CN100378511C - Image display color processing method - Google Patents
Image display color processing method Download PDFInfo
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- CN100378511C CN100378511C CNB2004100042180A CN200410004218A CN100378511C CN 100378511 C CN100378511 C CN 100378511C CN B2004100042180 A CNB2004100042180 A CN B2004100042180A CN 200410004218 A CN200410004218 A CN 200410004218A CN 100378511 C CN100378511 C CN 100378511C
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- image
- color
- pixel information
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Abstract
The present invention provides a method for processing image display colors. When the colors displayed by pixels are calculated, each pixel of even row and odd row in a pixel array of a display is displayed. A plurality of image pixels are referenced so as to provide more color information, and then the calculation result is displayed through the pixel array of the display. Thus, the present invention enables the display to display better image quality, and can effectively improve the problem of false color.
Description
Technical field
The disposal route of the relevant a kind of image display color of the present invention particularly about a kind of method of improving display image false colour, makes the color that shows more approach the colors of image of former input.
Background technology
Along with prevailing of audio-visual multimedia and releasing one after another of digital image apparatus, the user is healed to the requirement of colors of image and is become strict, the status of video display also becomes more and more important, and have Application Specific Integrated Circuit (application specific integrated circuit in usually in the video display, ASIC), to handle the input image data and to display it.
In LCD (LCD), the output of its chromatic image is to cooperate transparent electrode plate to be constituted by the many pixels (pixel) on the color filter (colorfilter), and forms image by pixel with the lightness of different colors.The pixel of LCD is generally the mutual arrangement of green, blue, red (G, B, a R) pixel of row and row blue, red, green (B, R, a G) pixel and forms arrayed.The information that includes R, G, three kinds of primary colors of B in the former input image, but after the image processing and interpolation calculating through ASIC, each pixel of LCD only can present wherein a kind of color of R, G or B, and can't in same pixel, present the information of three kinds of primary colors simultaneously, therefore in image, include lines or at image edge, because each pixel of lines or edge process only can present solid color, causes lines and image edge the problem of false colour (aliasing) to occur; In addition, when image amplifies,, also make the resolution variation and the distortion easily of image because each pixel only can present solid color.
Therefore how to make the color that shows more approach the colors of image of former input, real is a great problem.
Summary of the invention
In view of above-mentioned, the present invention proposes a kind of disposal route of image display color, makes the image display color comparatively accurate.
The disposal route of image display color of the present invention comprises the following steps:
The demonstration of display even column color information is according to M the Pixel Information of first kind of default computing method with reference to image to be shown, to obtain display even column pixel information value;
The demonstration of display odd column color information is according to N the Pixel Information of second kind of default computing method with reference to image to be shown, to obtain display odd column pixel information value, by this, increase the data source that display picture element shows, can make display demonstrate better image quality.
According to said method of the present invention, described first kind of computing method are averaging method.
According to said method of the present invention, described second kind of computing method are the weighted calculation method.
According to said method of the present invention, second kind of computing method of described first kind of computing method and this are identical.
According to said method of the present invention, described first kind of computing method and second kind of computing method all can be the weighted calculation method.
According to said method of the present invention, described first kind of computing method and second kind of computing method all can be averaging method.
According to said method of the present invention, described first method is an averaging method, and this second method is the weighted calculation method.
According to said method of the present invention, described first kind of computing method are with reference to 4 Pixel Information of image to be shown, and these 4 pixels are adjacent 2 row * 2 row pel arrays.
According to said method of the present invention, described second kind of computing method are with reference to 6 Pixel Information of image to be shown, and these 6 pixels are adjacent 2 row * 3 row pel arrays.
According to said method of the present invention, described first kind of computing method and second kind of computing method all can be low pass filtering method.
According to said method of the present invention, the color value of described image pixel is to be selected from one of them of group that red, green, blue forms.
According to said method of the present invention, described display is a LCD.
According to said method of the present invention, described display is an organic light emitting display.
According to said method of the present invention, described display picture element is that delta arranges.
The disposal route of image display color of the present invention makes interior each the color of pixel information of display from a plurality of image picture elements, and utilizing increases the colouring information source, to improve false colour problem of the prior art, makes the pixel of display present better image quality performance.
Description of drawings
Fig. 1 is the pel array synoptic diagram of the display of the present invention's application.
Fig. 2 contains the synoptic diagram of a plurality of image pixels for picked image file of the present invention.
Fig. 3 is overlapped in 1/2 intercept of image pixel virtual translation for the present invention the synoptic diagram of display picture element.
Fig. 4 is the partial schematic diagram of Fig. 3.
Fig. 5 is the partial schematic diagram of Fig. 3.
Embodiment
The disposal route of image display color of the present invention can be utilized hardware or software implementation, and the method makes the pel array in the display present preferable image quality performance.As shown in Figure 1, the display that the present invention uses is generally the display that de lta arranges, pel array 10 in it is made up of a plurality of pixels 12, and odd column (OK) pixel (the 1st, 3... row) and even column (OK) pixel (the 0th, 2... be listed as) relative translation 1/2 pixel intercept (pixel pitch) (in fact there is no this displacement) wherein.The disposal route of image display color of the present invention comprises the following steps: at first, as shown in Figure 2, capture a pending image file 20, this image file 20 is made up of a plurality of image pixels 22, and the color value of each image pixel 22 includes red (R), green (G) and blue (B) three compositions; Then with all image pixels 22 of this image file 20 toward the directions X of the pel array 10 of displays and 1/2 image pixel intercept of each translation of Y direction and overlapping, and then form as shown in Figure 3, make four corners overlapping (for convenience of description, in fact need not this displacement) of pixel 12 in the central point of image pixel 22 and the display picture element.So, in process image pixel 22 translations, 1/2 intercept after overlapping, is surrounded with four image pixels 22 around each pixel 12 in the even column of display pixel array 10; And be surrounded with six image pixels 22 around each pixel 14 in the odd column, make each pixel 12 of display utilize its image pixel 22 on every side to calculate color value, and the corresponding pixel 12 of result of calculation by this display presented.
Wherein, the step of the color value that calculating pixel 12 shows is as follows: please join shown in Figure 4, partial schematic diagram for Fig. 3, because four corners of each pixel 12 central points proper and four image pixels 22 around it are overlapping in the even column, so the color value of each pixel 12 is to utilize the same color value with four image pixels 22 in its four corner on average to calculate afterwards in the even column, for example the pixel 12 of display is the G pixel among the figure, therefore respectively capture its four corner A, B, C, the G composition of four image pixels 22 of D, the color calculation formula that can calculate out pixel 12 is:
G
Value=1/4 (A
G+ B
G+ C
G+ D
G) formula 1
In like manner, B in the even column and R color also are by this mode, and each captures it, and the B and the R of four image pixels 22 become to assign to obtain on every side.
Please consult shown in Figure 5 again, partial schematic diagram for Fig. 3, the pixel 14 of display is the R pixel, because pixel 14 is to be centered on by I, D, J, K, 6 institutes of G, L in the odd column, so the color value of pixel 14 utilizes and will on average calculate behind 6 acquisition R compositions around it in the odd column, its calculation formula is as follows:
R
Value=1/6 (I
R+ D
R+ J
R+ K
R+ G
R+ L
R) formula 2
Wherein, because only D and G are the central point of image pixel 24 in above-mentioned 6,4 of pixel 14 4 corners overlapping with the central point of image pixel 24, and 4 of the I in this four corner, J, K, L are just between two image pixels, 24 central points, so formula 2 further develops into again
R
value＝1/6[1/2(C
R+D
R)+D
R+1/2(D
R+E
R)+1/2(F
R+G
R)+G
R+1/2(G
R+H
R)]
R
Value=1/12 (C
R+ 4D
R+ E
R+ F
R+ 4G
R+ H
R) formula 3
In like manner, B in the odd column and G color also be nationality thus mode obtain.Therefore, each pixel 14 utilizes its required one-tenth of six image pixels, 24 acquisitions on every side to assign to calculate the value of color in the odd column.
According to the translation mode that above stated specification is given an example, will make above-mentioned formula 1 be applicable to even column, formula 3 is applicable to odd column.Same, if the translation mode difference will make above-mentioned formula 1 be applicable to odd column, formula 3 is applicable to even column, because account form is identical, and no longer explanation herein.
Aforementioned average or weighted calculation mode is carried out image treatment method of the present invention and is not limited thereto scope only for for example.For example, also can take low pass filtering method.Usage factor does not revolve integration (Convolution) for the shielding of negative value (Mask) to image; Or after an image carried out fourier transform, object edge or more violent partial reaction " HFS " (being index the greater) in fourier coefficient of shade of gray change, level and smooth part then is reflected at " low frequency part " (being the index smaller) in the fourier coefficient.Principle according to this, if will get the effect of low-pass filtering, its size that the coefficient of higher-frequency part can be decayed, even all be zero, can obtain the effect of low-pass filtering again to all conversion coefficient negate fourier transform of handling.
The present invention utilizes the disposal route of above-mentioned image display color, make interior each the color of pixel information of display from several image pixels, utilizing increases colouring information calculating source, make the pixel of display present better image quality performance, therefore in image, include lines or at image edge, can improve false colour problem of the prior art, and reach the effect that improves image resolution.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, all should be encompassed in protection scope of the present invention in.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (11)
1. the disposal route of an image display color, this disposal route comprises the following steps:
The demonstration of display even column color information is according to 4 Pixel Information of default averaging method with reference to image to be shown, to obtain display even column pixel information value;
The demonstration of display odd column color information is according to 6 Pixel Information of default averaging method with reference to image to be shown, to obtain display odd column pixel information value, by this, increase the data source that display picture element shows, can make display demonstrate better image quality.
2. the disposal route of an image display color comprises the following steps:
The demonstration of display even column color information is according to 4 Pixel Information of default weighted calculation method with reference to image to be shown, to obtain display even column pixel information value;
The demonstration of display odd column color information is according to 6 Pixel Information of default weighted calculation method with reference to image to be shown, to obtain display odd column pixel information value, by this, increase the data source that display picture element shows, can make display demonstrate better image quality.
3. the disposal route of an image display color comprises the following steps:
The demonstration of display even column color information is according to 4 Pixel Information of default averaging method with reference to image to be shown, to obtain display even column pixel information value;
The demonstration of display odd column color information is according to 6 Pixel Information of default weighted calculation method with reference to image to be shown, to obtain display odd column pixel information value, by this, increase the data source that display picture element shows, can make display demonstrate better image quality.
4. the disposal route of an image display color comprises the following steps:
The demonstration of display even column color information is according to 4 Pixel Information of default weighted calculation method with reference to image to be shown, to obtain display even column pixel information value;
The demonstration of display odd column color information is according to 6 Pixel Information of default averaging method with reference to image to be shown, to obtain display odd column pixel information value, by this, increase the data source that display picture element shows, can make display demonstrate better image quality.
5. the disposal route of an image display color comprises the following steps:
The demonstration of display even column color information is according to 4 Pixel Information of default low pass filtering method with reference to image to be shown, to obtain display even column pixel information value;
The demonstration of display odd column color information is according to 6 Pixel Information of default low pass filtering method with reference to image to be shown, to obtain display odd column pixel information value, by this, increase the data source that display picture element shows, can make display demonstrate better image quality.
6. as the disposal route of each described image display color of claim 1-5, it is characterized in that: 4 Pixel Information of described image to be shown are adjacent 2 row * 2 row pel arrays.
7. as the disposal route of each described image display color of claim 1-5, it is characterized in that: 6 Pixel Information of described image to be shown are adjacent 2 row * 3 row pel arrays.
8. as the disposal route of each described image display color of claim 1-5, it is characterized in that: the color value of described image pixel is to be selected from one of them of group that red, green, blue forms.
9. as the disposal route of each described image display color of claim 1-5, it is characterized in that: described display is a LCD.
10. as the disposal route of each described image display color of claim 1-5, it is characterized in that: described display is an organic light emitting display.
11. the disposal route as each described image display color of claim 1-5 is characterized in that: described display picture element is that delta arranges.
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|---|---|---|---|
| CNB2004100042180A CN100378511C (en) | 2004-02-10 | 2004-02-10 | Image display color processing method |
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|---|---|---|---|
| CNB2004100042180A CN100378511C (en) | 2004-02-10 | 2004-02-10 | Image display color processing method |
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| CN100378511C true CN100378511C (en) | 2008-04-02 |
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| CN101478687B (en) * | 2008-01-04 | 2010-12-08 | 华晶科技股份有限公司 | Correcting method for pseudo color pixel in digital image |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5341153A (en) * | 1988-06-13 | 1994-08-23 | International Business Machines Corporation | Method of and apparatus for displaying a multicolor image |
| US6384839B1 (en) * | 1999-09-21 | 2002-05-07 | Agfa Monotype Corporation | Method and apparatus for rendering sub-pixel anti-aliased graphics on stripe topology color displays |
| US20020140713A1 (en) * | 2001-03-27 | 2002-10-03 | Koninklijke Philips Electronics N.V. | Display device and method of displaying an image |
| CN1479272A (en) * | 2002-08-24 | 2004-03-03 | 三星电子株式会社 | Method and device for reconstructing colour image on triangle structure display |
-
2004
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5341153A (en) * | 1988-06-13 | 1994-08-23 | International Business Machines Corporation | Method of and apparatus for displaying a multicolor image |
| US6384839B1 (en) * | 1999-09-21 | 2002-05-07 | Agfa Monotype Corporation | Method and apparatus for rendering sub-pixel anti-aliased graphics on stripe topology color displays |
| US20020140713A1 (en) * | 2001-03-27 | 2002-10-03 | Koninklijke Philips Electronics N.V. | Display device and method of displaying an image |
| CN1479272A (en) * | 2002-08-24 | 2004-03-03 | 三星电子株式会社 | Method and device for reconstructing colour image on triangle structure display |
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