CN104637465B - The bright chroma compensation method of display device local and system - Google Patents
The bright chroma compensation method of display device local and system Download PDFInfo
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Abstract
The present invention provides a kind of display device local bright chroma compensation method and system, and method is comprised the following steps：The some pixels for selecting display device are specified point, adjust the size of brightness reference value Z of four color RGBW of each specified point, according to brightness reference value Z that adjustment is obtainedR1, brightness reference value ZG1, brightness reference value ZB1, brightness reference value ZW1It is calculated the object brightness reference value of colors；According to the assorted object brightness reference values of RGB, the maximum and minimum of a value of the peak and minimum of the semaphore of colors, and assorted object brightness reference value are calculated the assorted corresponding semaphores of RGB of the specified point；The corresponding semaphore of display device each pixel is calculated by interpolation algorithm according to the rgb signal amount of the specified point.Said method is due to when carrying out local bright chroma compensation and being adjusted uniformity, it is only necessary to adjust the size of brightness reference value Z of pixel, homogeneity correction operation is carried out to display device fairly simple.
Description
Technical field
The present invention relates to display device display technology field, more particularly to a kind of display device local bright chroma compensation side
Method and display device local bright chroma compensation system.
Background technology
The application of display device is extremely extensive at present, including species such as hand-held, personal use terminals, while in public exhibition
The occasion such as looking at, perform on a large scale can also be using to different size and different types of display device.The display of display device
People part the most deeply concerned when effect is actually used, and the brightness of display device and uniformity of chromaticity strong influence are to use
The display effect at family, therefore one of development trend of display device is to improve the uniformity for showing at present, has been had at present various
Uniformity adjustment mode, but need by instrument when homogeneity correction operation is carried out, and due to needing the factor of adjustment
It is more, cause the comparatively laborious complexity of correct operation.
The content of the invention
Based on this, it is necessary to provide a kind of homogeneity correction that carries out to display device and operate fairly simple display device office
Portion's bright chroma compensation method and system.
A kind of display device local bright chroma compensation method, comprises the following steps：
The some pixels for selecting display device are specified point, adjust the brightness reference value of four color RGBW of each specified point
The size of Z, brightness reference value Z after being adjustedR1, brightness reference value ZG1, brightness reference value ZB1, brightness reference value ZW1；Its
In, brightness reference value Z includes brightness reference value ZR, brightness reference value ZG, brightness reference value ZB, brightness reference value ZW；
According to brightness reference value ZR1, brightness reference value ZG1, brightness reference value ZB1, brightness reference value ZW1It is calculated
Object brightness reference value Z'R, object brightness reference value Z'G, object brightness reference value Z'B；
Obtain the peak and minimum of the assorted semaphores of RGB, and object brightness reference value Z'R, target it is bright
Degree reference value Z'G, object brightness reference value Z'BMaximum and minimum of a value；It is according to the assorted object brightness reference values of RGB, assorted
Semaphore peak and minimum, and the maximum and minimum of a value of assorted object brightness reference value, be calculated described
The assorted corresponding semaphores of the RGB of specified point；
Display device each pixel is calculated by interpolation algorithm according to the rgb signal amount of the specified point corresponding
Semaphore；
The semaphore is issued in the control program of display device and is shown.
A kind of display device local bright chroma compensation system, including：
Selecting module, some pixels for selecting display device are specified point, adjust four colors of each specified point
The size of brightness reference value Z of RGBW, brightness reference value Z after being adjustedR1, brightness reference value ZG1, brightness reference value ZB1、
Brightness reference value ZW1；Wherein, brightness reference value Z includes brightness reference value ZR, brightness reference value ZG, brightness reference value ZB, brightness ginseng
Examine value ZW；
Computing module, for according to brightness reference value ZR1, brightness reference value ZG1, brightness reference value ZB1, brightness references
Value ZW1It is calculated object brightness reference value Z'R, object brightness reference value Z'G, object brightness reference value Z'B；
Acquisition module, for obtaining the peak and minimum of the assorted semaphores of RGB, and object brightness reference
Value Z'R, object brightness reference value Z'G, object brightness reference value Z'BMaximum and minimum of a value；It is bright according to the target that RGB is assorted
The maximum and minimum of a value of degree reference value, the peak and minimum of the semaphore of colors, and assorted object brightness reference value,
It is calculated the assorted corresponding semaphores of RGB of the specified point；
Interpolation calculation module, sets for being calculated display by interpolation algorithm according to the rgb signal amount of the specified point
The corresponding semaphore of standby each pixel；
Display module, is shown for the semaphore is issued in the control program of display device.
Above-mentioned display device local bright chroma compensation method and system, select some pixels of display device first to refer to
Fixed point, and the size of brightness reference value Z of specified point is adjusted, as semaphore does not have W colors, in the brightness references of adjustment specified point
By calculating Z after the size of value ZWIt is incorporated into ZR、ZG、ZBIn, the assorted object brightness reference values of RGB are obtained, so as to basis
The peak and the difference of minimum of the semaphore of RGB assorted object brightness reference value and colors, and assorted object brightness
The difference of the maximum and minimum of a value of reference value, is calculated the assorted corresponding semaphores of RGB of the specified point, next profit
The semaphore of each pixel of display device is calculated with interpolation algorithm, is shown by display device then；Due to
When carrying out local bright chroma compensation and being adjusted uniformity, it is only necessary to adjust the size of brightness reference value Z of pixel, especially
If being finely adjusted, it is only necessary to adjust brightness reference value ZW, homogeneity correction operation is carried out to display device simpler
It is single.
Description of the drawings
Fig. 1 is an embodiment display device local bright chroma compensation method flow chart；
Fig. 2 is another embodiment display device local bright chroma compensation method flow chart；
Fig. 3 is an embodiment display device RGBW specified point schematic diagrames；
Fig. 4 is an embodiment display device local bright chroma compensation system structural representation.
Specific embodiment
Display device local bright chroma compensation method below in conjunction with the accompanying drawings to the present invention and the specific embodiment of system
It is described in detail.
Fig. 1 is referred to, Fig. 1 is an embodiment display device local bright chroma compensation method flow chart.
A kind of display device local bright chroma compensation method, comprises the following steps：
Step S101：The some pixels for selecting display device are specified point, adjust four color RGBW's of each specified point
The size of brightness reference value Z, brightness reference value Z after being adjustedR1, brightness reference value ZG1, brightness reference value ZB1, brightness ginseng
Examine value ZW1；Wherein, brightness reference value Z includes brightness reference value ZR, brightness reference value ZG, brightness reference value ZB, brightness reference value
ZW；
In step S101, RGBW refers to red, green, blue, Bai Sise respectively, and the specified point of selection can be multiple pixels,
Such as 6,12 etc., the size of brightness reference value Z of four color RGBW pre-sets in the display device, adjusts the big of Z
The little brightness that can adjust display device and uniformity of chromaticity.
In one embodiment, nine pixels for selecting display device are specified point.
Nine pixels for selecting can be in the surrounding of display device and centre, can be in adjustment using nine pixels
Higher display device brightness and uniformity of chromaticity are obtained in the case of the brightness reference value of less specified point.
Step S103：According to brightness reference value ZR1, brightness reference value ZG1, brightness reference value ZB1, brightness reference value ZW1
It is calculated object brightness reference value Z'R, object brightness reference value Z'G, object brightness reference value Z'B；
In step s 103, as semaphore does not have W colors, pass through after the size of brightness reference value Z of adjustment specified point
Calculate ZWIt is incorporated into ZR、ZG、ZBIn, the assorted object brightness reference values of RGB are obtained, is subsequently to be calculated the specified point
RGB assorted corresponding semaphores foundation is provided.
In one embodiment, according to brightness reference value ZR1, brightness reference value ZG1, brightness reference value ZB1, brightness references
Value ZW1Calculate object brightness reference value Z'R, object brightness reference value Z'G, object brightness reference value Z'BThe step of can include：Root
According to brightness reference value ZR1, brightness reference value ZG1, brightness reference value ZB1, brightness reference value ZW1Calculated by computing formula
To object brightness reference value Z'R, object brightness reference value Z'G, object brightness reference value Z'B；Wherein, computing formula is：
If the excursion of brightness reference value Z is -1≤Z≤1,
If the excursion of brightness reference value Z is 0≤Z≤1, Z'R=ZR*ZW, Z'G=ZG*ZW, Z'B=ZB*ZW。
Step S105：Obtain the peak and minimum of the assorted semaphores of RGB, and the object brightness reference value
Z'R, object brightness reference value Z'G, object brightness reference value Z'BMaximum and minimum of a value；According to the assorted object brightnesses of RGB
The maximum and minimum of a value of reference value, the peak and minimum of the semaphore of colors, and assorted object brightness reference value, meter
Calculation obtains the assorted corresponding semaphores of RGB of the specified point；
In step S105, the peak and the difference of minimum of assorted semaphore, and assorted object brightness are obtained
The difference of the maximum and minimum of a value of reference value is for the excursion for obtaining assorted semaphore and brightness reference value, in colors
When object brightness refers to value changes, assorted semaphore also can be changed proportionally in excursion.
In one embodiment, according to the object brightness reference value that RGB is assorted, the peak of assorted semaphore and minimum
Value, and the assorted corresponding semaphores of the RGB of maximum and the minimum of a value calculating specified point of assorted object brightness reference value
The step of can include：
According to the assorted object brightness reference values of RGB, the peak and minimum of the semaphore of colors, and assorted target
The maximum and minimum of a value of brightness reference value, the assorted correspondences of RGB that the specified point is calculated by semaphore computing formula
Semaphore；Wherein, semaphore computing formula is：
If the excursion of brightness reference value Z is -1≤Z≤1,
Wherein, RmaxRepresent R chrominance signal amount peaks, RminRepresent R chrominance signal amount minimums, Z'RmaxRepresent object brightness
Reference value Z'RMaximum, GmaxRepresent G chrominance signal amount peaks, GminRepresent G chrominance signal amount minimums, Z'GmaxRepresent target
Brightness reference value Z'GMaximum, BmaxRepresent B chrominance signal amount peaks, BminRepresent B chrominance signal amount minimums, Z'BmaxRepresent
Object brightness reference value Z'BMaximum；
If the excursion of brightness reference value Z is 0≤Z≤1,
Ratio that object brightness reference value changes in excursion and assorted semaphore change in excursion
Ratio is identical, such that it is able to more easily adjust brightness and the uniformity of chromaticity of display device.
Step S107：Display device each picture is calculated by interpolation algorithm according to the rgb signal amount of the specified point
The corresponding semaphore of vegetarian refreshments；
In one embodiment, it is described that the corresponding semaphore step of display device each pixel is calculated by interpolation algorithm
Suddenly can include：It is calculated by spline curve interpolation algorithm, least square method interpolation algorithm or bilinear interpolation algorithm aobvious
Show the corresponding semaphore of equipment each pixel.
Can be in different shapes using spline curve interpolation algorithm, least square method interpolation algorithm or bilinear interpolation algorithm
The corresponding semaphore of each pixel can be more accurately calculated under condition.
Step S109：The semaphore is issued in the control program of display device and is shown.
In one embodiment, it is described the semaphore is issued in the control program of display device carry out step display it
After can also include：
Whether the brightness of detection display device reaches the uniformity criteria of setting with colourity, if being not reaching to, in adjustment
After the brightness of display device reaches the uniformity criteria of setting with colourity, flow process is exited.
After adjusting once, if detecting the brightness of display device and colourity is not reaching to the uniformity criteria that sets
Flow process can be repeatedly adjusted then, the brightness and uniformity of chromaticity to display device is adjusted, if reaching the uniformity mark of setting
Criterion can exit adjustment flow process.
Above-mentioned display device local bright chroma compensation method, some pixels for selecting display device first are specified point,
And the size of brightness reference value Z of specified point is adjusted, as semaphore does not have W colors, in brightness reference value Z of adjustment specified point
By calculating Z after sizeWIt is incorporated into ZR、ZG、ZBIn, the assorted object brightness reference values of RGB are obtained, so as to assorted according to RGB
Object brightness reference value and the semaphore of colors peak and the difference of minimum, and assorted object brightness reference value
The difference of maximum and minimum of a value, is calculated the assorted corresponding semaphores of RGB of the specified point, is next calculated using interpolation
Method is calculated the semaphore of each pixel of display device, is shown by display device then；Due to carrying out local
When bright chroma compensation is adjusted uniformity, it is only necessary to adjust the size of brightness reference value Z of pixel, especially if entering
Row fine setting, it is only necessary to adjust brightness reference value ZW, homogeneity correction operation is carried out to display device fairly simple.
In order to further describe the display device local bright chroma compensation method of the present invention in detail, below in conjunction with tool
Body application example is illustrated.
Fig. 2 is referred to, Fig. 2 is another embodiment display device local bright chroma compensation method flow chart.
Step S201：Determine the z values of specified point
Specified point is selected with the position (x, y) of the actual displayed pixel of display device, it is intended that the brightness reference value of point is
Z, increases z, then can improve the brightness value of present scope；Z is reduced, then reduces the brightness value of present scope, the z values of W, R, G, B are
It is adjustable.Tetra- colors of RGBW have independent z values, respectively ZR、ZG、ZB、ZW, it is the specified point respective value of tetra- colors of RGBW respectively.W colors
Adjustment, is the brightness uniformity for adjusting display device, and it is respectively by adjustment tri- colors of RGB in the bright of specified point that RGB three color schemes are whole
Spend to realize the target of the W chroma color uniformities for adjusting display device.
It is in this concrete application example, it is intended that nine specified points, as shown below.Respectively by 9 points below adjustment
The z values of tetra- colors of WRGB, finally obtain 9 points of Z respectivelyR、ZG、ZB、ZWValue
Step S201：Be converted to semaphore：
By the Z being input on the pageR、ZG、ZB、ZWValue is converted to the semaphore of corresponding RGB,
As actual signal amount only has tri- color of R, G, B, without W chrominance signal amounts, therefore need to be by the Z of W colorsWValue is changed into RGB,
Calculate object brightness reference value Z'R、Z'G、Z'B；
As the span of z is different, then the transformational relation of z to semaphore, therefore this concrete application example are influenced whether
Two kinds of z spans are introduced in citing, and other spans are extrapolated also dependent on this mode
If the excursion of brightness reference value Z is -1≤Z≤1,
Then
If the excursion of brightness reference value Z is 0≤Z≤1, Z'R=ZR*ZW, Z'G=ZG*ZW, Z'B=ZB*ZW；
Step S202：By the Z' for calculatingR、Z'G、Z'BBe converted to the input signal amount of correspondence RGB
If RGB assorted semaphore peak is Rmax、Gmax、Bmax, the lowest signal amount that can tune to is Rmin、Gmin、
Bmin, Z'RmaxBy there is point Z'RMaximum, Z'GmaxBy there is point Z'GMaximum, Z'BmaxBy there is point Z'BMaximum.
Then RGB tristimulus signals amounts is calculated as follows formula：
If the excursion of brightness reference value Z is -1≤Z≤1,
Wherein RmaxRepresent R chrominance signal amount peaks, RminRepresent R chrominance signal amount minimums, Z'RmaxRepresent object brightness ginseng
Examine value Z'RMaximum, GmaxRepresent G chrominance signal amount peaks, GminRepresent G chrominance signal amount minimums, Z'GmaxRepresent that target is bright
Degree reference value Z'GMaximum, BmaxRepresent B chrominance signal amount peaks, BminRepresent B chrominance signal amount minimums, Z'BmaxRepresent mesh
Mark brightness reference value Z'BMaximum；
If the excursion of brightness reference value Z is 0≤Z≤1,
Step S203：The semaphore of other pixels is obtained using interpolation；
The semaphore of the specified point calculated according to step S202, calculates each picture of display device by interpolation algorithm
The corresponding each point semaphore of vegetarian refreshments, including the rgb signal amount of each point.
Row interpolation, such as spline curve interpolation, least square method can be entered using different interpolation methods according to the actual requirements
Interpolation, bilinear interpolation etc..
By this step, the rgb signal amount for obtaining each pixel of display device after uniformity adjustment can be calculated.
It is also possible to go out the Z of each pixel of display device first by interpolation calculationR、ZG、ZB、ZWValue, its
The secondary Z by all pixels pointR、ZG、ZB、ZWValue is converted to the corresponding rgb signal amount of each point according to step S202.
Step S204：:Issue semaphore.
The rgb signal amount of each pixel of display device that step S203 is calculated is issued and is burnt according to specified location respectively
Record into the control program of display device, display device is then finally shown according to the semaphore for issuing
Step S205：It is recycled to final confirmation.
Display effect after observation adjustment, if still suffering from brightness and colourity inhomogeneities, is recycled to step one and adjusts again
The z values of whole each specified point, the above-mentioned uniformity of repetition adjust flow process, if meeting uniformity adjustment demand, exit this circulation, confirm
Final adjustment effect.
Fig. 4 is referred to, Fig. 4 is an embodiment display device local bright chroma compensation system structural representation.
A kind of display device local bright chroma compensation system, including：
Selecting module 301, some pixels for selecting display device are specified point, adjust four colors of each specified point
The size of brightness reference value Z of RGBW, brightness reference value Z after being adjustedR1, brightness reference value ZG1, brightness reference value ZB1、
Brightness reference value ZW1；Wherein, brightness reference value Z includes brightness reference value ZR, brightness reference value ZG, brightness reference value ZB, brightness ginseng
Examine value ZW；
Computing module 303, for according to brightness reference value ZR1, brightness reference value ZG1, brightness reference value ZB1, brightness
Reference value ZW1It is calculated object brightness reference value Z'R, object brightness reference value Z'G, object brightness reference value Z'B；
Acquisition module 305, for obtaining the peak and minimum of the assorted semaphores of RGB, and the object brightness
Reference value Z'R, object brightness reference value Z'G, object brightness reference value Z'BMaximum and minimum of a value；According to the assorted mesh of RGB
The maximum of mark brightness reference value, the peak and minimum of assorted semaphore, and assorted object brightness reference value and most
Little value, is calculated the assorted corresponding semaphores of RGB of the specified point；
Interpolation calculation module 307, is calculated display by interpolation algorithm for the rgb signal amount according to the specified point
The corresponding semaphore of each pixel of equipment；
Display module 309, is shown for the semaphore is issued in the control program of display device.
Above-mentioned display device local bright chroma compensation system, some pixels for selecting display device first are specified point,
And the size of brightness reference value Z of specified point is adjusted, as semaphore does not have W colors, in brightness reference value Z of adjustment specified point
By calculating Z after sizeWIt is incorporated into ZR、ZG、ZBIn, the assorted object brightness reference values of RGB are obtained, so as to assorted according to RGB
Object brightness reference value and the semaphore of colors peak and the difference of minimum, and assorted object brightness reference value
The difference of maximum and minimum of a value, is calculated the assorted corresponding semaphores of RGB of the specified point, is next calculated using interpolation
Method is calculated the semaphore of each pixel of display device, is shown by display device then；Due to carrying out local
When bright chroma compensation is adjusted uniformity, it is only necessary to adjust the size of brightness reference value Z of pixel, especially if entering
Row fine setting, it is only necessary to adjust brightness reference value ZW, homogeneity correction operation is carried out to display device fairly simple.
In one embodiment, the computing module 303 can be further used for：
According to brightness reference value ZR1, brightness reference value ZG1, brightness reference value ZB1, brightness reference value ZW1By calculating
Formula is calculated object brightness reference value Z'R, object brightness reference value Z'G, object brightness reference value Z'B；Wherein, calculate public
Formula is：
If the excursion of brightness reference value Z is -1≤Z≤1,
If the excursion of brightness reference value Z is 0≤Z≤1, Z'R=ZR*ZW, Z'G=ZG*ZW, Z'B=ZB*ZW。
In one embodiment, the acquisition module 305 can be further used for：
According to the assorted object brightness reference values of RGB, the peak and minimum of the semaphore of colors, and assorted target
The maximum and minimum of a value of brightness reference value, the assorted correspondences of RGB that the specified point is calculated by semaphore computing formula
Semaphore；Wherein, semaphore computing formula is：
If the excursion of brightness reference value Z is -1≤Z≤1,
Wherein, RmaxRepresent R chrominance signal amount peaks, RminRepresent R chrominance signal amount minimums, Z'RmaxRepresent object brightness
Reference value Z'RMaximum, GmaxRepresent G chrominance signal amount peaks, GminRepresent G chrominance signal amount minimums, Z'GmaxRepresent target
Brightness reference value Z'GMaximum, BmaxRepresent B chrominance signal amount peaks, BminRepresent B chrominance signal amount minimums, Z'BmaxRepresent
Object brightness reference value Z'BMaximum；
If the excursion of brightness reference value Z is 0≤Z≤1,
Ratio that object brightness reference value changes in excursion and assorted semaphore change in excursion
Ratio is identical, such that it is able to more easily adjust brightness and the uniformity of chromaticity of display device.
In one embodiment, the interpolation calculation module 307 is performed and described is calculated display device by interpolation algorithm
The process of the corresponding semaphore of each pixel is further used for：Calculated by spline curve interpolation algorithm, least square method interpolation
Method or bilinear interpolation algorithm are calculated the corresponding semaphore of display device each pixel.
Can be in different shapes using spline curve interpolation algorithm, least square method interpolation algorithm or bilinear interpolation algorithm
The corresponding semaphore of each pixel can be more accurately calculated under condition.
In one embodiment, nine pixels that can select display device are specified point.
Nine pixels for selecting can be in the surrounding of display device and centre, can be in adjustment using nine pixels
Higher display device brightness and uniformity of chromaticity are obtained in the case of the brightness reference value of less specified point.
In one embodiment, bright chroma compensation system in the present embodiment display device local can also include：
Detection module, for detecting whether the brightness of display device and colourity reach the uniformity criteria of setting, if not having
Reach, then, after the brightness in adjustment display device reaches the uniformity criteria of setting with colourity, exit flow process.
After adjusting once, if detecting the brightness of display device and colourity is not reaching to the uniformity criteria that sets
Flow process can be repeatedly adjusted then, the brightness and uniformity of chromaticity to display device is adjusted, if reaching the uniformity mark of setting
Criterion can exit adjustment flow process.
The display device local bright chroma compensation system of the present invention and display device local bright chroma compensation side of the invention
Method is corresponded, in the technical characteristic and its advantage of the embodiment elaboration of above-mentioned display device local bright chroma compensation method
Suitable for the embodiment of display device local bright chroma compensation system, hereby give notice that.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of display device local bright chroma compensation method, it is characterised in that comprise the following steps：
The some pixels for selecting display device are specified point, adjust brightness reference value Z of four color RGBW of each specified point
Size, brightness reference value Z after being adjustedR1, brightness reference value ZG1, brightness reference value ZB1, brightness reference value ZW1；Wherein, it is bright
Degree reference value Z includes brightness reference value ZR, brightness reference value ZG, brightness reference value ZB, brightness reference value ZW；
By Z after the size of brightness reference value Z of adjustment specified pointWIt is incorporated into ZR1、ZG1、ZB1In, obtain object brightness reference value
Z'R, object brightness reference value Z'G, object brightness reference value Z'B；
Obtain the peak and minimum of the assorted semaphores of RGB, and object brightness reference value Z'R, object brightness reference
Value Z'G, object brightness reference value Z'BMaximum and minimum of a value；Obtain the peak and minimum of the assorted semaphores of RGB
Difference, and the difference of the maximum and minimum of a value of RGB colors object brightness reference values, calculate RGB colors semaphores and brightness
The excursion of reference value, according to the assorted corresponding semaphores of RGB that the excursion calculates the specified point；Wherein, exist
When assorted object brightness refers to value changes, assorted semaphore is changed proportionally in the excursion；
The corresponding signal of display device each pixel is calculated by interpolation algorithm according to the rgb signal amount of the specified point
Amount；
The semaphore is issued in the control program of display device and is shown.
2. display device local bright chroma compensation method according to claim 1, it is characterised in that in adjustment specified point
By Z after the size of brightness reference value ZWIt is incorporated into ZR1、ZG1、ZB1In, obtain object brightness reference value Z'R, object brightness reference value
Z'G, object brightness reference value Z'BThe step of include：
According to brightness reference value ZR1, brightness reference value ZG1, brightness reference value ZB1, brightness reference value ZW1By computing formula
Calculate object brightness reference value Z'R, object brightness reference value Z'G, object brightness reference value Z'B, wherein, computing formula is：
If the excursion of brightness reference value Z is -1≤Z ＜ 0,
If the excursion of brightness reference value Z is 0≤Z≤1, Z'R=ZR1*ZW1, Z'G=ZG1*ZW1, Z'B=ZB1*ZW1。
3. display device local bright chroma compensation method according to claim 1, it is characterised in that obtain RGB colors
The difference of the peak and minimum of semaphore, and the difference of the maximum and minimum of a value of RGB colors object brightness reference values,
The excursion of RGB colors semaphores and brightness reference value is calculated, it is each according to the RGB that the excursion calculates the specified point
The step of color corresponding semaphore, includes：
According to the assorted object brightness reference values of RGB, the peak and minimum of the semaphore of colors, and assorted object brightness
The maximum and minimum of a value of reference value is calculated the corresponding signal of RGB colors of the specified point by semaphore computing formula
Amount；Wherein, semaphore computing formula is：
If the excursion of brightness reference value Z is -1≤Z ＜ 0,
Wherein, RmaxRepresent R chrominance signal amount peaks, RminRepresent R chrominance signal amount minimums, Z'RmaxRepresent object brightness reference value
Z'RMaximum, GmaxRepresent G chrominance signal amount peaks, GminRepresent G chrominance signal amount minimums, Z'GmaxRepresent object brightness ginseng
Examine value Z'GMaximum, BmaxRepresent B chrominance signal amount peaks, BminRepresent B chrominance signal amount minimums, Z'BmaxRepresent that target is bright
Degree reference value Z'BMaximum；
If the excursion of brightness reference value Z is 0≤Z≤1,
4. display device local bright chroma compensation method according to claim 1, it is characterised in that select display device
Nine pixels are specified point.
5. display device local bright chroma compensation method according to claim 1, it is characterised in that described to be calculated by interpolation
Method is calculated the corresponding semaphore step of display device each pixel to be included：By spline curve interpolation algorithm, most a young waiter in a wineshop or an inn
Multiplication interpolation algorithm or bilinear interpolation algorithm are calculated the corresponding semaphore of display device each pixel.
6. display device local bright chroma compensation method according to claim 1, it is characterised in that described by the signal
Amount also includes after carrying out step display in being issued to the control program of display device：
Whether the brightness of detection display device reaches the uniformity criteria of setting with colourity, if being not reaching to, shows in adjustment
After the brightness of equipment reaches the uniformity criteria of setting with colourity, flow process is exited.
7. a kind of display device local bright chroma compensation system, it is characterised in that include：
Selecting module, some pixels for selecting display device are specified point, adjust four color RGBW's of each specified point
The size of brightness reference value Z, brightness reference value Z after being adjustedR1, brightness reference value ZG1, brightness reference value ZB1, brightness ginseng
Examine value ZW1；Wherein, brightness reference value Z includes brightness reference value ZR, brightness reference value ZG, brightness reference value ZB, brightness reference value
ZW；
Computing module, for according to brightness reference value ZR1, brightness reference value ZG1, brightness reference value ZB1, brightness reference value ZW1
It is calculated object brightness reference value Z'R, object brightness reference value Z'G, object brightness reference value Z'B；
Acquisition module, for obtaining the peak and minimum of the assorted semaphores of RGB, and object brightness reference value Z
'R, object brightness reference value Z'G, object brightness reference value Z'BMaximum and minimum of a value；According to the assorted object brightness ginsengs of RGB
The maximum and minimum of a value of value, the peak and minimum of the semaphore of colors, and assorted object brightness reference value are examined, is calculated
Obtain the assorted corresponding semaphores of RGB of the specified point；
Interpolation calculation module, it is each for being calculated display device by interpolation algorithm according to the rgb signal amount of the specified point
The corresponding semaphore of individual pixel；
Display module, is shown for the semaphore is issued in the control program of display device.
8. display device local bright chroma compensation system according to claim 7, it is characterised in that the computing module enters
One step is used for：
According to brightness reference value ZR1, brightness reference value ZG1, brightness reference value ZB1, brightness reference value ZW1By computing formula
It is calculated object brightness reference value Z'R, object brightness reference value Z'G, object brightness reference value Z'B；Wherein, computing formula is：
If the excursion of brightness reference value Z is -1≤Z ＜ 0,
If the excursion of brightness reference value Z is 0≤Z≤1, Z'R=ZR1*ZW1, Z'G=ZG1*ZW1, Z'B=ZB1*ZW1。
9. display device local bright chroma compensation system according to claim 7, it is characterised in that the acquisition module enters
One step is used for：
According to the assorted object brightness reference values of RGB, the peak and minimum of the semaphore of colors, and assorted object brightness
The maximum and minimum of a value of reference value, the assorted corresponding letters of RGB that the specified point is calculated by semaphore computing formula
Number amount；Wherein, semaphore computing formula is：
If the excursion of brightness reference value Z is -1≤Z ＜ 0,
Wherein, RmaxRepresent R chrominance signal amount peaks, RminRepresent R chrominance signal amount minimums, Z'RmaxRepresent object brightness reference value
Z'RMaximum, GmaxRepresent G chrominance signal amount peaks, GminRepresent G chrominance signal amount minimums, Z'GmaxRepresent object brightness ginseng
Examine value Z'GMaximum, BmaxRepresent B chrominance signal amount peaks, BminRepresent B chrominance signal amount minimums, Z'BmaxRepresent that target is bright
Degree reference value Z'BMaximum；
If the excursion of brightness reference value Z is 0≤Z≤1,
10. display device local bright chroma compensation system according to claim 7, it is characterised in that the interpolation calculation
Module performs the process for being calculated the corresponding semaphore of display device each pixel by interpolation algorithm and further uses
In：Display device is calculated by spline curve interpolation algorithm, least square method interpolation algorithm or bilinear interpolation algorithm each
The corresponding semaphore of individual pixel.
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