CN105280124B - The gamma survey method and apparatus of four color display systems - Google Patents
The gamma survey method and apparatus of four color display systems Download PDFInfo
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Abstract
A kind of gamma survey method and apparatus of four colors display system are provided.The four colors display system includes：Including the display panel of multiple pixels, each pixel includes the first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, the described method includes：Generation includes being used to store three color bitmaps of the bitmap data storage region of grey decision-making；The grey decision-making positioned at specified location stored in bitmap data storage region is revised as setting grey decision-making, so that three color bitmap is revised as test bitmap；The test bitmap is sent to the four colors display system, drives the corresponding sub-pixel of color to be measured to be shown with the grey decision-making of specified location in the bitmap data storage region of test bitmap；The tristimulus values of the display panel is measured, thus according to setting grey decision-making and corresponding tristimulus values, obtains gamma curve.According to the method and device, can solve to measure the technical problem of the gamma curve of four color display systems using image three-colo(u)r.
Description
Technical field
All things considered of the present invention is related to four color display systems technology fields, more particularly, is related to a kind of four colors display system
Gamma (Gamma) measuring method and device of system.
Background technology
Existing display system generally includes the display panel with multiple pixels.It is by display panel that red, green, blue three is former
Form and aspect are mixed to produce the color of needs.A pixel may include three sub-pixels in the display panel：First sub-pixel is (red
Sub-pixels), the second sub-pixel (green sub-pixels) and the 3rd sub-pixel (blue subpixels).Can be by adjusting each sub-pixel
Penetrance (grey decision-making) and the light for penetrating each sub-pixel is mixed to produce the color of needs.Four colors of new generation are shown
Show that the pixel in the display panel that system is existing display system adds the 4th sub-pixel (that is, white sub-pixels or yellow
Pixel) to improve display effect.
Occur that there are luminance difference between the image of input and the image of output in the display systems such as display, television set
Different situation, this luminance difference can represent that usual gamma curve refers to for a kind of color (for example, red by gamma curve
Color, green or blueness) gamma curve.The signal source of existing personal computer (PC) etc. can generally generate image three-colo(u)r
(that is, the image for being mixed and being formed by red, green and blueness).Image three-colo(u)r includes multiple pixels, the picture of each pixel
Element value includes the grey decision-making of the grey decision-making of the first color component, the grey decision-making of the second color component and the 3rd color component.
In order to measure the performance of four color display systems, it is necessary to generate four-color image and four-color image is sent to four colors and show
System to be shown, wherein, four-color image is the figure for being mixed and being formed with yellow or white by red, green and blueness
Picture.Existing generation four-color image is simultaneously generally comprised with the method that four color display systems are shown：Will be each in image three-colo(u)r
The grayscale of the grey decision-making of first color component of the pixel value of pixel, the grey decision-making of the second color component and the 3rd color component
Value is weighted summation, or passes through other grey decision-makings based on the first color component, the grey decision-making of the second color component and
The grey decision-making of three color components obtains the method for the grey decision-making of the 4th color component, obtaining the grayscale of the 4th color component
Value, assigns the grey decision-making of the 4th color component of acquisition to corresponding pixel, so as to be assigned for each pixel in image three-colo(u)r
The grey decision-making of corresponding 4th color component is given to generate four-color image；According in the pixel value of each pixel in four-color image
Four grey decision-makings drive the corresponding pixel on the display panel of four color display systems.
Four-color image can be generated based on the above method and is shown to measure the tristimulus values of four color display systems.So
And the grey decision-making of the grey decision-making, the second color component when the first color component of the pixel value of each pixel of image three-colo(u)r
When grey decision-making with the 3rd color component is 0, the grey decision-making of the 4th color component obtained by modes such as weighted sums can
Can be also 0.At this time, the display panel when grey decision-making that can not measure the 4th color component is the value in [1, set grey decision-making] section
Tristimulus values.
The content of the invention
For overcome the deficiencies in the prior art, the exemplary embodiment of the present invention provides a kind of gamma of four colors display system
Measuring method and device, to solve to measure the technical problem of the gamma curve of four color display systems using image three-colo(u)r.
On the one hand exemplary embodiment according to the present invention provides a kind of gamma survey method of four colors display system, described
Four color display systems include：Include the display panel of multiple pixels, each pixel includes the first sub-pixel, the second sub-pixel, the
Three sub-pixels and the 4th sub-pixel, the described method includes：
(A) generation includes three color bitmaps of bitmap data storage region, wherein, three color bitmap includes multiple pixels
Point, stores the pixel value of the multiple pixel, the pixel value of each pixel successively in institute's bit-map data storage region
It is the grey decision-making of the first color component, the grey decision-making of the second color component and the 3rd color component of predetermined value including grey decision-making
Grey decision-making, grey decision-making, the second color point of the first color component of the pixel value of each pixel are stored according to predesigned order
The grey decision-making of the grey decision-making of amount and the 3rd color component；
(B) the predetermined ash in first grey decision-making stored from institute's bit-map data storage region to the 4th grey decision-making
Rank is worth, and a grey decision-makings are selected every three grey decision-makings, and selected grey decision-making is revised as setting grey decision-making, so that by institute
State three color bitmaps and be revised as test bitmap；
(C) the test bitmap is sent to the four colors display system to be shown, wherein, the test bitmap
Four continuous grey decision-makings are divided into one group in bitmap data storage region, and correspond on the display panel one of a group treats
Pixel is driven, four continuous grey decision-makings are corresponding in turn to the first sub-pixel of a pixel to be driven, the second sub- picture in a group
Element, the 3rd sub-pixel and the 4th sub-pixel, and driven with each grey decision-making in each group marked off come corresponding sub-pixel,
So as at least drive the one part of pixel of the display panel；
(D) tristimulus values of the display panel is measured；
(E) step (B) is repeated to step (D) for different setting grey decision-makings to measure and different setting grayscale
It is worth corresponding tristimulus values；
(F) according to different setting grey decision-makings and corresponding tristimulus values, gamma curve is obtained.
Preferably, the predetermined value is zero.
Preferably, it is described when predetermined grey decision-making is a grey decision-making in first grey decision-making to the 3rd grey decision-making
Gamma curve corresponds to first color component, second color component of one grey decision-making according to corresponding to the predesigned order
With the color of one of the 3rd color component；When predetermined grey decision-making is the 4th grey decision-making, the gamma curve corresponds to described
In four kinds of basic colors of four color display systems except the first color component, the second color component and the 3rd color component correspond to
Color outside color.
Preferably, first sub-pixel, the second sub-pixel and the 3rd sub-pixel are respectively red sub-pixel, the sub- picture of green
Element and blue subpixels, the 4th sub-pixel are white sub-pixels or yellow sub-pixel；First color component, the second color point
Amount and the 3rd color component are respectively red component, green component and blue component.
Preferably, the value range for setting grey decision-making is [0,255].
On the other hand exemplary embodiment according to the present invention provides a kind of gamma measuring apparatus of four colors display system, institute
Stating four color display systems includes：Include the display panel of multiple pixels, each pixel include the first sub-pixel, the second sub-pixel,
3rd sub-pixel and the 4th sub-pixel, described device include：
Image generation module, three color bitmaps of bitmap data storage region are included for generating, wherein, three color bitmap
Including multiple pixels, the pixel value of the multiple pixel, each picture are stored successively in institute's bit-map data storage region
The pixel value of vegetarian refreshments include grey decision-making be the grey decision-making of the first color component of predetermined value, the grey decision-making of the second color component and
The grey decision-making of 3rd color component, the grayscale of the first color component of the pixel value of each pixel is stored according to predesigned order
The grey decision-making of value, the grey decision-making of the second color component and the 3rd color component；
Image processing module, for first grey decision-making being stored from institute's bit-map data storage region to the 4th ash
Predetermined grey decision-making in rank value rises, and selects a grey decision-making every three grey decision-makings, selected grey decision-making is revised as setting
Grey decision-making, so that three color bitmap is revised as test bitmap；
Control module, for the test bitmap to be sent to the four colors display system to be shown, wherein, it is described
Test four continuous grey decision-makings in the bitmap data storage region of bitmap and be divided into one group, a group corresponds to the display panel
On a pixel to be driven, four continuous grey decision-makings are corresponding in turn to the first sub- picture of a pixel to be driven in a group
Element, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, and with each group marked off each grey decision-making drive come pair
The sub-pixel answered, so as at least drive the one part of pixel of the display panel；
Measurement module, for measuring the tristimulus values of the display panel；
Gamma curve generation module, for according to setting grey decision-making and corresponding tristimulus values, obtaining gamma curve.
Preferably, the predetermined value is zero.
Preferably, it is described when predetermined grey decision-making is a grey decision-making in first grey decision-making to the 3rd grey decision-making
Gamma curve corresponds to first color component, second color component of one grey decision-making according to corresponding to the predesigned order
With the color of one of the 3rd color component；When predetermined grey decision-making is the 4th grey decision-making, the gamma curve corresponds to described
In four kinds of basic colors of four color display systems except the first color component, the second color component and the 3rd color component correspond to
Color outside color.
Preferably, first sub-pixel, the second sub-pixel and the 3rd sub-pixel are respectively red sub-pixel, the sub- picture of green
Element and blue subpixels, the 4th sub-pixel are white sub-pixels or yellow sub-pixel；First color component, the second color point
Amount and the 3rd color component are respectively red component, green component and blue component.
Preferably, the value range for setting grey decision-making is [0,255].
In apparatus and method according to an exemplary embodiment of the present invention, include being used for the position for storing grey decision-making by generating
Three color bitmaps of diagram data storage region；The grey decision-making positioned at specified location stored in bitmap data storage region is changed
To set grey decision-making, so that three color bitmap is revised as test bitmap；The test bitmap is sent to four color to show
Show system, the corresponding sub- picture of color to be measured is driven with the grey decision-making of specified location in the bitmap data storage region of test bitmap
Element is to be shown；The tristimulus values of the display panel is measured, thus according to setting grey decision-making and corresponding tristimulus values, is obtained
Gamma curve is taken, can solve to measure the technical problem of the gamma curve of four color display systems using image three-colo(u)r.The above process
Modify repeatedly to three color bitmaps being initially generated, can not only without generating extra image in new memory space
Memory space is enough saved, and treatment effeciency can be improved.
By in terms of partly illustrating that present general inventive concept is other in following description and/or advantage, there is one
Divide and will be apparent by description, or the implementation of present general inventive concept can be passed through and learnt.
Brief description of the drawings
Fig. 1 shows the part composition structure of the bitmap data storage region of three color bitmaps；
Fig. 2 shows the flow chart of the gamma survey method of four color display systems；
Fig. 3 shows the block diagram of the gamma measuring apparatus of four color display systems.
Embodiment
The embodiment of the present invention is reference will now be made in detail, the example of the embodiment is shown in the drawings, wherein, identical mark
Number identical component is referred to all the time.It will illustrate the embodiment by referring to accompanying drawing below, to explain the present invention.
The present exemplary embodiment measures four color display systems using three color bitmaps of bitmap (BMP) form, wherein,
Three color bitmaps include bitmap data storage region, and four color display systems include：Include the display panel of multiple pixels, each pixel
Including the first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel.
Store the pixel value of multiple pixels of three color bitmaps successively in bitmap data storage region, pixel value includes the
The grey decision-making of the grey decision-making of one color component, the grey decision-making of the second color component and the 3rd color component.Fig. 1 shows three color bitmaps
Bitmap data storage region part composition structure.With reference to Fig. 1, stored and first pixel respectively at R1, G1 and B1
The grey decision-making of the grey decision-making of corresponding first color component, the grey decision-making of the second color component and the 3rd color component；In R2, G2
With stored respectively at B2 the grey decision-making of corresponding with second pixel point the first color component, the grey decision-making of the second color component and
The grey decision-making of 3rd color component；Store the first color component corresponding with the 3rd pixel respectively at R3, G3 and B3
The grey decision-making of grey decision-making, the grey decision-making of the second color component and the 3rd color component；The storage and the 4th respectively at R4, G4 and B4
Grey decision-making, the grey decision-making of the second color component and the grayscale of the 3rd color component of corresponding first color component of a pixel
Value.
Fig. 2 shows the flow chart of the gamma survey method of four color display systems.
In step S101, generation includes three color bitmaps of bitmap data storage region, wherein, three color bitmap includes
Multiple pixels, store the pixel value of the multiple pixel, each pixel successively in institute's bit-map data storage region
Pixel value include grey decision-making be predetermined value the first color component grey decision-making, the grey decision-making and the 3rd of the second color component
The grey decision-making of color component, stored according to predesigned order the first color component of the pixel value of each pixel grey decision-making, the
The grey decision-making of the grey decision-making of second colors component and the 3rd color component.
Three color bitmaps can be BMP forms, and grey decision-making is stored with unpressed form in bitmap data storage region.Example
Such as, three color bitmaps for 8, each grey decision-making can take a byte, then three color bitmaps a pixel is in place
Three bytes are taken in diagram data storage region；For three color bitmaps of 16, each grey decision-making can take two bytes, then and one
One pixel of three color bitmaps takes six bytes in bitmap data storage region；For three color bitmaps of 32, often
A grey decision-making can take four bytes, then three color bitmaps a pixel takes 12 in bitmap data storage region
A byte.
In step s 102, first grey decision-making stored from institute's bit-map data storage region is to the 4th grey decision-making
In predetermined grey decision-making rise, select a grey decision-makings every three grey decision-makings, selected grey decision-making be revised as setting grayscale
Value, so that three color bitmap is revised as test bitmap.
As an example, in the case where predetermined grey decision-making is the 4th grey decision-making, with reference to Fig. 1, will can be located at respectively in Fig. 1
Grey decision-making at R2, G3 and B4 is revised as setting grey decision-making.
In rapid S103, the test bitmap is sent to the four colors display system to be shown, wherein, the survey
Try four continuous grey decision-makings in the bitmap data storage region of bitmap and be divided into one group, a group is corresponded on the display panel
A pixel to be driven, in a group four continuous grey decision-makings be corresponding in turn to a pixel to be driven the first sub-pixel,
Second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, and driven with each grey decision-making in each group marked off to correspond to
Sub-pixel, so as at least drive the one part of pixel of the display panel.
, it is necessary to close three colors in four color display systems to the matching calculation side of four colors during bitmap is tested in display
Method, i.e., following method mentioned above：By the grey decision-making of the first color component of the pixel value of each pixel in image three-colo(u)r,
The grey decision-making of the grey decision-making of second color component and the 3rd color component is weighted summation, or is based on the first face by other
The grey decision-making of the grey decision-making of colouring component, the grey decision-making of the second color component and the 3rd color component obtains the 4th color component
The method of grey decision-making, to obtain the grey decision-making of the 4th color component, the grey decision-making of the 4th color component of acquisition is assigned corresponding
Pixel, so as to assign the grey decision-making of corresponding 4th color component for each pixel in image three-colo(u)r to generate four chromatic graphs
Picture.Test bitmap can be shown after the matching calculation method of three colors to four colors is closed according to step S103.
As an example, in order to more accurately measure the tristimulus values of display panel, the powered pixel on display panel
Including the pixel at the center of display panel.
In step S104, the tristimulus values of the display panel is measured；Tristimulus values described here may be based on state
Border illuminates the tristimulus values of the committee (CIE) 1931 standard.
In step S105, set different setting grey decision-makings and repeat step S102 to step S104 come measure with
The different corresponding tristimulus values of setting grey decision-making.
In step s 106, according to different setting grey decision-makings and corresponding tristimulus values, gamma curve is obtained.
As an example, setting the value range of grey decision-making as [0,255], setting grey decision-making is preferably integer, if will step
Rapid S102 to step S104 is repeated 256 times, and setting grey decision-making is different when performing every time, then can produce 256 differences
Three color bitmaps, the 4th sub-pixel of this 256 Zhang San color bitmap measurement display panel can be utilized under 256 different grayscale
Tristimulus values, so as to calculate gamma curve according to the tristimulus values measured and carry out color school according to tristimulus values
Just.It should be understood that the value range of setting grey decision-making is not limited to above range, for example, or [0,1023] or [0,2047].
Although mentioned above can produce 256 three different colors when step S102 to step S104 is repeated 256 times
Bitmap, but the storage address shared by these bitmaps be it is constant, in other words, the operation of above-mentioned steps S101 to step S106
Content in the storage address only taken to three color bitmaps is changed, without distributing extra storage address.It is main
The resolution ratio of 21 cun of liquid crystal displays of stream can be 1920 × 1080, i.e., including 2073600 pixels, if generation includes
Three color bitmaps of one 8 of 2073600 pixels, take 3 bytes according to each pixel and calculate, from occupancy
The memory space of 6220800 bytes (being more than 5.9M)；For four color bitmaps of 8 comprising 2073600 pixels, it is necessary to
Take at least memory space of 7.9M.If according to the measuring method of four traditional color display systems, generation 256 four is needed
Color bitmap, need at least take the memory space of 2022.4M, and generates and handle this 256 four color bitmaps and also need to take system
The processor resource of system.Therefore, the present invention can play saving memory space, improve the effect for the treatment of effeciency.
Furthermore, it is understood that when measuring the four color display that grayscale is 16, using conventional methods needs generation 1024
Four color bitmaps, a pixel of four color bitmaps of 16 account for the memory space of 8 bytes.For resolution ratio for 1920 ×
2073600 pixels of 1080 liquid crystal display are, it is necessary to be correspondingly generated four colors that every width at least takes 15.8M memory spaces
Bitmap, four color bitmaps as 1024 width need at least to take the memory space of 15.8G, and method using the present invention then only needs
The image for taking the memory space of 11.9M or so can be the liquid crystal display that the resolution ratio of 16 is 1920 × 1080 to grayscale
Measure, compared with prior art, saved substantial amounts of memory space.
As an example, the predetermined value is zero.
As an example, when predetermined grey decision-making is a grey decision-making in first grey decision-making to the 3rd grey decision-making, institute
Gamma curve is stated corresponding to first color component of one grey decision-making according to corresponding to the predesigned order, the second color point
Amount and the color of one of the 3rd color component；When predetermined grey decision-making is the 4th grey decision-making, the gamma curve corresponds to institute
State in four kinds of basic colors of four color display systems except the first color component, the second color component and the 3rd color component pair
Color outside the color answered.
If the first color component, the second color component and the 3rd color component are corresponding red, green and blue respectively,
When predetermined grey decision-making is first grey decision-making, gamma curve corresponds to red；When predetermined grey decision-making is second grey decision-making, gal
Horse curve corresponds to green；When predetermined grey decision-making is the 3rd grey decision-making, gamma curve corresponds to blueness；When predetermined grey decision-making is the
During four grey decision-makings, the corresponding white of gamma curve or yellow.
As an example, first sub-pixel, the second sub-pixel and the 3rd sub-pixel are respectively red sub-pixel, green
Pixel and blue subpixels, the 4th sub-pixel are white sub-pixels or yellow sub-pixel；First color component, the second color
Component and the 3rd color component are respectively red component, green component and blue component.
Fig. 3 shows the block diagram of the gamma measuring apparatus of four color display systems.Gamma measuring apparatus includes shown in Fig. 3：Image
Generation module 201, image processing module 202, control module 203, measurement module 204 and gamma curve generation module 207.
Image generation module 201 generates three color bitmaps for including bitmap data storage region, wherein, the three color bitmaps bag
Multiple pixels are included, store the pixel value of the multiple pixel, each pixel successively in institute's bit-map data storage region
It is the grey decision-making of the first color component of predetermined value, the grey decision-making of the second color component and that the pixel value of point, which includes grey decision-making,
The grey decision-making of three color components, stored according to predesigned order the first color component of the pixel value of each pixel grey decision-making,
The grey decision-making of the grey decision-making of second color component and the 3rd color component；Wherein, bitmap data storage region is located at memory 206
In.
First grey decision-making that image processing module 202 is stored from institute's bit-map data storage region is to the 4th grayscale
Predetermined grey decision-making in value rises, and a grey decision-making is selected every three grey decision-makings, and selected grey decision-making is revised as setting ash
Rank is worth, so that three color bitmap is revised as test bitmap.
The test bitmap is sent to four color display systems 205 to be shown by control module 203, wherein, the survey
Try four continuous grey decision-makings in the bitmap data storage region of bitmap and be divided into one group, a group is corresponded on the display panel
A pixel to be driven, in a group four continuous grey decision-makings be corresponding in turn to a pixel to be driven the first sub-pixel,
Second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, and driven with each grey decision-making in each group marked off to correspond to
Sub-pixel, so as at least drive the one part of pixel of the display panel.
Measurement module 204 measures the tristimulus values of the display panel.
Gamma curve generation module 207 obtains gamma curve according to different setting grey decision-makings and corresponding tristimulus values.
As an example, the predetermined value is zero.
As an example, when predetermined grey decision-making is a grey decision-making in first grey decision-making to the 3rd grey decision-making, institute
Gamma curve is stated corresponding to first color component of one grey decision-making according to corresponding to the predesigned order, the second color point
Amount and the color of one of the 3rd color component；When predetermined grey decision-making is the 4th grey decision-making, the gamma curve corresponds to institute
State in four kinds of basic colors of four color display systems except the first color component, the second color component and the 3rd color component pair
Color outside the color answered.
As an example, first sub-pixel, the second sub-pixel and the 3rd sub-pixel are respectively red sub-pixel, green
Pixel and blue subpixels, the 4th sub-pixel are white sub-pixels or yellow sub-pixel；First color component, the second color
Component and the 3rd color component are respectively red component, green component and blue component.
As an example, the value range for setting grey decision-making is [0,255].
The method and apparatus that above-described embodiment provides, the gamma curve of four color display systems is measured using image three-colo(u)r,
During realization, the content in the memory space taken repeatedly to three color bitmaps being initially generated is modified, without life
Into the image for taking extra memory space, the memory space not only taken up is few, and can improve treatment effeciency.
In addition, the modules in the gamma measuring apparatus of four color display systems of exemplary embodiment according to the present invention
It can be implemented as nextport hardware component NextPort.Processing of the those skilled in the art according to performed by the modules of restriction, can for example using
Field programmable gate array (FPGA), application-specific integrated circuit (ASIC) or private server realize modules.
Although having show and described some exemplary embodiments of the present invention, it will be understood by those skilled in the art that
, can be to these in the case where not departing from the principle of the present invention that its scope is limited by claim and its equivalent and spirit
Embodiment is modified.
Claims (10)
1. a kind of gamma survey method of four colors display system, the four colors display system include：Include the display of multiple pixels
Panel, each pixel include the first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, it is characterised in that described
Method includes：
(A) generation includes three color bitmaps of bitmap data storage region, wherein, three color bitmap includes multiple pixels,
The pixel value of the multiple pixel is stored in institute's bit-map data storage region successively, the pixel value of each pixel includes ash
Rank value is the grayscale of the grey decision-making of the first color component of predetermined value, the grey decision-making of the second color component and the 3rd color component
Value, grey decision-making, the ash of the second color component of the first color component of the pixel value of each pixel are stored according to predesigned order
Rank is worth and the grey decision-making of the 3rd color component；
(B) the predetermined grey decision-making in first grey decision-making stored from institute's bit-map data storage region to the 4th grey decision-making
Rise, a grey decision-makings are selected every three grey decision-makings, selected grey decision-making is revised as setting grey decision-making, so that by described three
Color bitmap is revised as test bitmap；
(C) the test bitmap is sent to the four colors display system to be shown, wherein, the bitmap of the test bitmap
Four continuous grey decision-makings are divided into one group in data storage areas, and correspond on the display panel one of a group is to be driven
Pixel, four continuous grey decision-makings are corresponding in turn to the first sub-pixel of a pixel to be driven, the second sub-pixel, in a group
Three sub-pixels and the 4th sub-pixel, and driven with each grey decision-making in each group marked off come corresponding sub-pixel, so that
At least drive the one part of pixel of the display panel；
(D) tristimulus values of the display panel is measured；
(E) step (B) is repeated to step (D) for different setting grey decision-makings to measure and different setting grey decision-makings pair
The tristimulus values answered；
(F) according to different setting grey decision-makings and corresponding tristimulus values, gamma curve is obtained.
2. according to the method described in claim 1, it is characterized in that, the predetermined value is zero.
3. according to the method described in claim 1, it is characterized in that, when predetermined grey decision-making is first grey decision-making to the 3rd ash
Rank value in a grey decision-making when, the gamma curve correspond to one grey decision-making according to corresponding to the predesigned order
The color of one of first color component, the second color component and the 3rd color component；When predetermined grey decision-making is the 4th grey decision-making
When, the gamma curve correspond to the four colors display system four kinds of basic colors in except the first color component, second
Color outside color component and the corresponding color of the 3rd color component.
4. according to the method described in claim 1, it is characterized in that, first sub-pixel, the second sub-pixel and the 3rd sub- picture
Element is respectively red sub-pixel, green sub-pixels and blue subpixels, and the 4th sub-pixel is white sub-pixels or yellow
Pixel；First color component, the second color component and the 3rd color component are respectively red component, green component and blueness point
Amount.
5. according to the method described in claim 1, it is characterized in that, the value range for setting grey decision-making is [0,255].
6. a kind of gamma measuring apparatus of four colors display system, the four colors display system include：Include the display of multiple pixels
Panel, each pixel include the first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, it is characterised in that described
Device includes：
Image generation module, three color bitmaps of bitmap data storage region are included for generating, wherein, three color bitmap includes
Multiple pixels, store the pixel value of the multiple pixel, each pixel successively in institute's bit-map data storage region
Pixel value include grey decision-making be predetermined value the first color component grey decision-making, the grey decision-making and the 3rd of the second color component
The grey decision-making of color component, stored according to predesigned order the first color component of the pixel value of each pixel grey decision-making, the
The grey decision-making of the grey decision-making of second colors component and the 3rd color component；
Image processing module, for first grey decision-making being stored from institute's bit-map data storage region to the 4th grey decision-making
In predetermined grey decision-making rise, select a grey decision-makings every three grey decision-makings, selected grey decision-making be revised as setting grayscale
Value, so that three color bitmap is revised as test bitmap；
Control module, for the test bitmap to be sent to the four colors display system to be shown, wherein, the test
Four continuous grey decision-makings are divided into one group in the bitmap data storage region of bitmap, and a group is corresponded on the display panel
One pixel to be driven, four continuous grey decision-makings are corresponding in turn to the first sub-pixel of a pixel to be driven, in a group
Two sub-pixels, the 3rd sub-pixel and the 4th sub-pixel, and driven with each grey decision-making in each group marked off come corresponding
Sub-pixel, so as at least drive the one part of pixel of the display panel；
Measurement module, for measuring the tristimulus values of the display panel；
Gamma curve generation module, for according to setting grey decision-making and corresponding tristimulus values, obtaining gamma curve.
7. device according to claim 6, it is characterised in that the predetermined value is zero.
8. device according to claim 6, it is characterised in that when predetermined grey decision-making is first grey decision-making to the 3rd ash
Rank value in a grey decision-making when, the gamma curve correspond to one grey decision-making according to corresponding to the predesigned order
The color of one of first color component, the second color component and the 3rd color component；When predetermined grey decision-making is the 4th grey decision-making
When, the gamma curve correspond to the four colors display system four kinds of basic colors in except the first color component, second
Color outside color component and the corresponding color of the 3rd color component.
9. device according to claim 6, it is characterised in that first sub-pixel, the second sub-pixel and the 3rd sub- picture
Element is respectively red sub-pixel, green sub-pixels and blue subpixels, and the 4th sub-pixel is white sub-pixels or yellow
Pixel；First color component, the second color component and the 3rd color component are respectively red component, green component and blueness point
Amount.
10. device according to claim 6, it is characterised in that the value range for setting grey decision-making is [0,255].
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