CN105989799A

CN105989799A - Image processing method and image processing device

Info

Publication number: CN105989799A
Application number: CN201510075267.1A
Authority: CN
Inventors: 赵小明; 杨城
Original assignee: Xian Novastar Electronic Technology Co Ltd
Current assignee: Xi'an Nova Nebula Technology Co., Ltd.
Priority date: 2015-02-12
Filing date: 2015-02-12
Publication date: 2016-10-05
Anticipated expiration: 2035-02-12
Also published as: CN105989799B

Abstract

The invention relates to an image processing method and an image processing device. The image processing method comprises the steps of acquiring a plurality of pieces of sub-pixel color data which is obtained through carrying out sub-pixel down-sampling on an original image and correspond to each physical pixel in a plurality of physical pixels of a display panel, wherein the original image comprises a plurality of original pixels, and each original pixel comprises corresponding multi-primary color data; and carrying out color complementing treatment on the plurality of pieces of sub-pixel color data of the plurality of physical pixels according to a specific algorithm to acquire color complementing treated sub-pixel color data corresponding to each physical pixel so as to generate target image data for the display panel to carry out image display. According to the invention, the specific sub-pixel color data color complementing treatment algorithm is adopted to carry out color complementing treatment on the sub-pixel color data obtained by performing down-sampling on sub-pixels, thereby being capable of effectively improving the image resolution, and eliminating a color error caused by a sub-pixel down-sampling technology under the condition of not affecting the image definition.

Description

Image processing method and image processing apparatus

Technical field

The present invention relates to Display Technique field, particularly to a kind of image processing method and a kind of figure As processing means.

Background technology

Display Technique is one of most critical part, LED (Light in the comprised technology of information industry Emitting Diode, light emitting diode) display screen system is as novel Display Technique, with its joint Energy, environmental protection, the advantage such as highlighted are gradually acceptable to the market, thus be widely used in city medium, The fields such as urban transportation.

The pursuit such as high-resolution of display quality is shown it is that LED display industry constantly pursues a goal.

Existing LED display many employings three primary colours Display Technique, the lifting for resolution is Using traditional Sampling techniques, the main density utilizing increase physical picture element and scale promote resolution Rate.The cost of this technology is high, and room for promotion is limited, also has in terms of processing technology and heat radiation There is certain drawback.In the display system, when utilizing sub-pix Sampling techniques that original image is sampled There will be color Aliasing Problem.Existing one is based on the display device sub-pix anti-color aliasing of arrangement Filtering method, refers to Application No. 201310314907.0, invention entitled " sub-based on two dimension The super-resolution display packing of pixel sampling and device " Chinese invention patent application, although necessarily Color mistake can be eliminated in degree, but original image can be obscured, it is impossible to get a desired effect.

Specifically, as disclosed by above-mentioned application for a patent for invention, it is to original image R, G, B primary colours Component (color data) applies the filtering of corresponding anti-color aliasing respectively, then presses filtered image Locus structure according to the arrangement of display device two-dimensional sub-pixel carries out sub-pix sampling to realize display The super-resolution of equipment shows.But, the content disclosed by this application for a patent for invention is by former Beginning image each primary colours structure wave filter eliminates color mistake, may make image blur, it is difficult to Reach the effect of high-resolution and fine definition.

Therefore, show field at LED at present, also do not have a kind of LED display packing can be veritably carrying High image resolution combines to reach fine definition and high-resolution with eliminating color mistake.

Summary of the invention

Therefore, for deficiency of the prior art, the present invention provide a kind of image processing method and A kind of image processing apparatus.

Specifically, a kind of image processing method that the embodiment of the present invention provides, for display floater Thering is provided destination image data to show to carry out picture, described display floater includes multiple physical picture element, Each described physical picture element includes the physics sub-pix of multiple different colours.Described image processing method Method includes step: obtain obtain because original image is carried out sub-pix down-sampling corresponding to each Multiple sub-pix color data of individual described physical picture element, described original image includes multiple original image Element, and each described original pixels includes corresponding multiple bases data；And to the plurality of thing The plurality of sub-pix color data of reason pixel carries out complementary color process and obtains corresponding to described in each After multiple complementary colors process of physical picture element, sub-pix color data is to generate described destination image data. Wherein, the plurality of sub-pix color data to the plurality of physical picture element carries out complementary color process bag Include: when any one target sub-pix color data is carried out complementary color process, mark off described in comprising Target sub-pix color data and the multiple sub-pix face adjacent with described target sub-pix color data The block of pixels of chromatic number evidence and based on the multiple pending sub-pix color data in described block of pixels and The multiple bases number of the multiple original pixels the most corresponding with the plurality of pending sub-pix color data Non-Sample Color Data according to judges whether to need to carry out complementary color and true when needs carry out complementary color Determining complementary color position and complementary color value size, wherein said multiple pending sub-pix color data include institute State target sub-pix color data and be different colours type with described target sub-pix color data Sub-pix color data.

In one embodiment of the invention, above-mentioned block of pixels is 3 × 3 block of pixels, and described 3 The plurality of sub-pix number of colours adjacent with described target sub-pix color data in × 3 block of pixels According to including at least two color class that is different from the color type of described target sub-pix color data Type.

In one embodiment of the invention, above-mentioned 3 × 3 block of pixels are with described target sub-pix color Data grid technology.

In one embodiment of the invention, above-mentioned block of pixels is 2 × 2 block of pixels, and described 2 The plurality of sub-pix number of colours adjacent with described target sub-pix color data in × 2 block of pixels According to including at least two color class that is different from the color type of described target sub-pix color data Type.

In one embodiment of the invention, above-mentioned block of pixels is triangular pixel block, and described three The color type of each sub-pix color data in dihedral block of pixels is different.

In one embodiment of the invention, each described physical picture element includes rectangular arrangement One the first color physics sub-pix, the second color physics sub-pix and two the 3rd color things Reason sub-pix and said two the 3rd color physics sub-pix are positioned on same diagonal.

In one embodiment of the invention, above-mentioned first color physics sub-pix is that red physics is sub- Pixel, described second color physics sub-pix is blue physics sub-pix, said two the 3rd color Physics sub-pix is two green physics sub-pixs.

In one embodiment of the invention, the first physics picture in adjacent two described physical picture elements A first color physics sub-pix that element and the second physical picture element all include being triangularly arranged, one Individual second color physics sub-pix and a 3rd color physics sub-pix；Described first physical picture element Described first color physics sub-pix and described second color physics sub-pix and described second physics The described 3rd color physics sub-pix of pixel is positioned at same a line and the institute of described first physical picture element State the described first color physics sub-pix of the 3rd color physics sub-pix and described second physical picture element And described second color physics sub-pix is respectively positioned on another adjacent lines.

In one embodiment of the invention, it may be judged whether need the method carrying out complementary color to include: to sentence An appointment in the multiple bases data of the original pixels that disconnected described target sub-pix color data is corresponding is not Whether Sample Color Data is the most all more than in described block of pixels and the described non-Sample Color Data of appointment is The sub-pix color data of same color type, and determine when judged result is "Yes" need into Row one color component complementary color, wherein said color component and the face of the non-Sample Color Data of described appointment Color type is identical.

In one embodiment of the invention, determine that the method for complementary color position includes: obtain described picture All in element block is the sub-pix number of colours of same color type with the non-Sample Color Data of described appointment Maximum sub-pix color data according to, and when the quantity of described maximum sub-pix color data is one Time individual, determine position corresponding to the described maximum sub-pix color data benefit as described color component Color bits is put；When the quantity of described maximum sub-pix color data is multiple, obtain described maximum sub- In the position that pixel color data is corresponding, described in distance, target sub-pix color data position is nearest Minimum range sub-pix color data, and when the quantity of described minimum range sub-pix color data When being one, determine that position corresponding to described minimum range sub-pix color data is as described color The complementary color position of component；And when the quantity of described minimum range sub-pix color data is multiple, Institute is determined according to relative to the pre-configured orientation priority of described target sub-pix color data position State position corresponding to one of the minimum range sub-pix color data complementary color as described color component Position.

In one embodiment of the invention, determine that the method for complementary color value size includes: by described mesh Mark sub-pix color data is updated to: the initial value of described target sub-pix color data and determining With described target sub-pix face in the multiple bases data of the original pixels that all complementary color positions are the most corresponding Chromatic number is according to the meansigma methods of the non-Sample Color Data for same color type；And by described in each Sub-pix color data corresponding to complementary color position is updated to: the sub-pix face that described complementary color position is corresponding The multiple bases number of the original pixels that the initial value of chromatic number evidence, described target sub-pix color data are corresponding Sub-pix color data corresponding with described complementary color position according to is the face of not sampling of same color type With described in the multiple bases data of the original pixels that chromatic number evidence is corresponding with other possible complementary color positions The non-Sample Color Data that sub-pix color data is same color type corresponding to complementary color position is flat Average.

Additionally, a kind of image processing apparatus that the embodiment of the present invention provides, for carrying to display floater Showing to carry out picture for destination image data, described display floater includes multiple physical picture element, often One described physical picture element includes the physics sub-pix of multiple different colours.Described image processing apparatus Including: sub-pix color data acquisition module, it is used for obtaining because original image is carried out under sub-pix Sampling and obtain corresponding to multiple sub-pix color data of physical picture element each described, described Original image includes multiple original pixels, and each described original pixels includes corresponding many bases Chromatic number evidence；And complementary color processing module, for the plurality of sub-picture to the plurality of physical picture element Element color data carries out complementary color process and obtains at corresponding to multiple complementary colors of physical picture element each described After reason, sub-pix color data is to generate described destination image data.Wherein, described complementary color processes mould Block includes: block of pixels divides submodule, for carrying out any one target sub-pix color data Complementary color process time, mark off comprise described target sub-pix color data and with described target sub-pix The block of pixels of multiple sub-pix color data that color data is adjacent；And complementary color processes submodule, For based on the multiple pending sub-pix color data in described block of pixels and locating with the plurality of waiting Face of not sampling in the multiple bases data of multiple original pixels that reason sub-pix color data is corresponding respectively Chromatic number is it is judged that the need of carrying out complementary color and determining complementary color position and benefit when needs carry out complementary color Colour size, wherein said multiple pending sub-pix color data include described target sub-pix face Chromatic number evidence and with the sub-pix number of colours that described target sub-pix color data is different colours type According to.

In one embodiment of the invention, above-mentioned block of pixels divides submodule for referring to according to control Order marks off 3 × 3 block of pixels, 2 × 2 block of pixels or triangular pixel block.

In one embodiment of the invention, above-mentioned complementary color process submodule includes: complementary color judges single Unit, in the multiple bases data judging original pixels corresponding to described target sub-pix color data One specify non-Sample Color Data whether the most all more than in described block of pixels and described appointment is not sampled Color data is the sub-pix color data of same color type, and when judged result is "Yes" Determine that needing to carry out a color component complementary color, wherein said color component and described appointment does not samples face The color type of chromatic number evidence is identical；Complementary color position determination unit, for determining described color component Complementary color position；And complementary color value computing unit, for calculating described target sub-pix color data Sub-pix color in the described block of pixels that the complementary color position of updated value and described color component is corresponding The updated value of data.

In one embodiment of the invention, above-mentioned complementary color position determination unit includes: based on brightness Really stator unit, being used for obtaining all in described block of pixels is same with described non-Sample Color Data Maximum sub-pix color data in the sub-pix color data of one color type, and when described maximum When the quantity of sub-pix color data is one, determine that described maximum sub-pix color data is corresponding Position is as the complementary color position of described color component；Based on determination of distance subelement, for working as institute State the quantity of maximum sub-pix color data when being multiple, obtain described maximum sub-pix color data The minimum range that in corresponding position, target sub-pix color data position described in distance is nearest is sub- Pixel color data, and when the quantity of described minimum range sub-pix color data is one, really Determine the complementary color position as described color component, position corresponding to described minimum range sub-pix color data Put；And based on orientation priority stator unit really, for when described minimum range sub-pix face When the quantity of chromatic number evidence is multiple, according to relative to described target sub-pix color data position Pre-configured orientation priority determine the position that one of described minimum range sub-pix color data is corresponding Complementary color position as described color component.

The above embodiment of the present invention uses specific sub-pix color data complementary color Processing Algorithm to sub-picture Sub-pix color data after element down-sampling carries out complementary color process, can be effectively improved image resolution ratio And in the case of not affecting picture clarity, eliminate the color mistake that sub-pix down-sampling technology causes By mistake.

By the detailed description below with reference to accompanying drawing, the other side of the present invention and feature become obvious. It is understood that this accompanying drawing is only the purpose design rather than the model as the present invention explained The restriction enclosed, this is because it should refer to appended claims.It should also be noted that it is unless another Pointing out outward, it is not necessary to scale accompanying drawing, they only try hard to illustrate conceptually described herein Structure and flow process.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail.

Fig. 1 is the flow chart of a kind of image processing method of the embodiment of the present invention.

Fig. 2 is each physics of the applicable display floater of image processing method of the embodiment of the present invention The rectanglar arrangement mode schematic diagram of the physics sub-pix of the multiple different colours in pixel.

Fig. 3 is each physics of the applicable display floater of image processing method of the embodiment of the present invention The triangular pitch mode schematic diagram of the physics sub-pix of the multiple different colours in pixel.

Fig. 4 is the complementary color handling process schematic diagram of the embodiment of the present invention.

Fig. 5 a and 5b is that multiple 3 × 3 block of pixels of the embodiment of the present invention divide schematic diagram.

Fig. 6 a to 6d is that multiple 2 × 2 block of pixels of the embodiment of the present invention divide schematic diagram.

Fig. 7 a to Fig. 7 h is that the various triangular block of pixels of the embodiment of the present invention divides schematic diagram.

Fig. 8 is the sub-pix number of colours obtained after first embodiment of the invention uses sub-pix down-sampling According to arrangement schematic diagram.

Fig. 9 a to 9d is that various sub-pix color data are carried out at complementary color by first embodiment of the invention 3 × 3 block of pixels schematic diagrams that reason is used.

Figure 10 is the sub-pix color obtained after second embodiment of the invention uses sub-pix down-sampling Data arrangement schematic diagram.

Figure 11 a to 11c is that second embodiment of the invention sub-pix various to odd-numbered line color data is entered Row complementary color processes 3 × 3 block of pixels schematic diagrams used.

Figure 12 a to 12c is that second embodiment of the invention antithesis several rows various sub-pix color data is entered Row complementary color processes 3 × 3 block of pixels schematic diagrams used.

Figure 13 a and the high-level schematic functional block diagram of image processing apparatus that Figure 13 b is the embodiment of the present invention.

Detailed description of the invention

Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with The detailed description of the invention of the present invention is described in detail by accompanying drawing.

Owing to the original pixels in the lack sampling of color, namely each original image is only sampled a face Colouring component, sub-pix Display Technique processes image can bring color Problem-Error, the following reality of the present invention Execute example for this problem, propose image processing method as shown in Figure 1, make the image after process There are high-resolution and fine definition.

The image processing method of the embodiment of the present invention for display floater provide destination image data with Carrying out picture for described display floater to show, described display floater includes multiple physical picture element, each Individual physical picture element includes the physics sub-pix of multiple different colours.For purposes of illustration only, the present embodiment with LED display panel illustrates as an example, and each of which physical picture element includes multiple different colours LED, such as red LED, green LED and blue led.

As it is shown in figure 1, the image processing method of the present embodiment includes step: obtain and adopt under sub-pix In the plurality of physical picture element of the corresponding display floater obtained after sample, each physical picture element is multiple Sub-pix color data；And the plurality of sub-pix color data to the plurality of physical picture element Carry out complementary color process to obtain corresponding to sub-pix after multiple complementary colors of physical picture element process each described Color data is to generate destination image data as output.

First, sub-pix down-sampling is illustrated: according to many in each physical picture element of display floater The exact arrangement mode of individual physics sub-pix, carries out sub-pix down-sampling to original image and includes following Two class situations:

(1) as in figure 2 it is shown, the row of multiple different colours physics sub-pixs in same physical picture element Mode for cloth be matrix arrangement, such as physical picture element P, it include a red sub-pixel, two green Color sub-pix and a blue subpixels；For situation shown in Fig. 2, original image is being carried out Asia During pixel down-sampling, can be with in the three primary colours data of the original pixels [0,0] in sampled original image Red data (or claim red component), original pixels [0,1] three primary colours data in green data Green data in the three primary colours data of (or claiming green component), original pixels [1,0] and original image Blue data (or claiming blue component) in the three primary colours data of element [1,1] is respectively as physical picture element A sub-pix red data (R) corresponding to P, two sub-pix green datas (G) and an Asia Pixel blue data (B)；By that analogy, i.e. available using physical picture element P as periodic arrangement weight Multiple sub-pix color data corresponding to the plurality of physical picture element of the display floater of multiple unit, Complementary color process is carried out for follow-up.

(2) as it is shown on figure 3, the row of multiple different colours physics sub-pixs in same physical picture element Mode for cloth is triangular pitch, and two the most adjacent physical picture element P1 and P2, it all includes one Individual red sub-pixel, a green sub-pixels and a blue subpixels, and physical picture element P1's is red The blue subpixels of color sub-pix, green sub-pixels and physical picture element P2 is positioned at same a line, physics picture The blue subpixels of element P1 and the red sub-pixel of physical picture element P2 and green sub-pixels are respectively positioned on separately One adjacent lines；For situation shown in Fig. 3, when original image is carried out sub-pix down-sampling, can (or claim red with the red data in the three primary colours data of the original pixels [0,0] in sampled original image Colouring component), green data (or claiming green component) in the three primary colours data of original pixels [0,1], Blue data (or claiming blue component) in the three primary colours data of original pixels [1,0] is respectively as thing Reason sub-pix red data (R), sub-pix green data (G) and sub-pix corresponding to pixel P1 is blue Chromatic number is according to (B)；And red in the three primary colours data of the original pixels [1,1] in sampled original image Chromatic number is according to green data in the three primary colours data of, original pixels [1,2], original pixels [0,2] Blue data in three primary colours data is respectively as the sub-pix redness number corresponding to physical picture element P2 According to (R), sub-pix green data (G) and sub-pix blue data (B)；By that analogy, the most available Combining as described in the display floater of periodic arrangement repetitive using physical picture element P1 and P2 Multiple sub-pix color data corresponding to multiple physical picture elements, carry out complementary color process for follow-up.

It follows that combine Fig. 4, complementary color process is described in detail:

A () divides block of pixels

Block of pixels can be 3*3 block of pixels, it is also possible to be 2*2 block of pixels or triangular pixel block etc., As long as block of pixels at least includes a R, G, a B.Specifically, Fig. 5 a and figure 5b illustrates two kinds using sub-pix red data (R) as 3 × 3 pixels of target sub-pix color data Block；In fig 5 a, target sub-pix color data (R) is positioned at nine grids block of pixels (3 × 3 pixels Block) center；In figure 5b, target sub-pix color data (R) is positioned at nine grids block of pixels (3 × 3 block of pixels) non-central location.3 × 3 pixels for other sub-pix color data (G, B) Block dividing mode is identical with 3 × 3 pixel dividing mode of sub-pix red data, the most superfluous at this State.It addition, Fig. 6 a to Fig. 6 d illustrates four kinds using sub-pix red data (R) as target sub-pix 2 × 2 block of pixels dividing mode of color data；And Fig. 7 a to Fig. 7 h illustrates eight kinds with sub-pix Red data (R) is as the triangular pixel block dividing mode of target sub-pix color data.

B () judges whether to need complementary color

Illustrate as a example by 3 × 3 block of pixels: mark off and comprise target sub-pix color data such as R data and 3 × 3 block of pixels of other 8 sub-pix color data being adjacent and target Asia picture After element color data is positioned at the center of 3 × 3 block of pixels, if target sub-pix red data (R component) Initial value be R0, two non-sample color in the three primary colours data of its corresponding original pixels Data are respectively G0 (green component) and B0 (blue component)

Take all of sub-pix green data (G) in above-mentioned 3 × 3 block of pixels, be defined as Gi (i=1,2 ... n；N is total number of sub-pix green data (G) in 3 × 3 pixels)；Take above-mentioned 3 All of sub-pix blue data (B) in × 3 block of pixels, be defined as Bi (i=1,2 ... m；M is 3 Total number of all sub-pix blue datas (B) in × 3 block of pixels), and maximum in definition Gi One amount is Gmax, and an amount maximum in Bi is Bmax.

(i) G component Rule of judgment: G0 ＞ Gmax (condition 1)

(ii) B component Rule of judgment: B0 ＞ Bmax (condition 2)

Above-mentioned condition 1 and/or condition 2 are if it is satisfied, then represent G around and/or B component pair The complementary color of this center R component is inadequate, needs the G in this 3 × 3 block of pixels and/or B component weight New assignment, namely need to carry out G component and/or B component complementary color.

C () determines complementary color position

[first] complementary color position is determined based on brightness:

Position corresponding for Gmax is denoted as a, and the present embodiment is designed as when above-mentioned condition 1 meets and Gmax When being one, it is determined that a position is as G component complementary color position.

Position corresponding for Bmax is denoted as b, and the present embodiment is designed as when above-mentioned condition 2 meets and Bmax When being one, it is determined that b position is B component complementary color position.

[secondly] determines complementary color position based on distance:

If there is multiple Gmax, then carrying out Distance Judgment, position corresponding to which G component is far from center R component is closest, then closest a position is defined as G component complementary color position.In like manner, If there is multiple Bmax, then carrying out Distance Judgment, the position which B component is corresponding is divided far from center R Measure closest, then closest b position is defined as B component complementary color position.

[again] complementary color position is determined based on orientation priority:

The most equal from the distance of center R component if there is multiple Gmax, then complementary color priority Can be set as is the G component in the orientation such as upper left, upper right, lower-left, bottom right successively, taken a position Put and be i.e. defined as G component complementary color position.In like manner, if there is multiple Bmax from center R component Distance the most equal, then complementary color priority can be set as be successively upper left, upper right, lower-left, The B component in the orientation such as bottom right, taken b position is i.e. defined as B component complementary color position.Certainly, phase Pre-set priority for each orientation of center R component can elastic set, and is not limited to above Listed.

D () calculates complementary color value size, have a following four situation:

Situation 1: only meet condition 1, illustrates to have only to carry out G component complementary color

The sub-pix color data needing again assignment has: the sub-pix of 3 × 3 block of pixels centers Red data (R component), the sub-pix green data (G component) of a position；

Complementary color value size is:

Center R component updated value is equal to original corresponding with a position in original image of its original value R0 The meansigma methods of the non-Sample Color Data (R component) in the three primary colours data of pixel,

A position G component updated value is equal to the three primary colours number of the original pixels corresponding to the R component of center The sub-pix green data (G) that non-Sample Color Data (G component) G0 with a position according to is corresponding The meansigma methods of initial value.

Situation 2: only meet condition 2, illustrates to have only to carry out B component complementary color

The sub-pix color data needing again assignment has: the sub-pix of 3 × 3 block of pixels centers Red data (R component), the sub-pix blue data (B component) of b position；

Complementary color value size is:

Center R component updated value is equal to original corresponding with b position in original image of its original value R0 The meansigma methods of the non-Sample Color Data (R component) in the three primary colours data of pixel,

B position B component updated value is equal to the three primary colours data of the original pixels corresponding to the R component of center In sub-pix blue data (B) corresponding to non-Sample Color Data (B component) B0 with b position at the beginning of The meansigma methods of initial value.

Situation 3: simultaneously meet condition 1, condition 2, illustrates to need to carry out G, B component complementary color

The sub-pix color data needing again assignment has: the sub-pix of 3 × 3 block of pixels centers Red data (R component), the sub-pix green data (G component) of a position, the sub-pix of b position Blue data (B component)；

Complementary color value size is:

Original corresponding equal to a position in its original value R0, original image of center R component updated value B position pair in non-Sample Color Data (R component) in the three primary colours data of pixel, original image The meansigma methods of the non-Sample Color Data (R component) in the three primary colours data of the original pixels answered,

A position G component updated value is equal to the three primary colours number of the original pixels corresponding to the R component of center The sub-pix green data (G) that non-Sample Color Data (G component) G0, a position according to is corresponding Face of not sampling in the three primary colours data of the original pixels that in initial value, original image, b position is corresponding The meansigma methods of chromatic number evidence (G component),

B position B component value is equal in the three primary colours data of the original pixels corresponding to the R component of center Non-Sample Color Data (B component) B0, the three of a position is corresponding in original image original pixels The sub-pix blue data that non-Sample Color Data (B component) in primary colours data is corresponding with b position (B) meansigma methods of initial value.

Situation 4: condition 1 and condition 2 are all unsatisfactory for, illustrates to be made without G, B component complementary color, Without assignment again.

At this it is noted that above-mentioned is using sub-pix red data as target sub-pix color Data illustrate as a example by carrying out complementary color process, for blue with sub-pix green data and sub-pix Data are respectively as the situation of target sub-pix color data, and its complementary color processing procedure is red with sub-pix The complementary color processing procedure of chromatic number evidence is identical, does not repeats them here.

For ease of understanding, especially exemplified by two examples, above-mentioned complementary color processing procedure is carried out in more detail below Explanation.

[first embodiment]

Assume for the physics sub-pix rectanglar arrangement mode shown in Fig. 2, after sub-pix down-sampling The data arrived are as shown in Figure 8.In Fig. 8, G1 and G2 represents different original images in original image Green data in the three primary colours data of element；Then can use as described below after sub-pix down-sampling Concrete complementary color scheme:

(1) sub-pix red data R [i, j] in Fig. 8 is carried out complementary color process: mark off a bag At least one B containing R [i, j] and being adjacent and the block of pixels of at least one G (G1 or G2), Nine grids block of pixels (3 × 3 block of pixels) such as on the left of Fig. 9 a shown in, if sub-pix red data The initial value of R [i, j] is R0 and sets the original graph corresponding with sub-pix red data R [i, j] Two non-Sample Color Data in the three primary colours data of the original pixels [i, j] in Xiang, namely green Chromatic number evidence and blue data are respectively G0 and B0；For purposes of illustration only, on the left of Fig. 9 a in nine grids Center sub-pix red data is labeled as R0, and four sub-pix green datas are excellent according to default orientation First level is respectively labeled as G1, G2, G3, G4 and four sub-pix blue datas according to default side Position priority is respectively labeled as B1, B2, B3 and B4, shown on the right side of the result after labelling such as Fig. 9 a. Then:

(1a) judge whether to need complementary color

Judge whether the condition needing to mend G component: G0 ＞ max (G1, G2, G3, G4), namely judge Whether all sub-pix green datas in nine grids block of pixels are both less than G0, if it is judged that be "Yes", then it represents that need to carry out G component complementary color；

Judge whether the condition needing to mend B component: B0 ＞ max (B1, B2, B3, B4), namely judge Whether all sub-pix blue datas in nine grids block of pixels are both less than B0, if it is judged that be "Yes", then it represents that need to carry out B component complementary color；

(1b) complementary color position is determined

The present embodiment is designed to G1, maximum in tetra-sub-pix green datas of G2, G3, G4 Corresponding position carries out complementary color.If a represents G1, in tetra-sub-pix green datas of G2, G3, G4 The position that maximum is corresponding, if having more than two positions is maximum simultaneously, then by these four sub-pictures The numbering sequencing (corresponding orientation priority) of element green data selects complementary color position, such as when G1=G2 and be the maximum in these four sub-pix green datas, then select position corresponding for G1 to make For complementary color position；

The present embodiment is designed to B1, maximum in tetra-sub-pix blue datas of B2, B3, B4 Corresponding position carries out complementary color.If b represents B1, in tetra-sub-pix blue datas of B2, B3, B4 The position that maximum is corresponding, if having more than two positions is maximum simultaneously, then by these four sub-pictures The numbering sequencing (corresponding orientation priority) of element blue data selects complementary color position, such as when B2=B3 and be the maximum in these four sub-pix blue datas, then select position corresponding for B2 to make For complementary color position；

(1c) determine complementary color value size (namely complementary color process after sub-pix color data values size, or Claim updated value)

I () works as G, B component is required to complementary color

Then complementary color value size is:

R [i, j]=(R0+R0 [a]+R0 [b])/3

G [a]=(G0+G0 [a]+G0 [b])/3

B [b]=(B0+B0 [a]+B0 [b])/3

(ii) complementary color, B component is needed to need not complementary color when G component

Then complementary color value size is:

R [i, j]=(R0+R0 [a])/2

G [a]=(G0+G0 [a])/2

(iii) complementary color, G component is needed to need not complementary color when B component

Then complementary color value size is:

R [i, j]=(R0+R0 [b])/2

B [b]=(B0+B0 [b])/2

(iv) all need not complementary color when G, B component, then without calculating complementary color value, directly adopt With initial value；

Above-mentioned R0 [a] is not adopting in the three primary colours data of the original pixels of a position in original image Sample red data, G0 [a] be the initial value of sub-pix green data of a position, B0 [a] be original Blue data of not sampling in the three primary colours data of the original pixels of a position in image, R0 [b] is former Red data of not sampling in the three primary colours data of the original pixels of b position, G0 [b] in beginning image For the green data of not sampling in the three primary colours data of the original pixels of b position in original image, B0 [b] is the initial value of the sub-pix blue data of b position.

(2) (G1) data G [i, j] green to sub-pix in Fig. 8 carries out complementary color process: mark off one The individual G1 of comprising and the block of pixels of at least one R being adjacent and at least one B, such as Fig. 9 b Nine grids block of pixels shown in Zuo Ce, if the initial value of sub-pix green data G [i, j] be G0 and If the original pixels [i, j] in the original image corresponding with sub-pix green data G [i, j] Non-Sample Color Data in three primary colours data, namely red data and blue data be respectively R0 And B0；For purposes of illustration only, the center sub-pix green data in nine grids is labeled as on the left of Fig. 9 b G0, other four sub-pix green datas are respectively labeled as G1, G2, G3, G4, two sub-pixs Red data is that R1, R2, two sub-pix blue datas are pressed according to default orientation priority flag It is respectively labeled as B1, B2, institute on the right side of the result after labelling such as Fig. 9 b according to default orientation priority Show.Then:

(2a) judge whether to need complementary color

Judge whether the condition needing to mend R component: R0 ＞ max (R1, R2), namely judge nine grids Whether all sub-pix red datas in block of pixels are both less than R0, if it is judged that be "Yes", Then represent and need to carry out R component complementary color；

Judge whether the condition needing to mend B component: B0 ＞ max (B1, B2), namely judge nine grids Whether all sub-pix blue datas in block of pixels are both less than B0, if it is judged that be "Yes", Then represent and need to carry out B component complementary color；

(2b) complementary color position is determined

The present embodiment is designed to the position that in two sub-pix red datas of R1, R2, maximum is corresponding Put and carry out complementary color.If a represents the position that in two sub-pix red datas of R1, R2, maximum is corresponding, If two positions are maximums simultaneously, then by the numbering sequencing of the two sub-pix red data (corresponding orientation priority) selects complementary color position, such as R1=R2 and be the two sub-pix redness Maximum in data, then select position corresponding for R1 as complementary color position；

The present embodiment is designed to the position that in two sub-pix blue datas of B1, B2, maximum is corresponding Put and carry out complementary color.If b represents the position that in two sub-pix blue datas of B1, B2, maximum is corresponding, If two positions are maximums simultaneously, then by the numbering sequencing of the two sub-pix blue data (corresponding orientation priority) selects complementary color position, such as B1=B2 and be the two sub-pix blueness Maximum in data, then select position corresponding for B1 as complementary color position；

(2c) determine complementary color value size (namely complementary color process after sub-pix color data values size, or Claim updated value)

I () works as R, B component is required to complementary color

Then complementary color value size is:

G [i, j]=(G0+G0 [a]+G0 [b])/3

R [a]=(R0+R0 [a]+R0 [b])/3

B [b]=(B0+B0 [a]+B0 [b])/3

(ii) complementary color, B component is needed to need not complementary color when R component

Then complementary color value size is:

G [i, j]=(G0+G0 [a])/2

R [a]=(R0+R0 [a])/2

(iii) complementary color, R component is needed to need not complementary color when B component

Then complementary color value size is:

G [i, j]=(G0+G0 [b])/2

B [b]=(B0+B0 [b])/2

(iv) all need not complementary color when R, B component, then without calculating complementary color value, directly adopt With initial value；

Above-mentioned G0 [a] is not adopting in the three primary colours data of the original pixels of a position in original image Sample green data, R0 [a] be the initial value of sub-pix red data of a position, B0 [a] be original Blue data of not sampling in the three primary colours data of the original pixels of a position in image, G0 [b] is former Green data of not sampling in the three primary colours data of the original pixels of b position, R0 [b] in beginning image For the red data of not sampling in the three primary colours data of the original pixels of b position in original image, B0 [b] is the initial value of the sub-pix blue data of b position.

(3) (G2) data G [i, j] green to sub-pix in Fig. 8 carries out complementary color process: mark off one The individual G2 of comprising and the block of pixels of at least one R being adjacent and at least one B, such as Fig. 9 c Nine grids block of pixels shown in Zuo Ce, if the initial value of sub-pix green color data G [i, j] is G0 and set the original pixels [i, j] in the original image corresponding with sub-pix green data G [i, j] Three primary colours pixel in non-Sample Color Data, namely red data and blue data be respectively R0 And B0；For purposes of illustration only, the center sub-pix green data in nine grids is labeled as on the left of Fig. 9 c G0, other four sub-pix green datas are respectively labeled as G1, G2, G3, G4, two sub-pixs Red data is that R1, R2, two sub-pix blue datas are pressed according to default orientation priority flag It is respectively labeled as B1, B2, institute on the right side of the result after labelling such as Fig. 7 c according to default orientation priority Show.Then:

(3a) judge whether to need complementary color

(3b) complementary color position is determined

The present embodiment is designed to the position that in two red sub-pixel data of R1, R2, maximum is corresponding Put and carry out complementary color.If a represents the position that in two red sub-pixel data of R1, R2, maximum is corresponding, If two positions are maximums simultaneously, then by the numbering sequencing of the two red sub-pixel data (corresponding orientation priority) selects complementary color position, such as R1=R2 and be the two red sub-pixel Maximum in data, then select position corresponding for R1 as complementary color position；

The present embodiment is designed to the position that in two blue subpixels data of B1, B2, maximum is corresponding Put and carry out complementary color.If b represents the position that in two blue subpixels data of B1, B2, maximum is corresponding, If two positions are maximums simultaneously, then by the numbering sequencing of the two blue subpixels data (corresponding orientation priority) selects complementary color position, such as B1=B2 and be the two blue subpixels Maximum in data, then select position corresponding for B1 as complementary color position；

(3c) determine complementary color value size (namely complementary color process after sub-pix color data values size, or Claim updated value)

I () works as R, B component is required to complementary color

Then complementary color value size is:

G [i, j]=(G0+G0 [a]+G0 [b])/3

R [a]=(R0+R0 [a]+R0 [b])/3

B [b]=(B0+B0 [a]+B0 [b])/3

Then complementary color value size is:

G [i, j]=(G0+G0 [a])/2

R [a]=(R0+R0 [a])/2

Then complementary color value size is:

G [i, j]=(G0+G0 [b])/2

B [b]=(B0+B0 [b])/2

Above-mentioned G0 [a] is not adopting in the three primary colours data of the original pixels of a position in original image Sample green data, R0 [a] be the initial value of sub-pix red data of a position, B0 [a] be original Blue data of not sampling in the three primary colours of the original pixels of a position in image, G0 [b] is original graph In Xiang, the green data of not sampling in the three primary colours data of the original pixels of b position, R0 [b] are original In image, the red data of not sampling in the three primary colours data of the original pixels of b position, B0 [b] are The initial value of the sub-pix blue data of b position.

(4) sub-pix blue data B [i, j] in Fig. 8 is carried out complementary color process: mark off a bag At least one R containing B and being adjacent and the block of pixels of at least one G (G1 or G2), such as, scheme Nine grids block of pixels shown on the left of 9d, if the initial value of sub-pix blue data B [i, j] is B0 And set the original pixels [i, j] in the original image corresponding with sub-pix blue data B [i, j] Three primary colours data in non-Sample Color Data, namely red data and green data be respectively R0 And G0；For purposes of illustration only, the center sub-pix blue data in nine grids is labeled as on the left of Fig. 9 d B0, four sub-pix green datas are respectively labeled as G1, G2, G3 according to default orientation priority, G4 and four sub-pix red datas are respectively labeled as R1, R2 according to default orientation priority, R3 and R4, shown on the right side of the result after labelling such as Fig. 9 d.Then:

(4a) judge whether to need complementary color

Judge whether the condition needing to mend R component: R0 ＞ max (R1, R2, R3, R4), namely judge Whether all sub-pix red datas in nine grids block of pixels are both less than R0, if it is judged that be "Yes", then it represents that need to carry out R component complementary color；

(4b) complementary color position is determined

The present embodiment is designed to R1, maximum in tetra-sub-pix red datas of R2, R3, R4 Corresponding position carries out complementary color.If a represents R1, in tetra-sub-pix red datas of R2, R3, R4 The position that maximum is corresponding, if having more than two positions is maximum simultaneously, then by these four sub-pictures The numbering sequencing (corresponding orientation priority) of element red data selects complementary color position, such as when R3=R4 and be the maximum in these four sub-pix red datas, then select position corresponding for R3 to make For complementary color position；

The present embodiment is designed to G1, maximum in tetra-sub-pix green datas of G2, G3, G4 Corresponding position carries out complementary color.If b represents G1, in tetra-sub-pix green datas of G2, G3, G4 The position that maximum is corresponding, if having more than two positions is maximum simultaneously, then by these four sub-pictures The numbering sequencing (corresponding orientation priority) of element green data selects complementary color position, such as when G3=G4 and be the maximum in these four sub-pix green datas, then select position corresponding for G3 to make For complementary color position；

(4c) determine complementary color value size (namely complementary color process after sub-pix color data values size, or Claim updated value)

I () is worked as R, G component and is required to complementary color

Then complementary color value size is:

B [i, j]=(B0+B0 [a]+B0 [b])/3

R [a]=(R0+R0 [a]+R0 [b])/3

G [b]=(G0+G0 [a]+G0 [b])/3

(ii) complementary color, G component is needed to need not complementary color when R component

Then complementary color value size is:

B [i, j]=(B0+B0 [a])/2

R [a]=(R0+R0 [a])/2

(iii) complementary color, R component is needed to need not complementary color when G component

Then complementary color value size is:

B [i, j]=(B0+B0 [b])/2

G [b]=(G0+G0 [b])/2

(iv) all need not complementary color when R, G component, then without calculating complementary color value, directly adopt With initial value；

Above-mentioned B0 [a] is not adopting in the three primary colours data of the original pixels of a position in original image Sample blue data, R0 [a] be the initial value of sub-pix red data of a position, G0 [a] be original Green data of not sampling in the three primary colours data of the original pixels of a position in image, B0 [b] is Blue data of not sampling in the three primary colours data of the original pixels of b position, R0 [b] in original image For the red data of not sampling in the three primary colours data of the original pixels of b position in original image, G0 [b] is the initial value of the sub-pix green data of b position.

First embodiment of the invention is by " red-blue two is green " in each pixel to display floater After sub-pix color data corresponding to four sub-pixs carries out above-mentioned complementary color process, available complementary color After process, each physical picture element (such as shown in Fig. 2) of display floater is carried out by sub-pix color data Addressing display, wherein, exports the calculating knot obtained after above-mentioned complementary color processes for R, B color data Fruit is worth, and G color data is finally output as to the calculating knot obtained after above-mentioned complementary color processes The half (namely half value) of fruit value.

[the second embodiment]

Assume for the physics sub-pix triangular pitch mode shown in Fig. 3, after sub-pix down-sampling The data obtained as shown in Figure 10, then can use as described below concrete after sub-pix down-sampling Complementary color scheme:

[odd-numbered line complementary color processing scheme]:

(1) odd-numbered line sub-pix red data R [i, j] in Figure 10 is carried out complementary color process: divide Go out a block of pixels comprising R and at least one B being adjacent and at least one G, such as, scheme Nine grids block of pixels (3 × 3 block of pixels) shown on the left of 11a, if sub-pix red data R [i, j] Initial value be R0 and set in the original image corresponding with sub-pix red data R [i, j] former Non-Sample Color Data in the three primary colours data of beginning pixel [i, j], namely green data and blueness Data are respectively G0 and B0；For purposes of illustration only, the center sub-pix in nine grids on the left of Figure 11 a Red data is labeled as R0, and three sub-pix green datas are marked respectively according to default orientation priority It is designated as G1, G2, G3 and three sub-pix blue datas to mark respectively according to default orientation priority Being designated as B1, B2, B3, shown on the right side of the result after labelling such as Figure 11 a.Then:

(1a) judge whether to need complementary color

Judge whether the condition needing to mend G component: G0 ＞ max (G1, G2, G3), namely judge nine Whether all sub-pix green datas in the lattice block of pixels of palace are both less than G0, if it is judged that be "Yes", then it represents that need to carry out G component complementary color；

Judge whether the condition needing to mend B component: B0 ＞ max (B1, B2, B3), namely judge nine Whether all sub-pix blue datas in the lattice block of pixels of palace are both less than B0, if it is judged that be "Yes", then it represents that need to carry out B component complementary color；

(1b) complementary color position is determined

The present embodiment is designed to G1, and in tri-sub-pix green datas of G2, G3, maximum is corresponding Position carry out complementary color.If a represents G1, maximum pair in tri-sub-pix green datas of G2, G3 The position answered, if having more than one position is maximum simultaneously, then by these three sub-pix green number According to numbering sequencing (corresponding orientation priority) select complementary color position, such as G1=G2 and be Maximum in these three sub-pix green data, then select position corresponding for G1 as complementary color position Put；

The present embodiment is designed to B1, and in tri-sub-pix blue datas of B2, B3, maximum is corresponding Position carry out complementary color.If b represents B1, maximum pair in tri-sub-pix blue datas of B2, B3 The position answered, if having more than one position is maximum simultaneously, then by these three sub-pix blueness number According to numbering sequencing (corresponding orientation priority) select complementary color position, such as B2=B3 and be Maximum in these three sub-pix blue data, then select position corresponding for B2 as complementary color position Put；

I () works as G, B component is required to complementary color

Then complementary color value size is:

R [i, j]=(R0+R0 [a]+R0 [b])/3

G [a]=(G0+G0 [a]+G0 [b])/3

B [b]=(B0+B0 [a]+B0 [b])/3

Then complementary color value size is:

R [i, j]=(R0+R0 [a])/2

G [a]=(G0+G0 [a])/2

Then complementary color value size is:

R [i, j]=(R0+R0 [b])/2

B [b]=(B0+B0 [b])/2

(2) odd-numbered line sub-pix green data G [i, j] in Figure 10 is carried out complementary color process: divide Go out a block of pixels comprising G1 and at least one R being adjacent and at least one B, such as, scheme Nine grids block of pixels shown on the left of 11b, if the initial value of sub-pix green data G [i, j] is G0 and set the original pixels [i, j] in the original image corresponding with sub-pix green data G [i, j] Three primary colours data in non-Sample Color Data, namely red data and blue data be respectively R0 And B0；For purposes of illustration only, the center sub-pix green data in nine grids is labeled as on the left of Figure 11 b G0, three sub-pix red datas are R1 according to default orientation priority flag, R2, R3, three Individual sub-pix blue data is respectively labeled as B1, B2, B3, labelling according to default orientation priority After result such as Figure 11 b on the right side of shown in.Then:

(2a) judge whether to need complementary color

Judge whether the condition needing to mend R component: R0 ＞ max (R1, R2, R3), namely judge nine Whether all sub-pix red datas in the lattice block of pixels of palace are both less than R0, if it is judged that be "Yes", then it represents that need to carry out R component complementary color；

(2b) complementary color position is determined

The present embodiment is designed to R1, and in tri-sub-pix red datas of R2, R3, maximum is corresponding Position carry out complementary color.If a represents R1, maximum pair in tri-sub-pix red datas of R2, R3 The position answered, if having more than one position is maximum simultaneously, then by these three sub-pix redness number According to numbering sequencing (corresponding orientation priority) select complementary color position, such as R1=R2 and be Maximum in these three sub-pix red data, then select position corresponding for R1 as complementary color position Put；

The present embodiment is designed to B1, and in tri-sub-pix blue datas of B2, B3, maximum is corresponding Position carry out complementary color.If b represents B1, maximum pair in tri-sub-pix blue datas of B2, B3 The position answered, if having more than one position is maximum simultaneously, then by these three sub-pix blueness number According to numbering sequencing (corresponding orientation priority) select complementary color position, such as B1=B2 and be Maximum in these three sub-pix blue data, then select position corresponding for B1 as complementary color position Put；

I () works as R, B component is required to complementary color

Then complementary color value size is:

G [i, j]=(G0+G0 [a]+G0 [b])/3

R [a]=(R0+R0 [a]+R0 [b])/3

B [b]=(B0+B0 [a]+B0 [b])/3

Then complementary color value size is:

G [i, j]=(G0+G0 [a])/2

R [a]=(R0+R0 [a])/2

Then complementary color value size is:

G [i, j]=(G0+G0 [b])/2

B [b]=(B0+B0 [b])/2

(3) odd-numbered line sub-pix blue data B [i, j] in Figure 10 is carried out complementary color process: divide Go out a block of pixels comprising B and at least one R being adjacent and at least one G, such as, scheme Nine grids block of pixels shown on the left of 11c, if the initial value of sub-pix blue data B [i, j] is B0 and set the original pixels [i, j] in the original image corresponding with sub-pix blue data B [i, j] Three primary colours data in non-Sample Color Data, namely red data and green data be respectively R0 And G0；For purposes of illustration only, the center sub-pix blue data in nine grids is labeled as on the left of Figure 11 c B0, three sub-pix green datas are respectively labeled as G1, G2, G3 according to default orientation priority And three sub-pix red datas are respectively labeled as R1, R2 according to default orientation priority, R3, shown on the right side of the result after labelling such as Figure 11 c.Then:

(3a) judge whether to need complementary color

(3b) complementary color position is determined

The present embodiment is designed to G1, and in tri-sub-pix green datas of G2, G3, maximum is corresponding Position carry out complementary color.If b represents G1, maximum pair in tri-sub-pix green datas of G2, G3 The position answered, if having more than one position is maximum simultaneously, then by these three sub-pix green number According to numbering sequencing (corresponding orientation priority) select complementary color position, such as G2=G3 and be Maximum in these three sub-pix green data, then select position corresponding for G2 as complementary color position Put；

I () is worked as R, G component and is required to complementary color

Then complementary color value size is:

B [i, j]=(B0+B0 [a]+B0 [b])/3

R [a]=(R0+R0 [a]+R0 [b])/3

G [b]=(G0+G0 [a]+G0 [b])/3

Then complementary color value size is:

B [i, j]=(B0+B0 [a])/2

R [a]=(R0+R0 [a])/2

Then complementary color value size is:

B [i, j]=(B0+B0 [b])/2

G [b]=(G0+G0 [b])/2

[even number line complementary color processing scheme]:

(4) even number line sub-pix red data R [i, j] in Figure 10 is carried out complementary color process: divide Go out a block of pixels comprising R and at least one B being adjacent and at least one G, such as, scheme Nine grids block of pixels shown on the left of 12a, if the initial value of sub-pix red data R [i, j] is R0 and set the original pixels [i, j] in the original image corresponding with sub-pix red data R [i, j] Three primary colours data in non-Sample Color Data, namely green data and blue data be respectively G0 And B0；For purposes of illustration only, the center sub-pix red data in nine grids is labeled as on the left of Figure 12 a R0, three sub-pix green datas are respectively labeled as G1, G2, G3 according to default orientation priority And three sub-pix blue datas are respectively labeled as B1, B2 according to default orientation priority, B3, shown on the right side of the result after labelling such as Figure 12 a.Then:

(4a) judge whether to need complementary color

(4b) complementary color position is determined

I () works as G, B component is required to complementary color

Then complementary color value size is:

R [i, j]=(R0+R0 [a]+R0 [b])/3

G [a]=(G0+G0 [a]+G0 [b])/3

B [b]=(B0+B0 [a]+B0 [b])/3

Then complementary color value size is:

R [i, j]=(R0+R0 [a])/2

G [a]=(G0+G0 [a])/2

Then complementary color value size is:

R [i, j]=(R0+R0 [b])/2

B [b]=(B0+B0 [b])/2

(5) even number line sub-pix green data G [i, j] in Figure 10 is carried out complementary color process: divide Go out a block of pixels comprising G1 and at least one R being adjacent and at least one B, such as, scheme Nine grids block of pixels shown on the left of 12b, if the initial value of sub-pix green data G [i, j] is G0 and set the original pixels [i, j] in the original image corresponding with sub-pix green data G [i, j] Three primary colours data in non-Sample Color Data, namely red data and blue data be respectively R0 And B0；For purposes of illustration only, the center sub-pix green data in nine grids is labeled as on the left of Figure 12 b G0, three sub-pix red datas are R1 according to default orientation priority flag, R2, R3, three Individual sub-pix blue data is respectively labeled as B1, B2, B3, labelling according to default orientation priority After result such as Figure 12 b on the right side of shown in.Then:

(5a) judge whether to need complementary color

(5b) complementary color position is determined

(5c) determine complementary color value size (namely complementary color process after sub-pix color data values size, or Claim updated value)

I () works as R, B component is required to complementary color

Then complementary color value size is:

G [i, j]=(G0+G0 [a]+G0 [b])/3

R [a]=(R0+R0 [a]+R0 [b])/3

B [b]=(B0+B0 [a]+B0 [b])/3

Then complementary color value size is:

G [i, j]=(G0+G0 [a])/2

R [a]=(R0+R0 [a])/2

Then complementary color value size is:

G [i, j]=(G0+G0 [b])/2

B [b]=(B0+B0 [b])/2

(6) even number line sub-pix blue data B [i, j] in Figure 10 is carried out complementary color process: divide Go out a block of pixels comprising B and at least one R being adjacent and at least one G, such as, scheme Nine grids block of pixels shown on the left of 12c, if the initial value of sub-pix blue data B [i, j] is B0 and set the original pixels [i, j] in the original image corresponding with sub-pix blue data B [i, j] Three primary colours data in non-Sample Color Data, namely red data and green data be respectively R0 And G0；For purposes of illustration only, the center sub-pix blue data in nine grids is labeled as on the left of Figure 12 c B0, three sub-pix green datas are respectively labeled as G1, G2, G3 according to default orientation priority And three sub-pix red datas are respectively labeled as R1, R2 according to default orientation priority, R3, shown on the right side of the result after labelling such as Figure 12 c.Then:

(6a) judge whether to need complementary color

(6b) complementary color position is determined

(6c) determine complementary color value size (namely complementary color process after sub-pix color data values size, or Claim updated value)

I () is worked as R, G component and is required to complementary color

Then complementary color value size is:

B [i, j]=(B0+B0 [a]+B0 [b])/3

R [a]=(R0+R0 [a]+R0 [b])/3

G [b]=(G0+G0 [a]+G0 [b])/3

Then complementary color value size is:

B [i, j]=(B0+B0 [a])/2

R [a]=(R0+R0 [a])/2

Then complementary color value size is:

B [i, j]=(B0+B0 [b])/2

G [b]=(G0+G0 [b])/2

Second embodiment of the invention is by each pixel (such as shown in Fig. 3) to display floater " red-green-blue " three sub-pix color data corresponding to sub-pix are carried out at above-mentioned complementary color The data obtained after reason are referred to Figure 10, simply compared to Figure 10 for, each sub-pix face Color data value is the updated value after complementary color processes；Afterwards, three sub-pixs in each pixel are exported After corresponding complementary color processes, sub-pix color data is addressed display.Refer to Fig. 3 and Figure 10, Described addressing display packing is: for tri-color physics of the RGB in the physical picture element P1 in Fig. 3 For sub-pix, then can be utilized respectively first sub-pix redness of the first row in Figure 10 (odd-numbered line) Data (R), first sub-pix green data (G) and first sub-pix of the second row (even number line) Blue data (B) is driven respectively；For tri-face of the BRG in the physical picture element P2 in Fig. 3 For color physics sub-pix, then can be utilized respectively first sub-picture of the first row in Figure 10 (odd-numbered line) Element blue data (B) and first sub-pix red data (R) of the second row (even number line), first Sub-pix green data (G) is driven respectively；The driving of other each physical picture elements by that analogy, Will not enumerate at this.

It addition, it is noted that the complementary color in above-mentioned first embodiment and the second embodiment processes Scheme is to use nine grids block of pixels (3 × 3 block of pixels) to illustrate as an example, and nine grids picture Element block is preferably by the center sub-pix number of colours processing target sub-pix color data as complementary color According to the surrounding being adjacent eight sub-pix color data composition, in which case, then to figure The first row of 8 and Figure 10 Central Asia pixel color data, first row, last column, last string are not Carry out complementary color process；Namely it is the first row in Fig. 8 and Figure 10, first row, last column, last Sub-pix color data on string carries out (that is, edge sub-pixel color data) not as complementary color Process target sub-pix color data.Certainly, in other circumstances, for example with 2 × 2 block of pixels, Triangular pixel block or not using target sub-pix color data as 3 × 3 block of pixels at center, then Edge sub-pixel color data can be processed target sub-pix color data as complementary color.Furthermore, It should be noted that each sub-pix color data in Fig. 8 and Figure 10 is carried out complementary color process, No matter whether edge sub-pixel color data is done complementary color and processed target sub-pix color data, it is Whole data value all will be referred to as sub-pix color data after complementary color processes.

Refer to Figure 13 a and Figure 13 b, its a kind of image procossing dress provided for the embodiment of the present invention The functional block diagram put.Specifically, as depicted in fig. 13 a, the image processing apparatus 130 of the present embodiment Be suitable to provide destination image data to show to carry out picture to display floater 100, described display floater 100 include multiple physical picture element (such as shown in Fig. 2 or Fig. 3), each described physical picture element bag Include the physics sub-pix of multiple different colours.Specifically, image processing apparatus 130 includes: sub-picture Element color data acquisition module 131 and complementary color processing module 133.

Wherein, sub-pix color data acquisition module 131 is used for obtaining because original image is carried out Asia Pixel down-sampling and obtain corresponding to multiple sub-pix number of colours of physical picture element each described According to, described original image includes multiple original pixels, and each described original pixels includes corresponding Multiple bases data.In the present embodiment, the RGB three primary colours data that multiple bases data are the most above-mentioned, It may also be more multiple bases data.

Complementary color processing module 133 is for the plurality of sub-pix color to the plurality of physical picture element Data carry out complementary color process and obtain corresponding to sub-after multiple complementary colors of physical picture element process each described Pixel color data is to generate described destination image data.Described complementary color processing module 133 is further Including: block of pixels divides submodule 1331 and complementary color processes submodule 1333.

Block of pixels divides submodule 1331 for carrying out any one target sub-pix color data Complementary color process time, mark off comprise described target sub-pix color data and with described target sub-pix The block of pixels of multiple sub-pix color data that color data is adjacent；Such as, block of pixels divides submodule Block 1331 is specifically for marking off 3 × 3 block of pixels, 2 × 2 block of pixels or triangle according to control instruction Shape block of pixels.

Complementary color processes submodule 1333 for based on the multiple pending sub-pix in described block of pixels Color data and the multiple original pixels the most corresponding with the plurality of pending sub-pix color data Multiple bases data in non-Sample Color Data judge whether to need carry out complementary color and enter at needs Complementary color position and complementary color value size, wherein said multiple pending sub-pix colors are determined during row complementary color Data include described target sub-pix color data and are different from described target sub-pix color data The sub-pix color data of color type.

As illustrated in fig. 13b, complementary color process submodule 1333 can also be refined as including: complementary color judges Unit 13330, complementary color position determination unit 13332 and complementary color value computing unit 13334.Wherein, Complementary color judging unit 13330 is for judging the original pixels that described target sub-pix color data is corresponding Multiple bases data in one specify non-Sample Color Data whether more than in described block of pixels the most all with The non-Sample Color Data of described appointment is the sub-pix color data of same color type, and is judging Result is to determine during "Yes" to need to carry out a color component complementary color, wherein said color component and institute State and specify the color type of non-Sample Color Data identical；Complementary color position determination unit 13332 is used for Determine the complementary color position of described color component；And complementary color value computing unit 13334 is used for calculating institute State the institute that the complementary color position of the updated value of target sub-pix color data and described color component is corresponding State the updated value of sub-pix color data in block of pixels.

Additionally, complementary color position determination unit 13332 can also be refined as including: based on brightness really Stator unit 13332a, based on determination of distance subelement 13332b and based on orientation priority Really stator unit 13332c.Wherein, it is used for obtaining based on brightness stator unit 13332a really All in described block of pixels is the sub-pix of same color type with the non-Sample Color Data of described appointment Maximum sub-pix color data in color data, and when the number of described maximum sub-pix color data When amount is one, determine that position corresponding to described maximum sub-pix color data is divided as described color The complementary color position of amount.Based on determination of distance subelement 13332b for when described maximum sub-pix face When the quantity of chromatic number evidence is multiple, obtain the position middle-range that described maximum sub-pix color data is corresponding From the minimum range sub-pix color data that described target sub-pix color data position is nearest, And when the quantity of described minimum range sub-pix color data is one, determine described minimum range Position corresponding to sub-pix color data is as the complementary color position of described color component.Excellent based on orientation First level stator unit 13332c really is for when the quantity of described minimum range sub-pix color data For time multiple, according to excellent relative to the pre-configured orientation of described target sub-pix color data position First level determines that the position of one of described minimum range sub-pix color data correspondence is as described color The complementary color position of component.

It is noted that the modules related in Figure 13 a and Figure 13 b, submodule, unit And the concrete function details of subelement see at acquisition and the complementary color of aforesaid sub-pix color data Reason process, does not repeats them here.

In sum, the above embodiment of the present invention uses specific sub-pix color data complementary color to process Algorithm carries out complementary color process to the sub-pix color data after sub-pix down-sampling, can be effectively improved Image resolution ratio and in the case of not affecting picture clarity eliminate sub-pix down-sampling technology draw The color mistake risen.

Specific case used herein is former to image processing method of the present invention and image processing apparatus Reason and embodiment are set forth, and the explanation of above example is only intended to help and understands the present invention Method and core concept；Simultaneously for one of ordinary skill in the art, according to the present invention Thought, the most all will change, in sum, this Description should not be construed as limitation of the present invention, and protection scope of the present invention should be with appended Claim is as the criterion.

Claims

1. an image processing method, for providing destination image data to carry out picture to display floater Face shows, described display floater includes multiple physical picture element, and each described physical picture element includes many The physics sub-pix of individual different colours；It is characterized in that, described image processing method includes step:

Obtain obtain because original image is carried out sub-pix down-sampling corresponding to thing each described Multiple sub-pix color data of reason pixel, described original image includes multiple original pixels, and each Individual described original pixels includes corresponding multiple bases data；

The plurality of sub-pix color data of the plurality of physical picture element carries out complementary color process and obtain Corresponding to sub-pix color data after multiple complementary colors of physical picture element process each described to generate institute State destination image data, wherein the plurality of sub-pix color data to the plurality of physical picture element Carry out complementary color process to include:

When any one target sub-pix color data is carried out complementary color process, mark off and comprise institute State target sub-pix color data and the multiple sub-pixs adjacent with described target sub-pix color data The block of pixels of color data based on the multiple pending sub-pix color data in described block of pixels And the multiple bases of the multiple original pixels the most corresponding with the plurality of pending sub-pix color data Non-Sample Color Data in data judges whether to need to carry out complementary color and when needs carry out complementary color Determine that complementary color position and complementary color value size, wherein said multiple pending sub-pix color data include Described target sub-pix color data and be different colours type with described target sub-pix color data Sub-pix color data.

2. image processing method as claimed in claim 1, it is characterised in that described block of pixels is 3 × 3 block of pixels, and adjacent with described target sub-pix color data in described 3 × 3 block of pixels The plurality of sub-pix color data include the color that is different from described target sub-pix color data At least two color type of type.

3. image processing method as claimed in claim 2, it is characterised in that described 3 × 3 pixels Block is centered by described target sub-pix color data.

4. image processing method as claimed in claim 1, it is characterised in that described block of pixels is 2 × 2 block of pixels, and adjacent with described target sub-pix color data in described 2 × 2 block of pixels The plurality of sub-pix color data include the color that is different from described target sub-pix color data At least two color type of type.

5. image processing method as claimed in claim 1, it is characterised in that described block of pixels is The color class of each sub-pix color data in triangular pixel block, and described triangular pixel block Type is different.

6. image processing method as claimed in claim 1, it is characterised in that each described thing Reason pixel includes a first color physics sub-pix of rectangular arrangement, a second color physics Sub-pix and two the 3rd color physics sub-pixs and said two the 3rd color physics sub-pix position On same diagonal.

7. image processing method as claimed in claim 6, it is characterised in that described first color Physics sub-pix is red physics sub-pix, and described second color physics sub-pix is that blue physics is sub- Pixel, said two the 3rd color physics sub-pix is two green physics sub-pixs.

8. image processing method as claimed in claim 1, it is characterised in that described in adjacent two The first physical picture element in physical picture element and the second physical picture element all include be triangularly arranged First color physics sub-pix, a second color physics sub-pix and a 3rd color physics are sub- Pixel；The described first color physics sub-pix of described first physical picture element and described second color thing Reason sub-pix and the described 3rd color physics sub-pix of described second physical picture element be positioned at same a line, And the described 3rd color physics sub-pix of described first physical picture element and described second physical picture element It is adjacent that described first color physics sub-pix and described second color physics sub-pix are respectively positioned on another OK.

9. image processing method as claimed in claim 1, it is characterised in that judge whether needs The method carrying out complementary color includes:

Judge in the multiple bases data of original pixels corresponding to described target sub-pix color data Non-Sample Color Data is the most all more than in described block of pixels is same with described non-Sample Color Data The sub-pix color data of one color type, and determine that when judged result is "Yes" needs are carried out One color component complementary color, wherein said color component and the color type of described non-Sample Color Data Identical.

10. image processing method as claimed in claim 1, it is characterised in that determine complementary color position The method put includes:

Obtain all in described block of pixels and that described non-Sample Color Data is same color type Asia Maximum sub-pix color data in pixel color data, and when described maximum sub-pix color data Quantity when being one, determine that position corresponding to described maximum sub-pix color data is as described face The complementary color position of colouring component；

When the quantity of described maximum sub-pix color data is multiple, obtain described maximum sub-pix In the position that color data is corresponding, target sub-pix color data position described in distance is nearest Small distance sub-pix color data, and when the quantity of described minimum range sub-pix color data is one Time individual, determine that position corresponding to described minimum range sub-pix color data is as described color component Complementary color position；And

When the quantity of described minimum range sub-pix color data is multiple, according to relative to described The pre-configured orientation priority of target sub-pix color data position determines described minimum range Asia picture One of element color data corresponding position is as the complementary color position of described color component.

11. image processing methods as claimed in claim 1, it is characterised in that determine complementary color value The method of size includes:

Described target sub-pix color data is updated to: at the beginning of described target sub-pix color data With described in the multiple bases data of the original pixels that initial value is the most corresponding with all complementary color positions determined Target sub-pix color data is the meansigma methods of the non-Sample Color Data of same color type；

Sub-pix color data corresponding for each described complementary color position is updated to: described complementary color position Put the initial value of sub-pix color data of correspondence, corresponding former of described target sub-pix color data Sub-pix color data corresponding with described complementary color position in the multiple bases data of beginning pixel is same face The original pixels that the non-Sample Color Data of color type is corresponding with other possible complementary color positions is many Sub-pix color data corresponding with described complementary color position in primary colours data be same color type not The meansigma methods of Sample Color Data.

12. 1 kinds of image processing apparatus, for providing destination image data to carry out to display floater Picture shows, described display floater includes multiple physical picture element, and each described physical picture element includes The physics sub-pix of multiple different colours；It is characterized in that, described image processing apparatus includes:

Sub-pix color data acquisition module, is used for obtaining and adopts under sub-pix because carrying out original image Sample and obtain corresponding to multiple sub-pix color data of physical picture element each described, described former Beginning image includes multiple original pixels, and each described original pixels includes corresponding multiple bases Data；

Complementary color processing module, for the plurality of sub-pix number of colours to the plurality of physical picture element Obtain corresponding to picture sub-after multiple complementary colors of physical picture element process each described according to carrying out complementary color process Element color data is to generate described destination image data；Described complementary color processing module includes:

Block of pixels divides submodule, for carrying out any one target sub-pix color data Complementary color process time, mark off comprise described target sub-pix color data and with described target sub-pix The block of pixels of multiple sub-pix color data that color data is adjacent；

Complementary color processes submodule, for based on the multiple pending sub-pix in described block of pixels Color data and the multiple original pixels the most corresponding with the plurality of pending sub-pix color data Multiple bases data in non-Sample Color Data judge whether to need carry out complementary color and enter at needs Complementary color position and complementary color value size, wherein said multiple pending sub-pix colors are determined during row complementary color Data include described target sub-pix color data and are different from described target sub-pix color data The sub-pix color data of color type.

13. image processing apparatus as claimed in claim 12, it is characterised in that described block of pixels Divide submodule for marking off 3 × 3 block of pixels, 2 × 2 block of pixels or triangle according to control instruction Shape block of pixels.

14. image processing apparatus as claimed in claim 12, it is characterised in that at described complementary color Reason submodule includes:

Complementary color judging unit, for judging the original pixels that described target sub-pix color data is corresponding Multiple bases data in the non-Sample Color Data of appointment whether more than all and institute in described block of pixels State the sub-pix color data specifying non-Sample Color Data to be same color type, and judge knot Determine and need to carry out a color component complementary color when fruit is for "Yes", wherein said color component and described The color type specifying non-Sample Color Data is identical；

Complementary color position determination unit, for determining the complementary color position of described color component；

Complementary color value computing unit, for calculate described target sub-pix color data updated value and The renewal of the sub-pix color data in the described block of pixels that the complementary color position of described color component is corresponding Value.

15. image processing apparatus as claimed in claim 14, it is characterised in that described complementary color position Put and determine that unit includes:

Based on brightness stator unit really, be used for obtaining in described block of pixels all with described appointment not Sample Color Data is the maximum sub-pix number of colours in the sub-pix color data of same color type According to, and when the quantity of described maximum sub-pix color data is one, determine described maximum sub-picture Position corresponding to element color data is as the complementary color position of described color component；

Based on determination of distance subelement, for when the quantity of described maximum sub-pix color data being Time multiple, obtain target Asia picture described in distance in the position that described maximum sub-pix color data is corresponding The minimum range sub-pix color data that element color data position is nearest, and when described narrow spacing From the quantity of sub-pix color data be one time, determine described minimum range sub-pix color data Corresponding position is as the complementary color position of described color component；

Based on orientation priority stator unit really, for when described minimum range sub-pix number of colours According to quantity be multiple time, pre-according to relative to described target sub-pix color data position If orientation priority determines the position conduct that one of described minimum range sub-pix color data is corresponding The complementary color position of described color component.