CN108769634A - A kind of image processing method, image processing apparatus and terminal device - Google Patents
A kind of image processing method, image processing apparatus and terminal device Download PDFInfo
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- CN108769634A CN108769634A CN201810734863.XA CN201810734863A CN108769634A CN 108769634 A CN108769634 A CN 108769634A CN 201810734863 A CN201810734863 A CN 201810734863A CN 108769634 A CN108769634 A CN 108769634A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
- H04N23/88—Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control
Abstract
This application provides a kind of image processing method, image processing apparatus and terminal device, the method includes：Multiple images are obtained, and judge whether multiple described images are the image shot in the same area；If multiple described images are the image shot in the same area, it is determined that the overlapping background area of multiple images；Count the color histogram of the overlapping background area；According to the color histogram, judge whether the overlapping background area is preset solid background；If the overlapping background area is preset solid background, an image is selected from multiple described images, and white balance processing is carried out to selected image according to the overlapping background area.The application can be solved when having large stretch of solid background in image, the too serious problem of the colour cast of treated caused by traditional white balance algorithm image.
Description
Technical field
The application belongs to technical field of image processing more particularly to a kind of image processing method, image processing apparatus, terminal
Equipment and computer readable storage medium.
Background technology
Currently, terminal device is after the completion of taking pictures, it is necessary to white balance processing is carried out to captured image, at white balance
The purpose of reason is the color in order to make captured object that script be presented, avoid the occurrence of it is partially green under fluorescent light, in tungsten light
Under it is partially yellow, in the partially blue phenomenon of daylight shaded side.
Traditional white balance algorithm is firstly the need of the colour temperature according to captured Image estimation current environment, then according to institute
The colour temperature of estimation carries out white balance processing to captured image.However, when having large stretch of solid background in captured image
When, for example when blue background or yellow background comprising sheet, traditional white balance algorithm can fail.For example, when captured
Image in when having large stretch of blue background, large stretch of blue background can be identified as under high color temperature by traditional white balance algorithm
White background can be by blue background when doing white balance processing so that can the colour temperature of current environment be identified as high color temperature environment
It is modified to white, other objects in image also will appear serious colour cast, for example face will appear yellowing phenomenon.Therefore, work as figure
When having large stretch of solid background as in, the whole colour cast of traditional white balance algorithm can lead to that treated image is too serious,
To which user experience is poor.
Invention content
It can in view of this, this application provides a kind of image processing method, image processing apparatus, terminal device and computers
Storage medium is read, can be solved when having large stretch of solid background in image, treated caused by traditional white balance algorithm
The too serious technical problem of the colour cast of image.
The application first aspect provides a kind of image processing method, including：
Multiple images are obtained, and judge whether multiple above-mentioned images are the image shot in the same area；
If multiple above-mentioned images are the image shot in the same area,：
Determine the overlapping background area of multiple above-mentioned images；
Count the color histogram of above-mentioned overlapping background area；
According to above-mentioned color histogram, judge whether above-mentioned overlapping background area is preset solid background；
If above-mentioned overlapping background area is preset solid background, an image is selected from multiple above-mentioned images, and
White balance processing is carried out to selected image according to above-mentioned overlapping background area.
The application second aspect provides a kind of image processing apparatus, including：
Image collection module for obtaining multiple images, and judges whether multiple above-mentioned images are to be shot in the same area
Image；
Background area determining module, if being the image shot in the same area for multiple above-mentioned images, it is determined that above-mentioned
The overlapping background area of multiple images；
Statistics with histogram module, the color histogram for counting above-mentioned overlapping background area；
Solid background judgment module, for according to above-mentioned color histogram, judging whether above-mentioned overlapping background area is pre-
If solid background；
White balance processing module, if being preset solid background for above-mentioned overlapping background area, from multiple above-mentioned figures
An image is selected as in, and white balance processing is carried out to selected image according to above-mentioned overlapping background area.
The application third aspect provides a kind of terminal device, including memory, processor and is stored in above-mentioned storage
In device and the computer program that can be run on above-mentioned processor, above-mentioned processor are realized as above when executing above computer program
The step of stating first aspect method.
The application fourth aspect provides a kind of computer readable storage medium, the storage of above computer readable storage medium storing program for executing
There is computer program, is realized such as the step of above-mentioned first aspect method when above computer program is executed by processor.
The 5th aspect of the application provides a kind of computer program product, and above computer program product includes computer journey
Sequence is realized when above computer program is executed by one or more processors such as the step of above-mentioned first aspect method.
Therefore this application provides a kind of image processing methods, first, obtain multiple images, and judge this multiple
Whether image is the image shot in the same area；Secondly, when multiple images are in the image that the same area is shot, according to
Multiple above-mentioned images determine the overlapping background area of multiple images；Then, after getting overlapping background area, statistics should
It is overlapped the color histogram of background area, and judges whether overlapping background area is preset pure according to the color histogram of statistics
Color background, such as blue or yellow etc.；Finally, if overlapping background area is preset solid background, from above-mentioned more
It opens and selects an image in image, and white balance processing is carried out to selected image according to above-mentioned overlapping background area.Therefore,
Above-mentioned the provided technical solution of the application needs to first determine whether overlapping background area before carrying out white balance processing to image
Whether it is preset solid background, such as blue background or yellow background etc., if when preset solid background, according to the overlapping
Background area assists white balance processing.Traditional white balance algorithm to image before carrying out white balance processing without judging image
In whether therefore solid background can be identified as white background comprising solid background, to cause the estimation to environment colour temperature inclined
Difference is larger so that treated that image color cast is more serious for white balance, and technical solution provided herein to image into
Whether before the processing of row white balance, will recognize that has solid background in image, for example, know in image whether comprising blue background or
Yellow background can be reduced to environment to a certain extent it can thus be avoided the solid background is identified as white by white balance
The estimated bias of colour temperature can be to a certain extent to which the image entirety colour cast after avoiding white balance from handling is too serious
Improve user experience.
Description of the drawings
It in order to more clearly explain the technical solutions in the embodiments of the present application, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only some of the application
Embodiment for those of ordinary skill in the art without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of implementation process schematic diagram for image processing method that the embodiment of the present application one provides；
Fig. 2 is a kind of acquisition methods schematic diagram for overlapping region that the embodiment of the present application one provides；
Fig. 3 is the implementation process schematic diagram for another image processing method that the embodiment of the present application two provides；
Fig. 4 is the schematic diagram for another environment colour temperature method of estimation that the embodiment of the present application two provides；
Fig. 5 is a kind of structural schematic diagram for image processing apparatus that the embodiment of the present application three provides；
Fig. 6 is the structural schematic diagram for the terminal device that the embodiment of the present application four provides.
Specific implementation mode
In being described below, for illustration and not for limitation, it is proposed that such as tool of particular system structure, technology etc
Body details, so as to provide a thorough understanding of the present application embodiment.However, it will be clear to one skilled in the art that there is no these specific
The application can also be realized in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, so as not to obscure the description of the present application with unnecessary details.
Image processing method provided by the embodiments of the present application can be adapted for terminal device, and illustratively, above-mentioned terminal is set
It is standby to include but not limited to：Smart mobile phone, tablet computer, learning machine, intelligent wearable device etc..
It should be appreciated that ought use in this specification and in the appended claims, the instruction of term " comprising " is described special
Sign, entirety, step, operation, the presence of element and/or component, but be not precluded one or more of the other feature, entirety, step,
Operation, element, component and/or its presence or addition gathered.
It is also understood that the term used in this present specification is merely for the sake of the mesh for describing specific embodiment
And be not intended to limit the application.As present specification and it is used in the attached claims, unless on
Other situations are hereafter clearly indicated, otherwise " one " of singulative, "one" and "the" are intended to include plural form.
It will be further appreciated that the term "and/or" used in present specification and the appended claims is
Refer to any combinations and all possible combinations of one or more of associated item listed, and includes these combinations.
As used in this specification and in the appended claims, term " if " can be according to context quilt
Be construed to " when ... " or " once " or " in response to determination " or " in response to detecting ".Similarly, phrase " if it is determined that " or
" if detecting [described condition or event] " can be interpreted to mean according to context " once it is determined that " or " in response to true
It is fixed " or " once detecting [described condition or event] " or " in response to detecting [described condition or event] ".
In the specific implementation, the terminal device described in the embodiment of the present application is including but not limited to such as with the sensitive table of touch
Mobile phone, laptop computer or the tablet computer in face (for example, touch-screen display and/or touch tablet) etc it is other
Portable device.It is to be further understood that in certain embodiments, above equipment is not portable communication device, but is had
The desktop computer of touch sensitive surface (for example, touch-screen display and/or touch tablet).
In following discussion, the terminal device including display and touch sensitive surface is described.However, should manage
Solution, terminal device may include that one or more of the other physical User of such as physical keyboard, mouse and/or control-rod connects
Jaws equipment.
Terminal device supports various application programs, such as one of the following or multiple：Drawing application program, demonstration application
Program, word-processing application, website establishment application program, disk imprinting application program, spreadsheet applications, game are answered
With program, telephony application, videoconference application, email application, instant messaging applications, forging
Refining supports application program, photo management application program, digital camera application program, digital camera application program, web-browsing to answer
With program, digital music player application and/or video frequency player application program.
The various application programs that can be executed on the terminal device can use at least one of such as touch sensitive surface
Public physical user-interface device.It can be adjusted among applications and/or in corresponding application programs and/or change touch is quick
Feel the corresponding information shown in the one or more functions and terminal on surface.In this way, terminal public physical structure (for example,
Touch sensitive surface) it can support the various application programs with intuitive and transparent user interface for a user.
In addition, in the description of the present application, term " first ", " second " etc. are only used for distinguishing description, and should not be understood as
Instruction implies relative importance.
In order to illustrate the above-mentioned technical solution of the application, illustrated below by specific embodiment.
Embodiment one
The image processing method provided below the embodiment of the present application one is described, and please refers to attached drawing 1, and the application is implemented
Image processing method in example one includes：
In step S101, multiple images are obtained, and judge whether multiple above-mentioned images are the figure shot in the same area
Picture；
In the embodiment of the present application one, multiple images are obtained first, which can be the photograph album from terminal device
In multiple images for automatically selecting；Alternatively, can also be multiple images that user selects manually from photograph album, alternatively, can be with
It is multiple images that the terminal device automatically snaps simultaneously when receiving the shooting instruction of user, it is more to how to obtain herein
Image is opened to be not construed as limiting.
After getting multiple images, need to judge whether multiple images are the image shot in the same area,
It is above-mentioned to judge whether multiple images are the image shot in the same area in the embodiment of the present application one, may include：
First, shooting time interval between adjacent two images in above-mentioned multiple images and above-mentioned shooting is obtained
The average movement speed of terminal device when multiple images；
Specifically, after obtaining multiple images, multiple acquired images can successively be carried out according to shooting time
Sequence, then shooting time interval between adjacent two images and terminal device are obtained during shooting multiple above-mentioned images
Average movement speed.For example, multiple images obtained are respectively image A, image B and image C, the shooting time of image A is
The morning 9 of 2018-06-21:The shooting time of 00, image B are the morning 9 of 2018-06-21:05, the shooting time of image C is
Above-mentioned the 9 of 2018-06-21:02, then above-mentioned 3 images are ranked up first, as image A, image C and image B, so
Obtain the shooting time interval of image A and image C afterwards, i.e., the shooting time interval of 2 minutes and image C and image B, i.e., 3 points
Clock, and computing terminal equipment (i.e. morning 9 during shooting multiple above-mentioned images:00-9:05 point) average movement speed, can be with
Multiple above-mentioned images are being shot by detection terminals equipment such as acceleration transducer on terminal device or gyro sensors
Then the instantaneous movement speed of period calculates average movement speed according to the instantaneous movement speed detected.
Secondly, if the shooting time interval between above-mentioned adjacent two images is respectively less than default shooting duration of video, and it is above-mentioned flat
Equal movement speed is less than default movement speed, it is determined that multiple above-mentioned images are the image shot in the same area；Otherwise it is assumed that
Multiple above-mentioned images are not the images shot in the same area；
In the embodiment of the present application, due to needing to obtain the overlapping background areas of multiple above-mentioned images in subsequent steps
Domain, therefore, above-mentioned default shooting duration of video and above-mentioned default movement speed are often smaller, and in order to ensure to be obtained as far as possible
Multiple images taken are shot in the same area, and the acquisition methods of multiple above-mentioned images, which usually may be selected to be to work as, receives user
Shooting instruction when, terminal device automatically snaps multiple images simultaneously.
In step s 102, if multiple above-mentioned images are the image shot in the same area, it is determined that multiple above-mentioned images
Overlapping background area；
If above-mentioned steps S101 determines that multiple acquired images are the image shot in the same area, it is determined that above-mentioned more
The overlapping background area of image is opened, in the embodiment of the present application, above-mentioned overlapping background area is that multiple above-mentioned images co-own
Background area, the overlapping region (i.e. jointly owned image-region) of multiple above-mentioned images can be calculated first, then removed
Region in overlapping region where foreground, you can obtaining overlapping background area can specifically obtain above-mentioned by the following method
The overlapping background area of multiple images：
First, the overlapping region of multiple above-mentioned images is determined according to image matching algorithm；
As illustrated in fig. 2, it is assumed that after image 201, image 202 and image 203 click shooting button for user, it is captured
Multiple images (in shooting process due to user, inevitably hand shaking phenomenon, therefore, multiple acquired images
It is not identical), in order to obtain overlapping region (i.e. image 201, the image of above-mentioned image 201, image 202 and image 203
202 and 203 jointly owned image-region of image), above-mentioned image 201, image 202 and image 203 can be divided
Secondly block processing extracts feature of each piecemeal, such as color characteristic, textural characteristics, edge feature and/or brightness etc.,
It is then possible on the basis of image 201, by some piecemeal in image 201, such as piecemeal A respectively with image 202 and image
Whether all piecemeals in 203 carry out characteristic similarity matching, judge in image 202 and image 203 to include piecemeal A, time
Image 201 is gone through to obtain image 201, image 202 and all common piecemeals of image 203, to obtain multiple above-mentioned images
Overlapping region.As shown in Fig. 2, can piecemeal A be subjected to similarity mode with each piecemeal in image 202 respectively first,
Judge with the presence or absence of the piecemeal for being more than default similarity threshold with piecemeal A similarities in image 202, if exist in image 202 with
Piecemeal A similarities are more than the piecemeal of default similarity threshold, then it is assumed that piecemeal A is image 201 and 202 jointly owned figure of image
As region；Secondly, piecemeal A is subjected to similarity mode with each piecemeal in image 203 respectively, judge in image 203 whether
In the presence of the piecemeal for being more than default similarity threshold with piecemeal A similarities, it is more than in advance with piecemeal A similarities if existing in image 203
If the piecemeal of similarity threshold, then it is assumed that piecemeal A is image 201 and 203 jointly owned image-region of image；Finally, it traverses
All piecemeals of image 201 obtain the overlapping region of image 201, image 202 and image 203.
Secondly, the goal-selling in above-mentioned overlapping region is detected；
Under normal conditions, foreground object, such as portrait, animal have been usually contained in the overlapping region acquired in above-mentioned steps
And plant etc. therefore can be after the overlapping region for obtaining multiple above-mentioned images, before detecting in above-mentioned overlapping region
Scenery body, it is generally the case that foreground object is often portrait, animal and plant etc., and therefore, we can detect above-mentioned overlapping
The goal-selling in region, the goal-selling can be common foreground object, such as portrait, animal and plant etc., to
Obtain the region where each goal-selling in overlapping region.
Finally, if including goal-selling in above-mentioned overlapping region, the region where above-mentioned goal-selling is obtained, and according to
Region where above-mentioned goal-selling determines above-mentioned overlapping background area, wherein above-mentioned overlapping background area is by above-mentioned overlay region
The region composition where above-mentioned goal-selling is removed in domain.
If it includes goal-selling to detect in overlapping region, overlapping region is removed to the region where goal-selling, from
And overlapping background area is obtained, if goal-selling is not detected in the overlapping region, directly using above-mentioned overlapping region as weight
Folded background area.
In step s 103, the color histogram of above-mentioned overlapping background area is counted；
In the embodiment of the present application, it after obtaining above-mentioned overlapping background area, needs to obtain the overlapping background area
Color histogram, in order to can subsequently determine the color of the overlapping background area according to the color histogram.Wherein, above-mentioned face
Color Histogram includes R histograms, G histograms and B histograms, and above-mentioned R histograms, G histograms and B histograms are respectively used to
Indicate the ratio that R, G, B take the number of pixel corresponding when each pixel value to account for total pixel number.
For example, if the value of R, G, B of each pixel are that 0~255, R histograms are used in overlapping background area
Indicate that pixel number when R values are respectively 0~255 accounts for the ratio of total pixel number, G histograms are used to indicate G values
Pixel number when respectively 0~255 accounts for the ratio of total pixel number, B histograms be used to indicate B values be respectively 0~
Pixel number when 255 accounts for the ratio of total pixel number.
In step S104, according to above-mentioned color histogram, judge whether above-mentioned overlapping background area is preset pure color
Background；
Under normal conditions, when in image comprising large stretch of blue background and yellow background, traditional white balance is utilized
Algorithm can make the image color cast after blank level adjustment than more serious.Therefore, in the embodiment of the present application, above-mentioned preset pure
Color background can be blue solid background and/or yellow solid background, to work as in image comprising blue solid background or yellow
When solid background, white balance adjusting can be assisted according to the color of the overlapping background area.
Wherein, in the embodiment of the present application, above-mentioned according to above-mentioned color histogram, whether judge above-mentioned overlapping background area
For preset solid background, may include：
First, the pre-set color histogram of above-mentioned preset solid background is obtained, for example, when preset solid background is indigo plant
When color solid background, the pre-set color histogram of the blue solid background can be obtained；
Secondly, above-mentioned color histogram and above-mentioned pre-set color histogram are subjected to similarity mode, that is to say step
The pre-set color histogram of the color histogram of acquired above-mentioned overlapping background area and above-mentioned blue solid background in S103
Carry out similarity mode, wherein similarity mode algorithm can refer to the prior art, and details are not described herein again；
Then, if the similarity of above-mentioned color histogram and above-mentioned pre-set color histogram is more than preset similarity threshold
Value, then it is assumed that above-mentioned overlapping background area is otherwise above-mentioned preset solid background is not above-mentioned preset solid background,
If the similarity for being above-mentioned color histogram and the pre-set color histogram of blue solid background is more than preset similarity threshold
Value, then it is assumed that above-mentioned overlapping background area is blue solid background.
, can be by step in addition, if above-mentioned preset solid background is blue solid background and yellow solid background
S103 obtain above-mentioned overlapping background area color histogram respectively with the pre-set color histogram of blue solid background and
The pre-set color histogram of yellow solid background carries out similarity mode, if the color histogram of above-mentioned overlapping background area and indigo plant
The similarity of the pre-set color histogram of color solid background is more than preset similarity threshold, then it is assumed that above-mentioned overlapping background area
For blue solid background, if the color histogram of above-mentioned overlapping background area and the pre-set color histogram of yellow solid background
Similarity is more than preset similarity threshold, then it is assumed that above-mentioned overlapping background area is yellow solid background.
In step S105, if above-mentioned overlapping background area is preset solid background, selected from multiple above-mentioned images
An image is selected, and white balance processing is carried out to selected image according to above-mentioned overlapping background area；
In the embodiment of the present application one, above-mentioned selected image can be terminal device selected in multiple images
Any one, or may be the selected wherein image of instruction according to user, this is not construed as limiting herein.
Wherein, above-mentioned that white balance processing is carried out to selected image according to above-mentioned overlapping background area, may include：
If overlapping background area be preset solid background, such as blue solid background when, can be in multiple above-mentioned figures
The image-region removed except overlapping background area is obtained as in；And according in multiple above-mentioned images remove overlapping background area it
Outer image-region estimates the colour temperature of current environment；Finally, selected image is put down in vain according to estimated colour temperature
Weighing apparatus processing.
Traditional white balance algorithm is to estimate the colour temperature of current environment according to whole image, can be caused in this way when in image
Including when a large amount of solid background, color temperature estimation deviation can be made larger, above-mentioned the provided technical solution of the application is basis
The image-region except overlapping background area is removed to estimate the colour temperature of current environment, it can thus be avoided large stretch of pure color back of the body
Influence of the scape to environment color temperature estimation so that it is more accurate to the estimation of environment colour temperature, it avoids when pure comprising sheet in image
When color background, the too serious technical problem of image color cast after white balance processing.Wherein, to the estimation of current environment colour temperature
And white balance processing is carried out to image according to colour temperature and belongs to the prior art, details are not described herein again.
The technical solution that the embodiment of the present application one is provided needs to first determine whether before carrying out white balance processing to image
It is overlapped whether background area is preset solid background, such as blue background or yellow background, if when preset solid background,
White balance processing is assisted according to the overlapping background area.Traditional white balance algorithm does not have before carrying out white balance processing to image
Have and judges in image whether comprising solid background therefore solid background white background can be identified as, to cause to ambient color
The estimated bias of temperature is larger so that treated that image color cast is more serious for white balance, and technical solution provided herein
Whether before carrying out white balance processing to image, will recognize that has solid background in image, for example, know in image whether include
Blue background or yellow background to a certain extent can be with it can thus be avoided the solid background is identified as white by white balance
The estimated bias to environment colour temperature is reduced, to which the image entirety colour cast after avoiding white balance from handling is too serious, Ke Yi
User experience is improved to a certain extent.
Embodiment two
The image processing method provided below the embodiment of the present application two is described, and please refers to attached drawing 3, and the application is implemented
The image processing method of example two includes：
In step S301, multiple images are obtained, and judge whether multiple above-mentioned images are the figure shot in the same area
Picture；
In step s 302, if multiple above-mentioned images are the image shot in the same area, it is determined that multiple above-mentioned images
Overlapping background area；
In step S303, the color histogram of above-mentioned overlapping background area is counted；
In step s 304, according to above-mentioned color histogram, judge whether above-mentioned overlapping background area is preset pure color
Background；
In the embodiment of the present application two, above-mentioned steps S301-S304 is identical as the step S101-S104 in embodiment one,
For details, reference can be made to the descriptions of embodiment one, and details are not described herein again.
In step S305, if above-mentioned overlapping background area is preset solid background, selected from multiple above-mentioned images
An image, and the color of the preset solid background corresponding to above-mentioned overlapping background area are selected, estimates current environment
Colour temperature；
In the embodiment of the present application two, another method of estimation to environment colour temperature is provided.In the embodiment of the present application,
It can be pre-stored under different colour temperatures, the pixel value size of preset solid background is (since preset solid background is in height
Under colour temperature and low color temperature, it may occur that colour cast, therefore, the preset solid background will present different colors under different-colour,
Having different pixel values, we can in advance record under different colour temperatures, the pixel value size of preset solid background, and
And in just can preserving " correspondence relationship information of colour temperature-pixel value " to memory before terminal device manufacture), then,
If confirming in step S304, above-mentioned overlapping background area is preset solid background, can preset preservation according to us
" correspondence relationship information of colour temperature-pixel value " come estimate current environment color temperature value (although it is considered that overlapping background area be
Preset solid background, but the color of the overlapping background area will necessarily be with our preset solid backgrounds to a certain extent
Color have slight deviations, therefore, we can be according to the pixel value of each pixel of overlapping background area and we are pre-
If " correspondence relationship information of colour temperature-pixel value " estimate the colour temperature of current environment).
In order to more intuitively describe the above-mentioned technical proposal that the embodiment of the present application is provided, below with attached drawing 4, to above-mentioned
The environment colour temperature method of estimation provided is described.Assuming that preset solid background is image 402, in high color temperature meeting
Colour cast occurs, becomes image 401, becomes image 403 in low color temperature, then records under different-colour, the default pure color
The pixel value size of background, correspondence relationship information 404 as shown in Figure 4, and the correspondence relationship information 404 can be pre-saved
In the memory of terminal device, then, if the overlapping background area of multiple images acquired in step S304 judgment steps S301
The color histogram of domain 405 and preset solid background 402 is more similar (will necessarily have certain deviation), then can assert this
Overlapping background area 405 is preset solid background, but under normal conditions, the overlapping background area 405 and preset pure color
The color of background simultaneously differs, and has slight deviations, therefore, can be according to the picture of each pixel in the overlapping background area
Plain value and preset correspondence relationship information 404 estimate current color temperature value.Specifically, background area 405 will can be overlapped
Piecemeal is carried out, the average value of the pixel value of each pixel in each piecemeal is calculated, and according to calculated average value, in correspondence
Colour temperature size corresponding with the average value is searched in relation information 404, to seek the color temperature value corresponding to each piecemeal, then
Color temperature value corresponding to each piecemeal can be averaged, to obtain current environment color temperature value.
In step S306, according to above-mentioned colour temperature, white balance processing is carried out to selected image；
In the embodiment of the present application, in addition to " the correspondence of colour temperature-pixel value described in step S305 can be preserved
Except information ", it is also necessary to when the preset solid background that colour cast occurs is modified to normal color by preservation, the correction value of pixel value
Size is (since preset solid background is under high color temperature and low color temperature, it may occur that colour cast, therefore, this is default under different-colour
Solid background will present different colors, that is, have different pixel values, the preset of colour cast will can occurs in we in advance
When solid background is modified to normal color, the correction value size of pixel value, and can be before terminal device manufacture just by " color
The correspondence relationship information of temperature-correction value " is preserved in memory), then, current environment estimated by step S305
Color temperature value, and " correspondence relationship information of colour temperature-correction value " that prestores to the picture of each pixel in selected image
Plain value is modified.
The embodiment of the present application two provides another method of estimation to current environment colour temperature, due to the embodiment of the present application two
The method provided be when overlapping background area be preset solid background, such as blue when, can just go estimation current environment
Colour temperature, therefore, estimated colour temperature will not it is too high will not be too low, so will not be too to the adjusting of selected image
Greatly, therefore, it is possible to prevente effectively from color temperature estimation is super caused by solid background is identified as white by traditional white balance algorithm
High color temperature or ultralow colour temperature, the too serious problem of image entirety colour cast after avoiding white balance from handling.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, the implementation process without coping with the embodiment of the present application constitutes any limit
It is fixed.
Embodiment three
The embodiment of the present application three provides a kind of image processing apparatus, for purposes of illustration only, only showing relevant with the application
Part, as shown in figure 5, image processing apparatus 500 includes：
Image collection module 501 for obtaining multiple images, and judges whether multiple above-mentioned images are to be clapped in the same area
The image taken the photograph；
Background area determining module 502, if being the image shot in the same area for multiple above-mentioned images, it is determined that on
State the overlapping background area of multiple images；
Statistics with histogram module 503, the color histogram for counting above-mentioned overlapping background area；
Solid background judgment module 504, for according to above-mentioned color histogram, judge above-mentioned overlapping background area whether be
Preset solid background；
White balance processing module 505, if for above-mentioned overlapping background area be preset solid background, from it is above-mentioned multiple
An image is selected in image, and white balance processing is carried out to selected image according to above-mentioned overlapping background area.
Optionally, above-mentioned background area determining module 502, including：
Overlapping region determination unit, for according to image matching algorithm, determining the overlapping region of multiple above-mentioned images；
Object detection unit, for detecting the goal-selling in above-mentioned overlapping region；
If background area determination unit obtains above-mentioned goal-selling for including goal-selling in above-mentioned overlapping region
The region at place, and according to the region where above-mentioned goal-selling, determine above-mentioned overlapping background area, wherein the above-mentioned overlapping back of the body
Scene area is formed by removing above-mentioned goal-selling region in above-mentioned overlapping region.
Optionally, above-mentioned solid background judgment module 504, including：
Default histogram acquiring unit, for obtaining the corresponding pre-set color histogram of above-mentioned preset solid background；
Similarity mode unit, for above-mentioned color histogram and above-mentioned pre-set color histogram to be carried out similarity
Match；
First solid background judging unit, if the similarity for above-mentioned color histogram and above-mentioned pre-set color histogram
More than preset similarity threshold, then it is assumed that above-mentioned overlapping background area is above-mentioned preset solid background；
Second solid background judging unit, if the similarity for above-mentioned color histogram and above-mentioned pre-set color histogram
Less than or equal to above-mentioned similarity threshold, then it is assumed that above-mentioned overlapping background area is not above-mentioned preset solid background.
Optionally, above-mentioned image collection module 501 is specifically used for：
When receiving user's shooting instruction, while multiple images are shot, and using multiple captured images as above-mentioned
Multiple images, and judge whether multiple above-mentioned images are the image shot in the same area.
Optionally, above-mentioned image collection module 501, including：
Interval and speed acquiring unit, for obtaining the shooting time between adjacent two images in multiple above-mentioned images
Interval, and when shooting multiple above-mentioned images terminal device average movement speed；
First judging unit, if be respectively less than default shooting for the shooting time interval between above-mentioned adjacent two images
It is long, and above-mentioned average movement speed is less than default movement speed, it is determined that multiple above-mentioned images are the figure shot in the same area
Picture；
Second judgment unit, if being greater than or equal to for the shooting time interval between above-mentioned adjacent two images above-mentioned pre-
If shooting duration of video, alternatively, above-mentioned average movement speed is greater than or equal to above-mentioned default movement speed, it is determined that multiple above-mentioned images
It is not the image shot in the same area.
Optionally, above-mentioned white balance processing module 505, including：
Color temperature estimation unit is estimated for the color of the preset solid background corresponding to above-mentioned overlapping background area
Count the colour temperature of current environment；
White balance processing unit, for according to above-mentioned colour temperature, white balance processing to be carried out to selected image.
It should be noted that the contents such as information exchange, implementation procedure between above-mentioned apparatus/unit, due to the application
Embodiment of the method is based on same design, concrete function and the technique effect brought, for details, reference can be made to embodiment of the method part, this
Place repeats no more.
Example IV
Fig. 6 is the schematic diagram for the terminal device that the embodiment of the present application four provides.As shown in fig. 6, the terminal of the embodiment is set
Standby 6 include：Processor 60, memory 61 and it is stored in the meter that can be run in above-mentioned memory 61 and on above-mentioned processor 60
Calculation machine program 62.Above-mentioned processor 60 realizes the step in above-mentioned each embodiment of the method when executing above computer program 62,
Such as step S101 to S105 shown in FIG. 1.Alternatively, being realized when the execution above computer program 62 of above-mentioned processor 60 above-mentioned each
The function of each module/unit in device embodiment, for example, module 501 to 505 shown in Fig. 5 function.
Illustratively, above computer program 62 can be divided into one or more module/units, said one or
Multiple module/units are stored in above-mentioned memory 61, and are executed by above-mentioned processor 60, to complete the application.Above-mentioned one
A or multiple module/units can be the series of computation machine program instruction section that can complete specific function, which is used for
Implementation procedure of the above computer program 62 in above-mentioned terminal device 6 is described.For example, above computer program 62 can be divided
It is cut into image collection module, background area determining module, statistics with histogram module, solid background judgment module and white balance processing
Module, each module concrete function are as follows：
Multiple images are obtained, and judge whether multiple above-mentioned images are the image shot in the same area；
If multiple above-mentioned images are the image shot in the same area,：
Determine the overlapping background area of multiple above-mentioned images；
Count the color histogram of above-mentioned overlapping background area；
According to above-mentioned color histogram, judge whether above-mentioned overlapping background area is preset solid background；
If above-mentioned overlapping background area is preset solid background, an image is selected from multiple above-mentioned images, and
White balance processing is carried out to selected image according to above-mentioned overlapping background area.
Above-mentioned terminal device 6 can be the computing devices such as smart mobile phone, tablet computer, learning machine, intelligent wearable device.On
It states terminal device may include, but is not limited only to, processor 60, memory 61.It will be understood by those skilled in the art that Fig. 6 is only
It is the example of terminal device 6, does not constitute the restriction to terminal device 6, may include components more more or fewer than diagram, or
Person combines certain components or different components, such as above-mentioned terminal device can also include input-output equipment, network insertion
Equipment, bus etc..
Alleged processor 60 can be central processing unit (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor can also be any conventional processor
Deng.
Above-mentioned memory 61 can be the internal storage unit of above-mentioned terminal device 6, such as the hard disk of terminal device 6 or interior
It deposits.Above-mentioned memory 61 can also be to be equipped on the External memory equipment of above-mentioned terminal device 6, such as above-mentioned terminal device 6
Plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card dodge
Deposit card (Flash Card) etc..Further, above-mentioned memory 61 can also both include the storage inside list of above-mentioned terminal device 6
Member also includes External memory equipment.Above-mentioned memory 61 is for storing needed for above computer program and above-mentioned terminal device
Other programs and data.Above-mentioned memory 61 can be also used for temporarily storing the data that has exported or will export.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each work(
Can unit, module division progress for example, in practical application, can be as needed and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of above-mentioned apparatus are divided into different functional units or module, more than completion
The all or part of function of description.Each functional unit, module in embodiment can be integrated in a processing unit, also may be used
It, can also be above-mentioned integrated during two or more units are integrated in one unit to be that each unit physically exists alone
The form that hardware had both may be used in unit is realized, can also be realized in the form of SFU software functional unit.In addition, each function list
Member, the specific name of module are also only to facilitate mutually distinguish, the protection domain being not intended to limit this application.Above system
The specific work process of middle unit, module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, depends on the specific application and design constraint of technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
Scope of the present application.
In embodiment provided herein, it should be understood that disclosed device/terminal device and method, it can be with
It realizes by another way.For example, device described above/terminal device embodiment is only schematical, for example, on
The division of module or unit is stated, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as
Multiple units or component can be combined or can be integrated into another system, or some features can be ignored or not executed.Separately
A bit, shown or discussed mutual coupling or direct-coupling or communication connection can be by some interfaces, device
Or INDIRECT COUPLING or the communication connection of unit, can be electrical, machinery or other forms.
The above-mentioned unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If above-mentioned integrated module/unit be realized in the form of SFU software functional unit and as independent product sale or
In use, can be stored in a computer read/write memory medium.Based on this understanding, the application realizes above-mentioned implementation
All or part of flow in example method, can also instruct relevant hardware to complete, above-mentioned meter by computer program
Calculation machine program can be stored in a computer readable storage medium, the computer program when being executed by processor, it can be achieved that on
The step of stating each embodiment of the method.Wherein, above computer program includes computer program code, above computer program generation
Code can be source code form, object identification code form, executable file or certain intermediate forms etc..Above computer readable medium
May include：Any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic of above computer program code can be carried
Dish, CD, computer storage, read-only memory (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It should be noted that above-mentioned
The content that computer-readable medium includes can carry out increasing appropriate according to legislation in jurisdiction and the requirement of patent practice
Subtract, such as in certain jurisdictions, according to legislation and patent practice, computer-readable medium does not include electric carrier signal and electricity
Believe signal.
Above above-described embodiment is only to illustrate the technical solution of the application, rather than its limitations；Although with reference to aforementioned reality
Example is applied the application is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each
Technical solution recorded in embodiment is modified or equivalent replacement of some of the technical features；And these are changed
Or replace, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution should all
Within the protection domain of the application.
Claims (10)
1. a kind of image processing method, which is characterized in that including：
Multiple images are obtained, and judge whether multiple described images are the image shot in the same area；
If multiple described images are the image shot in the same area,：
Determine the overlapping background area of multiple images；
Count the color histogram of the overlapping background area；
According to the color histogram, judge whether the overlapping background area is preset solid background；
If the overlapping background area is preset solid background, one image of selection from multiple described images, and according to
The overlapping background area carries out white balance processing to selected image.
2. image processing method as described in claim 1, which is characterized in that the overlapping background of multiple images described in the determination
Region, including：
According to image matching algorithm, the overlapping region of multiple images is determined；
Detect the goal-selling in the overlapping region；
If including goal-selling in the overlapping region, the region where the goal-selling is obtained, and according to described default
Region where target determines the overlapping background area, wherein the overlapping background area in the overlapping region by removing
The goal-selling region composition.
3. image processing method as described in claim 1, which is characterized in that it is described according to the color histogram, judge institute
State whether overlapping background area is preset solid background, including：
Obtain the corresponding pre-set color histogram of the preset solid background；
The color histogram and the pre-set color histogram are subjected to similarity mode；
If the similarity of the color histogram and the pre-set color histogram is more than preset similarity threshold, then it is assumed that institute
It is the preset solid background to state overlapping background area；
If the similarity of the color histogram and the pre-set color histogram is less than or equal to the similarity threshold, recognize
It is not the preset solid background for the overlapping background area.
4. image processing method as described in claim 1, which is characterized in that described multiple images of acquisition, including：
When receiving user's shooting instruction, while shooting multiple images.
5. image processing method as described in claim 1, which is characterized in that whether multiple images described in the judgement are same
The image of one region shooting, including：
The shooting time interval between adjacent two images in multiple described images is obtained, and in multiple described images of shooting
When terminal device average movement speed；
If the shooting time interval between adjacent two images is respectively less than default shooting duration of video, and the average movement speed
Less than default movement speed, it is determined that multiple described images are the image shot in the same area；
If the shooting time interval between adjacent two images is greater than or equal to the default shooting duration of video, alternatively, described
Average movement speed is greater than or equal to the default movement speed, it is determined that multiple described images are shot in the same area
Image.
6. the image processing method as described in any one of claim 1 to 5, which is characterized in that described to be carried on the back according to the overlapping
Scene area carries out white balance processing to selected image, including：
The color of preset solid background corresponding to the overlapping background area, estimates the colour temperature of current environment；
According to the colour temperature, white balance processing is carried out to selected image.
7. a kind of image processing apparatus, which is characterized in that including：
Image collection module for obtaining multiple images, and judges whether multiple described images are the figure shot in the same area
Picture；
Background area determining module, if being the image shot in the same area for multiple described images, it is determined that it is described multiple
The overlapping background area of image；
Statistics with histogram module, the color histogram for counting the overlapping background area；
Solid background judgment module, for according to the color histogram, judging whether the overlapping background area is preset
Solid background；
White balance processing module, if being preset solid background for the overlapping background area, from multiple described images
An image is selected, and white balance processing is carried out to selected image according to the overlapping background area.
8. image processing apparatus as claimed in claim 7, which is characterized in that the background area determining module includes：
Overlapping region determination unit, for according to image matching algorithm, determining the overlapping region of multiple images；
Object detection unit, for detecting the goal-selling in the overlapping region；
Background area determination unit obtains the goal-selling place if for including goal-selling in the overlapping region
Region, and according to the region where the goal-selling, determine the overlapping background area, wherein the overlapping background area
Domain is formed by removing the goal-selling region in the overlapping region.
9. a kind of terminal device, including memory, processor and it is stored in the memory and can be on the processor
The computer program of operation, which is characterized in that the processor realizes such as claim 1 to 6 when executing the computer program
The step of any one the method.
10. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, feature to exist
In when the computer program is executed by processor the step of any one of such as claim 1 to 6 of realization the method.
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