CN110298812A - A kind of method and device of image co-registration processing - Google Patents
A kind of method and device of image co-registration processing Download PDFInfo
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Abstract
This application discloses a kind of method and devices of image co-registration processing, this method comprises: obtaining the color image and black white image under Same Scene, and it is decomposed the color image to obtain characteristic parameter, and obtain corresponding second luminance component of the black white image, wherein, the characteristic parameter includes the first luminance component and the first color component；First luminance component is merged with second luminance component progress first time, obtains third luminance component；First color component is adjusted based on first luminance component and the third luminance component, obtains the second color component；The third luminance component and second color component are carried out second to merge, obtain fused image.Solves the second-rate technical problem of the image of fusion obtained in the prior art.
Description
Technical field
This application involves the method and devices that technical field of image processing more particularly to a kind of image co-registration are handled.
Background technique
Camera is widely used in daily life with the development of electronic technology, the imaging mode master of camera
It include: visual light imaging and infrared imaging, wherein visual light imaging is to form image using the principle of reflection of visible light,
Have many advantages, such as various colors nature, high resolution, still, when the external world does not have light source or weaker external light source light, obtains
Image it is second-rate；Infrared imaging is to form black white image using the Temperature Distribution of body surface.It is high-quality in order to obtain
The image of amount, usually it will be seen that the image that light is formed is merged with the image that infrared light is formed, to improve the quality of image.
At present, it will be seen that when light image and infrared light image carry out fusion treatment, mainly according to visible images and black
The brightness ratio of each pixel is adjusted the value of chromatism of pixel each in visible images in white image, is melted
The value of chromatism of each pixel in image after conjunction, then, by the brightness value of pixel each in black white image with it is fused
The value of chromatism of corresponding pixel points is merged in image, obtains fused image.Due in existing technology according to visible light
The brightness ratio of each pixel obtains the value of chromatism of each pixel in fused image in image and black white image, is easy
There is colouring information excessive tensile corresponding to partial pixel point, fused color of image is caused to be distorted, and what is obtained melt
The poor problem of picture quality after conjunction.
Summary of the invention
The application provides a kind of method and device of image co-registration processing, to solve after merging obtained in the prior art
The poor technical problem of picture quality.
In a first aspect, the embodiment of the present application provides a kind of method of image co-registration processing, this method comprises: electronic equipment obtains
The color image and black white image under Same Scene are taken, and the color image is decomposed to obtain characteristic parameter, and obtain
Take corresponding second luminance component of the black white image, wherein the characteristic parameter includes the first luminance component and the first color
Component；Then first luminance component is merged with second luminance component progress first time, obtains third luminance component；
First color component is adjusted based on first luminance component and the third luminance component again, obtains second
Color component；The third luminance component and second color component are finally carried out second to merge, obtained fused
Image.
In embodiment provided by the present application, after electronic equipment merges the luminance component of color image and black white image, root
The color component of color image is adjusted according to the luminance component and fused luminance component of color image, is merged
The color component of image afterwards, i.e., in the embodiment of the present application, after luminance component and fusion of the electronic equipment based on image before merging
The luminance component of image is adjusted the color component of color image, avoids fused luminance component to color component
Influence, improve the quality of fused image.
Optionally, it is decomposed the color image to obtain characteristic parameter, comprising:
Judge whether Color Channel and luminance channel are in data corresponding to each pixel in the color image
Discrete state；
If it is not, then the data are formatted, so that Color Channel and institute described in the data after conversion
It states luminance channel and is in discrete state；
Data corresponding to each pixel are decomposed, brightness corresponding to each pixel and face are obtained
Color information；
The brightness for extracting all pixels point in the color image obtains first luminance component, and extracts the coloured silk
The colouring information of all pixels point obtains first color component in chromatic graph picture.
Optionally, first luminance component is merged with second luminance component progress first time, it is bright obtains third
Spend component, comprising:
By identical bits in brightness corresponding to each pixel in first luminance component and second luminance component
It sets brightness corresponding to pixel to be merged, obtains fused brightness corresponding to each same position pixel；
The third brightness is obtained based on fused brightness corresponding to all pixels point in first luminance component
Component.
Optionally, first color component is carried out based on first luminance component and the third luminance component
Adjustment, obtains the second color component, comprising:
Remove the noise in first luminance component and the third luminance component；
By brightness corresponding to each pixel in first luminance component after denoising and the third after denoising
The brightness of same position pixel is compared in luminance component, obtains stretching system corresponding to each same position pixel
Number；
Based on drawing coefficient corresponding to each pixel in first luminance component to it in first color point
Colouring information in amount is adjusted, and obtains second color component.
In scheme provided by the embodiments of the present application, the noise in the first luminance component and third luminance component is removed, will be gone
The first luminance component after making an uproar is compared with the brightness of same position in the third luminance component after denoising, is obtained each identical
Drawing coefficient corresponding to the pixel of position is then based on drawing coefficient corresponding to each pixel and adjusts to colouring information
It is whole.Therefore, the scheme of the embodiment of the present application is avoided by noise jamming in the first luminance component of removal and third luminance component
The problem of colouring information corresponding to partial pixel point excessively adjusted, fused color of image is caused to be distorted.
Optionally, the noise in first luminance component and the third luminance component is removed, comprising:
First luminance component and the third luminance component are filtered based on Image filter arithmetic；With/
Or
Based on preset sampling window respectively by the brightness in first luminance component and the third luminance component
Carry out down-sampling processing.
Optionally, based on drawing coefficient corresponding to each pixel in first luminance component to it described first
Colouring information in color component is adjusted, before obtaining second color component, further includes:
Based on relationship preset between brightness and the threshold value of drawing coefficient, each pixel in first luminance component is determined
The threshold value of the corresponding drawing coefficient of point；
Judge that whether there is drawing coefficient corresponding to any pixel point in first luminance component is greater than corresponding to it
Drawing coefficient threshold value；
If it exists, then by the threshold of the adjustment and the drawing coefficient corresponding to it of drawing coefficient corresponding to any pixel point
It is worth identical.
In scheme provided by the embodiments of the present application, based on relationship preset between brightness and the threshold value of drawing coefficient, determine
In first luminance component drawing coefficient corresponding to any pixel point be more than its corresponding to threshold value when, by any pixel point
Corresponding drawing coefficient adjustment with its corresponding to threshold value it is identical, avoid the drawing coefficient mistake as corresponding to any pixel point
Greatly, the problem of colouring information corresponding to the pixel excessively being adjusted, fused color of image is caused to be distorted.
Optionally, if based on preset sampling window respectively by first luminance component and the third luminance component
In brightness carry out down-sampling processing, by drawing coefficient corresponding to any pixel point adjustment with its corresponding to stretching system
After several threshold values is identical, further includes:
Drawing coefficient adjusted corresponding to each pixel in first luminance component is subjected to up-sampling treatment,
Obtain drawing coefficient corresponding to each pixel in first luminance component.
Optionally, based on drawing coefficient corresponding to each pixel in first luminance component to it described first
Colouring information in color component is adjusted, and obtains second color component, comprising:
Saturation based on brightness and each pixel corresponding after pixel each in color image denoising
Preset relation between degree and brightness, determines saturation degree corresponding to each pixel；
Based on drawing coefficient corresponding to each pixel and the saturation degree to the face of each pixel
Color information is adjusted, and obtains second color component.
In scheme provided by the embodiments of the present application, based on brightness corresponding after pixel each in color image denoising
And the preset relation between the saturation degree and brightness of each pixel determines saturation degree corresponding to each pixel, and is based on
The saturation degree of each pixel and corresponding drawing coefficient are adjusted colouring information, avoid the color image all
Pixel is all adjusted colouring information corresponding to each pixel using same saturation degree, leads to partial pixel point institute
Corresponding cross-color.
Optionally, based on corresponding brightness and each pixel after pixel each in color image denoising
Saturation degree and brightness between preset relation, determine saturation degree corresponding to each pixel, comprising:
Determine the first difference between preset dark space saturation degree and preset clear zone saturation degree, the minimum of brightness in clear zone
Brightness in the second difference and the clear zone in value and the third luminance component between brightness corresponding to each pixel
Minimum value and dark space brightness maximum value between third difference；
The first ratio between second difference and the third difference is determined based on preset cutted function, and really
The first product between fixed first ratio and first difference；
First product is added with the preset clear zone saturation degree, obtains satisfying corresponding to each pixel
And degree.
Optionally, based on drawing coefficient corresponding to each pixel and the saturation degree to each pixel
The colouring information of point is adjusted, comprising:
Determine the brightness value and the first corresponding luminance component of third luminance component corresponding to each pixel
Brightness value between the second ratio, and using second ratio as the drawing coefficient；
It determines the second product between the drawing coefficient and the saturation degree, and determines that each pixel institute is right
The 4th difference between the colouring information and preset value of the first color component answered；
Second product is multiplied with the 4th difference, obtains each pixel colouring information adjusted.
Second aspect, a kind of device of image co-registration processing provided by the embodiments of the present application, the device, comprising:
Decomposition unit is carried out for obtaining color image and black white image under Same Scene, and by the color image
Decomposition obtains characteristic parameter, and obtains corresponding second luminance component of the black white image, wherein the characteristic parameter includes
First luminance component and the first color component；
First integrated unit, for first luminance component to be merged with second luminance component progress first time,
Obtain third luminance component；
Processing unit, for being divided based on first luminance component and the third luminance component first color
Amount is adjusted, and obtains the second color component；
Second integrated unit is merged for the third luminance component and second color component to be carried out second,
Obtain fused image.
Optionally, the decomposition unit, is specifically used for:
Judge whether Color Channel and luminance channel are in data corresponding to each pixel in the color image
Discrete state；
If Color Channel and luminance channel are not in discrete state in the data, the data are subjected to format and are turned
It changes, so that Color Channel described in the data after conversion and the luminance channel are in discrete state；
Data corresponding to each pixel are decomposed, brightness corresponding to each pixel and face are obtained
Color information；
The brightness for extracting all pixels point in the color image obtains first luminance component, and extracts the coloured silk
The colouring information of all pixels point obtains first color component in chromatic graph picture.
Optionally, first integrated unit, is specifically used for:
By identical bits in brightness corresponding to each pixel in first luminance component and second luminance component
It sets brightness corresponding to pixel to be merged, obtains fused brightness corresponding to each same position pixel；
The third brightness is obtained based on fused brightness corresponding to all pixels point in first luminance component
Component.
Optionally, the processing unit includes: denoising unit, comparing unit and adjustment unit；
The denoising unit, for removing the noise in first luminance component and the third luminance component；
The comparing unit, for brightness corresponding to each pixel in first luminance component after denoising with
The brightness of same position pixel is compared in the third luminance component after denoising, obtains each same position pixel
Corresponding drawing coefficient；
The adjustment unit, for based on drawing coefficient corresponding to each pixel in first luminance component to it
Colouring information in first color component is adjusted, and obtains second color component.
Optionally, the denoising unit, is specifically used for:
First luminance component and the third luminance component are filtered based on Image filter arithmetic；With/
Or
Based on preset sampling window respectively by the brightness in first luminance component and the third luminance component
Carry out down-sampling processing.
Optionally, described device further include: determination unit and judging unit；
The determination unit, for determining described first based on relationship preset between brightness and the threshold value of drawing coefficient
The threshold value of drawing coefficient corresponding to each pixel in luminance component；
The judging unit, for judging in first luminance component with the presence or absence of stretching corresponding to any pixel point
Coefficient is greater than the threshold value of the drawing coefficient corresponding to it；
The processing unit is also used to drawing coefficient corresponding to any pixel point if it exists greater than the stretching corresponding to it
The threshold value of coefficient, then by drawing coefficient corresponding to any pixel point adjust with its corresponding to drawing coefficient threshold value phase
Together.
Optionally, the processing unit, is also used to:
Drawing coefficient adjusted corresponding to each pixel in first luminance component is subjected to up-sampling treatment,
Obtain drawing coefficient corresponding to each pixel in first luminance component.
Optionally, the determination unit is also used to based on corresponding after pixel denoising each in the color image
Brightness and each pixel saturation degree and brightness between preset relation, determine corresponding to each pixel satisfy
And degree；
The processing unit, specifically for based on drawing coefficient corresponding to each pixel and the saturation degree
The colouring information of each pixel is adjusted, second color component is obtained.
Optionally, the determination unit, is specifically used for:
Determine the first difference between preset dark space saturation degree and preset clear zone saturation degree, the minimum of brightness in clear zone
Brightness in the second difference and the clear zone in value and the third luminance component between brightness corresponding to each pixel
Minimum value and dark space brightness maximum value between third difference；
The first ratio between second difference and the third difference is determined based on preset cutted function, and really
The first product between fixed first ratio and first difference；
First product is added with the preset clear zone saturation degree, obtains satisfying corresponding to each pixel
And degree.
Optionally, the processing unit, is specifically used for:
Determine the brightness value and the first corresponding luminance component of third luminance component corresponding to each pixel
Brightness value between the second ratio, and using second ratio as the drawing coefficient；
It determines the second product between the drawing coefficient and the saturation degree, and determines that each pixel institute is right
The 4th difference between the colouring information and preset value of the first color component answered；
Second product is multiplied with the 4th difference, obtains each pixel colouring information adjusted.
The third aspect, the application provide a kind of electronic equipment, the electronic equipment, comprising:
Memory, for storing instruction performed by least one processor；
Processor, for executing method described in the instruction execution first aspect stored in memory.
Fourth aspect, the application provide a kind of computer readable storage medium, the computer-readable recording medium storage
There is computer instruction, when the computer instruction is run on computers, so that computer executes side described in first aspect
Method.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the method for image co-registration processing provided by the embodiment of the present application；
Fig. 2 is any position view for facing pixel in a kind of color image provided by the embodiment of the present application；
Fig. 3 is a kind of structural schematic diagram of the device of image co-registration processing provided by the embodiment of the present application；
Fig. 4 is a kind of structural schematic diagram of processing unit provided by the embodiment of the present application；
Fig. 5 is a kind of structural schematic diagram of the device of image co-registration processing provided by the embodiment of the present application；
Fig. 6 is the structural schematic diagram of a kind of electronic equipment provided by the embodiment of the present application.
Specific embodiment
The application provides a kind of method and device of image co-registration processing, to fused figure obtained in the prior art
As second-rate technical problem.
Technical solution in the embodiment of the present application is in order to solve the above technical problems, summary thinking is as follows:
In the technical solution of the embodiment of the present application, color image can be decomposed to obtain the first luminance component and
One color component, and corresponding second luminance component of black white image is obtained, then by the first luminance component and the second brightness point
Amount carries out first time fusion, obtains third luminance component, then based on the first luminance component and third luminance component to the first face
Colouring component is adjusted, and obtains the second color component, is finally melted third luminance component and the second color component for the second time
It closes, obtains fused image.It is possible thereby to by the luminance component of fused luminance component and color image come to colour
The color component of image is adjusted, and is avoided influence of the fused luminance component to color component, is improved fused
The quality of image.
In scheme provided by the embodiments of the present application, described embodiment is only some embodiments of the present application, rather than
Whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Under all other embodiment obtained, shall fall in the protection scope of this application.
In order to better understand the above technical scheme, below by attached drawing and specific embodiment to technical scheme
It is described in detail, it should be understood that the specific features in the embodiment of the present application and embodiment are to the detailed of technical scheme
Thin explanation, rather than the restriction to technical scheme, in the absence of conflict, the embodiment of the present application and embodiment
In technical characteristic can be combined with each other.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, herein
Middle character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".
The method handled below in conjunction with Figure of description a kind of image co-registration provided by the embodiment of the present application is done into one
Step detailed description, this method specific implementation may comprise steps of (method flow is as shown in Figure 1):
Step 101, electronic equipment obtain Same Scene under color image and black white image, and by the color image into
Row, which decomposes, obtains characteristic parameter, and obtains corresponding second luminance component of the black white image, wherein the characteristic parameter packet
Include the first luminance component and the first color component.
Color image and black white image under the Same Scene that electronic equipment obtains should have equal number of pixel,
After obtaining the color image and black white image under Same Scene, need to obtain spy corresponding to each pixel in color image
Parameter is levied, for example, luminance component and color component, it is also necessary to obtain brightness corresponding to each pixel point in black white image
Amount.
During image processing in color image there are many data formats corresponding to each pixel, wherein some numbers
Discrete state is according to Color Channel in format and luminance channel, wherein Color Channel includes colouring information, and colouring information includes
Coloration, tone or saturation degree, luminance channel include luminance information, for example, data format includes: YUV, HSV etc., and some are counted
It is not discrete state according to luminance channel in format and Color Channel, for example, data format includes RGB, printing color mode
((Cyan, Magenta, Yellow, Black), CMYK) etc..Therefore, electronic equipment each picture in obtaining the color image
During characteristic parameter corresponding to vegetarian refreshments, it is thus necessary to determine that the data format of pixel in color image.If the number of pixel
When not separating according to format mismatching or Color Channel and luminance channel, then the data format of pixel in color image is subjected to lattice
Formula conversion, so that obtaining required characteristic parameter.
Further, the characteristic parameter that the technical solution as provided by the embodiment of the present application is related to includes luminance component and face
Therefore colouring component is decomposed color image to obtain characteristic parameter, comprising: judge that each pixel institute is right in color image
Whether Color Channel and luminance channel are in discrete state in the data answered；If Color Channel and luminance channel are not places in data
In discrete state, then data are formatted, so that Color Channel and luminance channel are in point in the data after conversion
From state；Data corresponding to each pixel are decomposed, brightness corresponding to each pixel and color letter are obtained
Breath；The brightness for extracting all pixels point in color image obtains the first luminance component, and extracts all pixels in color image
The colouring information of point obtains the first color component.
Specifically, electronic equipment is first sentenced before being decomposed data corresponding to pixel each in color image
Whether Color Channel and luminance channel are in discrete state in data corresponding to each pixel in disconnected color image, if not
It is, then according to the transformational relation between preset data format, to access the value of each data component pixel-by-pixel in color image,
Its luminance channel and Color Channel are separated, then, data corresponding to each pixel after conversion are decomposed,
Brightness corresponding to each pixel and colouring information are obtained, then is obtained based on brightness corresponding to all pixels point in color image
To the first luminance component, the first color component is obtained based on colouring information corresponding to all pixels point in color image.If packet
Containing colouring information and/or brightness, then directly the corresponding data of each pixel are decomposed, obtains the first luminance component and
One color component.
In the implementation procedure of this step, since black white image only has luminance component, electronic equipment is obtaining artwork master
As after, data corresponding to each pixel of acquisition, brightness corresponding to as each pixel is then based on all pictures
Brightness corresponding to vegetarian refreshments obtains the second luminance component.
Step 102, electronic equipment merges first luminance component with second luminance component progress first time, obtains
To third luminance component.
Specifically, electronic equipment is after obtaining the first luminance component and the second luminance component, it will be in the first luminance component
Brightness corresponding to each pixel is merged with brightness corresponding to same position pixel in the second luminance component, is obtained
Fused brightness corresponding to each same position pixel, wherein will be corresponding to pixel each in the first luminance component
The mode that is merged with brightness corresponding to same position pixel in the second luminance component of brightness there are many, below with two
Preferable mode is planted to be illustrated:
Mode 1 will carry out wavelet decomposition in first luminance component and the second luminance component, high harmonic component be obtained, by low frequency
Component is merged according to Weighted Average Algorithm, and high fdrequency component is merged according to maximum absolute value method, obtains fused
Three luminance components.
Mode 2 defines in the first luminance component and the second luminance component corresponding to the luminance component of each pixel
Weighted value, based on weighted value corresponding to each pixel by the picture of same position in the first luminance component and third luminance component
Brightness corresponding to vegetarian refreshments is weighted and averaged, and obtains fused luminance component corresponding to each same pixel point, then,
Fused third luminance component is obtained based on fused luminance component corresponding to all pixels point.
Then, electronic equipment obtains third based on fused brightness corresponding to all pixels point in the first luminance component
Luminance component.
Step 103, electronic equipment is based on first luminance component and the third luminance component to first face
Colouring component is adjusted, and obtains the second color component.
Electronic equipment is after obtaining fused third luminance component, based on the first luminance component and third brightness point
Amount is adjusted the first color component, obtains the second color component, comprising: the first luminance component of removal and third brightness point
Noise in amount；By brightness corresponding to each pixel in the first luminance component after denoising and the third brightness after denoising point
The brightness of same position pixel is compared in amount, obtains drawing coefficient corresponding to each same position pixel；It is based on
Drawing coefficient corresponding to each pixel adjusts its colouring information in the first color component in first luminance component
It is whole, obtain the second color component.
Specifically, leading to the first luminance component and third brightness in order to avoid there are noise jammings between neighbor pixel
Brightness corresponding to the pixel of part can mutate in component, and then influence the color of fused image.Need to remove
Noise component(s) in one luminance component and third luminance component, there are many specific modes for removing noise component(s), below with several
The preferable denoising mode of kind is illustrated.
Mode 1, electronic equipment are based on Image filter arithmetic and are filtered place to the first luminance component and third luminance component
Reason, for example, Image filter arithmetic includes mean filter, median filtering or gaussian filtering etc..
Mode 2, electronic equipment respectively will be in the first luminance components and third luminance component based on preset sampling window
Brightness carry out down-sampling processing.It should be understood that electronic equipment carries out down-sampling to the first luminance component and to third luminance component
Window it is identical；Electronic equipment can be based on preset sampling window to bright in the first luminance component and third luminance component
Degree carries out down-sampling at least once and handles, and the preset sampling window of each down-sampling processing may be the same or different,
This is with no restrictions.
Mode 3, electronic equipment are primarily based on Image filter arithmetic and filter to the first luminance component and third luminance component
Wave processing, then adopt by the brightness in the first luminance component and third luminance component respectively based on preset sampling window
Sample processing.
Then, electronic equipment is after denoising the first luminance component and third luminance component, by after denoising
The brightness of brightness corresponding to each pixel and corresponding pixel in the third luminance component after denoising in one luminance component
It is compared, obtains drawing coefficient corresponding to each pixel, based on drawing coefficient to color corresponding to each pixel
Information is adjusted, and obtains the second colouring information.
Specifically, drawing coefficient corresponding to brightness of the electronic equipment based on each pixel in the first luminance component is to
Colouring information corresponding to each pixel is adjusted in one color component, obtains the second color component, comprising:
Saturation degree based on brightness and each pixel corresponding after pixel each in color image denoising with
Preset relation between brightness determines saturation degree corresponding to each pixel；
The colouring information of drawing coefficient corresponding to brightness based on each pixel and saturation degree to each pixel
It is adjusted, obtains the second color component.
Specifically, electronic equipment determines the first difference between preset dark space saturation degree and preset clear zone saturation degree,
The second difference in clear zone in the minimum value of brightness and the third luminance component between brightness corresponding to each pixel, with
And the third difference in the clear zone between the minimum value of brightness and the maximum value of dark space brightness；Then, it is based on preset interception
Function determines the first ratio between second difference and the third difference, and determines first ratio and described the
The first product between one difference；First product is added with the preset clear zone saturation degree again, is obtained described each
Saturation degree corresponding to pixel.
I.e. electronic equipment can obtain according to the following formula saturation degree corresponding to each pixel:
Wherein, sat indicates saturation degree corresponding to each pixel；Sat_bright indicates preset clear zone saturation degree；
Sat_dark indicates preset dark space saturation degree；Bright_th indicates the minimum value of brightness in clear zone；Dark_th indicates dark space
The maximum value of brightness；Y_vis indicates brightness corresponding to any pixel point in third luminance component, and clip () is cutted function.
Further, electronic equipment determines that each pixel institute is right after determining saturation degree corresponding to each pixel
The second ratio between the brightness value for the third luminance component answered and the brightness value of the first corresponding luminance component, and by second
Ratio is as drawing coefficient；Then, it is determined that the second product between drawing coefficient and saturation degree, and determine each pixel institute
The 4th difference between the colouring information and preset value of corresponding first color component；The second product and the 4th difference are carried out again
It is multiplied, obtains each pixel colouring information adjusted.
I.e. electronic equipment can according to the following formula be adjusted the colouring information to each pixel:
Wherein, u indicates colouring information corresponding to any pixel point in the second color component；yvIndicate third luminance component
The corresponding brightness of middle any pixel point, yfIndicate brightness corresponding to any pixel point in the first luminance component；U ' indicates first
Colouring information corresponding to any pixel point in color component.
Step 104, third luminance component and the second color component are carried out second of fusion by electronic equipment, after obtaining fusion
Image.
In embodiment provided by the present application, after electronic equipment merges the luminance component of color image and black white image, root
The color component of color image is adjusted according to the luminance component and fused luminance component of color image, is merged
The color component of image afterwards, i.e., in the embodiment of the present application, after luminance component and fusion of the electronic equipment based on image before merging
The luminance component of image is adjusted the color component of color image, avoids fused luminance component to color component
Influence, improve the quality of fused image.
Further, in order to avoid excessively adjusting to colouring information corresponding to the pixel, lead to fused image face
The problem of colour distortion.Electronic equipment is based on drawing coefficient corresponding to each pixel in the first luminance component to it in the first face
Colouring information in colouring component is adjusted, before obtaining the second color component, further includes:
Based on relationship preset between brightness and the threshold value of drawing coefficient, each pixel institute in the first luminance component is determined
The threshold value of corresponding drawing coefficient；
Judge in the first luminance component to be greater than the drawing corresponding to it with the presence or absence of drawing coefficient corresponding to any pixel point
Stretch the threshold value of coefficient；
If it exists, then by drawing coefficient corresponding to any pixel point adjust with its corresponding to drawing coefficient threshold value phase
Together.
Specifically, right between preset brightness and the threshold value of drawing coefficient store in electronic equipment local or database
It should be related to, electronic equipment obtains in the first luminance component after drawing coefficient corresponding to each pixel, is based on the first brightness
Brightness corresponding to each pixel determines then the threshold value of the drawing coefficient corresponding to it judges each pixel in component
Whether corresponding drawing coefficient is greater than the threshold value of the drawing coefficient corresponding to it, if more than then by drawing corresponding to pixel
Stretch coefficient adjustment with its corresponding to the threshold value of drawing coefficient it is identical.
Further, if electronic equipment is based on preset sampling window respectively by the first luminance component and third luminance component
In brightness carry out down-sampling processing, high-resolution fused image in order to obtain, electronic equipment is by any pixel point institute
The adjustment of corresponding drawing coefficient with its corresponding to the threshold value of drawing coefficient it is identical after, further includes:
Drawing coefficient adjusted corresponding to pixel each in first luminance component is subjected to up-sampling treatment, is obtained
Drawing coefficient corresponding to each pixel in first luminance component.
Specifically, electronic equipment carries out drawing coefficient adjusted corresponding to pixel each in the first luminance component
There are many ways to up-sampling treatment, for example, the methods of arest neighbors interpolation, two-wire interpolation, mean value interpolation or intermediate value interpolation.For
It is easy to understand and above-mentioned drawing coefficient adjusted corresponding to each pixel in first luminance component is carried out at up-sampling
A process is managed, is described in detail the process of up-sampling treatment by taking arest neighbors interpolation method as an example below.
For example, as shown in Figure 2 in color image any adjacent pixel position view, A, B, C, D are that the first brightness divides
Four pixel regions of arbitrary neighborhood in amount, wherein the coordinate at four angles in region is respectively (i, j), (i+1, j), (i, j+
1), and (i+1, j+1) then carries out up-sampling treatment in this region, that is, is inserted into new pixel.Specifically, setting new insert
The coordinate of the pixel entered is (i+u, j+v), and u, v are the decimal greater than zero less than 1, if u < 0.5, v < 0.5, then and the picture being newly inserted into
Vegetarian refreshments falls in pixel a-quadrant, and drawing coefficient corresponding to pixel A is assigned to the pixel being newly inserted into；Similarly, if 0.5 <
U < 1, v < 0.5, the then pixel being newly inserted into fall in pixel B area, and drawing coefficient corresponding to pixel B is assigned to new insert
The pixel entered；If u < 0.5,0.5 < v < 1, the then pixel being newly inserted into falls in the region pixel C, will be corresponding to pixel C
Drawing coefficient is assigned to the pixel being newly inserted into；If 0.5 <u < 1,0.5 < v < 1, the then pixel being newly inserted into falls in the area pixel D
Drawing coefficient corresponding to pixel D, is assigned to the pixel being newly inserted by domain, i.e., the pixel being newly inserted into distance is nearest
Face drawing coefficient corresponding to pixel and be assigned to the pixel being newly inserted into, carries out up-sampling treatment in the region to realize.
The embodiment of the present application provides a kind of device of image co-registration processing, and referring to Fig. 3, which includes:
Decomposition unit 301, for obtaining color image and black white image under Same Scene, and by the color image into
Row, which decomposes, obtains characteristic parameter, and obtains corresponding second luminance component of the black white image, wherein the characteristic parameter packet
Include the first luminance component and the first color component；
First integrated unit 302, for melt for the first time with second luminance component first luminance component
It closes, obtains third luminance component；
Processing unit 303, for being based on first luminance component and the third luminance component to first face
Colouring component is adjusted, and obtains the second color component；
Second integrated unit 304, for being melted the third luminance component and second color component for the second time
It closes, obtains fused image.
Optionally, the decomposition unit 301, is specifically used for:
Judge whether Color Channel and luminance channel are in data corresponding to each pixel in the color image
Discrete state；
If Color Channel and luminance channel are not in discrete state in the data, the data are subjected to format and are turned
It changes, so that Color Channel described in the data after conversion and the luminance channel are in discrete state；
Data corresponding to each pixel are decomposed, brightness corresponding to each pixel and face are obtained
Color information；
The brightness for extracting all pixels point in the color image obtains first luminance component, and extracts the coloured silk
The colouring information of all pixels point obtains first color component in chromatic graph picture.
Optionally, first integrated unit 302, is specifically used for:
By identical bits in brightness corresponding to each pixel in first luminance component and second luminance component
It sets brightness corresponding to pixel to be merged, obtains fused brightness corresponding to each same position pixel；
The third brightness is obtained based on fused brightness corresponding to all pixels point in first luminance component
Component.
Optionally, shown in Figure 4, the processing unit 303 includes: denoising unit 401, comparing unit 402 and adjusts
Whole unit 403；
The denoising unit 401, for removing the noise in first luminance component and the third luminance component；
The comparing unit 402, for bright corresponding to each pixel in first luminance component after denoising
It spends and is compared with the brightness of same position pixel in the third luminance component after denoising, obtain each same position picture
Drawing coefficient corresponding to vegetarian refreshments；
The adjustment unit 403, for based on drawing coefficient corresponding to each pixel in first luminance component
Its colouring information in first color component is adjusted, second color component is obtained.
Optionally, the denoising unit 401, is specifically used for:
First luminance component and the third luminance component are filtered based on Image filter arithmetic；With/
Or
Based on preset sampling window respectively by the brightness in first luminance component and the third luminance component
Carry out down-sampling processing.
Optionally, referring to Fig. 5, described device further include: determination unit 501 and judging unit 502；
The determination unit 501, for determining described based on relationship preset between brightness and the threshold value of drawing coefficient
The threshold value of drawing coefficient corresponding to each pixel in one luminance component；
The judging unit 502, for judging in first luminance component with the presence or absence of corresponding to any pixel point
Drawing coefficient is greater than the threshold value of the drawing coefficient corresponding to it；
The processing unit 303 is also used to drawing coefficient corresponding to any pixel point if it exists and is greater than corresponding to it
The threshold value of drawing coefficient, then by the threshold of the adjustment and the drawing coefficient corresponding to it of drawing coefficient corresponding to any pixel point
It is worth identical.
Optionally, the processing unit 303, is also used to:
Drawing coefficient adjusted corresponding to each pixel in first luminance component is subjected to up-sampling treatment,
Obtain drawing coefficient corresponding to each pixel in first luminance component.
Optionally, the determination unit 501, it is right based on institute after pixel denoising each in the color image to be also used to
Preset relation between the saturation degree and brightness of the brightness and each pixel answered determines corresponding to each pixel
Saturation degree；
The processing unit 303, specifically for based on drawing coefficient corresponding to each pixel and described full
The colouring information of each pixel is adjusted with degree, obtains second color component.
Optionally, the determination unit 501, is specifically used for:
Determine the first difference between preset dark space saturation degree and preset clear zone saturation degree, the minimum of brightness in clear zone
Brightness in the second difference and the clear zone in value and the third luminance component between brightness corresponding to each pixel
Minimum value and dark space brightness maximum value between third difference；
The first ratio between second difference and the third difference is determined based on preset cutted function, and really
The first product between fixed first ratio and first difference；
First product is added with the preset clear zone saturation degree, obtains satisfying corresponding to each pixel
And degree.
Optionally, the processing unit 303, is specifically used for:
Determine the brightness value and the first corresponding luminance component of third luminance component corresponding to each pixel
Brightness value between the second ratio, and using second ratio as the drawing coefficient；
It determines the second product between the drawing coefficient and the saturation degree, and determines that each pixel institute is right
The 4th difference between the colouring information and preset value of the first color component answered；
Second product is multiplied with the 4th difference, obtains each pixel colouring information adjusted.
The application provides a kind of electronic equipment, referring to Fig. 6, the electronic equipment, comprising:
Memory 601, for storing instruction performed by least one processor；
Processor 602, for executing step described in the instruction execution Fig. 1 stored in memory.
The application provides a kind of computer readable storage medium, and the computer-readable recording medium storage has computer to refer to
It enables, when computer instruction is run on computers, so that computer executes step described in Fig. 1.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (13)
1. a kind of method of image co-registration processing characterized by comprising
The color image and black white image under Same Scene are obtained, and is decomposed the color image to obtain characteristic parameter,
And obtain corresponding second luminance component of the black white image, wherein the characteristic parameter includes the first luminance component and the
One color component；
First luminance component is merged with second luminance component progress first time, obtains third luminance component；
First color component is adjusted based on first luminance component and the third luminance component, obtains
Second colors component；
The third luminance component and second color component are carried out second to merge, obtain fused image.
2. the method as described in claim 1, which is characterized in that decomposed to obtain characteristic parameter for the color image, be wrapped
It includes:
Judge whether Color Channel and luminance channel are in separation in data corresponding to each pixel in the color image
State；
If it is not, then format the data, so that Color Channel described in data after conversion and described bright
Degree channel is in discrete state；
Data corresponding to each pixel are decomposed, brightness corresponding to each pixel and color letter are obtained
Breath；
The brightness for extracting all pixels point in the color image obtains first luminance component, and extracts the cromogram
The colouring information of all pixels point obtains first color component as in.
3. the method as described in claim 1, which is characterized in that by first luminance component and second luminance component into
Row merges for the first time, obtains third luminance component, comprising:
By same position picture in brightness corresponding to each pixel in first luminance component and second luminance component
Brightness corresponding to vegetarian refreshments is merged, and fused brightness corresponding to each same position pixel is obtained；
The third luminance component is obtained based on fused brightness corresponding to all pixels point in first luminance component.
4. method a method according to any one of claims 1-3, which is characterized in that be based on first luminance component and the third
Luminance component is adjusted first color component, obtains the second color component, comprising:
Remove the noise in first luminance component and the third luminance component；
By brightness corresponding to each pixel in first luminance component after denoising and the third brightness after denoising
The brightness of same position pixel is compared in component, obtains drawing coefficient corresponding to each same position pixel；
Based on drawing coefficient corresponding to each pixel in first luminance component to it in first color component
Colouring information be adjusted, obtain second color component.
5. method as claimed in claim 4, which is characterized in that remove first luminance component and the third brightness point
Noise in amount, comprising:
First luminance component and the third luminance component are filtered based on Image filter arithmetic；And/or
The brightness in first luminance component and the third luminance component is carried out respectively based on preset sampling window
Down-sampling processing.
6. method as claimed in claim 5, which is characterized in that based on corresponding to each pixel in first luminance component
Drawing coefficient its colouring information in first color component is adjusted, obtain second color component it
Before, further includes:
Based on relationship preset between brightness and the threshold value of drawing coefficient, each pixel institute in first luminance component is determined
The threshold value of corresponding drawing coefficient；
Judge in first luminance component to be greater than the drawing corresponding to it with the presence or absence of drawing coefficient corresponding to any pixel point
Stretch the threshold value of coefficient；
If it exists, then by drawing coefficient corresponding to any pixel point adjust with its corresponding to drawing coefficient threshold value phase
Together.
7. method as claimed in claim 6, which is characterized in that if based on preset sampling window respectively by first brightness
Brightness in component and the third luminance component carries out down-sampling processing, by stretching system corresponding to any pixel point
Number adjustment with its corresponding to the threshold value of drawing coefficient it is identical after, further includes:
Drawing coefficient adjusted corresponding to each pixel in the third luminance component is subjected to up-sampling treatment, is obtained
Drawing coefficient corresponding to each pixel in first luminance component.
8. method as claimed in claim 4, which is characterized in that based on corresponding to each pixel in first luminance component
Drawing coefficient its colouring information in first color component is adjusted, obtain second color component, wrap
It includes:
Saturation degree based on brightness and each pixel corresponding after pixel each in color image denoising with
Preset relation between brightness determines saturation degree corresponding to each pixel；
The color of each pixel is believed based on drawing coefficient corresponding to each pixel and the saturation degree
Breath is adjusted, and obtains second color component.
9. method according to claim 8, which is characterized in that based on institute after pixel denoising each in the color image
Preset relation between corresponding brightness and the saturation degree and brightness of each pixel determines corresponding to each pixel
Saturation degree, comprising:
Determine the first difference between preset dark space saturation degree and preset clear zone saturation degree, in clear zone the minimum value of brightness and
Brightness is most in the second difference and the clear zone in the third luminance component between brightness corresponding to each pixel
Third difference between small value and the maximum value of dark space brightness；
The first ratio between second difference and the third difference is determined based on preset cutted function, and determines institute
State the first product between the first ratio and first difference；
First product is added with the preset clear zone saturation degree, obtains saturation corresponding to each pixel
Degree.
10. method as claimed in claim 9, which is characterized in that based on drawing coefficient corresponding to each pixel with
And the saturation degree is adjusted the colouring information of each pixel, comprising:
Determine the bright of the brightness value of third luminance component corresponding to each pixel and the first corresponding luminance component
The second ratio between angle value, and using second ratio as the drawing coefficient；
It determines first corresponding to the second product and each pixel between the drawing coefficient and the saturation degree
The 4th difference between the colouring information and preset value of color component；
Second product is multiplied with the 4th difference, obtains each pixel colouring information adjusted.
11. a kind of device of image co-registration processing characterized by comprising
Decomposition unit is decomposed for obtaining color image and black white image under Same Scene, and by the color image
Characteristic parameter is obtained, and obtains corresponding second luminance component of the black white image, wherein the characteristic parameter includes first
Luminance component and the first color component；
First integrated unit is obtained for merging first luminance component with second luminance component progress first time
Third luminance component；
Processing unit, for based on first luminance component and the third luminance component to first color component into
Row adjustment, obtains the second color component；
Second integrated unit is merged for the third luminance component and second color component to be carried out second, is obtained
Fused image.
12. a kind of electronic equipment, which is characterized in that the electronic equipment, comprising:
Memory, for storing instruction performed by least one processor；
Processor, for executing the instruction execution stored in memory such as described in any item methods of claim 1-10.
13. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer to refer to
It enables, when the computer instruction is run on computers, so that computer is executed as claim 1-10 is described in any item
Method.
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