance parameter in source, the white balance parameter of the derived digital signal includes the yield value of three primary colours, i.e., the white balance parameter includes
Green primary yield value, red primary yield value and blue primary yield value.
In addition, terminal is alternatively other types of terminal, the other embodiments of the method compensated in modulus signal of the present invention
In, the first signal source can be simulation signal generator, and secondary signal source can be derived digital signal, first to the simulation signal generator of terminal
Blank level adjustment is carried out, the white balance parameter of the simulation signal generator is then obtained, with the white balance parameter according to the analog signal
The corresponding white balance parameter of derived digital signal is obtained, implementation procedure is essentially identical with the present embodiment.
Step S20, judges whether the green primary yield value in white balance parameter is less than corresponding first threshold of the first signal source
Value；
Based on brightness-formula (for example, under analog signal：Y1=0.3R+0.6G+0.1B；Under data signal：Y2=0.21R+
0.72G+0.07B, wherein Y1 are the brightness under analog signal, and Y2 is the brightness under data signal, and R is red primary yield value, and G is
Green primary yield value, B is blue primary yield value), green primary yield value is maximum to the brightness contribution of data signal, red primary gain
Value contribution is taken second place, and the contribution of blue primary yield value is minimum, therefore first judges the white balance parameter that obtains (the first signal source is (in this implementation
Example in the first signal source be derived digital signal) white balance parameter) in green primary yield value whether be less than the first signal source pair
The first threshold (first threshold can be that user is set or terminal is set automatically) answered, if the green primary of the first signal source increases
Benefit value is less than first threshold, shows that green primary gain is too small, secondary signal source can based on the brightness obtained by the green primary gain
Energy can be less than normal, therefore needs to carry out increase processing to the green primary gain；If the green primary gain of the first signal source is more than or equal to the
One threshold value, shows that green primary gain is sufficiently large, and secondary signal source will not be less than normal based on the brightness obtained by the green primary gain, therefore
Increase processing is carried out to the green primary gain without needs.
In order to be better understood from this programme, the determination to first threshold is explained, and the first threshold in the present invention is base
Obtained in brightness-formula, the first threshold of derived digital signal is obtained based on the brightness-formula under data signal, simulation signal generator
First threshold based under analog signal brightness-formula (brightness-formula be based on terminal display screen characteristic and all kinds of chip technologies
Parameter simultaneously passes through test of many times or tests what is obtained) obtain, such as brightness-formula is Y3=0.2126R+ under data signal
(Y3 is the brightness under data signal to 0.7152G+0.0722B, and R is red primary yield value, and G is green primary yield value, and B is blue base
Color yield value), the corresponding first threshold of brightness-formula of the data signal is more than or equal to 128 for 128, i.e. green primary yield value
When, the white balance parameter comprising the green primary yield value can basic guarantee brightness will not be less than normal.
Step S30, when green primary yield value is less than first threshold, first threshold is increased to by green primary yield value, and
The red primary yield value of white balance parameter and blue primary yield value are increased into the first numerical value times, first numerical value is first threshold again
With the ratio of green primary yield value；
Step S40, terminal the is set according to the green primary yield value after increase, red primary yield value and blue primary yield value
The white balance parameter in binary signal source.
Green primary yield value is less than corresponding first threshold of the first signal source in the white balance parameter for judging the first signal source
During value, show that the white balance parameter of the first signal source is applied to secondary signal source and may result in the image that secondary signal source is shown
Brightness is relatively low, therefore green primary yield value in the white balance parameter of first signal source is increased into first threshold, while will put down in vain
The red primary yield value and blue primary yield value for the parameter that weighs increase the first numerical value times, and first numerical value is again first threshold and green base
The ratio of color yield value.Such as in the white balance parameter of the first signal source red primary yield value R1=2, green primary yield value G1=
4, blue primary yield value B1=1, the corresponding first threshold of the first signal source are 8, then G1 is adjusted to 8, and the first numerical value is adjusted for 2, R1
Whole is that 4, B1 is adjusted to 2, that is, red primary yield value R2=4, the green primary yield value G2=8 after increase, after increase after increasing
Blue primary yield value B2=2, then using R2, G2, B2 as secondary signal source white balance parameter.Judging the first signal source
White balance parameter in green primary yield value when being more than or equal to the corresponding first threshold of the first signal source, show the first signal source
It is relatively low that white balance parameter is applied to the brightness of image that secondary signal source will not cause secondary signal source to show, therefore can be directly by first
The white balance parameter of signal source as secondary signal source white balance parameter.
In the present embodiment, by after the signal source of terminal-pair first carries out blank level adjustment, obtaining the terminal first and believing
The white balance parameter in number source, then by the green primary yield value in the white balance parameter of acquisition corresponding with first signal source
One threshold value is compared, if the green primary yield value is less than first threshold, the green primary yield value is increased into first threshold,
And red primary yield value in the white balance parameter of acquisition and the increase of blue primary yield value are increased into multiple phase with green primary yield value
Same multiple, so as to when the white balance parameter for detecting the first signal source is unreasonable, be adjusted to the white balance parameter, most
Afterwards using the white balance parameter after adjustment as secondary signal source white balance parameter, so as to ensure secondary signal source output image
On the premise of brightness, the adjustment to secondary signal source white balance parameter is realized automatically, and terminal second is believed without factory
Number source carries out the low blank level adjustment process of time-consuming, efficiency, also ensure that terminal display brightness will not it is less than normal, can pass through
Energy consumption testing.
Further, on the basis of the first embodiment for the method that modulus signal of the present invention is compensated, modulus signal is proposed
The second embodiment of the method for compensation, reference picture 2 in a second embodiment, regard the green primary yield value after increase as first
Red primary yield value after green primary yield value, increase is made as the blue primary yield value after the first red primary yield value, increase
For the first blue primary yield value, step S40 includes：
Step S41, judges whether the first red primary yield value is less than the corresponding Second Threshold of the first signal source；
Step S42, when the first red primary yield value is less than Second Threshold, second is increased to by the first red primary yield value
Threshold value, wherein the first red primary yield value after increase is used as the second red primary yield value；
Step S43, second value times is increased by the first blue primary yield value, and the second value is that Second Threshold and first are red
The ratio of primary colours yield value, wherein the first blue primary yield value after increase is used as the second blue primary yield value；
Step S44, is set according to the first green primary yield value, the second red primary yield value and the second blue primary yield value
The white balance parameter in terminal secondary signal source.
When green primary yield value is less than first threshold in the white balance parameter for judging the first signal source, to green primary gain
Increase to the corresponding first threshold of the first signal source and obtain the first green primary yield value, and increase corresponding red primary in proportion and increase
The first red primary yield value and the first blue primary yield value are obtained after beneficial value and blue primary yield value, then increases the first red primary
Benefit value Second Threshold (determination process of Second Threshold and first threshold are essentially identical) corresponding with the first signal source is compared,
When the first red gain value is less than Second Threshold, surface is by the first green primary yield value, the first red primary yield value and first
It is relatively low that blue primary yield value may result in the brightness of image that secondary signal source shows as secondary signal source, therefore red by first
Yield value increases to Second Threshold and obtains the second red gain value, while the first blue gain value increase second value is obtained again
Second blue gain value, the second value is the ratio of Second Threshold and the first red primary yield value, by the first green primary yield value,
Second red primary yield value and the second blue primary yield value are set to the white balance parameter in terminal secondary signal source.When first red
When color yield value is more than or equal to Second Threshold, show the blue base of the first green primary yield value, the first red primary yield value and first
It is relatively low that color yield value is applied to the brightness of image that secondary signal source will not cause secondary signal source to show, therefore can be directly green by first
Primary colours yield value, the first red primary yield value and the first blue primary yield value as secondary signal source white balance parameter.
Connect above-mentioned steps S40 example, the first red primary yield value R2=4, the first green primary yield value G2=8, first
Blue primary yield value B2=2, if Second Threshold is 6, adjusts constant to 6, G2 by R2, and B2 is adjusted to 3, i.e. the second red primary increases
Beneficial value R3=6, the second blue primary yield value B3=3, and using R3, G2, B3 as secondary signal source white balance parameter.
In the present embodiment, by determining whether whether the first red primary yield value of the first signal source is less than the second threshold
Value, if the first red primary yield value is less than Second Threshold, increases to Second Threshold by the first red primary yield value and obtains second
Red primary yield value, while the first blue primary yield value increase second value obtained into the second blue primary yield value again, and by the
One green primary yield value, the first red primary yield value and the first blue primary yield value as secondary signal source white balance parameter,
So as to when ensureing that green primary yield value is sufficiently large, be further ensured that red primary yield value is sufficiently large, green primary gain can be aided in
Value ensures the brightness in terminal secondary signal source, is further ensured that terminal passes through energy consumption testing.
Further, on the basis of the second embodiment for the method that modulus signal of the present invention is compensated, modulus signal is proposed
The 3rd embodiment of the method for compensation, in the third embodiment, step S44 include：
Step S441, judges whether the second red primary yield value is more than the corresponding red gain extreme value of the first signal source；
Step S442 is red by second when the second red primary yield value red gain extreme value corresponding more than the first signal source
Primary colours yield value is decreased to red gain extreme value and obtains the 3rd red primary yield value；
Step S443, the first green primary yield value, the 3rd red primary yield value and the second blue primary yield value are set
For the white balance parameter in terminal secondary signal source.
When the red primary yield value of the first signal source obtains the second red primary yield value after adjusting twice, judging should
Whether the second red primary yield value is more than the corresponding red gain extreme value of the first signal source, if the second red primary yield value is more than red increase
Beneficial extreme value, shows that the image shown by the white balance parameter comprising the second red primary yield value can be partially red, the second red primary is increased
Beneficial value is decreased to red gain extreme value and regard the second red primary yield value after reduction as the 3rd red primary yield value, the second indigo plant base
Color yield value is constant, then sets the first green primary yield value, the 3rd red primary yield value and the second blue primary yield value
For the white balance parameter in terminal secondary signal source.
In the present embodiment, once adjusted, to red primary yield value and blue primary gain to the progress of green primary yield value
Value is carried out after secondary adjustment, is further compared the red gain extreme value of the second red primary yield value obtained after adjusting twice
Compared with preventing that the second red primary yield value is excessive and cause the image shown by the white balance parameter comprising the second red primary yield value
It is partially red, it is ensured that the image chroma shown by white balance parameter that secondary signal source is obtained is moderate.
Further, on the basis of the 3rd embodiment for the method that modulus signal of the present invention is compensated, modulus signal is proposed
The fourth embodiment of the method for compensation, in the fourth embodiment, also includes after step S441：
Step S444, will when the second red primary yield value red gain extreme value corresponding less than or equal to the first signal source
First green primary yield value, the second red primary yield value and the second blue primary yield value are set to the white of terminal secondary signal source
Balance parameters.
When the red primary yield value of the first signal source obtains the second red primary yield value after adjusting twice, judging should
Whether the second red primary yield value is more than the corresponding red gain extreme value of the first signal source, if the second red primary yield value is less than or waited
In red gain extreme value, show that the image chroma shown by the white balance parameter comprising the second red primary yield value is moderate, without right
Second red primary yield value is adjusted, and then by the first green primary yield value, the second red primary yield value and the second blue base
Color yield value is set to the white balance parameter in terminal secondary signal source.
In the present embodiment, once adjusted, to red primary yield value and blue primary gain to the progress of green primary yield value
Value is carried out after secondary adjustment, is further compared the red gain extreme value of the second red primary yield value obtained after adjusting twice
Compared with preventing that the second red primary yield value is excessive and cause the image shown by the white balance parameter comprising the second red primary yield value
It is partially red, it is ensured that the image chroma shown by white balance parameter that secondary signal source is obtained is moderate.
Further, on the basis of the 3rd or fourth embodiment of the method that modulus signal of the present invention is compensated, modulus letter
Number compensation method also include：
Step S50, the green primary gain for the white balance parameter for being set to terminal secondary signal source is detected according to colorimeter system
Whether the image that value, red primary yield value and blue primary yield value are formed occurs colour cast；
In the present embodiment, step S50 can be arranged on after step S443 or step S444, and colorimeter system can be used
1931CIE-XYZ standard colorimetric systems (i.e. CIE-XYZ colorimeter systems), the first letter after being adjusted is obtained in secondary signal source
After the correspondence white balance parameter of number source, obtain green primary yield value in the white balance parameter after adjustment, red primary yield value and
Blue primary yield value, the green primary yield value (G) for then obtaining secondary signal source, red primary yield value (R) and blue primary
Yield value (B) turns, with the value be converted in CIE-XYZ colorimeter systems, to judge the green of acquisition from the value in CIE-RGB colorimeter systems
Whether the value in primary colours yield value (G), red primary yield value (R) and blue primary yield value (B) correspondence CIE-XYZ colorimeter systems
It is up to standard, i.e., based on CIE-XYZ colorimeter systems judge be set to terminal secondary signal source white balance parameter green primary yield value,
Whether the image that red primary yield value and blue primary yield value are formed occurs colour cast.
Step S60, if being set to the green primary yield value of the white balance parameter in terminal secondary signal source, red primary yield value
And colour cast occurs for the image that blue primary yield value is formed, then adjusts first threshold, Second Threshold and/or red gain extreme value,
Increased with the green primary yield value, red primary yield value and blue primary that adjust the white balance parameter for being set to terminal secondary signal source
Benefit value.
If being set to the green primary yield value of the white balance parameter in terminal secondary signal source, red primary yield value and blue base
Colour cast occurs for the image that color yield value is formed, then increases or reduce first threshold, three values of Second Threshold and red gain extreme value
One or more of, and one or many in increasing or reducing first threshold, three values of Second Threshold and red gain extreme value
After individual, the step in first, second, third or fourth embodiment of the method for re-executing modulus signal compensation of the present invention, with
Adjustment is set to green primary yield value, red primary yield value and the blue primary gain of the white balance parameter in terminal secondary signal source
Value, and detect that being currently set for the white of terminal secondary signal source puts down again according to colorimeter system (such as CIE-XYZ colorimeter systems)
Whether the image that green primary yield value, red primary yield value and the blue primary yield value of weighing apparatus parameter are formed occurs colour cast, if
Do not occur colour cast, then preserve green primary yield value, the red primary of the white balance parameter for being currently set for terminal secondary signal source
Yield value and blue primary yield value；If there is generation colour cast, continue to increase or reduce first threshold, Second Threshold and red gain
One or more of three values of extreme value, until green primary yield value, the red primary of the white balance parameter in current secondary signal source
Colour cast does not occur for the image that yield value and blue primary yield value are formed.
In addition, the tune of one or more of increase or reduction first threshold, three values of Second Threshold and red gain extreme value
During whole, sequencing, increase or the amplitude size of reduction of increase or reduction object can be set according to the actual requirements, example
First increase first threshold in this way, still first increase Second Threshold can be set with actual demand.
In the present embodiment, the green primary gain in the white balance parameter for being tentatively provided with terminal secondary signal source is passed through
After value, red primary yield value and blue primary yield value, the white of terminal secondary signal source is set to according to colorimeter system detection
Whether the image that green primary yield value, red primary yield value and the blue primary yield value of balance parameters are formed occurs colour cast,
If being set to the green primary yield value of the white balance parameter in terminal secondary signal source, red primary yield value and blue primary yield value
Colour cast occurs for the image formed, then adjusts first threshold, Second Threshold and/or red gain extreme value, and terminal is set to adjust
Green primary yield value, red primary yield value and the blue primary yield value of the white balance parameter in secondary signal source and avoid display inclined
The image of color, is combined using empirical value (such as first threshold, Second Threshold or red gain extreme value) and actual colorimetric detection
Scheme, it is to avoid the white balance ginseng for being not suitable with empirical value by the difference of terminal hardware and software and making secondary signal source based on acquired in
Colour cast occurs for number display image, can also be gone to adjust empirical value according to terminal hardware and software actual conditions, make to be set to second
The image that green primary yield value, red primary yield value and the blue primary yield value of the white balance parameter of signal source are formed is not sent out
Raw colour cast.
The present invention also provides a kind of device of modulus signal compensation, the first embodiment of the device compensated in modulus signal
In, reference picture 3, the device of modulus signal compensation includes：
Parameter acquisition module 10, for after the signal source of terminal-pair first carries out blank level adjustment, obtaining the terminal first
The white balance parameter of signal source, wherein white balance parameter include green primary yield value, red primary yield value and blue primary yield value；
In the present embodiment, terminal is intelligent television, and the first signal source is derived digital signal, and secondary signal source is believed for simulation
Number source, after the technical staff of factory completes the blank level adjustment to the derived digital signal of television terminal, parameter acquisition module
10 obtain the white balance parameter of derived digital signal, and the white balance parameter of the derived digital signal includes the yield value of three primary colours, i.e., should
White balance parameter includes green primary yield value, red primary yield value and blue primary yield value.
In addition, terminal is alternatively other types of terminal, the other embodiments of the method compensated in modulus signal of the present invention
In, the first signal source can be simulation signal generator, and secondary signal source can be derived digital signal, first to the simulation signal generator of terminal
Blank level adjustment is carried out, then parameter acquisition module 10 obtains the white balance parameter of the simulation signal generator, to believe according to the simulation
Number white balance parameter obtain the corresponding white balance parameter of derived digital signal, implementation procedure is essentially identical with the present embodiment.
Judge module 20, for judging it is corresponding whether the green primary yield value in white balance parameter is less than the first signal source
First threshold；
Based on brightness-formula (for example, under analog signal：Y1=0.3R+0.6G+0.1B；Under data signal：Y2=0.21R+
0.72G+0.07B, wherein Y1 are the brightness under analog signal, and Y2 is the brightness under data signal, and R is red primary yield value, and G is
Green primary yield value, B is blue primary yield value), green primary yield value is maximum to the brightness contribution of data signal, red primary gain
Value contribution is taken second place, and the contribution of blue primary yield value is minimum, therefore judge module 20 first judges white balance parameter (the first signal source obtained
The white balance parameter of (in the present embodiment the first signal source be derived digital signal)) in green primary yield value whether be less than first
The corresponding first threshold of signal source (first threshold can be that user is set or terminal is set automatically), if the first signal source
Green primary yield value is less than first threshold, shows that green primary gain is too small, and secondary signal source is based on obtained by the green primary gain
Brightness may be less than normal, therefore need increase 30 pairs of the module green primary gain to carry out increase processing；If the first signal source is green
Primary colours gain is more than or equal to first threshold, shows that green primary gain is sufficiently large, and secondary signal source is based on obtained by the green primary gain
The brightness arrived will not be less than normal, therefore carries out increase processing to the green primary gain without needs.
In order to be better understood from this programme, the determination to first threshold is explained, and the first threshold in the present invention is base
Obtained in brightness-formula, the first threshold of derived digital signal is obtained based on the brightness-formula under data signal, simulation signal generator
First threshold based under analog signal brightness-formula (brightness-formula be based on terminal display screen characteristic and all kinds of chip technologies
Parameter simultaneously passes through test of many times or tests what is obtained) obtain, such as brightness-formula is Y3=0.2126R+ under data signal
(Y3 is the brightness under data signal to 0.7152G+0.0722B, and R is red primary yield value, and G is green primary yield value, and B is blue base
Color yield value), the corresponding first threshold of brightness-formula of the data signal is more than or equal to 128 for 128, i.e. green primary yield value
When, the white balance parameter comprising the green primary yield value can basic guarantee brightness will not be less than normal.
Increase module 30, for when green primary yield value is less than first threshold, green primary yield value to be increased into first
Threshold value, and the red primary yield value of white balance parameter and blue primary yield value are increased into the first numerical value times, first numerical value is again
First threshold and the ratio of green primary yield value；
Parameter setting module 40, for according to the green primary yield value after increase, red primary yield value and blue primary gain
Value sets the white balance parameter in terminal secondary signal source.
Green primary yield value is less than the first signal source pair in the white balance parameter that judge module 20 judges the first signal source
During the first threshold answered, show that the white balance parameter of the first signal source is applied to secondary signal source and may result in secondary signal source
The brightness of image of display is relatively low, therefore increase module 30 increases to green primary yield value in the white balance parameter of first signal source
First threshold, while the red primary yield value of white balance parameter and blue primary yield value are increased into the first numerical value times, first number
Value times is first threshold and the ratio of green primary yield value.Such as in the white balance parameter of the first signal source red primary yield value R1
=2, green primary yield value G1=4, blue primary yield value B1=1, the corresponding first threshold of the first signal source are 8, then G1 is adjusted
For 8, the first numerical value is adjusted to 4, B1 for 2, R1 again and is adjusted to 2, that is, the red primary yield value R2=4 after increasing, green after increase
Primary colours yield value G2=8, the blue primary yield value B2=2 after increase, then regard R2, G2, B2 as the white flat of secondary signal source
Weigh parameter.Green primary yield value is more than or equal to the first signal in the white balance parameter in the first signal source of judgement of judge module 20
During the corresponding first threshold in source, show that the white balance parameter of the first signal source is applied to secondary signal source and will not cause secondary signal
The brightness of image that source is shown is relatively low, therefore parameter setting module 40 directly can regard the white balance parameter of the first signal source as the second letter
The white balance parameter in number source.
In the present embodiment, by the way that after the signal source of terminal-pair first carries out blank level adjustment, parameter acquisition module 10 is obtained
The white balance parameter of the signal source of terminal first is taken, then judge module 20 is by the green primary gain in the white balance parameter of acquisition
Value first threshold corresponding with first signal source is compared, if the green primary yield value is less than first threshold, increases mould
The green primary yield value is increased to first threshold by block 30, and by red primary yield value and blue primary in the white balance parameter of acquisition
Yield value increases increases multiple identical multiple with green primary yield value, so as to detect the white balance parameter of the first signal source
When unreasonable, the white balance parameter is adjusted, final parameter setup module 40 regard the white balance parameter after adjustment as
The white balance parameter in binary signal source, so as on the premise of secondary signal source output image brightness is ensured, realize automatically to the
The adjustment of binary signal source white balance parameter, the low white balance of time-consuming, efficiency is carried out to terminal secondary signal source without factory
Adjustment process, also ensure that terminal display brightness will not it is less than normal, energy consumption testing can be passed through.
Further, on the basis of the first embodiment for the device that modulus signal of the present invention is compensated, modulus signal is proposed
The second embodiment of the device of compensation, reference picture 4, in a second embodiment, parameter setting module 40 include：
Yield value judging unit 41, for judging whether the first red primary yield value is less than the first signal source corresponding second
Threshold value；
First gain increasing unit 42, for when the first red primary yield value is less than Second Threshold, by the first red primary
Yield value increases to Second Threshold, wherein the first red primary yield value after increase is used as the second red primary yield value；
Second gain increasing unit 43, for the first blue primary yield value to be increased into second value times, the second value is
The ratio of Second Threshold and the first red primary yield value, wherein the first blue primary yield value after increase increases as the second blue primary
Benefit value；
Parameter set unit 44, for according to the blue base of the first green primary yield value, the second red primary yield value and second
Color yield value sets the white balance parameter in terminal secondary signal source.
When green primary yield value is less than first threshold in the white balance parameter for judging the first signal source, to green primary gain
Increase to the corresponding first threshold of the first signal source and obtain the first green primary yield value, and increase corresponding red primary in proportion and increase
The first red primary yield value and the first blue primary yield value are obtained after beneficial value and blue primary yield value, then yield value judging unit
41 by the first red primary yield value Second Threshold corresponding with the first signal source (determination process of Second Threshold and first threshold base
This is identical) it is compared, when the first red gain value is less than Second Threshold, show the first green primary yield value, first red
Primary colours yield value and the first blue primary yield value may result in the brightness of image that secondary signal source is shown as secondary signal source
It is relatively low, therefore the first red gain value is increased to Second Threshold by the first gain increasing unit 42 obtains the second red gain value, together
When the second gain increasing unit 43 by the first blue gain value increase second value obtain the second blue gain value again, this second number
It is worth the ratio for Second Threshold and the first red primary yield value, parameter set unit 44 is by the first green primary yield value, the second red base
Color yield value and the second blue primary yield value are set to the white balance parameter in terminal secondary signal source.When the first red gain value
During more than or equal to Second Threshold, show the first green primary yield value, the first red primary yield value and the first blue primary yield value
Be applied to the brightness of image that secondary signal source will not cause secondary signal source to show relatively low, thus parameter set unit 44 can directly by
First green primary yield value, the first red primary yield value and the first blue primary yield value are joined as the white balance in secondary signal source
Number.
Connect the example of above-mentioned parameter setting module 40, the first red primary yield value R2=4, the first green primary yield value G2=
8, the first blue primary yield value B2=2, if Second Threshold is 6, adjust constant to 6, G2, it is red that B2 is adjusted to 3, i.e., second by R2
Primary colours yield value R3=6, the second blue primary yield value B3=3, and using R3, G2, B3 as secondary signal source white balance parameter.
In the present embodiment, the first red primary gain of the first signal source is determined whether by yield value judging unit 41
Whether value is less than Second Threshold, if the first red primary yield value is less than Second Threshold, the first gain increasing unit 42 is by first
Red primary yield value increases to Second Threshold and obtains the second red primary yield value, while the second gain increasing unit 43 is blue by first
Primary colours yield value increase second value obtains the second blue primary yield value again, and parameter set unit 44 is by the first green primary gain
Value, the first red primary yield value and the first blue primary yield value as secondary signal source white balance parameter, so as to ensure green
When primary colours yield value is sufficiently large, it is further ensured that red primary yield value is sufficiently large, green primary yield value can be aided in ensure terminal
The brightness in secondary signal source, is further ensured that terminal passes through energy consumption testing.
Further, on the basis of the second embodiment for the device that modulus signal of the present invention is compensated, modulus signal is proposed
The 3rd embodiment of the device of compensation, in the third embodiment,
Parameter set unit 44 includes：
Ratio in judgement unit 441, for judging whether the second red primary yield value is more than the corresponding red increasing of the first signal source
Beneficial extreme value；
First level setting unit 442, for being more than the corresponding red gain of the first signal source when the second red primary yield value
During extreme value, the second red primary yield value is decreased to red gain extreme value and the 3rd red primary yield value is obtained, and by the first green base
Color yield value, the 3rd red primary yield value and the second blue primary yield value are set to the white balance ginseng in terminal secondary signal source
Number.
When the red primary yield value of the first signal source obtains the second red primary yield value after adjusting twice, ratio is sentenced
Disconnected unit 441 judges whether the second red primary yield value is more than the corresponding red gain extreme value of the first signal source, if the second red base
Color yield value is more than red gain extreme value, shows that the image shown by the white balance parameter comprising the second red primary yield value can be inclined
Red, the second red primary yield value is decreased to red gain extreme value and by the second red base after reduction by first level setting unit 442
Color yield value is as the 3rd red primary yield value, and the second blue primary yield value is constant, then by the first green primary yield value, the 3rd
Red primary yield value and the second blue primary yield value are set to the white balance parameter in terminal secondary signal source.
In the present embodiment, once adjusted, to red primary yield value and blue primary gain to the progress of green primary yield value
Value is carried out after secondary adjustment, and ratio in judgement unit 441 is further red by the second red primary yield value obtained after adjusting twice
Gain extreme value is compared, and prevents that the second red primary yield value is excessive and causes the white balance comprising the second red primary yield value to be joined
The shown image of number is partially red, it is ensured that the image chroma shown by white balance parameter that secondary signal source is obtained is moderate.
Further, on the basis of the 3rd embodiment for the device that modulus signal of the present invention is compensated, modulus signal is proposed
The fourth embodiment of the device of compensation, in the fourth embodiment, parameter set unit 44 also include：
Second subprime setting unit 443, it is corresponding less than or equal to the first signal source for working as the second red primary yield value
During red gain extreme value, the first green primary yield value, the second red primary yield value and the second blue primary yield value are set to end
Hold the white balance parameter in secondary signal source.
When the red primary yield value of the first signal source obtains the second red primary yield value after adjusting twice, ratio is sentenced
Disconnected unit 441 judges whether the second red primary yield value is more than the corresponding red gain extreme value of the first signal source, if the second red base
Color yield value is less than or equal to red gain extreme value, shows the image shown by the white balance parameter comprising the second red primary yield value
Colourity is moderate, without being adjusted to the second red primary yield value, and then second subprime setting unit 443 increases the first green primary
Beneficial value, the second red primary yield value and the second blue primary yield value are set to the white balance parameter in terminal secondary signal source.
In the present embodiment, once adjusted, to red primary yield value and blue primary gain to the progress of green primary yield value
Value is carried out after secondary adjustment, and ratio in judgement unit 441 is further red by the second red primary yield value obtained after adjusting twice
Gain extreme value is compared, and prevents that the second red primary yield value is excessive and causes the white balance comprising the second red primary yield value to be joined
The shown image of number is partially red, it is ensured that the image chroma shown by white balance parameter that secondary signal source is obtained is moderate.
Further, on the basis of the 3rd or fourth embodiment of the device that modulus signal of the present invention is compensated, modulus letter
Number compensation device also include：
Color cast detection module 50, the white balance parameter in terminal secondary signal source is set to for being detected according to colorimeter system
Whether the image that green primary yield value, red primary yield value and blue primary yield value are formed occurs colour cast；If being set to end
The figure that green primary yield value, red primary yield value and the blue primary yield value of the white balance parameter in end secondary signal source are formed
As occurring colour cast, then first threshold, Second Threshold and/or red gain extreme value are adjusted, terminal secondary signal source is set to adjust
White balance parameter green primary yield value, red primary yield value and blue primary yield value.
In the present embodiment, colorimeter system can be using 1931CIE-XYZ standard colorimetric systems (i.e. CIE-XYZ colourities system
System), obtained in secondary signal source after the first signal source correspondence white balance parameter after being adjusted, parameter acquisition module 10 is obtained
Green primary yield value, red primary yield value and blue primary yield value in white balance parameter after adjustment, then color cast detection
Green primary yield value (G), red primary yield value (R) and the blue primary yield value (B) that module 50 obtains secondary signal source from
Value in CIE-RGB colorimeter systems turns with the value be converted in CIE-XYZ colorimeter systems, and color cast detection module 50 judges what is obtained
Value in green primary yield value (G), red primary yield value (R) and blue primary yield value (B) correspondence CIE-XYZ colorimeter systems is
It is no up to standard, i.e., judge to be set to the green primary gain of the white balance parameter in terminal secondary signal source based on CIE-XYZ colorimeter systems
Whether the image that value, red primary yield value and blue primary yield value are formed occurs colour cast.
If being set to the green primary yield value of the white balance parameter in terminal secondary signal source, red primary yield value and blue base
Colour cast occurs for image that color yield value is formed, then color cast detection module 50 increases or reduced first threshold, Second Threshold and red
One or more of three values of gain extreme value, and increasing or reducing first threshold, Second Threshold and red gain extreme value three
After one or more of value, first, second, third or the 4th implementation of the method for modulus signal of the present invention compensation are re-executed
Step in example, to adjust green primary yield value, the red primary yield value of the white balance parameter for being set to terminal secondary signal source
And blue primary yield value, and it is currently set for terminal the again according to colorimeter system (such as CIE-XYZ colorimeter systems) detection
The image that green primary yield value, red primary yield value and the blue primary yield value of the white balance parameter in binary signal source are formed is
No generation colour cast；If not occurring colour cast, the green primary for the white balance parameter for being currently set for terminal secondary signal source is preserved
Yield value, red primary yield value and blue primary yield value；If there is generation colour cast, continue to increase or reduce first threshold, the
One or more of three values of two threshold values and red gain extreme value, until the green primary of the white balance parameter in current secondary signal source
Colour cast does not occur for the image that yield value, red primary yield value and blue primary yield value are formed.
In addition, the tune of one or more of increase or reduction first threshold, three values of Second Threshold and red gain extreme value
During whole, sequencing, increase or the amplitude size of reduction of increase or reduction object can be set according to the actual requirements, example
First increase first threshold in this way, still first increase Second Threshold can be set with actual demand.
In the present embodiment, the green primary gain in the white balance parameter for being tentatively provided with terminal secondary signal source is passed through
After value, red primary yield value and blue primary yield value, color cast detection module 50 is set to terminal according to colorimeter system detection
The image that green primary yield value, red primary yield value and the blue primary yield value of the white balance parameter in secondary signal source are formed
Whether occur colour cast, if be set to the green primary yield value of the white balance parameter in terminal secondary signal source, red primary yield value with
And colour cast occurs for the image that blue primary yield value is formed, then adjusts first threshold, Second Threshold and/or red gain extreme value, with
Adjustment is set to green primary yield value, red primary yield value and the blue primary gain of the white balance parameter in terminal secondary signal source
It is worth and avoids showing the image of colour cast, using empirical value (such as first threshold, Second Threshold or red gain extreme value) and actual color
The scheme that degree detection is combined, it is to avoid make secondary signal source be based on institute because the difference of terminal hardware and software is not suitable with empirical value
Colour cast occurs for the white balance parameter display image of acquisition, also can go adjustment experience according to terminal hardware and software actual conditions
Value, makes to be set to the green primary yield value of the white balance parameter in secondary signal source, red primary yield value and blue primary yield value
Colour cast does not occur for the image formed.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Understood based on such, technical scheme is substantially done to prior art in other words
Going out the part of contribution can be embodied in the form of software product, and the computer software product is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions are to cause a station terminal equipment (can be mobile phone, computer, clothes
It is engaged in device, air conditioner, or network equipment etc.) method that performs each embodiment of the invention.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of method of modulus signal compensation, it is characterised in that the method for the modulus signal compensation includes：
After the signal source of terminal-pair first carries out blank level adjustment, the white balance parameter of the signal source of terminal first is obtained, wherein
The white balance parameter includes green primary yield value, red primary yield value and blue primary yield value；
Judge whether the green primary yield value in the white balance parameter is less than the corresponding first threshold of first signal source；
When the green primary yield value is less than the first threshold, the green primary yield value is increased into first threshold
Value, and the red primary yield value of the white balance parameter and blue primary yield value are increased into the first numerical value times, first numerical value times
For the first threshold and the ratio of the green primary yield value；
The terminal second is set to believe according to the green primary yield value after increase, red primary yield value and blue primary yield value
The white balance parameter in number source.
2. the method for modulus signal compensation as claimed in claim 1, it is characterised in that make the green primary yield value after increase
Increase for the red primary yield value after the first green primary yield value, increase as the blue primary after the first red primary yield value, increase
Benefit is worth as the first blue primary yield value,
The green primary yield value according to after increase, red primary yield value and blue primary yield value set the terminal the
The step of white balance parameter in binary signal source, includes：
Judge whether the first red primary yield value is less than the corresponding Second Threshold of first signal source；
When the first red primary yield value is less than the Second Threshold, the first red primary yield value is increased to described
Second Threshold, wherein the first red primary yield value after increase is used as the second red primary yield value；
By the first blue primary yield value increase second value times, the second value is that the Second Threshold and described first are red
The ratio of primary colours yield value, wherein the first blue primary yield value after increase is used as the second blue primary yield value；
Set according to the first green primary yield value, the second red primary yield value and the second blue primary yield value
The white balance parameter in the terminal secondary signal source.
3. the method for modulus signal compensation as claimed in claim 2, it is characterised in that described to be increased according to first green primary
Benefit value, the second red primary yield value and the second blue primary yield value set the white flat of the terminal secondary signal source
The step of weighing apparatus parameter, includes：
Judge whether the second red primary yield value is more than the corresponding red gain extreme value of first signal source；
When the second red primary yield value red gain extreme value corresponding more than first signal source, by the described second red base
Color yield value is decreased to the red gain extreme value and obtains the 3rd red primary yield value；
The first green primary yield value, the 3rd red primary yield value and the second blue primary yield value are set to
The white balance parameter in the terminal secondary signal source.
4. the method for modulus signal compensation as claimed in claim 3, it is characterised in that judgement second red primary increases
Also include after the step of beneficial value red gain extreme value whether corresponding more than first signal source：
When the second red primary yield value is less than or equal to the corresponding red gain extreme value of first signal source, by described the
One green primary yield value, the second red primary yield value and the second blue primary yield value are set to the terminal second
The white balance parameter of signal source.
5. the method for the modulus signal compensation as described in claim 3 to 4 any one, it is characterised in that the modulus signal
The method of compensation also includes：
Green primary yield value, the red primary for the white balance parameter for being set to the terminal secondary signal source are detected according to colorimeter system
Whether the image that yield value and blue primary yield value are formed occurs colour cast；
If being set to the green primary yield value of the white balance parameter in the terminal secondary signal source, red primary yield value and blue base
Colour cast occurs for the image that color yield value is formed, then adjusts the first threshold, Second Threshold and/or red gain extreme value, to adjust
Green primary yield value, red primary yield value and the blue primary of the whole white balance parameter for being set to the terminal secondary signal source increase
Benefit value.
6. a kind of device of modulus signal compensation, it is characterised in that the device of the modulus signal compensation includes：
Parameter acquisition module, for after the signal source of terminal-pair first carries out blank level adjustment, obtaining the signal source of terminal first
White balance parameter, wherein the white balance parameter include green primary yield value, red primary yield value and blue primary yield value；
Judge module, for judging whether the green primary yield value in the white balance parameter is less than first signal source correspondence
First threshold；
Increase module, for when the green primary yield value is less than the first threshold, the green primary yield value to be increased
Increase the first numerical value times to the first threshold, and by the red primary yield value of the white balance parameter and blue primary yield value,
First numerical value is again the first threshold and the ratio of the green primary yield value；
Parameter setting module, for according to the green primary yield value, red primary yield value and the blue primary yield value after increase
The white balance parameter in the terminal secondary signal source is set.
7. the device of modulus signal compensation as claimed in claim 6, it is characterised in that make the green primary yield value after increase
Increase for the red primary yield value after the first green primary yield value, increase as the blue primary after the first red primary yield value, increase
Benefit is worth as the first blue primary yield value,
The parameter setting module includes：
Yield value judging unit, for judging whether the first red primary yield value is less than first signal source corresponding the
Two threshold values；
First gain increasing unit, for when the first red primary yield value is less than the Second Threshold, by described first
Red primary yield value increases to the Second Threshold, wherein the first red primary yield value after increase is used as the second red primary
Yield value；
Second gain increasing unit, for the first blue primary yield value to be increased into second value times, the second value is institute
The ratio of Second Threshold and the first red primary yield value is stated, wherein the first blue primary yield value after increase is used as the
Two blue primary yield values；
Parameter set unit, for according to the first green primary yield value, the second red primary yield value and described
Two blue primary yield values set the white balance parameter in the terminal secondary signal source.
8. the device of modulus signal compensation as claimed in claim 7, it is characterised in that the parameter set unit includes：
Ratio in judgement unit, for judging whether the second red primary yield value is more than the corresponding red increasing of first signal source
Beneficial extreme value；
First level setting unit, for being more than the corresponding red gain of first signal source when the second red primary yield value
During extreme value, the second red primary yield value is decreased to the red gain extreme value and the 3rd red primary yield value is obtained, and will
The first green primary yield value, the 3rd red primary yield value and the second blue primary yield value are set to the end
Hold the white balance parameter in secondary signal source.
9. the device of modulus signal compensation as claimed in claim 8, it is characterised in that the parameter set unit also includes：
Second subprime setting unit, for when the second red primary yield value be less than or equal to first signal source it is corresponding
During red gain extreme value, the first green primary yield value, the second red primary yield value and second blue primary are increased
Beneficial value is set to the white balance parameter in the terminal secondary signal source.
10. the device of the modulus signal compensation as described in claim 8 to 9 any one, it is characterised in that the modulus signal
The device of compensation also includes：
Color cast detection module, for according to colorimeter system detect be set to the terminal secondary signal source white balance parameter it is green
Whether the image that primary colours yield value, red primary yield value and blue primary yield value are formed occurs colour cast；If being set to described
What green primary yield value, red primary yield value and the blue primary yield value of the white balance parameter in terminal secondary signal source were formed
Colour cast occurs for image, then adjusts the first threshold, Second Threshold and/or red gain extreme value, and the terminal is set to adjust
Green primary yield value, red primary yield value and the blue primary yield value of the white balance parameter in secondary signal source.
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| CN201510623623.9A CN105141934B (en) | 2015-09-25 | 2015-09-25 | The method and device of modulus signal compensation |
| PCT/CN2016/084290 WO2017049949A1 (en) | 2015-09-25 | 2016-06-01 | Analog/digital signal compensation method and apparatus |
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| CN107610180B (en) * | 2017-09-12 | 2020-03-13 | 上海小蚁科技有限公司 | AWB calibration method and device, computer-readable storage medium and terminal |
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| JP3397436B2 (en) * | 1994-04-13 | 2003-04-14 | 富士写真フイルム株式会社 | Video camera white balance device |
| JP3138152B2 (en) * | 1994-08-30 | 2001-02-26 | 三洋電機株式会社 | White balance adjustment device |
| CN100477810C (en) * | 2004-12-30 | 2009-04-08 | 熊猫电子集团有限公司 | High definition color TV variable debugging method |
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| CN103501430B (en) * | 2013-09-29 | 2016-04-13 | 京东方科技集团股份有限公司 | The automatic white balance adjustment method of liquid crystal display and device |
| CN104394392B (en) * | 2014-11-14 | 2016-09-28 | 广东欧珀移动通信有限公司 | A kind of white balance adjusting method, device and terminal |
| CN104392696A (en) * | 2014-12-01 | 2015-03-04 | 苏州立瓷电子技术有限公司 | White balance adjusting method of LED display screen |
| CN105141934B (en) * | 2015-09-25 | 2017-07-25 | 深圳Tcl数字技术有限公司 | The method and device of modulus signal compensation |
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2015
- 2015-09-25 CN CN201510623623.9A patent/CN105141934B/en active Active
-
2016
- 2016-06-01 WO PCT/CN2016/084290 patent/WO2017049949A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| CN105141934A (en) | 2015-12-09 |
| WO2017049949A1 (en) | 2017-03-30 |
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