CN102158632B - 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) have the color filtering unit in the rest image digital camera usually and be embedded in together CFA(Color Filter Array, color filtering array) monolithic sensor.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 that solution is inlayed (demosaicking) process.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 the Bayer(Bayer at present) the CFA pattern, this BayerCFA pattern has adopted the pattern of 1/2 green, 1/4 redness and 1/4 blueness.Though Bayer CFA pattern has preferably solution and inlays performance, and solution 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 CFA2.0 again.These CFA patterns that include the high photosensitivity energy of panchromatic pixels 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 solution is inlayed poor-performing, the complexity that solution is inlayed is higher, or the hardware implementation cost height.And if the CFA pattern has only adopted two kinds of colors except panchromatic pixels, colour cast may appear in the image that obtains after then solution is inlayed, and has 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, be used for to realize photosensitive property that CFA is higher and preferably solution inlay performance, and can avoid the 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 one-period property CFA pattern is as 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, described two kinds of colors 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;
Select quantity to be no more than 2% pixel in the CFA of described selected CFA basic mode formula correspondence, wherein, the pixel of described selection is for to select quantity to be no more than described 2% pixel in described CFA at random; Perhaps in described CFA, to select quantity to be no more than described 2% pixel in pseudorandom mode; Perhaps in described CFA, to select quantity to be no more than described 2% pixel in nonrandom mode;
The color of replacing selected pixel place with the third color except described two kinds of colors, obtain CFA, wherein, the color of the pixel of described selection is panchromatic pixels or two kinds of color pixel, and described the third color is the color except described two kinds of colors in the color except described two kinds of colors or the three primary colors complementary color in the three primary colors.
A kind of formation method may further comprise the steps:
Carry out imaging with the imageing sensor that has CFA as claimed in claim 1, and obtain the CFA image;
Described CFA image is carried out solution to be inlayed;
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 was inconsistent, the color of the entire image after according to the existing all colours value of CFA image solution being inlayed was revised.
The deriving means of a kind of CFA comprises:
Select module, be used for selected one-period property CFA pattern as 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, described two kinds of colors 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, and in the CFA of described selected CFA basic mode formula correspondence, select quantity to be no more than 2% pixel, wherein, the pixel of described selection is for to select quantity to be no more than described 2% pixel in described CFA at random; Perhaps in described CFA, to select quantity to be no more than described 2% pixel in pseudorandom mode; Perhaps in described CFA, to select quantity to be no more than described 2% pixel in nonrandom mode;
Processing module, be used for the color that the third color except described two kinds of colors is replaced the pixel place of described selection, obtain CFA, wherein, the color of the pixel of described selection is panchromatic pixels or two kinds of color pixel, and described the third color is the color except described two kinds of colors in the color except described two kinds of colors or the three primary colors complementary color in the three primary colors.
A kind of imaging device comprises:
Acquisition module carries out imaging with the imageing sensor that has CFA as claimed in claim 1, and obtains the CFA image;
Operational module is used for that described CFA image is carried out solution and inlays;
Correction module, be used for the value that this color of back acquisition is inlayed in the existing color value reconciliation in all pixel places of described CFA image is compared, when comparison result was inconsistent, the color of the entire image after according to the existing all colours value of CFA image solution being inlayed was revised.
A kind of CFA, described CFA is according to method generation according to claim 1, and described CFA comprises:
Panchromatic pixels, two kinds of colored pixels and the third colored pixels except 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 described two kinds of colors in three primary colors or the complementary color three primary colors;
Wherein, by using described the third filter disc to replace the filter disc of panchromatic pixels filter disc or two kinds of 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 described two kinds of colors is replaced selected pixel place obtains required CFA.Because panchromatic pixels is arranged among the CFA, so the photosensitive property of CFA is better; Because except 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 and have good solution and inlay the solution of the CFA of performance to inlay performance still good that the complexity that its solution is inlayed is less; 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 the 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 the 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 the 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 described two kinds of colors is replaced selected pixel place obtains required CFA.The panchromatic color that refers to comprise all visible spectrums, i.e. the secondary colour of all colours, and color refers to only comprise the color of a part of spectrum.Because 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 the good solution of selected CFA inlays performance and can keep, and the complexity that solution is inlayed is less; 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 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 namely 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.Change color because inlay among the good CFA of performance in solution, the structure of CFA is complicated, and its solution is inlayed 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 the original solution 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., refers to 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 described panchromatic pixels and two kinds of colors.Wherein, the third color be with the CFA basic mode formula of determining in the equal different color of two kinds of colors, this the third color can be selected arbitrarily, but inlay performance in order to guarantee solution, 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 is carried out solution inlay.Inlaying algorithm with solution carries out solution to the CFA image that obtains and inlays.
Step 203: with existing panchromatic pixels value in the described CFA image and three kinds of color values each pixel place solution is inlayed back three kinds of color values that obtain 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 LRLB CFA pattern, and wherein, for example the color at some pixels place is red, and after solution was inlayed, 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 compare by the redness after existing redness and solution are inlayed, and the blueness after existing blueness and solution inlayed is compared, can know whether the redness and the blueness that obtain after solution is inlayed have 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, the green that obtains after then can inlaying with solution with this green is compared, and to determine the green that obtains after solution is inlayed whether the colour cast phenomenon is arranged.
Referring to Fig. 3 A, the method detailed 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 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 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 method detailed 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 is carried out solution inlay.
Step 3103: the value of three kinds of colors of existing red, green, blue in the CFA image is compared with the value that a pixel place solution is inlayed three kinds of colors of red, green, blue that the back obtains respectively, 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 that solution is inlayed three kinds of colors of red, green, blue that the back obtains respectively.Comparison process can be: every kind of color has a value, can know the value of this color according to color.For example redness is compared, judge whether the value of existing redness in value that solution inlays 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 existing redness is inconsistent in the value of the redness that obtains at a pixel place after solution is inlayed and the CFA image, determine that then the colour cast phenomenon has appearred in the redness that obtains after this pixel place solution is inlayed, can revise according to the value that the value of existing redness in the CFA image is inlayed the redness of back acquisition to this solution, make the error minimum between these two values.Preferable, the value that this pixel place solution can be inlayed the redness of 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, in order to reduce the complexity that solution is inlayed, 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 the color that when solution is inlayed, can know which pixel change has taken place.
In with the embodiment of the invention, after the deriving means of CFA obtains CFA, can continue to carry out imaging operation according to the CFA that obtains, to obtain the image that photosensitivity is higher and colour cast is less.
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.
Correction module 405 is calibrated and is revised for three kinds of colors that obtain after with the existing panchromatic pixels value of CFA image and three kinds of color pixel values each pixel place solution being inlayed.Inlay the color that the back obtains and the colour cast phenomenon occurred if determine solution after correction module 405 comparison, then according to existing panchromatic pixels value in the CFA image and three kinds of color pixel values solution is inlayed the color that the back obtains and revise, make the error minimum between them.In separating mosaic process, because the CFA basic mode formula of selecting module 401 to select has two kinds of colors except panchromatic pixels, and solution is when inlaying, and 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, after solution was inlayed, the color that obtains at each pixel place was 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 MWY CFA pattern, then select module 401 can select cyan as the third color, after the CFA image solution of this MWY CFA basic mode formula correspondence 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, again solution is inlayed 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 described two kinds of colors is replaced selected pixel place obtains required CFA.Because 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 the complexity that selected CFA solution inlays is less; 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, inlay the three primary colors that are of back acquisition because of each pixel place solution, 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 revise solution and inlay 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 panchromatic pixels can be three primary colors, so the complexity that solution is inlayed is less; 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, and the solution that can not have influence on CFA is substantially inlayed 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 embodiment or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form of 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 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 and carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be 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 in the instruction that computer or other programmable devices are carried out.
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 (9)
1. the acquisition methods of a color filtering array CFA is characterized in that, may further comprise the steps:
Selected one-period property CFA pattern is as CFA basic mode formula, wherein, comprise panchromatic pixels and two kinds of color pixel among described selected CFA basic mode formula and the corresponding CFA, described two kinds of colors 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;
Select quantity to be no more than 2% pixel in the CFA of described selected CFA basic mode formula correspondence, wherein, the pixel of described selection is for to select quantity to be no more than described 2% pixel in described CFA at random; Perhaps in described CFA, to select quantity to be no more than described 2% pixel in pseudorandom mode; Perhaps in described CFA, to select quantity to be no more than described 2% pixel in nonrandom mode;
The color of replacing the pixel place of described selection with the third color except described two kinds of colors, obtain CFA, wherein, the color of selected pixel is panchromatic pixels or two kinds of color pixel, and described the third color is the color except described two kinds of colors in the color except described two kinds of colors or the three primary colors complementary color in the three primary colors.
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. a formation method is characterized in that, may further comprise the steps:
Carry out imaging with the imageing sensor that has CFA as claimed in claim 1, and obtain the CFA image;
The CFA image is carried out solution to be inlayed;
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 was inconsistent, the color of the entire image after according to the existing all colours value of CFA image solution being inlayed was revised.
4. method as claimed in claim 3 is characterized in that, the CFA that described CFA obtains for the acquisition methods according to CFA.
5. the deriving means of a CFA is characterized in that, comprising:
Select module, be used for selected one-period property CFA pattern as 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, described two kinds of colors 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, and in the CFA of described selected CFA basic mode formula correspondence, select quantity to be no more than 2% pixel, wherein, the pixel of described selection is for to select quantity to be no more than described 2% pixel in described CFA at random; Perhaps in described CFA, to select quantity to be no more than described 2% pixel in pseudorandom mode; Perhaps in described CFA, to select quantity to be no more than described 2% pixel in nonrandom mode;
Processing module, be used for the color that the third color except described two kinds of colors is replaced the pixel place of described selection, obtain CFA, wherein, the color of the pixel of described selection is panchromatic pixels or two kinds of color pixel, and described the third color is the color except described two kinds of colors in the color except described two kinds of colors or the three primary colors complementary color in the three primary colors.
6. device as claimed in claim 5 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.
7. an imaging device is characterized in that, comprising:
Acquisition module carries out imaging with the imageing sensor that has CFA as claimed in claim 1, and obtains the CFA image;
Operational module is used for that described CFA image is carried out solution and inlays;
Correction module, be used for the value that this color of back acquisition is inlayed in the existing color value reconciliation in all pixel places of described CFA image is compared, when comparison result was inconsistent, the color of the entire image after according to the existing all colours value of CFA image solution being inlayed was revised.
8. device as claimed in claim 7 is characterized in that, the CFA that described CFA obtains for the acquisition methods according to CFA.
9. CFA, described CFA generates according to method according to claim 1, it is characterized in that described CFA comprises:
The filter disc of panchromatic pixels filter disc, two kinds of colors and the third color filter disc except 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 described two kinds of colors in three primary colors or the three primary colors complementary color;
Wherein, by using described the third filter disc to replace the filter disc of panchromatic pixels filter disc or two kinds of colors.
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| 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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| CN102158632A (en) | 2011-08-17 |
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