CN102158632A - Method and device for capturing CFA (color filter array) - Google Patents
Method and device for capturing CFA (color filter array) Download PDFInfo
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Abstract
The invention discloses a method for capturing a CFA (color filter array), which is used for realizing the better de-embedding property of CFA and avoiding the color cast problem in the imaging process. The method comprises the following steps: selecting a CFA base mode, wherein the corresponding CFA of the selected CFA base mode contains panchromatic pixel and two-color pixel; choosing pixel points, the number of which is less than a preset value, from the corresponding CFA of the selected CFA base mode; and replacing the color of the selected pixel points by the using of a third color different from the two colors, thereby acquiring the CFA. The invention also discloses a device which is used for realizing the method.
Description
Technical field
The present invention relates to optics and computer realm, particularly the acquisition methods of a kind of CFA and device.
Background technology
In order to reduce the registration error between cost, volume and the color, static Color Image Acquisition equipment, as CCD (Charge-coupled Device, charge coupled cell) has the monolithic sensor that the color filtering unit is embedded in CFA (Color Filter Array, color filtering array) together in the rest image digital camera usually.At each pixel place of image, transducer can only collect a kind of color, needs to obtain by interpolation the value of each pixel place three primary colors, and the interpolation process of this image is inlayed (demosaicking) process for separating.Except some CFA at random, two-dimentional CFA generally repeats to cover entire image sensor array surface by a minimum CFA pattern cycle and realizes.Structure and the performance difference of the CFA that obtains after the different minimum CFA mode combinations, therefore, a kind of minimum CFA pattern (hereinafter referred to as the CFA pattern) has also just been represented the feature of the CFA that obtains after should minimum CFA mode combinations.The CFA pattern is conciliate the design of method for embedding and is selected most important for the imaging of coloured image.
Most widely used CFA pattern is Bayer (Bayer) CFA pattern at present, and this BayerCFA pattern has adopted the pattern of 1/2 green, 1/4 redness and 1/4 blueness.Inlay performance though Bayer CFA pattern has to separate preferably, and separate that to inlay required software cost less, because it does not comprise panchromatic pixels, so photosensitive property is not good.In order to obtain the CFA of high photosensitivity energy, some new CFA patterns have appearred, for example the CFA pattern of CFA 2.0 again.These CFA patterns that include the high photosensitivity energy of panchromatic pixels all have some significant disadvantage: these CFA patterns are because of its unreasonable structure, or the color that comprises is too much, or the color that comprises is not three primary colors, therefore separate and inlay poor-performing, it is higher to separate the complexity of inlaying, or the hardware implementation cost height.And if the CFA pattern has only adopted two kinds of colors except panchromatic pixels, then separate the image of inlaying the back acquisition and colour cast may occur, have a strong impact on the image quality of camera.
Summary of the invention
The embodiment of the invention provides acquisition methods and the device of a kind of CFA, is used to realize the photosensitive property that CFA is higher and separate preferably and inlay performance, and can avoids colour cast problem in the image imaging process as far as possible.
The acquisition methods of a kind of color filtering array CFA may further comprise the steps:
Selected CFA basic mode formula wherein, comprises panchromatic pixels and two kinds of color pixel among the CFA of described selected CFA basic mode formula correspondence;
In the CFA of described selected CFA basic mode formula correspondence, select quantity to be no more than the pixel of set point;
Color with the third color except that described two kinds of colors is replaced selected pixel place obtains CFA.
A kind of formation method may further comprise the steps:
Carry out imaging with the imageing sensor that has described CFA, and obtain the CFA image;
The CFA image separated inlay;
With existing panchromatic pixels value in the described CFA image and three kinds of color pixel values each pixel place being separated three kinds of color values inlaying the back acquisition calibrates and revises.
The deriving means of a kind of CFA comprises:
Select module, be used for selected CFA basic mode formula, wherein, comprise panchromatic pixels and two kinds of color pixel among the CFA of described selected CFA basic mode formula correspondence, and in the CFA of described selected CFA basic mode formula correspondence, select quantity to be no more than the pixel of set point;
Processing module is used for the color that the third color except that described two kinds of colors is replaced the pixel place of described selection, obtains CFA.
A kind of imaging device comprises:
Operational module is used for the CFA image separated and inlays;
Correction module is used for the existing panchromatic pixels value of described CFA image and three kinds of color values each pixel place being separated three kinds of color values inlaying the back acquisition and calibrates and revise.
A kind of CFA comprises:
Panchromatic pixels, two kinds of colored pixels and the third colored pixels except that described panchromatic pixels and two kinds of colors;
The shared ratio of panchromatic pixels is about more than 1/2, and the shared ratio of other two kinds of colors all is about below 1/4;
The quantity of the pixel that described the third color is shared is no more than set point;
Described two kinds of colors are any two kinds of colors in three primary colors or the complementary color three primary colors, and described the third color is the color except that described two kinds of colors in three primary colors or the complementary color three primary colors.
The embodiment of the invention is selected CFA basic mode formula, wherein, comprises panchromatic pixels and two kinds of color pixel among the CFA of described CFA basic mode formula correspondence; In described CFA, select quantity to be no more than the pixel of set point; Color with the third color except that described two kinds of colors is replaced selected pixel place obtains required CFA.Because of panchromatic pixels is arranged among the CFA, so the photosensitive property of CFA is better; Because of except that panchromatic pixels, also having at least two kinds of colored pixels among the CFA, therefore can obtain coloured image; Therefore the ratio shared because of the third color is no more than set point, can think selected having well to separate separating of the CFA that inlays performance to inlay performance still good, and it is less that it separates the complexity of inlaying; Select quantity to be no more than the pixel of set point in described CFA, with the color that the third color is replaced selected pixel place, this third color can be used as the color reference, with the colour cast that occurs in calibration and the remedial frames imaging process.
Description of drawings
Fig. 1 is the main flow chart of the acquisition methods of CFA in the embodiment of the invention;
Fig. 2 is the main flow chart of formation method in the embodiment of the invention;
Fig. 3 A is the detail flowchart of the acquisition methods of CFA in the embodiment of the invention;
Fig. 3 B is the detail flowchart of formation method in the embodiment of the invention;
Fig. 4 is the primary structure figure of the deriving means of CFA in the embodiment of the invention;
Fig. 5 A is the schematic diagram of LRLB CFA basic mode formula in the embodiment of the invention;
Fig. 5 B is the schematic diagram of MWY CFA basic mode formula in the embodiment of the invention;
Fig. 5 C is the schematic diagram of a kind of general double-colored CFA basic mode formula in the embodiment of the invention;
Fig. 6 A is a schematic diagram of replacing CFA part after the color at pixel place of selection in the embodiment of the invention with the third color;
Fig. 6 B is a schematic diagram of replacing CFA part after the color at pixel place of selection in the embodiment of the invention with the third color;
Fig. 6 C is a schematic diagram of replacing CFA part after the color at pixel place of selection in the embodiment of the invention with the third color;
Fig. 7 is the primary structure figure of imaging device in the embodiment of the invention.
Embodiment
The embodiment of the invention is selected CFA basic mode formula, wherein, comprises panchromatic pixels and two kinds of colored pixels among the CFA of described CFA basic mode formula correspondence; In described CFA, select quantity to be no more than the pixel of set point; Color with the third color except that described two kinds of colors is replaced selected pixel place obtains required CFA.The panchromatic color that has comprised all visible spectrums that is meant, i.e. the secondary colour of all colours, and color is meant the color that only comprises a part of spectrum.Because of panchromatic pixels is arranged among the CFA, so the photosensitive property of CFA is better; Therefore the ratio shared because of the third color is no more than set point, can think that good the separating of selected CFA inlay performance and can keep, and it is less to separate the complexity of inlaying; Select quantity to be no more than the pixel of set point in described CFA, with the color that the third color is replaced selected pixel place, this third color can be used as the color reference, with the colour cast that occurs in calibration and the remedial frames imaging process.
Introduce the acquisition methods of CFA below by idiographic flow.
Referring to Fig. 1, the main method flow process that CFA obtains in the embodiment of the invention is as follows:
Step 101: selected CFA basic mode formula, wherein, described CFA basic mode formula comprises panchromatic pixels and two kinds of colored pixels.Obtain because of CFA repeats to cover entire image sensor array surface by a CFA pattern cycle, therefore when selecting CFA basic mode formula, only need from the CFA pattern, to select good the getting final product of performance.Preferable, comprising the panchromatic pixels that is not less than 1/2.
Step 102: in the CFA of described CFA basic mode formula correspondence, select quantity to be no more than the pixel of set point.This set point can be 2%, and promptly the quantity of the pixel of selecting in a CFA preferably is no more than 2% of pixel total quantity among this CFA.Wherein, in CFA, each pixel place is a panchromatic filter disc that visible light is not filtered or the filter disc of a monochrome.Because change color separating to inlay among the good CFA of performance, the structure of CFA is complicated, its separate inlay performance also can variation, and the pixel count of change is in described range of set value, make that the third colored pixels quantity that adds is few, therefore can not have influence on original the separating of CFA substantially inlays performance.Wherein, the selection mode of change pixel can be to select at random, also can select with pseudorandom method, perhaps selects with nonrandom method.Wherein, nonrandom method has quota method, formula computational methods and determination methods etc., is meant that mainly the people is for selecting.The color of the pixel of selecting can be with a kind of color, also can be different colours, also can be panchromatic pixels.
Step 103: the color of replacing selected pixel place with the third color except that described panchromatic pixels and two kinds of colors.Wherein, the third color be with the CFA basic mode formula of determining in two kinds of colors that color is all different, this the third color can be selected arbitrarily, but inlay performance in order to guarantee to separate, and reduce cost, this third color is preferably selected in the red, green, blue three primary colors in CFA in the color original two kinds of colors or three primary colors complementary color green grass or young crops, magenta, the yellow color original two kinds of colors in CFA.
Referring to Fig. 2, the main method flow process of imaging in the embodiment of the invention is as follows:
Step 201: carry out imaging with the imageing sensor that has described CFA, and obtain the CFA image.
Step 202: the CFA image separated inlay.Inlay algorithm and the CFA image that obtains is separated inlayed with separating.
Step 203: with existing panchromatic pixels value in the described CFA image and three kinds of color values each pixel place is separated three kinds of color values inlaying the back acquisition and calibrate and revise.To obtain bias colour or the less image of colour cast.For example, the CFA basic mode formula of selection is a LRLB CFA pattern, and wherein, the color at for example some pixels place is red, separate inlay after, the color at this pixel place can be represented by the red, green, blue three primary colors.Because of existing red in the LRLB CFA pattern, blue two kinds of colors, therefore by existing redness and the redness of separating after inlaying are compared, reach existing blueness and the blueness of separating after inlaying are compared, can know whether separate the redness and the blueness of inlaying the back acquisition has the colour cast phenomenon, and, in embodiments of the present invention, with removing panchromatic pixels, the third color outside two kinds of colors has substituted the color at the pixel place of selecting, preferable, this the third color can be selected green, then can and separate the green of inlaying the back acquisition and compare, whether the colour cast phenomenon be arranged to determine to separate the green of inlaying the back acquisition with this green.
Referring to Fig. 3 A, the detailed method flow process of obtaining CFA in the embodiment of the invention is as follows:
Step 3001: selected CFA basic mode formula.Select the CFA pattern to realize by selecting CFA basic mode formula.For example, the CFA basic mode formula of selection is a LRLB CFA pattern.
Step 3002: in the CFA of LRLB CFA basic mode formula correspondence, select quantity to be no more than the pixel of set point.For example, set point is 2%.
Step 3003: the color of replacing selected pixel place with the third color except that described panchromatic pixels and two kinds of colors among the selected CFA.For example, the third color is green.
Referring to Fig. 3 B, the detailed method flow process of imaging in the embodiment of the invention is as follows:
Step 3101: carry out imaging with the imageing sensor that has described CFA, to obtain the CFA image.
Step 3102: the CFA image separated inlay.
Step 3103: the value of three kinds of colors of existing red, green, blue in the CFA image is separated the value of inlaying the back three kinds of colors of red, green, blue that obtain with a pixel place respectively compare, judge whether unanimity.When judged result for not the time, continue step 307, otherwise continue step 308.The value of three kinds of colors of existing red, green, blue in the CFA image is compared with the value of separating three kinds of colors of red, green, blue of inlaying the back acquisition respectively.Comparison process can be: every kind of color all has a value, can know the value of this color according to color.For example redness is compared, judge whether the value separate existing redness in the value of inlaying the redness that the back obtains and the CFA image is consistent.
Step 3104: the color value that produces colour cast is revised.For example, the value of separating existing redness in the value of inlaying the redness that the back obtains at pixel place and the CFA image is inconsistent, determine that then this pixel place separates the redness of inlaying the back acquisition and the colour cast phenomenon occurred, can revise this value of separating the redness of inlaying the back acquisition according to the value of existing redness in the CFA image, make the error minimum between these two values.Preferable, the value that this pixel place can be separated the redness of inlaying the back acquisition is modified to identical with the value of existing redness among the CFA.
Step 3105: judge whether the pixel of not comparing.When judged result when being, continue step 3103, otherwise process ends.Guarantee all pixels have all been carried out comparison and correction, to obtain the higher image of quality.
Referring to Fig. 4, the deriving means of CFA comprises selection module 401 and processing module 402 in the embodiment of the invention.
Select module 401 to be used for selected CFA basic mode formula, wherein, comprise panchromatic pixels and two kinds of colored pixels among the CFA of described selected CFA basic mode formula correspondence, and in the CFA of described selected CFA basic mode formula correspondence, select quantity to be no more than the pixel of set point.Selected CFA basic mode formula can be the LRLB CFA pattern shown in Fig. 5 A, it comprises 1/2 panchromatic pixels, wherein, W represents panchromatic pixels, and R represents red pixel, and B represents blue pixel, the perhaps MWY CFA pattern shown in Fig. 5 B, it comprises 1/2 panchromatic pixels, and wherein, W represents panchromatic pixels, M represents pinkish red pixel, Y represents yellow pixel, perhaps all selected CFA basic mode formula can be expressed as the general double-colored CFA pattern shown in Fig. 5 C, wherein, W represents panchromatic pixels, F represents first kind of colored pixels, and S represents second kind of colored pixels, and F is required to be different colors with S.Preferable, separate the complexity of inlaying in order to reduce, F and S are in the three primary colors any two kinds in the embodiment of the invention, and for example, F and S are red and blue, and perhaps F and S be red and green, and perhaps F and S are blueness and green etc.Preferable, first kind of color F and second kind of shared ratio of color S can all be not more than 1/4, to make every effort to reach optimum efficiency.After the selected CFA basic mode formula, select module 401 to continue in the CFA of CFA basic mode formula correspondence, to select quantity to be no more than the pixel of set point.Select module 401 result after selecting can be carried out record, to guarantee change having taken place separating the color that to know which pixel when inlaying.
Processing module 402 is used for the color that the third color except that described panchromatic pixels and two kinds of colors is replaced selected pixel place, obtains required CFA.After selecting quantity to be no more than the pixel of set point among the CFA that selects module 401 determining, the third color of processing module 402 usefulness is replaced the color of selecting module 401 selected pixel places.For example, selected CFA basic mode formula is the WFS pattern, and the CFA pattern of the CFA correspondence after then replacing can perhaps can also be other form shown in Fig. 6 A, Fig. 6 B or Fig. 6 C.Wherein, W represents panchromatic pixels, F and S represent first kind of color and second kind of color respectively, T represents that processing module 402 is used for substituting the third color of somewhere color, the position of T can be to select at random, also can select with pseudorandom method, perhaps select with nonrandom method, the number of T is for being no more than set point.Be example all in the embodiment of the invention with the color of in a CFA of CFA basic mode formula correspondence, replacing a pixel place.
In with the embodiment of the invention, after the deriving means of CFA obtains CFA, can continue to carry out imaging operation, to obtain the image that photosensitivity is higher and colour cast is less according to the CFA that obtains.
Referring to Fig. 7, the embodiment of the invention also provides a kind of imaging device, and described device can comprise acquisition module 403, operational module 404 and correction module 405.The CFA that described device is used for obtaining according to the deriving means with CFA carries out imaging, to obtain bias colour or the less image of colour cast.
The imageing sensor that acquisition module 403 is used for having described CFA carries out imaging, to obtain the CFA image.
Correction module 405 is used for the existing panchromatic pixels value of CFA image and three kinds of color pixel values each pixel place being separated three kinds of colors of inlaying the back acquisition and calibrates and revise.The colour cast phenomenon occurred if determine to separate the color of inlaying the back acquisition after correction module 405 is compared, then revised separating the color of inlaying the back acquisition, made the error minimum between them according to existing panchromatic pixels value in the CFA image and three kinds of color pixel values.In separating mosaic process, because the CFA basic mode formula of selecting module 401 to select has two kinds of colors except that panchromatic pixels, and to separate when inlaying, the energy of a kind of color that each pixel place is obtained recovers tristimulus value.That is, no matter selected any CFA basic mode formula, which kind of color what no matter pixel place used is, separate inlay after, the color that obtains at each pixel place is all represented by the red, green, blue three primary colors.Correction module 405 can obtain the value of this color according to color.If the CFA basic mode formula of selecting is the MWYCFA pattern, then select module 401 can select cyan as the third color, after the CFA image of this MWY CFA basic mode formula correspondence is separated and is inlayed, the color at each pixel place also can be by red, green, blue three primary colors are represented, and it is pinkish red, yellow and cyan all is the complementary color of three primary colors, and can agonic mutual conversion between the three primary colors, correction module 405 can be with existing magenta, yellow and cyan all is converted to three primary colors, to separate again inlay color that the back obtains at each pixel place respectively with conversion after the color that obtains compare and revise, do not influence comparison result.
The embodiment of the invention is selected CFA basic mode formula, wherein, comprises panchromatic pixels and two kinds of colored pixels among the CFA of described CFA basic mode formula correspondence; In described CFA, select quantity to be no more than the pixel of set point; Color with the third color except that described two kinds of colors is replaced selected pixel place obtains required CFA.Because of panchromatic pixels is arranged among the CFA, so the photosensitive property of CFA is better; Therefore the ratio shared because of the third color is no more than set point, and it is less to think that selected CFA separates the complexity of inlaying; In described CFA, select quantity to be no more than the pixel of set point, replace the color at selected pixel place with the third color, separate the three primary colors that are of inlaying the back acquisition because of each pixel place, and the CFA that adds after the third color also has three kinds of colors, therefore in imaging process, can be with these three kinds of colors respectively as reference, calibrate and modified solutions is inlayed the color that the back obtains, the performance that influences camera to avoid the colour cast phenomenon occurring, thus obtain that photosensitivity is higher, colour cast is less, the quality better image.Three kinds of colors in the selected CFA basic mode formula except that panchromatic pixels can be three primary colors, so it is less to separate the complexity of inlaying; And only substitute the somewhere color with the third color in range of set value, this third color can be ignored in separating mosaic process, can not have influence on separating of CFA substantially and inlay performance.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (17)
1. the acquisition methods of a color filtering array CFA is characterized in that, may further comprise the steps:
Selected CFA basic mode formula wherein, comprises panchromatic pixels and two kinds of color pixel among described selected CFA basic mode formula and the corresponding CFA;
In the CFA of described selected CFA basic mode formula correspondence, select quantity to be no more than the pixel of set point;
Color with the third color except that described two kinds of colors is replaced the pixel place of described selection obtains CFA.
2. the method for claim 1 is characterized in that, the shared ratio of panchromatic pixels among the CFA of described CFA basic mode formula and correspondence is not less than 1/2; Two kinds of shared ratios of color all are not more than 1/4.
3. the method for claim 1 is characterized in that, described set point is 2%.
4. as claim 1 or 3 described methods, it is characterized in that the step of selecting quantity to be no more than the pixel of set point comprises: select quantity to be no more than the pixel of set point at random in described CFA in described CFA; Perhaps in described CFA, select quantity to be no more than the pixel of set point in pseudorandom mode; Perhaps in described CFA, select quantity to be no more than the pixel of set point in nonrandom mode.
5. the method for claim 1 is characterized in that, two kinds of colors among the described CFA are any two kinds of colors in any two kinds of colors in the red, green, blue three primary colors or three primary colors complementary color green grass or young crops, magenta, the yellow; Described the third color is the color except that described two kinds of colors in the color except that described two kinds of colors or the three primary colors complementary color in the three primary colors.
6. a formation method is characterized in that, may further comprise the steps:
Carry out imaging with the imageing sensor that has described CFA, and obtain the CFA image;
The CFA image separated inlay;
With existing panchromatic pixels value in the described CFA image and three kinds of color pixel values each pixel place being separated three kinds of color values inlaying the back acquisition calibrates and revises.
7. method as claimed in claim 6 is characterized in that, described CFA is the CFA that acquisition methods obtained according to CFA.
8. method as claimed in claim 6, it is characterized in that, with existing panchromatic and three kinds of colors in the described CFA image each pixel place is separated and to inlay the step that three kinds of colors that the back obtains calibrate and revise and comprise: the existing color value in all pixel places in the described CFA image is conciliate the value of inlaying this color that the back obtains compare, when comparison result is inconsistent, the color of separating the entire image after inlaying is revised according to the existing all colours value of CFA image.
9. the deriving means of a CFA is characterized in that, comprising:
Select module, be used for selected CFA basic mode formula, wherein, comprise panchromatic pixels and two kinds of color pixel among the CFA of described selected CFA basic mode formula correspondence, and in the CFA of described selected CFA basic mode formula correspondence, select quantity to be no more than the pixel of set point;
Processing module is used for the color that the third color except that described two kinds of colors is replaced the pixel place of described selection, obtains CFA.
10. device as claimed in claim 9 is characterized in that, the shared ratio of panchromatic pixels among the CFA of described CFA basic mode formula correspondence is not less than 1/2; The shared ratio of other two kinds of color pixel all is not more than 1/4.
11. device as claimed in claim 9 is characterized in that, described set point is 2%.
12. device as claimed in claim 9 is characterized in that, described selection module also is used for selecting quantity to be no more than the pixel of set point at random at described CFA; Perhaps in described CFA, select quantity to be no more than the pixel of set point in pseudorandom mode; Perhaps in described CFA, select quantity to be no more than the pixel of set point in nonrandom mode.
13. device as claimed in claim 9 is characterized in that, two kinds of colors among the described CFA are any two kinds of colors in any two kinds of colors in the red, green, blue three primary colors or three primary colors complementary color green grass or young crops, magenta, the yellow; Described the third color is the color except that described two kinds of colors in the color except that described two kinds of colors or the three primary colors complementary color in the three primary colors.
14. an imaging device is characterized in that, comprising:
Acquisition module carries out imaging with the imageing sensor that has described CFA, and obtains the CFA image;
Operational module is used for the CFA image separated and inlays;
Correction module is used for the existing panchromatic pixels value of described CFA and three kinds of color pixel values each pixel place being separated three kinds of color values inlaying the back acquisition and calibrates and revise.
15. device as claimed in claim 14 is characterized in that, described CFA is the CFA that acquisition methods obtained according to CFA.
16. device as claimed in claim 14, it is characterized in that, described correction module is used for that also the existing color value in all pixel places of described CFA image is conciliate this color value of inlaying the back acquisition and compares, when comparison result is inconsistent,, as reference the color of separating the entire image after inlaying is revised according to the existing color value of CFA image.
17. a CFA is characterized in that, comprising:
The filter disc of panchromatic pixels filter disc, two kinds of colors and the third color filter disc except that described panchromatic pixels filter disc and two kinds of color filter discs;
The shared ratio of panchromatic pixels filter disc is not less than 1/2, and the shared ratio of other two kinds of color filter discs all is not more than 1/4;
The quantity of the pixel that described the third color filter disc is shared is no more than set point;
Described two kinds of colors are any two kinds of colors in three primary colors or the three primary colors complementary color, and the third color is the color except that described two kinds of colors in three primary colors or the three primary colors complementary color.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455910A (en) * | 2000-07-18 | 2003-11-12 | 索尼电子有限公司 | Color cast detection and removal in digital images |
| CN101233762A (en) * | 2005-07-28 | 2008-07-30 | 伊斯曼柯达公司 | Image sensor with improved lightsensitivity |
| CN101455075A (en) * | 2005-10-13 | 2009-06-10 | Rjs科技公司 | System and method for a high performance color filter mosaic array |
-
2011
- 2011-04-08 CN CN 201110087810 patent/CN102158632B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455910A (en) * | 2000-07-18 | 2003-11-12 | 索尼电子有限公司 | Color cast detection and removal in digital images |
| CN101233762A (en) * | 2005-07-28 | 2008-07-30 | 伊斯曼柯达公司 | Image sensor with improved lightsensitivity |
| CN101455075A (en) * | 2005-10-13 | 2009-06-10 | Rjs科技公司 | System and method for a high performance color filter mosaic array |
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