CN105072348B - A kind of method, apparatus and terminal of rapid focus face - Google Patents
A kind of method, apparatus and terminal of rapid focus face Download PDFInfo
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- CN105072348B CN105072348B CN201510534285.1A CN201510534285A CN105072348B CN 105072348 B CN105072348 B CN 105072348B CN 201510534285 A CN201510534285 A CN 201510534285A CN 105072348 B CN105072348 B CN 105072348B
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Abstract
The invention discloses a kind of method of rapid focus face, including：Obtain main camera focusing position；According to the focusing position, the adjacent focusing position of predetermined number is calculated according to pre-defined rule, and the adjacent focusing position is sent to auxiliary camera so that the picture of auxiliary camera shooting predetermined number；The picture that the main camera is shot according to the focusing position is obtained, and the picture is handled, obtains face focusing position；Detect the adjacent focusing position and whether there is face focusing position；If so, then focus successfully；If it is not, the face focusing position is then sent to the main camera so that the main camera adjusts focal length according to the face focusing position, obtains picture, and then repeats the above process, until focusing successfully；This method being capable of rapid focus face；The invention also discloses a kind of device and terminal of rapid focus face.
Description
Technical field
The present invention relates to image processing field, the more particularly to a kind of method, apparatus and terminal of rapid focus face.
Background technology
In intelligent terminal during taking pictures, very big ratio account for taking pictures for face, although face at this stage
Recognizer obtains good performance lifting, and during static, identification face is very accurate, in movement, also can
Face very in the identification photo of maximum probability.But since recognition of face is realized by very big a set of algorithm, it is necessary to first
Gathered data, analyzes data, then judges face location again, by judging, adjusts focal length, finally takes pictures.This process consumes
Take very more time, do not feel as inconvenience in static pose for photograph, but the people in capturing or wanting to shoot clear movement
Under these scenes of face, effect is very undesirable.
What existing technology was only to try to strives for accelerating arithmetic speed, improves the accuracy of algorithm computing, but for fortune
The rapid focus of face, the effect still not reached in dynamic.Therefore, how rapid focus face, be those skilled in the art
The technical issues that need to address.
The content of the invention
The object of the present invention is to provide a kind of method of rapid focus face, this method can be realized to the face in movement
Carry out rapid focus.It is a further object of the present invention to provide a kind of device and terminal of rapid focus face.
In order to solve the above technical problems, the present invention provides a kind of method of rapid focus face, including：
S1, obtain main camera focusing position；
S2, according to the focusing position, be calculated the adjacent focusing position of predetermined number according to pre-defined rule, and by institute
State adjacent focusing position and be sent to auxiliary camera so that the picture of auxiliary camera shooting predetermined number；
S3, obtain the picture that the main camera is shot according to the focusing position, and the picture is handled, and obtains
To face focusing position；
S4, the detection adjacent focusing position whether there is face focusing position；
If so, then focus successfully；
If it is not, then performing S5 sends the face focusing position to the main camera so that the main camera according to
The face focusing position adjusts focal length, obtains picture, and enters S1, until focusing successfully.
Wherein, the method for the rapid focus face further includes：
Shooting picture is mapped with focusing position.
Wherein, after focusing successfully, according to the successful photo of mapping relations extraction focusing.
Wherein, the method for the rapid focus face further includes：
The focusing position for successful photo of focusing is obtained according to mapping relations；
Face focal position in the successful photo of detection focusing；
Judge whether focusing position and the face focal position are consistent, when inconsistent, prompted.
Wherein, the method for the rapid focus face further includes：
The successful number of setting focusing；
Monitor whether successful number of focusing meets to set number, if so, then stopping focusing, if it is not, then continuing repetition pair
Burnt process.
The present invention provides a kind of device of rapid focus face, including：
First acquisition unit, for obtaining main camera focusing position；
Computing unit, for according to the focusing position, the adjacent focusing of predetermined number to be calculated according to pre-defined rule
Position, and the adjacent focusing position is sent to auxiliary camera so that the picture of auxiliary camera shooting predetermined number；
Second acquisition unit, the picture shot for obtaining the main camera according to the focusing position, and to described
Picture is handled, and obtains face focusing position；
Detection unit, whether there is face focusing position for detecting the adjacent focusing position；If so, then focusing into
Work(；If it is not, the face focusing position is then sent to the main camera so that the main camera is focused according to the face
Position adjustment focal length, obtains picture, and sends instructions to first acquisition unit and be used to obtain main camera focusing position again, directly
To focusing successfully.
Wherein, the device of the rapid focus face further includes：
Map unit, for shooting picture to be mapped with focusing position.
Wherein, the device of the rapid focus face further includes：
Prompt unit, for obtaining the focusing position for successful photo of focusing according to mapping relations；Detection focusing is successful
Face focal position in photo；Judge whether focusing position and the face focal position are consistent, when inconsistent, carried
Show.
Wherein, the device of the rapid focus face further includes：
Setup unit, for setting successful number of focusing；
Monitoring unit, for monitoring whether successful number of focusing meets to set number, if so, then stop focusing, if it is not,
Then continue to repeat focus process.
The present invention, which provides a kind of terminal, includes main camera, auxiliary camera and device described above.
The method of rapid focus face provided by the present invention, including：S1, obtain main camera focusing position；S2, basis
The focusing position, is calculated the adjacent focusing position of predetermined number according to pre-defined rule, and by the adjacent focusing position
It is sent to auxiliary camera so that the picture of auxiliary camera shooting predetermined number；S3, obtain the main camera according to the focusing
The picture of position shooting, and the picture is handled, obtain face focusing position；S4, the detection adjacent focusing position
With the presence or absence of face focusing position；If so, then focus successfully；If it is not, the face focusing position is then sent to the main shooting
Head so that the main camera adjusts focal length according to the face focusing position, obtains picture, and enters S1, until focus into
Work(.
This method obtains picture by main camera, and provides the adjacent focusing position of predetermined number to auxiliary camera, because
For the adjacent focusing position of predetermined number, it is likely that can there are the position that face is moved to；Therefore, lost in main camera focusing
When losing, it is very likely that there is successful face picture of focusing for the picture of auxiliary camera shooting predetermined number.Therefore, break
Preceding camera " wait camera output picture->Wait algorithm process->Wait focusing completion->Wait camera output figure
The speed ability bottlenecks to be recycled such as piece " is this, realize the rapid focus of dynamic human face.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
The flow chart of the method for the rapid focus face that Fig. 1 is provided by the embodiment of the present invention；
The structure diagram of the manufacture for the rapid focus face that Fig. 2 is provided by the embodiment of the present invention.
Embodiment
The core of the present invention is to provide a kind of method of rapid focus face, and this method can be realized to the face in movement
Carry out rapid focus.Another core of the present invention is to provide a kind of device and terminal of rapid focus face.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the prior art, the degree of processor speed and algorithm optimization is confined to, people can not be met for movement
The demand that middle face is quickly caught.And the collecting flowchart of image determines that the whole identification process time can not possibly obtain too big subtract
Few, identification process is to need to wait camera outgoi8ng data all the time, after related algorithm is handled, then feeds back focal position, so
Control focusing motor is focused afterwards, this is a kind of process of single line, and performance can not obtain very big breakthrough.Therefore, also without
Method meets the needs of subsequent user handles photograph in real time, and there are bottleneck all the time for performance.Method provided by the invention can solve
The above problem.
Please refer to Fig.1, the flow chart of the method for the rapid focus face that Fig. 1 is provided by the embodiment of the present invention；This method
It can include：
S1, obtain main camera focusing position；
Wherein, according to existing technical solution, main camera can be with auto-focusing, and obtains to defocused picture, here
Need to obtain the focusing position of main camera.
S2, according to the focusing position, be calculated the adjacent focusing position of predetermined number according to pre-defined rule, and by institute
State adjacent focusing position and be sent to auxiliary camera so that the picture of auxiliary camera shooting predetermined number；
Wherein, it can be in the predetermined of focusing position the adjacent focusing position of predetermined number to be calculated according to pre-defined rule
The all directions of distance to position be all adjacent focusing position, then auxiliary camera, which obtains, shoots eight after this eight adjacent focusing positions
Picture；It is all adjacent focusing position in the position in 12 directions of the preset distance of focusing position that can also be, then auxiliary shooting
Head shoots 12 pictures after obtaining this 12 adjacent focusing positions.Can also be distributed selection, such as in focusing position
The all directions for the preset distance put to position be all adjacent focusing position, and each focusing position is again in eight adjacent focusing positions
There can be the focusing position of predetermined number.The adjacent focusing position of predetermined number can be calculated according to pre-defined rule here in a word
Put, and the adjacent focusing position is sent to auxiliary camera so that the picture of auxiliary camera shooting predetermined number.Wherein, in advance
The numerical value of set a distance can also be determined according to actual conditions.
S3, obtain the picture that the main camera is shot according to the focusing position, and the picture is handled, and obtains
To face focusing position；
Wherein, not having precedence relationship between step S2 and S3, S2 and S3 may be performed simultaneously, and can also first carry out S2,
After perform S3, S3 can also be first carried out, perform S2 afterwards.
Wherein, the picture main camera shot according to the focusing position, carries out the processing of face recognition algorithms, obtains
Burnt position, that is, focus point of face.
S4, the detection adjacent focusing position whether there is face focusing position；
If so, then focus successfully；
If it is not, then performing S5 sends the face focusing position to the main camera so that the main camera according to
The face focusing position adjusts focal length, obtains picture, and enters S1, until focusing successfully.
Wherein, the transmission face focusing position in S5 is to the main camera so that the main camera is according to institute
Face focusing position adjustment focal length is stated, this step of acquisition picture can also directly be carried out after S3 obtains face focusing position
's.
Wherein, due to auxiliary camera previously according to prediction focal length shot, it is likely that in move face movement
The accurate picture to position；Therefore, the picture of the face in movement can be quickly obtained by such cyclic process.
Wherein, it is preferred that the number of auxiliary camera is 1, and main camera number is 1；Cost can so be saved.Place
It is also fine to manage effect.
The detailed process handled in above-described embodiment can be：
In dual camera, the process for obtaining face can be by the way of dual camera linkage.Dual camera is divided into master
Camera and auxiliary camera, after main camera obtains focusing picture first, during transferring to later stage algorithm process, auxiliary shooting
Head obtains a certain number of pictures in the adjacent burnt section of the focus point of main camera successively, when face recognition algorithms completion, obtains
After focal length, notify main camera that focal length is transferred to designated position, obtain picture, it is at the same time, focal length value is auxiliary with early period
The focal length of camera shooting photo compares, if auxiliary camera had obtained the picture of corresponding focal length at this time, hands over immediately
Handled by face recognition algorithms.Circulate according to this, pass through the picture that continuously acquires of auxiliary camera, and the focus point of main camera, energy
Enough very fast positions for detecting face and focal length, and obtain timely even advanced picture.Greatly improve face
The real-time of recognition and tracking.
Based on above-mentioned technical proposal, the method for rapid focus face provided in an embodiment of the present invention, this method is taken the photograph by master
As head auto-focusing, the image after focusing position is obtained, auxiliary camera, which starts simultaneously at, obtains the adjacent focusing position of main picture camera
Plurality of pictures.Meanwhile the image for getting main camera, transfer to face recognition algorithms to handle, obtain the focus point of face
Value.Main camera readjusts focusing position and obtains picture according to focusing point value.Meanwhile above auxiliary camera obtains for algorithm detection
The picture taken, if there is matching focus point to be worth picture, if so, the picture for changing focusing point value is then chosen, by correlated judgment
Afterwards, the face picture that obtains correctly focusing circulates according to this, then continuously can quickly obtain focusing correctly movement face picture；Should
Method obtains picture by main camera, and provides the adjacent focusing position of predetermined number to auxiliary camera, because, predetermined number
Adjacent focusing position, it is likely that can there are the position that face is moved to；Therefore, it is auxiliary when main camera focusing fails
It is very likely that there is successful face picture of focusing for the picture of camera shooting predetermined number.Therefore, the preceding camera broken
" wait camera output picture->Wait algorithm process->Wait focusing completion->This wait of wait camera output picture "
The speed ability bottleneck of circulation, realizes the rapid focus of dynamic human face.
Preferably, the method based on above-mentioned rapid focus face, it can also include：
Shooting picture is mapped with focusing position.
Wherein, focusing position is corresponded with the picture shot under the focusing position, so facilitates the later stage to be shone
Piece such as checks at the operation.
Preferably, in the above-described embodiments after focusing successfully, according to the successful photo of mapping relations extraction focusing.
Wherein, it is first determined successful focusing position value of focusing, according to the focusing position value and mapping relations, can look for
To successful photo of focusing.
Preferably, can also be included based on above-mentioned technical proposal, this method：
The focusing position for successful photo of focusing is obtained according to mapping relations；
Face focal position in the successful photo of detection focusing；
Judge whether focusing position and the face focal position are consistent, when inconsistent, prompted.
Wherein, after the successful photo of focusing that will be obtained by mapping, to prevent mapping relations from entanglement occur, for the picture
Focusing position be detected, it is and whether the face focal position detected and the focusing position that judges is consistent, when consistent,
Then represent that extraction is correct；When inconsistent, then it represents that extraction mistake.It can so ensure that the photo that user obtains shines to be correct
Piece, and in error, user can be reminded in time, carry out the maintenance of mapping relations.
Preferably, the method based on the rapid focus face described in any of the above-described a technical solution can also include：
The successful number of setting focusing；
Monitor whether successful number of focusing meets to set number, if so, then stopping focusing, if it is not, then continuing repetition pair
Burnt process.
Since present user usually needs continuous shooting, and during current user's continuous shooting, can obtain can focusing it is accurate
True picture is simultaneously few, and the present invention obtains successful photo of focusing using the above method, and speed is fast and accuracy rate is high；Therefore, may be used
To need successful number of focusing by setting, the function similar to continuous shooting is carried out, the several accurate photos of focusing can be obtained,
Meet the needs of client, improve the usage experience of client.
Based on above-mentioned technical proposal, the method for rapid focus face provided in an embodiment of the present invention, this method is taken the photograph by master
As head obtains picture, and the adjacent focusing position of predetermined number is provided to auxiliary camera, because, the adjacent focusing position of predetermined number
Put, it is likely that can there are the position that face is moved to；Therefore, when main camera focusing fails, auxiliary camera shooting is pre-
Determining the picture of number, it is very likely that there is successful face picture of focusing.Therefore, the preceding camera broken " waits camera defeated
Go out picture->Wait algorithm process->Wait focusing completion->Wait camera output picture " speed ability to be recycled such as this
Bottleneck, realizes the rapid focus of dynamic human face.I.e. by the physics advantage of dual camera, the need focused with reference to actual motion face
Ask, devise a kind of mode of two-way measuring face focusing, can be good at solving current face focusing speed short slab and
Accuracy, can be very good lifting user experience.
An embodiment of the present invention provides the method for rapid focus face, be able to can be realized in movement by the above method
Face rapid focus.
The device of rapid focus face provided in an embodiment of the present invention is introduced below, rapid focus described below
The device of face can correspond reference with the method for above-described rapid focus face.
Please refer to Fig.2, the structure diagram of the manufacture for the rapid focus face that Fig. 2 is provided by the embodiment of the present invention；The dress
Putting to include：
First acquisition unit 100, for obtaining main camera focusing position；
Computing unit 200, for the phase adjacency pair of predetermined number according to the focusing position, to be calculated according to pre-defined rule
Burnt position, and the adjacent focusing position is sent to auxiliary camera so that the picture of auxiliary camera shooting predetermined number；
Second acquisition unit 300, the picture shot for obtaining the main camera according to the focusing position, and to institute
State picture to be handled, obtain face focusing position；
Detection unit 400, whether there is face focusing position for detecting the adjacent focusing position；If so, then focus
Success；If it is not, the face focusing position is then sent to the main camera so that the main camera is according to the face pair
Burnt position adjustment focal length, obtains picture, and sends instructions to first acquisition unit and be used to obtain main camera focusing position again,
Until focusing successfully.
Preferably, the device can also include in another embodiment：
Map unit, for shooting picture to be mapped with focusing position.
Preferably, the device can also include in another embodiment：
Prompt unit, for obtaining the focusing position for successful photo of focusing according to mapping relations；Detection focusing is successful
Face focal position in photo；Judge whether focusing position and the face focal position are consistent, when inconsistent, carried
Show.
Preferably, the device can also include in another embodiment：
Setup unit, for setting successful number of focusing；
Monitoring unit, for monitoring whether successful number of focusing meets to set number, if so, then stop focusing, if it is not,
Then continue to repeat focus process.
Wherein, the unit in each embodiment can be present in a device in any combination.
The present invention also provides a kind of terminal, including main camera, the dress described in auxiliary camera and above-mentioned various embodiments
Put.
Wherein, the terminal can be mobile phone.
Each embodiment is described by the way of progressive in specification, and what each embodiment stressed is and other realities
Apply the difference of example, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
Speech, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related part is referring to method part illustration
.
Professional further appreciates that, with reference to each exemplary unit of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, generally describes each exemplary composition and step according to function in the above description.These
Function is performed with hardware or software mode actually, application-specific and design constraint depending on technical solution.Specialty
Technical staff can realize described function to each specific application using distinct methods, but this realization should not
Think beyond the scope of this invention.
Can directly it be held with reference to the step of method or algorithm that the embodiments described herein describes with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The method, apparatus and terminal of rapid focus face provided by the present invention are described in detail above.Herein
In apply specific case the principle of the present invention and embodiment be set forth, the explanation of above example is only intended to side
Assistant solves the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, not
On the premise of departing from the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification is also fallen into
In the protection domain of the claims in the present invention.
Claims (10)
- A kind of 1. method of rapid focus face, it is characterised in that including：S1, obtain main camera focusing position；S2, according to the focusing position, be calculated the adjacent focusing position of predetermined number according to pre-defined rule, and by the phase Adjacent focusing position is sent to auxiliary camera so that the picture of auxiliary camera shooting predetermined number；S3, obtain the picture that the main camera is shot according to the focusing position, and the picture is handled, and obtains people Face focusing position；S4, the detection adjacent focusing position whether there is face focusing position；If so, then focus successfully；If it is not, then performing S5 sends the face focusing position to the main camera so that the main camera is according to Face focusing position adjusts focal length, obtains picture, and enters S1, until focusing successfully.
- 2. the method for rapid focus face as claimed in claim 1, it is characterised in that further include：Shooting picture is mapped with focusing position.
- 3. the method for rapid focus face as claimed in claim 2, it is characterised in that after focusing successfully, reflected according to described Penetrate the successful photo of relation extraction focusing.
- 4. the method for rapid focus face as claimed in claim 3, it is characterised in that further include：The focusing position for successful photo of focusing is obtained according to mapping relations；Face focal position in the successful photo of detection focusing；Judge whether focusing position and the face focal position are consistent, when inconsistent, prompted.
- 5. such as the method for Claims 1-4 any one of them rapid focus face, it is characterised in that further include：The successful number of setting focusing；Whether the successful number of monitoring focusing meets to set number, if so, then stopping focusing, if it is not, then continuing to repeat to focus Journey.
- A kind of 6. device of rapid focus face, it is characterised in that including：First acquisition unit, for obtaining main camera focusing position；Computing unit, for the adjacent focusing position of predetermined number according to the focusing position, to be calculated according to pre-defined rule, And the adjacent focusing position is sent to auxiliary camera so that the picture of auxiliary camera shooting predetermined number；Second acquisition unit, the picture shot for obtaining the main camera according to the focusing position, and to the picture Handled, obtain face focusing position；Detection unit, whether there is face focusing position for detecting the adjacent focusing position；If so, then focus successfully；If It is no, then the face focusing position is sent to the main camera so that the main camera is according to the face focusing position Focal length is adjusted, obtains picture, and sends instructions to first acquisition unit and is used to obtain main camera focusing position again, until right Jiao's success.
- 7. the device of rapid focus face as claimed in claim 6, it is characterised in that further include：Map unit, for shooting picture to be mapped with focusing position.
- 8. the device of rapid focus face as claimed in claim 7, it is characterised in that further include：Prompt unit, for obtaining the focusing position for successful photo of focusing according to mapping relations；The successful photo of detection focusing In face focal position；Judge whether focusing position and the face focal position are consistent, when inconsistent, prompted.
- 9. such as the device of claim 6 to 8 any one of them rapid focus face, it is characterised in that further include：Setup unit, for setting successful number of focusing；Monitoring unit, for monitoring whether the successful number of focusing meets to set number, if so, then stop focusing, if it is not, then after It is continuous to repeat focus process.
- A kind of 10. terminal, it is characterised in that including main camera, auxiliary camera and claim 6 to 9 any one of them dress Put.
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| CN105827970B (en) * | 2016-03-31 | 2019-03-05 | 维沃移动通信有限公司 | A kind of image processing method and mobile terminal |
| CN106412422B (en) * | 2016-09-05 | 2019-07-19 | Oppo广东移动通信有限公司 | Focusing method, device and terminal |
| CN107872613A (en) * | 2016-09-23 | 2018-04-03 | 中兴通讯股份有限公司 | A kind of method, device and mobile terminal that recognition of face is carried out using dual camera |
| CN107509060A (en) * | 2017-09-22 | 2017-12-22 | 安徽辉墨教学仪器有限公司 | A kind of voice acquisition system of adaptive teacher position |
| CN108965634B (en) * | 2018-07-24 | 2020-06-30 | 北京京东尚科信息技术有限公司 | Offline cross-device image printing method and system and shooting device |
| CN109670451A (en) * | 2018-12-20 | 2019-04-23 | 天津天地伟业信息系统集成有限公司 | Automatic face recognition tracking |
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| CN104460184A (en) * | 2014-11-17 | 2015-03-25 | 天津三星通信技术研究有限公司 | Method and facility for focusing in shooting device |
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| CN104601883A (en) * | 2014-12-30 | 2015-05-06 | 广东欧珀移动通信有限公司 | Image shooting method and device |
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| JP2007110498A (en) * | 2005-10-14 | 2007-04-26 | Fujifilm Corp | Compound eye photographing apparatus |
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| CN104460184A (en) * | 2014-11-17 | 2015-03-25 | 天津三星通信技术研究有限公司 | Method and facility for focusing in shooting device |
| CN104469153A (en) * | 2014-12-02 | 2015-03-25 | 广东威创视讯科技股份有限公司 | Quick focusing method and system |
| CN104601883A (en) * | 2014-12-30 | 2015-05-06 | 广东欧珀移动通信有限公司 | Image shooting method and device |
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