CN107172296A - A kind of image capturing method and mobile terminal - Google Patents
A kind of image capturing method and mobile terminal Download PDFInfo
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- CN107172296A CN107172296A CN201710481876.6A CN201710481876A CN107172296A CN 107172296 A CN107172296 A CN 107172296A CN 201710481876 A CN201710481876 A CN 201710481876A CN 107172296 A CN107172296 A CN 107172296A
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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
- H04N23/95—Computational photography systems, e.g. light-field imaging systems
- H04N23/951—Computational photography systems, e.g. light-field imaging systems by using two or more images to influence resolution, frame rate or aspect ratio
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
- H04M1/72439—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for image or video messaging
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
Abstract
The present invention provides a kind of image capturing method and mobile terminal, solves during existing take pictures because the problem of shake causes image blurring, this method includes：The N frame preview images of camera collection are obtained, and the N frames preview image is added to image buffer storage queue；Calculate the definition values of the target area in the N frames preview image per frame preview image；If receiving photographing instruction, the definition values highest preview image of target area in described image buffer queue is defined as target image, the target image is exported；Wherein, N is the integer more than 0.So by the way that definition values highest preview image in target area in image buffer storage queue as target image, to be solved to the problem of causing image blurring due to shake during existing take pictures, target area clearly image is resulted in when shooting.
Description
Technical field
The present invention relates to technical field of image processing, more particularly to a kind of image capturing method and mobile terminal.
Background technology
With the development of terminal technology, camera has become the standard configuration of big multi-terminal equipment, provides the user bat
According to function, give people live and work and bring great enjoyment and conveniently, and the pixel also more and more higher of camera, it is intended to
User is allowed to photograph the photo of better quality.
However, user is when using terminal equipment is taken pictures, it will usually because many reasons cause shake, in turn result in
Take pictures image blurring, second-rate.For example, in some dark scenes partially, user can typically be taken pictures the exposure of image by extension
Time, to obtain better image effect；But the extension of time for exposure, the hand for holding mobile terminal can be caused easily to tremble
Dynamic phenomenon, and then cause the image blurring situation of shooting.It can be seen that, it is existing take pictures during due to shake cause image mould
The problem of paste.
The content of the invention
The embodiment of the present invention provides a kind of image capturing method and mobile terminal, to solve during taking pictures because shake is led
The problem of causing image blurring.
In a first aspect, the embodiments of the invention provide a kind of image capturing method, applied to the mobile end including camera
End, including：
The N frame preview images of camera collection are obtained, and the N frames preview image is added to image buffer storage queue；
Calculate the definition values of the target area in the N frames preview image per frame preview image；
If receiving photographing instruction, by the definition values highest preview graph of target area in described image buffer queue
As being defined as target image, the target image is exported；
Wherein, N is the integer more than 0.
Second aspect, the embodiment of the present invention also provides a kind of mobile terminal, including camera, and the mobile terminal is also wrapped
Include：
Acquisition module, the N frame preview images for obtaining camera collection, and the N frames preview image is added to figure
As buffer queue；
Computing module, the definition values for calculating the target area in the N frames preview image per frame preview image；
Output module, if for receiving photographing instruction, by the definition of target area in described image buffer queue
Value highest preview image is defined as target image, exports the target image；
Wherein, N is the integer more than 0.
The third aspect, the embodiment of the present invention also provides a kind of mobile terminal, including processor, memory and is stored in described
On memory and the computer program that can run on the processor, the computer program is by real during the computing device
The step of existing above-mentioned image capturing method.
Fourth aspect, the embodiment of the present invention also provides a kind of computer-readable recording medium, the computer-readable storage
Be stored with computer program on medium, and the computer program realizes the step of above-mentioned image capturing method when being executed by processor
Suddenly.
So, in the embodiment of the present invention, the N frame preview images of camera collection are obtained, and the N frames preview image is added
Add to image buffer storage queue；Calculate the definition values of the target area in the N frames preview image per frame preview image；If receiving
To photographing instruction, then the definition values highest preview image of target area in described image buffer queue is defined as target figure
Picture, exports the target image；Wherein, N is the integer more than 0.So by the way that target area in image buffer storage queue is clear
Angle value highest preview image is solved during existing take pictures because shake causes image blurring ask as target image
Topic, target area clearly image is resulted in when shooting.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed for description of the embodiment of the present invention
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention,
For those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of flow chart of image capturing method provided in an embodiment of the present invention；
Fig. 2 is the flow chart of another image capturing method provided in an embodiment of the present invention；
Fig. 3 is the flow chart of another image capturing method provided in an embodiment of the present invention；
Fig. 4 is a kind of structure chart of mobile terminal provided in an embodiment of the present invention；
Fig. 5 is the structure chart of another mobile terminal provided in an embodiment of the present invention；
Fig. 6 is one of structure chart of determining module in mobile terminal provided in an embodiment of the present invention；
Fig. 7 is the two of the structure chart of determining module in mobile terminal provided in an embodiment of the present invention；
Fig. 8 is the three of the structure chart of determining module in mobile terminal provided in an embodiment of the present invention；
Fig. 9 is the structure chart of computing module in mobile terminal provided in an embodiment of the present invention；
Figure 10 is the structure chart of output module in mobile terminal provided in an embodiment of the present invention；
Figure 11 is the structure chart of another mobile terminal provided in an embodiment of the present invention；
Figure 12 is the structure chart of another mobile terminal provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
Referring to Fig. 1, Fig. 1 is a kind of flow chart of image capturing method provided in an embodiment of the present invention, as shown in figure 1, should
Image capturing method is applied to include the mobile terminal of camera, comprises the following steps：
Step 101, the N frame preview images for obtaining camera collection, and the N frames preview image is added to image buffer storage
Queue.
In the step, the application program of taking pictures of mobile terminal is opened, the N frame previews of the camera collection of mobile terminal are obtained
Image, and N frames preview image is added in image buffer storage queue.Wherein N is the integer more than 0.
It should be noted that during preview image is gathered, when collecting new preview image, it is necessary to judge figure
As whether the frame number of preview image in buffer queue reaches default frame number, when judged result is to be, then by image buffer storage queue
Earliest preview image of middle generation time is deleted, and the preview image newly obtained is added into image buffer storage queue；When judgement knot
When fruit is no, then the preview image newly obtained is added to image buffer storage queue.Wherein, presetting the quantity of frame number can voluntarily set
Put, such as, default frame number could be arranged to 6 in the specific embodiment of the present invention.
Step 102, the definition values for calculating the target area of every frame preview image in the N frames preview image.
In the step, a target area can be determined in each frame preview image, and calculate each frame preview image
Target area definition values.Wherein, the target area can be image taking interface a certain specific region or
User specifies the region of selection.And the definition values of target area can be obtained by Image Definition, specifically
The definition values of target area can be obtained according to the gray value of each pixel in the size of target area and target area.Pass through
The definition values of target area in preview image are obtained, compared to the definition values for obtaining whole preview image, can significantly be contracted
Subtract the data amount of calculation of definition values, improve the calculating speed of the definition values of the target area of each frame preview image.
If step 103, photographing instruction is received, by the definition values highest of target area in described image buffer queue
Preview image be defined as target image, export the target image.
In the step, if photographing instruction is received, and by definition values highest in target area in image buffer storage queue
Preview image is used as target image.And according to photographing instruction, target area definition values highest preview image is encoded
Compression, forms certain picture format, such as JPEG (Joint Photographic Experts Group, joint image expert
Group) form, exported as target image, for users to use or appreciation.
Wherein, the triggering mode of photographing instruction, can be that user clicks on shoot button triggering or mobile terminal
Under delay exposal model, the delay arrival time triggering of taking pictures of mobile terminal.
It should be noted that when receiving photographing instruction, it can be determined that the preview image in present image buffer queue
Frame number whether reach default frame number, if the determination result is YES, then export target image；If judged result is no, it is delayed defeated
Go out target image, and camera continues to gather preview image during being delayed, until the frame of preview image in image buffer storage queue
Number reaches predetermined number.In this way, it can be selected from more candidate's preview images, it is relatively clear to obtain
Image, meet demand of the user to clear pictures.
Explanation is needed further exist for, as a kind of preferred embodiment of the embodiment of the present invention, in the mistake of output target image
Cheng Zhong, first can enter all preview images in described image buffer queue from high to low according to the definition values of target area
Row sequence；Then the preview image ranked the first in the described image buffer queue after sequence is defined as target image, exported
The target image.By being ranked up to the preview image in image buffer storage queue, and according to the output target figure that puts in order
Picture, can further lift the output speed of target image.
In the embodiment of the present invention, above-mentioned mobile terminal can be with any mobile terminal for possessing camera, such as：It is mobile phone, flat
Plate computer (Tablet Personal Computer), laptop computer (Laptop Computer), mobile Internet access device
(Mobile Internet Device, MID) or wearable device (Wearable Device) etc..
The image capturing method of the embodiment of the present invention, obtains the N frame preview images of camera collection, and the N frames is pre-
Image of looking at is added to image buffer storage queue；Calculate the definition of the target area in the N frames preview image per frame preview image
Value；It is if receiving photographing instruction, the definition values highest preview image of target area in described image buffer queue is true
It is set to target image, exports the target image；Wherein, N is the integer more than 0.So by by mesh in image buffer storage queue
Region definition values highest preview image is marked as target image, is solved during existing take pictures because shake causes figure
As the problem of fuzzy, target area clearly image is resulted in when shooting.
Referring to Fig. 2, Fig. 2 is the flow chart of another image capturing method provided in an embodiment of the present invention, as shown in Fig. 2
Comprise the following steps：
Step 201, the N frame preview images for obtaining camera collection, and the N frames preview image is added to image buffer storage
Queue.
In the step, the application program of taking pictures of mobile terminal is opened, the N frame previews of the camera collection of mobile terminal are obtained
Image, and N frames preview image is added in image buffer storage queue.Wherein N is the integer more than 0.
Step 202, the target area for determining every frame preview image in the N frames preview image.
In the step, a target area can be determined by every frame preview image in N frame preview images, it is so pre- by obtaining
Look at the definition values of objective area in image, can be clear with Reduction Computation compared to the definition values for obtaining whole preview image
The data volume of information is spent, the calculating speed of the definition values of the target area of each frame preview image is improved.Wherein, per frame preview
The determination of the target area of image, can be using a certain specific region at image taking interface as every frame preview image target
Region, can also specify the region of selection to be used as the target area of every frame preview image user.
It should be noted that user can be according to photographed scene or shooting requirement definition per his target area of frame preview
Domain.
Step 203, the definition values for calculating the target area of every frame preview image in the N frames preview image.
In the step, a target area can be determined in each frame preview image, and calculate each frame preview image
Target area definition values.Wherein, the target area can be image taking interface a certain specific region or
User specifies the region of selection.And the definition values of target area can be obtained by Image Definition, specifically
The definition values of target area can be obtained according to the gray value of each pixel in the size of target area and target area.Pass through
The definition values of target area in preview image are obtained, compared to the definition values for obtaining whole preview image, can significantly be contracted
Subtract the data amount of calculation of definition values, improve the calculating speed of the definition values of the target area of each frame preview image.
If step 204, photographing instruction is received, by the definition values highest of target area in described image buffer queue
Preview image be defined as target image, export the target image.
In the step, if photographing instruction is received, and by definition values highest in target area in image buffer storage queue
Preview image is used as target image.And according to photographing instruction, target area definition values highest preview image is encoded
Compression, forms certain picture format, such as JPEG (Joint Photographic Experts Group, joint image expert
Group) form, exported as target image, for users to use or appreciation.
Optionally, in the determination N frames preview image the step of target area of every frame preview image, including：
For, per frame preview image, identification is per the face characteristic information in frame preview image in the N frames preview image；
Image-region where the face characteristic information is defined as the target area.
In the embodiment, for every frame preview image in N frame preview images, it is possible to use face recognition technology, identification
Face characteristic information in per preview image；And image-region where face characteristic information is defined as to the mesh of every frame preview image
Mark region.
Specifically, the N frames preview image in image buffer storage queue can be numbered by the sequencing of collection, such as
Can be 1 by the preview image gathered at first in image buffer storage queue numbering, most freshly harvested preview image numbering is N, and root
According to sharpness evaluation function, definition values FV_X and corresponding sequence number X in face characteristic region per frame preview image are obtained, its
Middle X scope is 0~N.Then contrasted according to obtained definition values, obtain the maximum FV_max=FV_X of definition values
And corresponding sequence number X, it is determined that X frames preview image is most clear in face characteristic region for each preview image in cache image queue
Clear picture, and X frame preview images are exported as target image.So, facial image region is defined as target area,
Can be given prominence to the key points the definition of face, so as to obtain face clearly image.
Optionally, in the determination N frames preview image the step of target area of every frame preview image, including：
Detect the touch-control focus operation in shooting preview interface；
If detecting touch-control focus operation, the corresponding focusing area of the touch-control focus operation is obtained；
The focusing area is defined as the target area.
, can be by detecting the touch-control focus operation in shooting preview interface, when detecting touch-control pair in the embodiment
During Jiao's operation, then the corresponding focusing area of the touch-control focus operation is obtained, and regard the focusing area as every frame preview image
Target area.
Specifically, the N frames preview image in image buffer storage queue can be numbered by the sequencing of collection, such as
Can be 1 by the preview image gathered at first in image buffer storage queue numbering, most freshly harvested preview image numbering is N, and root
According to sharpness evaluation function, definition values FV_X and corresponding sequence number X, wherein X in focusing area per frame preview image are obtained
Scope be 0~N.Then contrasted according to obtained definition values, obtain definition values maximum FV_max=FV_X and
Corresponding sequence number X, it is determined that X frames preview image is most clearly schemed for each preview image in cache image queue in focusing area
Piece, and X frame preview images are exported as target image.So, user can by touch-control focus operation it is corresponding any one
Focusing area is defined as target area, so as to obtain the desired target area of user clearly image.
Optionally, in the determination N frames preview image the step of target area of every frame preview image, including：
Detect the touch control operation in shooting preview interface；
If detecting touch control operation, obtain per the corresponding image-region of touch control operation described in frame preview image；
Extract the characteristics of image in described image region；
Based on described image feature, there are all image-regions of described image feature in the every frame preview image of identification；
All image-regions for having described image feature in the preview image per frame are defined as the target area.
In the embodiment, user can choose a region in shooting preview interface, and recognize the figure in the region
Recognized as feature, and based on the characteristics of image per all image-regions in frame preview image with the characteristics of image, and will be every
All image-regions with the characteristics of image are defined as target area in frame preview image.
For example, have face A and face B in shooting preview interface, when detecting in shooting preview interface user to face A's
During touch control operation, then obtain per the corresponding image-region of touch control operation in frame preview image, extract the figure in described image region
As being characterized as face characteristic, then recognize per all image-regions in frame preview image with face characteristic, identify the institute
Image-region where thering is image-region to include face A and face B places image-region, by image-region where face A and face B
Place image-region is defined as target area.So, when user chooses an object, the object with being chosen can be automatically identified
There are all objects of same characteristic features, the object of all specific same characteristic features carried out to the calculating of definition values as target area,
Do not need user repeatedly to select multiple objects, simplify the selection operation of the target area of user, simple operation.
Explanation is needed further exist for, the priority of touch screen focus operation is higher than recognition of face in the shooting process of image
Priority, i.e., be also that touch screen is focused even if there is face characteristic information in preview image when detecting touch screen focus operation
The corresponding focusing area of operation is used as target area as target area, rather than using face characteristic information region.
The image capturing method of the embodiment of the present invention, obtains the N frame preview images of camera collection, and the N frames is pre-
Image of looking at is added to image buffer storage queue；Determine the target area per frame preview image in the N frames preview image；Calculate described
The definition values of target area in N frame preview images per frame preview image；If receiving photographing instruction, described image is delayed
The definition values highest preview image for depositing target area in queue is defined as target image, exports the target image.So
By the way that as target image, definition values highest preview image in target area in image buffer storage queue is solved into existing bat
The problem of causing image blurring due to shake according to during, target area clearly image is resulted in when shooting.
Referring to Fig. 3, Fig. 3 is the flow chart of another image capturing method provided in an embodiment of the present invention, as shown in figure 3,
Comprise the following steps：
Step 301, the N frame preview images for obtaining camera collection, and the N frames preview image is added to image buffer storage
Queue.
In the step, the application program of taking pictures of mobile terminal is opened, the N frame previews of the camera collection of mobile terminal are obtained
Image, and N frames preview image is added in image buffer storage queue.Wherein N is the integer more than 0.
Step 302, for every frame preview image, according to the size of the target area of every frame preview image and each pixel
Gray value, calculates the definition values of the target area per frame preview image.
In the step, a target area can be determined in each frame preview image, and calculate each frame preview image
Target area definition values.Wherein, the target area can be image taking interface a certain specific region or
User specifies the region of selection.And the definition values of target area can be obtained by Image Definition, specifically
The definition values of target area can be obtained according to the gray value of each pixel in the size of target area and target area.Pass through
The definition values of target area in preview image are obtained, compared to the definition values for obtaining whole preview image, can significantly be contracted
Subtract the data amount of calculation of definition values, improve the calculating speed of the definition values of the target area of each frame preview image.
If step 303, photographing instruction is received, by the definition values highest of target area in described image buffer queue
Preview image be defined as target image, export the target image.
In the step, if photographing instruction is received, and by definition values highest in target area in image buffer storage queue
Preview image is used as target image.And according to photographing instruction, target area definition values highest preview image is encoded
Compression, forms certain picture format, such as JPEG (Joint Photographic Experts Group, joint image expert
Group) form, exported as target image, for users to use or appreciation.
Specifically, the N frames preview image in image buffer storage queue can be numbered by the sequencing of collection, such as
Can be 1 by the preview image gathered at first in image buffer storage queue numbering, most freshly harvested preview image numbering is N, and root
According to sharpness evaluation function, definition values FV_X and corresponding sequence number X, wherein X in target area per frame preview image are obtained
Scope be 0~N.Then contrasted according to obtained definition values, obtain definition values maximum FV_max=FV_X and
Corresponding sequence number X, it is determined that X frames preview image is most clearly schemed for each preview image in cache image queue in target area
Piece, and X frame preview images are exported as target image.
Optionally, it is described for every frame preview image, according to the size and each pixel of the target area of every frame preview image
The gray value of point, the step of calculating the definition values per the target area of frame preview image, including：
Obtain the size and the gray value of each pixel of the target area of every frame preview image；
Calculate square of the difference of the gray value of all two adjacent pixels in the target area；
To square progress summation operation of the difference of the gray value of all two adjacent pixels in the target area, and
Summation operation is obtained and value is defined as the definition values of the target area of every frame preview image.
In the embodiment, size and target area each pixel of the acquisition per the target area of frame preview image can be passed through
The gray value of point, and square of the difference of the gray value of all two adjacent pixels in target area is calculated, and to target area
In domain the difference of the gray value of all two adjacent pixels square carry out summation operation, and summation operation is obtained and value
It is defined as the definition values of the target area of every frame preview image.
Specifically, the definition values of target area can be obtained by Image Definition, definition evaluates letter
Number is as follows：
Wherein, Fsq gradDefinition values are represented, f (x, y) represents the gray value at pixel (x, y) place in target area, f
(x, y+1) represents the gray value at pixel (x, y+1) place in target area, and M, N represent that target area is in x, y direction respectively
Pixel quantity in pixel quantity, i.e. target area is M × N number of,Represent adjacent two picture in target area
The summation operation of the gray value differences square of vegetarian refreshments.
The image capturing method of the embodiment of the present invention, obtains the N frame preview images of camera collection, and the N frames is pre-
Image of looking at is added to image buffer storage queue；For every frame preview image, according to the size of the target area of every frame preview image and
The gray value of each pixel, calculates the definition values of the target area per frame preview image；If receiving photographing instruction, by institute
The definition values highest preview image for stating target area in image buffer storage queue is defined as target image, exports the target figure
Picture.So by the way that definition values highest preview image in target area in image buffer storage queue, as target image, is solved
It is existing take pictures during due to the problem of shake causes image blurring, resulting in target area when shooting and clearly scheme
Picture.
Referring to Fig. 4, Fig. 4 is the structure chart for the mobile terminal that the present invention implements offer, as shown in figure 4, mobile terminal 400 is wrapped
Acquisition module 401, computing module 402 and output module 403 are included, wherein, acquisition module 401 and computing module 402 are connected, and meter
Module 402 is calculated also to be connected with output module 403：
Acquisition module 401, for obtaining the N frame preview images of camera collection, and the N frames preview image is added to
Image buffer storage queue；
Computing module 402, the definition for calculating the target area in the N frames preview image per frame preview image
Value；
Output module 403, if for receiving photographing instruction, by described image buffer queue target area it is clear
Angle value highest preview image is defined as target image, exports the target image；
Wherein, N is the integer more than 0.
Optionally, as shown in figure 5, the mobile terminal 400 also includes：
Determining module 404, for determining the target area in the N frames preview image per frame preview image.
Optionally, as shown in fig. 6, the determining module 404 includes：
First identification submodule 40401, for for, per frame preview image, identification is pre- per frame in the N frames preview image
The face characteristic information look in image；
First determination sub-module 40402, for image-region where the face characteristic information to be defined as into the target
Region.
Optionally, as shown in fig. 7, the determining module 404 includes：
First detection sub-module 40403, for detecting the touch-control focus operation in shooting preview interface；
First acquisition submodule 40404, if for detecting touch-control focus operation, obtaining the touch-control focus operation pair
The focusing area answered；
Second determination sub-module 40405, for the focusing area to be defined as into the target area.
Optionally, as shown in figure 8, the determining module 404 includes：
Second detection sub-module 40406, for detecting the touch control operation in shooting preview interface；
Second acquisition submodule 40407, if for detecting touch control operation, obtaining per touch-control described in frame preview image
Operate corresponding image-region；
Extracting sub-module 40408, for extracting the characteristics of image in described image region；
Second identification submodule 40409, for based on described image feature, to there is the figure in the every frame preview image of identification
As all image-regions of feature；
3rd determination sub-module 40410, for all figures that will there is described image feature in the preview image per frame
As region is defined as the target area.
Optionally, the computing module 402 is used for for every frame preview image, according to the target area of every frame preview image
Size and each pixel gray value, calculate the definition values of the target area per frame preview image.
Optionally, as shown in figure 9, the computing module 402 includes：
3rd acquisition submodule 4021, size and the ash of each pixel for the target area that obtains every frame preview image
Angle value；
Calculating sub module 4022, the difference for calculating the gray value of all two adjacent pixels in the target area
Square；
4th determination sub-module 4023, for the gray value to all two adjacent pixels in the target area it
Difference square carry out summation operation, and summation operation is obtained and value be defined as every frame preview image target area it is clear
Angle value.
Optionally, as shown in Figure 10, the output module 403 includes：
Sorting sub-module 4031, for by all preview images in described image buffer queue according to the clear of target area
Clear angle value is ranked up from high to low；
Output sub-module 4032, the preview image for will be ranked the first in the described image buffer queue after sequence is determined
For target image, the target image is exported.
Mobile terminal 400 can realize each process that mobile terminal is realized in Fig. 1 to Fig. 3 embodiment of the method, to keep away
Exempt to repeat, repeat no more here.
The mobile terminal of the embodiment of the present invention, obtains the N frame preview images of camera collection, and by the N frames preview graph
As being added to image buffer storage queue；Calculate the definition values of the target area in the N frames preview image per frame preview image；If
Photographing instruction is received, then the definition values highest preview image of target area in described image buffer queue is defined as mesh
Logo image, exports the target image；Wherein, N is the integer more than 0.So by by target area in image buffer storage queue
Definition values highest preview image as target image, solve during existing take pictures due to shake cause it is image blurring
The problem of, result in target area clearly image when shooting.
The embodiment of the present invention also provides a kind of mobile terminal, including processor, memory, is stored on the memory simultaneously
The computer program that can be run on the processor, realizes above-mentioned image when the computer program is by the computing device
Each process of image pickup method embodiment, and identical technique effect can be reached, to avoid repeating, repeat no more here.
The embodiment of the present invention also provides the meter that is stored with a kind of computer-readable recording medium, computer-readable recording medium
Calculation machine program, the computer program realizes each process of above-mentioned image capturing method embodiment when being executed by processor, and
Identical technique effect can be reached, to avoid repeating, is repeated no more here.Wherein, described computer-readable recording medium, such as
Read-only storage (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation
RAM), magnetic disc or CD etc..
Referring to Figure 11, Figure 11 is the structure chart for the mobile terminal that another implementation of the invention is provided, as shown in figure 11, mobile
Terminal 1100 includes：At least one processor 1101, memory 1102, at least one network interface 1104 and user interface
1103.Each component in mobile terminal 1 100 is coupled by bus system 1105.It is understood that bus system 1105 is used
Connection communication between these components are realized.Bus system 1105 is in addition to including data/address bus, in addition to power bus, control
Bus and status signal bus in addition processed.But for the sake of clear explanation, various buses are all designated as bus system in fig. 8
1105, mobile terminal 1 100 also includes camera 1106, wherein, camera 1106 passes through bus system 1105 and mobile terminal
Each component is connected.
Wherein, user interface 1103 can include display, keyboard or pointing device (for example, mouse, trace ball
(trackball), touch-sensitive plate or touch-screen etc..
It is appreciated that the memory 1102 in the embodiment of the present invention can be volatile memory or non-volatile memories
Device, or may include both volatibility and nonvolatile memory.Wherein, nonvolatile memory can be read-only storage
(Read-Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), erasable programmable are only
Read memory (Erasable PROM, EPROM), Electrically Erasable Read Only Memory (Electrically EPROM,
) or flash memory EEPROM.Volatile memory can be random access memory (Random Access Memory, RAM), and it is used
Make External Cache.By exemplary but be not restricted explanation, the RAM of many forms can use, such as static random-access
Memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random-access
Memory (Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data
Rate SDRAM, DDRSDRAM), it is enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronous
Connect dynamic random access memory (Synch Link DRAM, SLDRAM) and direct rambus random access memory
(Direct Rambus RAM, DRRAM).The memory 1102 of system and method described herein be intended to including but not limited to this
The memory of a little and any other suitable type.
In some embodiments, memory 1102 stores following element, can perform module or data structure, or
Their subset of person, or their superset：Operating system 11021 and application program 11022.
Wherein, operating system 11021, comprising various system programs, such as ccf layer, core library layer, driving layer, are used for
Realize various basic businesses and handle hardware based task.Application program 11022, includes various application programs, such as matchmaker
Body player (Media Player), browser (Browser) etc., for realizing various applied business.Realize that the present invention is implemented
The program of example method may be embodied in application program 11022.
In embodiments of the present invention, mobile terminal 1 100 also includes：It is stored on memory 1102 and can be in processor
The computer program run on 1101, can be the computer program in application program 11022, computer program quilt specifically
Processor 1101 realizes following steps when performing：The N frame preview images of camera collection are obtained, and by the N frames preview image
Added to image buffer storage queue；Calculate the definition values of the target area in the N frames preview image per frame preview image；If connecing
Photographing instruction is received, then the definition values highest preview image of target area in described image buffer queue is defined as target
Image, exports the target image；Wherein, N is the integer more than 0.
The method that the embodiments of the present invention are disclosed can apply in processor 1101, or real by processor 1101
It is existing.Processor 1101 is probably a kind of IC chip, the disposal ability with signal.In implementation process, the above method
Each step can be completed by the instruction of the integrated logic circuit of the hardware in processor 1101 or software form.Above-mentioned
Processor 1101 can be general processor, digital signal processor (Digital Signal Processor, DSP), special
Integrated circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field
Programmable Gate Array, FPGA) or other PLDs, discrete gate or transistor logic,
Discrete hardware components.It can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general
Processor can be microprocessor or the processor can also be any conventional processor etc..With reference to institute of the embodiment of the present invention
The step of disclosed method, can be embodied directly in hardware decoding processor and perform completion, or with the hardware in decoding processor
And software module combination performs completion.Software module can be located at random access memory, and flash memory, read-only storage may be programmed read-only
In the ripe storage medium in this area such as memory or electrically erasable programmable memory, register.This is computer-readable to deposit
Storage media is located at memory 1102, and processor 1101 reads the information in memory 1102, and the above method is completed with reference to its hardware
The step of.Specifically, be stored with computer program on the computer-readable recording medium, and computer program is held by processor 1101
Each step such as above-mentioned image capturing method embodiment is realized during row.
It is understood that embodiments described herein can with hardware, software, firmware, middleware, microcode or its
Combine to realize.Realized for hardware, processing unit can be realized in one or more application specific integrated circuit (Application
Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing,
DSP), digital signal processing appts (DSP Device, DSPD), programmable logic device (Programmable Logic
Device, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), general processor,
In controller, microcontroller, microprocessor, other electronic units for performing herein described function or its combination.
Realize, can be realized by performing the module (such as process, function) of function described herein herein for software
Described technology.Software code is storable in memory and by computing device.Memory can within a processor or
Realized outside processor.
Optionally, following steps can be also realized when computer program is performed by processor 1101：Determine the N frames preview graph
Per the target area of frame preview image as in.
Optionally, following steps can be also realized when computer program is performed by processor 1101：For the N frames preview graph
Per frame preview image as in, identification is per the face characteristic information in frame preview image；By image where the face characteristic information
Region is defined as the target area.
Optionally, following steps can be also realized when computer program is performed by processor 1101：Detect shooting preview interface
On touch-control focus operation；If detecting touch-control focus operation, the corresponding focusing area of the touch-control focus operation is obtained；Will
The focusing area is defined as the target area.
Optionally, following steps can be also realized when computer program is performed by processor 1101：Detect shooting preview interface
On touch control operation；If detecting touch control operation, obtain per the corresponding image-region of touch control operation described in frame preview image；
Extract the characteristics of image in described image region；Based on described image feature, there is described image in the every frame preview image of identification
All image-regions of feature；All image-regions for having described image feature in the preview image per frame are defined as institute
State target area.
Optionally, following steps can be also realized when computer program is performed by processor 1101：For every frame preview image,
According to the size of the target area of every frame preview image and the gray value of each pixel, the target area per frame preview image is calculated
Definition values.
Optionally, following steps can be also realized when computer program is performed by processor 1101：Obtain per frame preview image
Target area size and the gray value of each pixel；Calculate the ash of all two adjacent pixels in the target area
Square of the difference of angle value；The difference of the gray value of all two adjacent pixels in the target area square is summed
Computing, and the definition values for the target area for being defined as every frame preview image with value that summation operation is obtained.
Optionally, following steps can be also realized when computer program is performed by processor 1101：Described image is cached into team
All preview images in row are ranked up from high to low according to the definition values of target area；Described image after sequence is delayed
Deposit the preview image ranked the first in queue and be defined as target image, export the target image.
Mobile terminal 1 100 can realize each process that mobile terminal is realized in previous embodiment, to avoid repeating, this
In repeat no more.
The mobile terminal 1 100 of the embodiment of the present invention, obtains the N frame preview images of camera collection, and the N frames is pre-
Image of looking at is added to image buffer storage queue；Calculate the definition of the target area in the N frames preview image per frame preview image
Value；It is if receiving photographing instruction, the definition values highest preview image of target area in described image buffer queue is true
It is set to target image, exports the target image；Wherein, N is the integer more than 0.So by by mesh in image buffer storage queue
Region definition values highest preview image is marked as target image, is solved during existing take pictures because shake causes figure
As the problem of fuzzy, target area clearly image is resulted in when shooting.
Figure 12 is the structural representation of the mobile terminal of another embodiment of the present invention.Specifically, the mobile end in Figure 12
End 1200 can be mobile phone, tablet personal computer, personal digital assistant (Personal Digital Assistant, PDA) or vehicle-mounted
Computer etc..
Mobile terminal 1 200 in Figure 12 include radio frequency (Radio Frequency, RF) circuit 1210, memory 1220,
Input block 1230, display unit 1240, processor 1250, camera 1260, voicefrequency circuit 1270, communication module 1280 and electricity
Source 1290.
Wherein, input block 1230 can be used for the numeral or character information of reception user's input, and produce and mobile whole
The signal input that the user at end 1200 is set and function control is relevant.Specifically, in the embodiment of the present invention, the input block
1230 can include contact panel 1231.Contact panel 1231, also referred to as touch-screen, collect user's touching on or near it
Operation (such as user uses the operations of any suitable object or annex on contact panel 1231 such as finger, stylus) is touched, and
Corresponding attachment means are driven according to formula set in advance.Optionally, contact panel 1231 may include touch detecting apparatus and
Two parts of touch controller.Wherein, touch detecting apparatus detects the touch orientation of user, and detects the letter that touch operation is brought
Number, transmit a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and is converted into
Contact coordinate, then give the processor 1250, and the order sent of reception processing device 1250 and can be performed.Furthermore, it is possible to
Contact panel 1231 is realized using polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except contact panel
1231, input block 1230 can also include other input equipments 1232, and other input equipments 1232 can include but is not limited to
One kind or many in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc.
Kind.
Wherein, display unit 1240 can be used for information and the movement for showing the information inputted by user or being supplied to user
The various menu interfaces of terminal 1200.Display unit 1240 may include display panel 1241, optionally, using LCD or can have
The forms such as machine light emitting diode (Organic Light-Emitting Diode, OLED) configure display panel 1241.
It should be noted that contact panel 1231 can cover display panel 1241, touch display screen is formed, when the touch display screen
Detect after the touch operation on or near it, processor 1250 is sent to determine the type of touch event, with post processing
Device 1250 provides corresponding visual output according to the type of touch event in touch display screen.
Touch display screen includes Application Program Interface viewing area and conventional control viewing area.The Application Program Interface viewing area
And arrangement mode of the conventional control viewing area is not limited, can be arranged above and below, left-right situs etc. can distinguish two and show
Show the arrangement mode in area.The Application Program Interface viewing area is displayed for the interface of application program.Each interface can be with
The interface element such as the icon comprising at least one application program and/or widget desktop controls.The Application Program Interface viewing area
It can also be the empty interface not comprising any content.The conventional control viewing area is used to show the higher control of utilization rate, for example,
Application icons such as settings button, interface numbering, scroll bar, phone directory icon etc..
Wherein processor 1250 is the control centre of mobile terminal 1 200, utilizes various interfaces and connection whole mobile phone
Various pieces, by operation or perform and be stored in software program and/or module in first memory 1221, and call and deposit
The data in second memory 1222 are stored up, the various functions and processing data of mobile terminal 1 200 are performed, so as to mobile whole
End 1200 carries out integral monitoring.Optionally, processor 1250 may include one or more processing units.
In embodiments of the present invention, by call store the first memory 1221 in software program and/or module and/
Or the data in the second memory 1222, processor 1250 is used for：The N frame preview images of camera collection are obtained, and by institute
N frames preview image is stated added to image buffer storage queue；Calculate the target area of every frame preview image in the N frames preview image
Definition values；If receiving photographing instruction, by the definition values highest preview of target area in described image buffer queue
Image is defined as target image, exports the target image；Wherein, N is the integer more than 0.
Alternatively, processor 1250 is additionally operable to：Determine the target area per frame preview image in the N frames preview image.
Alternatively, processor 1250 is additionally operable to：For, per frame preview image, identification is pre- per frame in the N frames preview image
The face characteristic information look in image；Image-region where the face characteristic information is defined as the target area.
Alternatively, processor 1250 is additionally operable to：Detect the touch-control focus operation in shooting preview interface；If detecting touch-control
Focus operation, then obtain the corresponding focusing area of the touch-control focus operation；The focusing area is defined as the target area
Domain.
Alternatively, processor 1250 is additionally operable to：Detect the touch control operation in shooting preview interface；If detecting touch-control behaviour
Make, then obtain per the corresponding image-region of touch control operation described in frame preview image；The image extracted in described image region is special
Levy；Based on described image feature, there are all image-regions of described image feature in the every frame preview image of identification；Will be described every
All image-regions with described image feature are defined as the target area in frame preview image.
Alternatively, processor 1250 is additionally operable to：For every frame preview image, according to the target area of every frame preview image
The gray value of size and each pixel, calculates the definition values of the target area per frame preview image.
Alternatively, processor 1250 is additionally operable to：Size and each pixel of the acquisition per the target area of frame preview image
Gray value；Calculate square of the difference of the gray value of all two adjacent pixels in the target area；To the target area
In domain the difference of the gray value of all two adjacent pixels square carry out summation operation, and summation operation is obtained and value
It is defined as the definition values of the target area of every frame preview image.
Alternatively, processor 1250 is additionally operable to：By all preview images in described image buffer queue according to target area
The definition values in domain are ranked up from high to low；The preview image ranked the first in described image buffer queue after sequence is true
It is set to target image, exports the target image.
Mobile terminal 1 200 can realize each process that mobile terminal is realized in previous embodiment, to avoid repeating, this
In repeat no more.
The mobile terminal 1 200 of the embodiment of the present invention, obtains the N frame preview images of camera collection, and the N frames is pre-
Image of looking at is added to image buffer storage queue；Calculate the definition of the target area in the N frames preview image per frame preview image
Value；It is if receiving photographing instruction, the definition values highest preview image of target area in described image buffer queue is true
It is set to target image, exports the target image；Wherein, N is the integer more than 0.So by by mesh in image buffer storage queue
Region definition values highest preview image is marked as target image, is solved during existing take pictures because shake causes figure
As the problem of fuzzy, target area clearly image is resulted in when shooting.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
In embodiment provided herein, it should be understood that disclosed apparatus and method, others can be passed through
Mode is realized.For example, device embodiment described above is only schematical, for example, the division of the unit, is only
A kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be the INDIRECT COUPLING or communication link of device or unit by some interfaces
Connect, can be electrical, machinery or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize scheme of the embodiment of the present invention according to the actual needs
Purpose.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.
If the function is realized using in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are to cause a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of each of the invention embodiment methods described.
And foregoing storage medium includes：USB flash disk, mobile hard disk, ROM, RAM, magnetic disc or CD etc. are various can be with store program codes
Medium.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (18)
1. a kind of image capturing method, applied to the mobile terminal including camera, it is characterised in that including：
The N frame preview images of camera collection are obtained, and the N frames preview image is added to image buffer storage queue；
Calculate the definition values of the target area in the N frames preview image per frame preview image；
It is if receiving photographing instruction, the definition values highest preview image of target area in described image buffer queue is true
It is set to target image, exports the target image；
Wherein, N is the integer more than 0.
2. according to the method described in claim 1, it is characterised in that described to calculate in the N frames preview image per frame preview graph
Before the step of definition values of the target area of picture, the N frame preview images for obtaining camera collection, and by the N frames
After the step of preview image is added to image buffer storage queue, in addition to：
Determine the target area per frame preview image in the N frames preview image.
3. method according to claim 2, it is characterised in that per frame preview graph in the determination N frames preview image
The step of target area of picture, including：
For, per frame preview image, identification is per the face characteristic information in frame preview image in the N frames preview image；
Image-region where the face characteristic information is defined as the target area.
4. method according to claim 2, it is characterised in that per frame preview graph in the determination N frames preview image
The step of target area of picture, including：
Detect the touch-control focus operation in shooting preview interface；
If detecting touch-control focus operation, the corresponding focusing area of the touch-control focus operation is obtained；
The focusing area is defined as the target area.
5. method according to claim 2, it is characterised in that per frame preview graph in the determination N frames preview image
The step of target area of picture, including：
Detect the touch control operation in shooting preview interface；
If detecting touch control operation, obtain per the corresponding image-region of touch control operation described in frame preview image；
Extract the characteristics of image in described image region；
Based on described image feature, there are all image-regions of described image feature in the every frame preview image of identification；
All image-regions for having described image feature in the preview image per frame are defined as the target area.
6. method according to any one of claim 1 to 5, it is characterised in that in the calculating N frames preview image
The step of definition values of the target area of every frame preview image, including：
For every frame preview image, according to the size of the target area of every frame preview image and the gray value of each pixel, calculate
Per the definition values of the target area of frame preview image.
7. method according to claim 6, it is characterised in that described for every frame preview image, according to every frame preview graph
The gray value of the size of the target area of picture and each pixel, calculates the step of the definition values of the target area of every frame preview image
Suddenly, including：
Obtain the size and the gray value of each pixel of the target area of every frame preview image；
Calculate square of the difference of the gray value of all two adjacent pixels in the target area；
To square progress summation operation of the difference of the gray value of all two adjacent pixels in the target area, and it will ask
Obtained with computing and value is defined as the definition values of the target area of every frame preview image.
8. method according to any one of claim 1 to 5, it is characterised in that in the buffer queue by described image
The definition values highest preview image of target area is defined as target image, the step of exporting the target image, including：
All preview images in described image buffer queue are ranked up from high to low according to the definition values of target area；
The preview image ranked the first in described image buffer queue after sequence is defined as target image, the target is exported
Image.
9. a kind of mobile terminal, including camera, it is characterised in that the mobile terminal also includes：
Acquisition module, for obtaining the N frame preview images of camera collection, and the N frames preview image is delayed added to image
Deposit queue；
Computing module, the definition values for calculating the target area in the N frames preview image per frame preview image；
Output module, if for receiving photographing instruction, by the definition values of target area in described image buffer queue most
High preview image is defined as target image, exports the target image；
Wherein, N is the integer more than 0.
10. mobile terminal according to claim 9, it is characterised in that the mobile terminal also includes：
Determining module, for determining the target area in the N frames preview image per frame preview image.
11. mobile terminal according to claim 10, it is characterised in that the determining module includes：
First identification submodule, for for, per frame preview image, identification is per in frame preview image in the N frames preview image
Face characteristic information；
First determination sub-module, for image-region where the face characteristic information to be defined as into the target area.
12. mobile terminal according to claim 10, it is characterised in that the determining module includes：
First detection sub-module, for detecting the touch-control focus operation in shooting preview interface；
First acquisition submodule, if for detecting touch-control focus operation, obtaining the corresponding focusing of the touch-control focus operation
Region；
Second determination sub-module, for the focusing area to be defined as into the target area.
13. mobile terminal according to claim 10, it is characterised in that the determining module includes：
Second detection sub-module, for detecting the touch control operation in shooting preview interface；
Second acquisition submodule, if for detecting touch control operation, obtaining per touch control operation correspondence described in frame preview image
Image-region；
Extracting sub-module, for extracting the characteristics of image in described image region；
Second identification submodule, for based on described image feature, to there is described image feature in the every frame preview image of identification
All image-regions；
3rd determination sub-module, for all image-regions for having described image feature in the preview image per frame to be determined
For the target area.
14. the mobile terminal according to any one of claim 9 to 13, it is characterised in that the computing module is used for pair
In every frame preview image, according to the size of the target area of every frame preview image and the gray value of each pixel, calculate pre- per frame
Look at image target area definition values.
15. mobile terminal according to claim 14, it is characterised in that the computing module includes：
3rd acquisition submodule, size and the gray value of each pixel for the target area that obtains every frame preview image；
Calculating sub module, square for calculating the difference of the gray value of all two adjacent pixels in the target area；
4th determination sub-module, for square to the difference of the gray value of all two adjacent pixels in the target area
Carry out summation operation, and the definition values for the target area for being defined as every frame preview image with value that summation operation is obtained.
16. the mobile terminal according to any one of claim 9 to 13, it is characterised in that the output module includes：
Sorting sub-module, for by all preview images in described image buffer queue according to target area definition values by
It is high to Low to be ranked up；
Output sub-module, for the preview image ranked the first in the described image buffer queue after sequence to be defined as into target figure
Picture, exports the target image.
17. be in a kind of mobile terminal, its feature, including processor, memory and it is stored on the memory and can be
The computer program run on the processor, the computer program is realized such as claim 1 during the computing device
The step of to image capturing method any one of 8.
18. a kind of computer-readable recording medium, it is characterised in that be stored with computer on the computer-readable recording medium
Program, realizes the image capturing method as any one of claim 1 to 8 when the computer program is executed by processor
The step of.
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