CN105280124A - Gamma measurement method and device for four-color display system - Google Patents
Gamma measurement method and device for four-color display system Download PDFInfo
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Abstract
The invention provides a gamma measurement method and device for a four-color display system. The four-color display system comprises a display panel including multiple pixels, wherein each pixel comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel. The method comprises steps of generating a three-color bitmap used for storing a bitmap data storage region of gray-scale values; modifying a gray-scale value at an assigned position stored in the bitmap data storage region into a set gray-scale value, thereby modifying the three-color bitmap into a test bitmap; sending the test bitmap to the four-color display system, and driving a sub-pixel corresponding to a to-be-tested color with a gray-scale value at an assigned position stored in a bitmap data storage region of the test bitmap for display; and measuring a tristimulus value of the display panel, and obtaining a gamma curve according to the set gray-scale value and a corresponding tristimulus value. The method and the device can solve the technical problem of using a three-color image for measuring a gamma curve of the four-color display system.
Description
Technical field
All things considered of the present invention relates to four look display systems technology fields, more particularly, relates to a kind of gamma (Gamma) measuring method and device of four look display systems.
Background technology
Existing display system generally includes the display panel with multiple pixel.By display panel, Red Green Blue is mixed the color producing needs mutually.In described display panel, a pixel can comprise three sub-pixels: the first sub-pixel (red sub-pixel), the second sub-pixel (green sub-pixels) and the 3rd sub-pixel (blue subpixels).By adjusting the penetrance (grey decision-making) of each sub-pixel and the light penetrating each sub-pixel being carried out mixing the color producing needs.A new generation's four look display systems are that the pixel in the display panel of existing display system adds the 4th sub-pixel (that is, white sub-pixels or yellow sub-pixel) to improve display effect.
The situation that there is luminance difference between the image of input and the image of output is there will be in the display system such as display, televisor, this luminance difference represents by gamma curve, usual gamma curve refers to the gamma curve for a kind of color (such as, red, green or blue).The signal source of existing such as personal computer (PC) etc. generally can generate image three-colo(u)r (that is, the image formed by red, green and blue mixing).Image three-colo(u)r comprises multiple pixel, and the pixel value of each pixel comprises the grey decision-making of the first color component, the grey decision-making of the second color component and the grey decision-making of the 3rd color component.
In order to measure the performance of four look display systems, need generate four-color image and sent to by four-color image four look display systems to show, wherein, four-color image is by red, the green and blue image mixing mutually with yellow or white and formed.Existing generation four-color image also generally comprises by the method that four look display systems carry out showing: by the grey decision-making of the first color component of the pixel value of pixel each in image three-colo(u)r, the grey decision-making of the second color component and the grey decision-making of the 3rd color component are weighted summation, or by other grey decision-making based on the first color component, the grey decision-making of the second color component and the grey decision-making of the 3rd color component obtain the method for the grey decision-making of the 4th color component, obtain the grey decision-making of the 4th color component, corresponding pixel is given by the grey decision-making of the 4th color component obtained, thus be that in image three-colo(u)r, each pixel gives the grey decision-making of corresponding 4th color component to generate four-color image, the pixel of the correspondence on the display panel of four look display systems is driven according to four grey decision-making in the pixel value of pixel each in four-color image.
Four-color image can be generated based on said method and carry out the tristimulus values that shows to measure four look display systems.But, when the grey decision-making of the grey decision-making of the first color component of the pixel value of each pixel of image three-colo(u)r, the grey decision-making of the second color component and the 3rd color component is 0, the grey decision-making of the 4th color component obtained by modes such as weighted sums may also be 0.Now, the grey decision-making cannot measuring the 4th color component is the tristimulus values of display panel during value in [1, setting grey decision-making] interval.
Summary of the invention
In order to overcome the deficiencies in the prior art, exemplary embodiment of the present invention provides a kind of gamma survey method and apparatus of four look display systems, utilizes image three-colo(u)r to measure the technical matters of the gamma curve of four look display systems to solve.
A kind of gamma survey method of four look display systems is provided on the one hand according to exemplary embodiment of the present invention, described four look display systems comprise: the display panel comprising multiple pixel, each pixel comprises the first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, and described method comprises:
(A) three color bitmaps comprising data bitmap storage area are generated, wherein, described three color bitmaps comprise multiple pixel, the pixel value of described multiple pixel is stored successively in institute's bit-map data storage area, the pixel value of each pixel comprises the grey decision-making that grey decision-making is 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, stores the grey decision-making of the grey decision-making of the first color component of the pixel value of each pixel, the grey decision-making of the second color component and the 3rd color component according to predesigned order;
(B) first grey decision-making stored from institute's bit-map data storage area to the predetermined grey decision-making in the 4th grey decision-making, a grey decision-making is selected every three grey decision-making, selected grey decision-making is revised as setting grey decision-making, thus described three color bitmaps are revised as test bitmap;
(C) sent to by described test bitmap described four look display systems to show, wherein, in the data bitmap storage area of described test bitmap, four continuous print grey decision-making are divided into one group, a pixel to be driven on a corresponding described display panel of group, in a group, four continuous print grey decision-making are corresponding in turn to the first sub-pixel of a pixel to be driven, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, and drive corresponding sub-pixel with each grey decision-making in each group that marks off, thus at least drive the one part of pixel of described display panel;
(D) tristimulus values of described display panel is measured;
(E) tristimulus values corresponding from different setting grey decision-making is measured for different setting grey decision-making repeated execution of steps (B) to step (D);
(F) according to different setting grey decision-making and corresponding tristimulus values, gamma curve is obtained.
Preferably, described predetermined value is zero.
Preferably, when predetermined grey decision-making is first grey decision-making to a grey decision-making in the 3rd grey decision-making, described gamma curve corresponds to the color of first color component of a described grey decision-making corresponding to described predesigned order, one of the second color component and the 3rd color component; When predetermined grey decision-making is the 4th grey decision-making, described gamma curve corresponds to the color except the color corresponding except the first color component, the second color component and the 3rd color component in four kinds of basic colors of described four look display systems.
Preferably, described first sub-pixel, the second sub-pixel and the 3rd sub-pixel are respectively red sub-pixel, green sub-pixels and blue subpixels, and described 4th sub-pixel is 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.
Preferably, the described span of grey decision-making that sets is as [0,255].
A kind of gamma measuring apparatus of four look display systems is provided on the other hand according to exemplary embodiment of the present invention, described four look display systems comprise: the display panel comprising multiple pixel, each pixel comprises the first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, and described device comprises:
Computer image genration module, for generating three color bitmaps comprising data bitmap storage area, wherein, described three color bitmaps comprise multiple pixel, the pixel value of described multiple pixel is stored successively in institute's bit-map data storage area, the pixel value of each pixel comprises the grey decision-making that grey decision-making is the first color component of predetermined value, the grey decision-making of the second color component and the grey decision-making of the 3rd color component, the grey decision-making of the first color component of the pixel value of each pixel is stored according to predesigned order, the grey decision-making of the second color component and the grey decision-making of the 3rd color component,
Image processing module, for first grey decision-making storing from institute's bit-map data storage area to the predetermined grey decision-making in the 4th grey decision-making, a grey decision-making is selected every three grey decision-making, selected grey decision-making is revised as setting grey decision-making, thus described three color bitmaps are revised as test bitmap;
Control module, for being sent to by described test bitmap described four look display systems to show, wherein, in the data bitmap storage area of described test bitmap, four continuous print grey decision-making are divided into one group, a pixel to be driven on a corresponding described display panel of group, in a group, four continuous print grey decision-making are corresponding in turn to the first sub-pixel of a pixel to be driven, second sub-pixel, 3rd sub-pixel and the 4th sub-pixel, and drive corresponding sub-pixel with each grey decision-making in each group that marks off, thus at least drive the one part of pixel of described display panel,
Measurement module, for measuring the tristimulus values of described display panel;
Gamma curve generation module, for according to setting grey decision-making and corresponding tristimulus values, obtains gamma curve.
Preferably, described predetermined value is zero.
Preferably, when predetermined grey decision-making is first grey decision-making to a grey decision-making in the 3rd grey decision-making, described gamma curve corresponds to the color of first color component of a described grey decision-making corresponding to described predesigned order, one of the second color component and the 3rd color component; When predetermined grey decision-making is the 4th grey decision-making, described gamma curve corresponds to the color except the color corresponding except the first color component, the second color component and the 3rd color component in four kinds of basic colors of described four look display systems.
Preferably, described first sub-pixel, the second sub-pixel and the 3rd sub-pixel are respectively red sub-pixel, green sub-pixels and blue subpixels, and described 4th sub-pixel is 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.
Preferably, the described span of grey decision-making that sets is as [0,255].
In apparatus and method according to an exemplary embodiment of the present invention, by generating three color bitmaps of the data bitmap storage area comprised for storing grey decision-making; The grey decision-making being positioned at specified location stored in data bitmap storage area is revised as setting grey decision-making, thus described three color bitmaps are revised as test bitmap; Described test bitmap is sent to described four look display systems, and the sub-pixel driving Color pair to be measured to answer with the grey decision-making of specified location in the data bitmap storage area of test bitmap is to show; Measure the tristimulus values of described display panel, thus according to setting grey decision-making and corresponding tristimulus values, obtain gamma curve, the technical matters utilizing image three-colo(u)r to measure the gamma curve of four look display systems can be solved.Said process is modified to initial three color bitmaps generated repeatedly, and without the need to generating extra image in new storage space, can not only save storage space, and can improve treatment effeciency.
Part in ensuing description is set forth general plotting of the present invention other in and/or advantage, some will be clearly by describing, or can learn through the enforcement of general plotting of the present invention.
Accompanying drawing explanation
Fig. 1 illustrates the part composition structure of the data bitmap storage area of three color bitmaps;
Fig. 2 illustrates the process flow diagram of the gamma survey method of four look display systems;
Fig. 3 illustrates the block diagram of the gamma measuring apparatus of four look display systems.
Embodiment
Now will in detail with reference to embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein, identical label refers to identical parts all the time.Below by referring to accompanying drawing, described embodiment will be described, to explain the present invention.
This exemplary embodiment adopts three color bitmaps of bitmap (BMP) form to measure four look display systems, wherein, three color bitmaps comprise data bitmap storage area, four look display systems comprise: the display panel comprising multiple pixel, and each pixel comprises the first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel.
In data bitmap storage area, store the pixel value of multiple pixels of three color bitmaps successively, pixel value comprises 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.Fig. 1 illustrates the part composition structure of the data bitmap storage area of three color bitmaps.With reference to Fig. 1, store the grey decision-making of the grey decision-making of first color component, the grey decision-making of second color component and three color component corresponding with first pixel respectively at R1, G1 and B1 place; The grey decision-making of the grey decision-making of first color component, the grey decision-making of second color component and three color component corresponding with second pixel is stored respectively at R2, G2 and B2 place; The grey decision-making of the grey decision-making of first color component, the grey decision-making of second color component and three color component corresponding with the 3rd pixel is stored respectively at R3, G3 and B3 place; The grey decision-making of the grey decision-making of first color component, the grey decision-making of second color component and three color component corresponding with the 4th pixel is stored respectively at R4, G4 and B4 place.
Fig. 2 illustrates the process flow diagram of the gamma survey method of four look display systems.
In step S101, generate three color bitmaps comprising data bitmap storage area, wherein, described three color bitmaps comprise multiple pixel, the pixel value of described multiple pixel is stored successively in institute's bit-map data storage area, the pixel value of each pixel comprises the grey decision-making that grey decision-making is 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, stores the grey decision-making of the grey decision-making of the first color component of the pixel value of each pixel, the grey decision-making of the second color component and the 3rd color component according to predesigned order.
Three color bitmaps can be BMP forms, in data bitmap storage area, store grey decision-making with unpressed form.Such as, for three color bitmaps of 8, each grey decision-making can take a byte, then a pixel of three color bitmaps takies three bytes in data bitmap storage area; For three color bitmaps of 16, each grey decision-making can take two bytes, then a pixel of three color bitmaps takies six bytes in data bitmap storage area; For three color bitmaps of 32, each grey decision-making can take four bytes, then a pixel of three color bitmaps takies 12 bytes in data bitmap storage area.
In step s 102, first grey decision-making stored from institute's bit-map data storage area to the predetermined grey decision-making in the 4th grey decision-making, a grey decision-making is selected every three grey decision-making, selected grey decision-making is revised as setting grey decision-making, thus described three color bitmaps are revised as test bitmap.
Exemplarily, when predetermined grey decision-making is the 4th grey decision-making, with reference to Fig. 1, respectively the grey decision-making being positioned at R2, G3 and B4 place in Fig. 1 can be revised as setting grey decision-making.
In rapid S103, sent to by described test bitmap described four look display systems to show, wherein, in the data bitmap storage area of described test bitmap, four continuous print grey decision-making are divided into one group, a pixel to be driven on a corresponding described display panel of group, in a group, four continuous print grey decision-making are corresponding in turn to the first sub-pixel of a pixel to be driven, second sub-pixel, 3rd sub-pixel and the 4th sub-pixel, and drive corresponding sub-pixel with each grey decision-making in each group that marks off, thus at least drive the one part of pixel of described display panel.
In the process of display test bitmap, need three looks in closedown four look display system to the coupling calculation method of four looks, i.e. following method mentioned above: by the grey decision-making of the first color component of the pixel value of pixel each in image three-colo(u)r, the grey decision-making of the second color component and the grey decision-making of the 3rd color component are weighted summation, or by other grey decision-making based on the first color component, the grey decision-making of the second color component and the grey decision-making of the 3rd color component obtain the method for the grey decision-making of the 4th color component, obtain the grey decision-making of the 4th color component, corresponding pixel is given by the grey decision-making of the 4th color component obtained, thus be that in image three-colo(u)r, each pixel gives the grey decision-making of corresponding 4th color component to generate four-color image.Can according to step S103 to show test bitmap after closing three looks to the coupling calculation method of four looks.
Exemplarily, in order to measure the tristimulus values of display panel more accurately, the driven pixel on display panel comprises the pixel of the center being positioned at display panel.
In step S104, measure the tristimulus values of described display panel; Tristimulus values described here can be the tristimulus values based on International Commission on Illumination (CIE) 1931 standard.
In step S105, set different setting grey decision-making and repeated execution of steps S102 to step S104 measures the tristimulus values corresponding from different setting grey decision-making.
In step s 106, according to different setting grey decision-making and corresponding tristimulus values, gamma curve is obtained.
Exemplarily, set the span of grey decision-making as [0,255], setting grey decision-making is preferably integer, if step S102 to step S104 is repeated 256 times, grey decision-making is set different during each execution, then can produce 256 different three color bitmaps, this 256 Zhang San color bitmap can be utilized to measure the tristimulus values of the 4th sub-pixel under 256 different GTGs of display panel, thus gamma curve can be calculated according to the tristimulus values measured and carry out color correction according to tristimulus values.Should be appreciated that, the span of setting grey decision-making is not limited to above-mentioned scope, such as, also can be [0,1023] or [0,2047].
256 different three color bitmaps to be produced when step S102 to step S104 being repeated 256 times above although mention, but the memory address shared by these bitmaps is constant, in other words, content in the memory address that the operation of above-mentioned steps S101 to step S106 only takies three color bitmaps changes, and does not need the memory address outside allocation.The resolution of 21 cun of liquid crystal display of main flow can be 1920 × 1080, namely 2073600 pixels are comprised, if generate three color bitmaps comprising 8 of 2073600 pixels, take 3 bytes according to each pixel to calculate, from the storage space taking 6220800 bytes (being greater than 5.9M); For four color bitmaps of 8 comprising 2073600 pixels, need the storage space taking at least 7.9M.If the measuring method of four look display systems traditionally, then need generation 256 four color bitmaps, at least need take the storage space of 2022.4M, and generate and process the processor resource that these 256 four color bitmaps also need the system that takies.Therefore, the present invention can play saving storage space, improves the effect for the treatment of effeciency.
Furthermore, when to measure GTG be the four look display of 16, use conventional methods and need generation 1024 four color bitmaps, a pixel of four color bitmaps of 16 accounts for the storage space of 8 bytes.Be 2073600 pixels of the liquid crystal display of 1920 × 1080 for resolution, need to generate four color bitmaps that every width at least takies 15.8M storage space accordingly, such four color bitmaps of 1024 width need the storage space at least taking 15.8G, adopt method of the present invention then only to need resolution that the image of the storage space taking about 11.9M can be 16 to GTG be 1920 × 1080 liquid crystal display measure, compared with prior art, a large amount of storage spaces has been saved.
Exemplarily, described predetermined value is zero.
Exemplarily, when predetermined grey decision-making is first grey decision-making to a grey decision-making in the 3rd grey decision-making, described gamma curve corresponds to the color of first color component of a described grey decision-making corresponding to described predesigned order, one of the second color component and the 3rd color component; When predetermined grey decision-making is the 4th grey decision-making, described gamma curve corresponds to the color except the color corresponding except the first color component, the second color component and the 3rd color component in four kinds of basic colors of described four look display systems.
If the first color component, the second color component and the 3rd color component are corresponding red, green and blue respectively, then, when predetermined grey decision-making is first grey decision-making, gamma curve is corresponding red; When predetermined grey decision-making is second grey decision-making, gamma curve is corresponding green; When predetermined grey decision-making is the 3rd grey decision-making, gamma curve is corresponding blue; When predetermined grey decision-making is the 4th grey decision-making, a gamma curve corresponding white or yellow.
Exemplarily, described first sub-pixel, the second sub-pixel and the 3rd sub-pixel are respectively red sub-pixel, green sub-pixels and blue subpixels, and described 4th sub-pixel is 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 illustrates the block diagram of the gamma measuring apparatus of four look display systems.Shown in Fig. 3, gamma measuring apparatus comprises: Computer image genration module 201, image processing module 202, control module 203, measurement module 204 and gamma curve generation module 207.
Computer image genration module 201 generates three color bitmaps comprising data bitmap storage area, wherein, described three color bitmaps comprise multiple pixel, the pixel value of described multiple pixel is stored successively in institute's bit-map data storage area, the pixel value of each pixel comprises the grey decision-making that grey decision-making is 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, stores the grey decision-making of the grey decision-making of the first color component of the pixel value of each pixel, the grey decision-making of the second color component and the 3rd color component according to predesigned order; Wherein, data bitmap storage area is arranged in storer 206.
First grey decision-making that image processing module 202 stores from institute's bit-map data storage area to the predetermined grey decision-making in the 4th grey decision-making, a grey decision-making is selected every three grey decision-making, selected grey decision-making is revised as setting grey decision-making, thus described three color bitmaps are revised as test bitmap.
Described test bitmap sends to four look display systems 205 to show by control module 203, wherein, in the data bitmap storage area of described test bitmap, four continuous print grey decision-making are divided into one group, a pixel to be driven on a corresponding described display panel of group, in a group, four continuous print grey decision-making are corresponding in turn to the first sub-pixel of a pixel to be driven, second sub-pixel, 3rd sub-pixel and the 4th sub-pixel, and drive corresponding sub-pixel with each grey decision-making in each group that marks off, thus at least drive the one part of pixel of described display panel.
Measurement module 204 measures the tristimulus values of described display panel.
Gamma curve generation module 207, according to different setting grey decision-making and corresponding tristimulus values, obtains gamma curve.
Exemplarily, described predetermined value is zero.
Exemplarily, when predetermined grey decision-making is first grey decision-making to a grey decision-making in the 3rd grey decision-making, described gamma curve corresponds to the color of first color component of a described grey decision-making corresponding to described predesigned order, one of the second color component and the 3rd color component; When predetermined grey decision-making is the 4th grey decision-making, described gamma curve corresponds to the color except the color corresponding except the first color component, the second color component and the 3rd color component in four kinds of basic colors of described four look display systems.
Exemplarily, described first sub-pixel, the second sub-pixel and the 3rd sub-pixel are respectively red sub-pixel, green sub-pixels and blue subpixels, and described 4th sub-pixel is 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.
Exemplarily, the described span of grey decision-making that sets is as [0,255].
The method and apparatus that above-described embodiment provides, image three-colo(u)r can be utilized to measure the gamma curve of four look display systems, in implementation procedure, content in the storage space repeatedly taken initial three color bitmaps generated is modified, and without the need to generating the image of the storage space outside occupying volume, the storage space not only taken is few, and can improve treatment effeciency.
In addition, nextport hardware component NextPort can be implemented as according to the modules in the gamma measuring apparatus of four look display systems of exemplary embodiment of the present invention.The process of those skilled in the art performed by the modules limited, can such as use field programmable gate array (FPGA), special IC (ASIC) or private server to realize modules.
Although show and described exemplary embodiments more of the present invention, but those skilled in the art should understand that, when not departing from by the principle of the present invention of claim and its scope of equivalents thereof and spirit, can modify to these embodiments.
Claims (10)
1. the gamma survey method of a look display system, described four look display systems comprise: the display panel comprising multiple pixel, each pixel comprises the first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, and it is characterized in that, described method comprises:
(A) three color bitmaps comprising data bitmap storage area are generated, wherein, described three color bitmaps comprise multiple pixel, the pixel value of described multiple pixel is stored successively in institute's bit-map data storage area, the pixel value of each pixel comprises the grey decision-making that grey decision-making is 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, stores the grey decision-making of the grey decision-making of the first color component of the pixel value of each pixel, the grey decision-making of the second color component and the 3rd color component according to predesigned order;
(B) first grey decision-making stored from institute's bit-map data storage area to the predetermined grey decision-making in the 4th grey decision-making, a grey decision-making is selected every three grey decision-making, selected grey decision-making is revised as setting grey decision-making, thus described three color bitmaps are revised as test bitmap;
(C) sent to by described test bitmap described four look display systems to show, wherein, in the data bitmap storage area of described test bitmap, four continuous print grey decision-making are divided into one group, a pixel to be driven on a corresponding described display panel of group, in a group, four continuous print grey decision-making are corresponding in turn to the first sub-pixel of a pixel to be driven, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, and drive corresponding sub-pixel with each grey decision-making in each group that marks off, thus at least drive the one part of pixel of described display panel;
(D) tristimulus values of described display panel is measured;
(E) tristimulus values corresponding from different setting grey decision-making is measured for different setting grey decision-making repeated execution of steps (B) to step (D);
(F) according to different setting grey decision-making and corresponding tristimulus values, gamma curve is obtained.
2. method according to claim 1, is characterized in that, described predetermined value is zero.
3. method according to claim 1, it is characterized in that, when predetermined grey decision-making is first grey decision-making to a grey decision-making in the 3rd grey decision-making, described gamma curve corresponds to the color of first color component of a described grey decision-making corresponding to described predesigned order, one of the second color component and the 3rd color component; When predetermined grey decision-making is the 4th grey decision-making, described gamma curve corresponds to the color except the color corresponding except the first color component, the second color component and the 3rd color component in four kinds of basic colors of described four look display systems.
4. method according to claim 1, is characterized in that, described first sub-pixel, the second sub-pixel and the 3rd sub-pixel are respectively red sub-pixel, green sub-pixels and blue subpixels, and described 4th sub-pixel is 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.
5. method according to claim 1, is characterized in that, the described span of grey decision-making that sets is as [0,255].
6. the gamma measuring apparatus of a look display system, described four look display systems comprise: the display panel comprising multiple pixel, each pixel comprises the first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, and it is characterized in that, described device comprises:
Computer image genration module, for generating three color bitmaps comprising data bitmap storage area, wherein, described three color bitmaps comprise multiple pixel, the pixel value of described multiple pixel is stored successively in institute's bit-map data storage area, the pixel value of each pixel comprises the grey decision-making that grey decision-making is the first color component of predetermined value, the grey decision-making of the second color component and the grey decision-making of the 3rd color component, the grey decision-making of the first color component of the pixel value of each pixel is stored according to predesigned order, the grey decision-making of the second color component and the grey decision-making of the 3rd color component,
Image processing module, for first grey decision-making storing from institute's bit-map data storage area to the predetermined grey decision-making in the 4th grey decision-making, a grey decision-making is selected every three grey decision-making, selected grey decision-making is revised as setting grey decision-making, thus described three color bitmaps are revised as test bitmap;
Control module, for being sent to by described test bitmap described four look display systems to show, wherein, in the data bitmap storage area of described test bitmap, four continuous print grey decision-making are divided into one group, a pixel to be driven on a corresponding described display panel of group, in a group, four continuous print grey decision-making are corresponding in turn to the first sub-pixel of a pixel to be driven, second sub-pixel, 3rd sub-pixel and the 4th sub-pixel, and drive corresponding sub-pixel with each grey decision-making in each group that marks off, thus at least drive the one part of pixel of described display panel,
Measurement module, for measuring the tristimulus values of described display panel;
Gamma curve generation module, for according to setting grey decision-making and corresponding tristimulus values, obtains gamma curve.
7. device according to claim 6, is characterized in that, described predetermined value is zero.
8. device according to claim 6, it is characterized in that, when predetermined grey decision-making is first grey decision-making to a grey decision-making in the 3rd grey decision-making, described gamma curve corresponds to the color of first color component of a described grey decision-making corresponding to described predesigned order, one of the second color component and the 3rd color component; When predetermined grey decision-making is the 4th grey decision-making, described gamma curve corresponds to the color except the color corresponding except the first color component, the second color component and the 3rd color component in four kinds of basic colors of described four look display systems.
9. device according to claim 6, is characterized in that, described first sub-pixel, the second sub-pixel and the 3rd sub-pixel are respectively red sub-pixel, green sub-pixels and blue subpixels, and described 4th sub-pixel is 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.
10. device according to claim 6, is characterized in that, the described span of grey decision-making that sets is as [0,255].
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