CN107800967A - A kind of image pickup method and mobile terminal - Google Patents
A kind of image pickup method and mobile terminal Download PDFInfo
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- CN107800967A CN107800967A CN201711051862.7A CN201711051862A CN107800967A CN 107800967 A CN107800967 A CN 107800967A CN 201711051862 A CN201711051862 A CN 201711051862A CN 107800967 A CN107800967 A CN 107800967A
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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
- H04N23/60—Control of cameras or camera modules
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/22—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
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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
- H04N23/60—Control of cameras or camera modules
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
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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
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/142—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
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- Studio Devices (AREA)
Abstract
The present invention provides a kind of image pickup method and mobile terminal.This method includes：During camera collection image, the speech data of at least three microphones collection is obtained；According to the speech data, the sound bearing and sound source distance of the speech data are determined；According to the sound bearing and sound source distance, the acquisition parameters of camera are adjusted；Wherein, the sound bearing is orientation of the sound source relative to the camera；The sound source distance is the distance between sound source and the camera.The invention enables mobile terminal when carrying out video capture to special scenes (such as video conference), pass through the sound bearing and sound source distance determined, can fast positioning to sound source position, and it is shot, and shooting step is simple, video entirety shooting effect and Consumer's Experience are lifted, while also improves video capture efficiency.
Description
Technical field
The present embodiments relate to communication technical field, more particularly to a kind of image pickup method and mobile terminal.
Background technology
With the fast development of intelligent mobile terminal intelligent mobile terminal (such as hand is used with popularization, increasing user
Machine) carry out video shooting.
User can fix mobile phone to carry out video capture by hand-held mobile phone or by hand-held stabilizing equipment at this stage, and
And generally require user and manual focus operation is carried out to captured scene content；If user does not enter to captured scene content
Row operation, then it will be always maintained at focusing to preview central area, focusing mode is more single.For regarding for some special scenes
Frequency is shot, such as TV news, and the photographed scene for having personnel to make a speech in meeting, carries out user's very first time of video capture simultaneously
Do not know the position of spokesman, the position that can not rapidly navigate to the shooting visual field of mobile terminal where spokesman, and repeatedly
The position looked for where spokesman so that shooting complex steps, and easily influence the overall shooting effect of video and shooting efficiency.
The content of the invention
The embodiment of the present invention provides a kind of image pickup method and mobile terminal, is being carried out with solving mobile terminal in the prior art
During the video capture of special scenes, video capture effect difference and efficiency it is low the problem of.
In order to solve the above-mentioned technical problem, the present invention is realized in：A kind of image pickup method, applied to mobile terminal,
The mobile terminal includes at least three microphones, including：
During camera collection image, the speech data of at least three microphones collection is obtained；
According to the speech data, the sound bearing and sound source distance of the speech data are determined；
According to the sound bearing and sound source distance, the acquisition parameters of camera are adjusted；
Wherein, the sound bearing is orientation of the sound source relative to the camera；The sound source distance is sound source and institute
State the distance between camera.
In a first aspect, the embodiment of the present invention additionally provides a kind of mobile terminal, the mobile terminal includes at least three wheats
Gram wind, including：
Acquisition module, for during camera collection image, obtaining the language of at least three microphones collection
Sound data；
Sound source determining module, for according to the speech data, determine the speech data sound bearing and sound source away from
From；
Adjusting module is shot, for according to the sound bearing and the sound source distance, the shooting for adjusting camera to be joined
Number；
Wherein, the sound bearing is orientation of the sound source relative to the camera；The sound source distance is sound source and institute
State the distance between camera.
Second aspect, the embodiments of the invention provide a kind of mobile terminal, including：Processor, memory and it is stored in institute
The computer program that can be run on memory and on the processor is stated, when the computer program is by the computing device
The step of realizing image pickup method as described above.
The third aspect, the embodiments of the invention provide a kind of computer-readable recording medium, the computer-readable storage
Computer program is stored on medium, the computer program realizes the step of image pickup method as described above when being executed by processor
Suddenly.
In embodiments of the present invention, during the camera collection image of mobile terminal, by obtaining mobile terminal
On microphone collection speech data, and according to the speech data, determine sound bearing and sound source distance, and then pass through sound source
Orientation and sound source distance, adjust the acquisition parameters of camera.So so that mobile terminal is to special scenes (such as video conference)
When carrying out video capture, by the sound bearing and sound source distance determined, can fast positioning enter to sound source position, and to it
Row shooting, and shooting step is simple, lifts video entirety shooting effect and Consumer's Experience, while also improve video capture efficiency.
Brief description of the drawings
Fig. 1 is the flow chart for the image pickup method that one embodiment of the invention provides；
Fig. 2 be the embodiment of the present invention mobile terminal each microphone between and the position between each microphone and sound source
Relation schematic diagram；
Fig. 3 is the particular flow sheet of step 103 in Fig. 1；
Fig. 4 is the mobile terminal structure schematic diagram that one embodiment of the invention provides；
Fig. 5 is the mobile terminal structure schematic diagram that another embodiment of the present invention provides；
Fig. 6 is the mobile terminal structure schematic diagram of the offer of further embodiment of this 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 describes, it is clear that described embodiment is part of the embodiment of the present 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.
Fig. 1 is the flow chart of the image pickup method of one embodiment of the invention, and applied to mobile terminal, the mobile terminal is included extremely
Few three microphones.Below should figure illustrate the implementation process of this method.
Step 101, during camera collection image, the voice number of at least three microphones collection is obtained
According to.
It should be noted that mobile terminal of the embodiment of the present invention includes at least three microphones.Preferably, of microphone
Number is 3.
Wherein, the first microphone is arranged at mobile terminal upper end, for microphone denoising；Second microphone is arranged at shifting
Dynamic lower end portion, is inputted for sound.Further, at least three microphone except above-mentioned first microphone and second microphone it
At least one the 3rd microphone is arranged at the back side of mobile terminal in other outer microphones, and exists with the distance between camera
In preset range.Here, it is preferred that, the distance between the 3rd microphone and camera are 0.
Specifically, when voice be present in photographed scene and send, at least three microphones gather speech data simultaneously, are used for
Subsequently to the dissection process of speech data.
For example, photographed scene one：There is participant's speech in session and under platform
When in session, a user is shot to record conference content using mobile terminal in meeting-place front end, if having under platform
Participant makes a speech, and acquisition for mobile terminal is arranged at the speech data of the microphone collection on mobile terminal.
Photographed scene two：More people's discussion
When it is more personal discuss official business together when, can in a correct position, (position can photograph all by by mobile terminal frame
Participant), first, after starting shooting, mobile terminal will monitor the sound of each participant by microphone, if having
Participant makes a speech, the speech data of the participant of acquisition for mobile terminal microphone collection.
Step 102, according to the speech data, the sound bearing and sound source distance of the speech data are determined.
Wherein, the sound bearing is orientation of the sound source relative to the camera；The sound source distance is sound source and institute
State the distance between camera.
Here, by default speech recognition technology, dissection process is carried out to speech data, determines the sound source of speech data
Orientation and sound source distance.In this way, providing data support for the adjustment of follow-up camera, it is easy to camera alignment sound source position to clap
Take the photograph.
Step 103, according to the sound bearing and the sound source distance, the acquisition parameters of camera are adjusted.
Specifically, according to sound bearing and sound source distance, by adjusting the acquisition parameters of camera, can realize to sound source
The shooting of position, sound source position is set to be located among shooting picture.So, can not only fast positioning to sound source position, also
Shooting step is simplified, avoids user from operating mobile terminal repeatedly, also improves video entirety shooting effect and Consumer's Experience.
Here, sound bearing refers to sound source relative to being arranged at the mobile terminal back side and the Mike nearest apart from camera
The orientation of wind；
Sound source distance, refer to sound source relative to being arranged at the mobile terminal back side and the microphone nearest apart from camera
Distance.
Image pickup method provided in an embodiment of the present invention, during the camera collection image of mobile terminal, by obtaining
The speech data for taking the microphone on mobile terminal to gather, and according to the speech data, determine sound bearing and sound source distance, enter
And by sound bearing and sound source distance, adjust the acquisition parameters of camera.So so that mobile terminal is to special scenes
When (such as video conference) carries out video capture, by the sound bearing and sound source distance determined, can fast positioning to sound source
Position, and it is shot, and shooting step is simple, lifts video entirety shooting effect and Consumer's Experience, while
Improve video capture efficiency.
On the basis of the embodiment shown in above-mentioned Fig. 1, further, the speech data includes：Each Mike's elegance
The voice signal voltage of speech data in the photographed scene of collection；Preferably, step 102 may include：
According to the voice signal voltage, the sound bearing of the speech data is calculated.
Here, this step may particularly include：
According to the voice signal voltage and formulaAnd formula
The voice signal total voltage of the speech data of at least three microphones collection is calculated；Wherein, UaDescribed in representing at least
The voice signal total voltage of the speech data of three microphone collections, RmRepresent the speech data of m-th of microphone collection
Voice signal voltage, m represent m-th of microphone, and d represents the spacing between microphone, and λ is wave length of sound, and n is the number of microphone
Amount.
It should be noted that above-mentioned two formula is beamforming algorithm formula.Here, w is angular speed, and t is the time, wt tables
Show angle.Here, wt can be by being calculated, for example, m=0, Ua=R0cos(wt)；Here coswt=Ua/R0。
Then, the voice signal total voltage and formula of the speech data gathered according at least three microphoneThe Energy distribution that at least three microphone receives voice signal is calculated, and by Energy distribution most
Big orientation is defined as sound bearing.
By the calculating process of two above step, orientation of the sound source relative to camera is finally determined.
On the basis of the embodiment shown in above-mentioned Fig. 1, further, at least three microphone includes：First wheat
Gram wind, second microphone and the 3rd microphone；The speech data includes：Received between first microphone and the 3rd microphone
The second time difference of voice signal is received between the very first time difference and second microphone and the 3rd microphone of voice signal,
3rd microphone is the microphone with the distance of the camera within a preset range at least three microphone；It is excellent
Choosing, step 102 also includes：
Obtain between first microphone and the second microphone first distance, the second microphone with it is described
The 3rd distance between second distance and first microphone and the 3rd microphone between 3rd microphone；
It should be noted that the distance between each microphone is pre-stored within mobile terminal.
It need to further illustrate, the 3rd microphone is arranged at the back side of mobile terminal, and is at least three Mike
In wind in addition to the first microphone and second microphone, the closest microphone with the camera.
Here, T1Represent that the very first time is poor, T2Represented for the second time difference.
Based on the very first time is poor, the second time difference, first distance, the second distance and the described 3rd away from
From the sound source distance of the speech data is calculated.
Specifically, this step may also include：
According to the first formula D1=L-T1VS, the second formula D2=L-T2VSAnd the 3rd formulaInstitute is calculated
State the sound source distance of speech data；
Wherein, D1Represent the distance between sound source and the first microphone；D2Represent between sound source and second microphone away from
From；L represents the distance between sound source and the 3rd microphone；T1Represent that the very first time is poor；T2Represented for the second time difference；VSFor sound
Aerial spread speed；d1Represent the first distance between the first microphone and second microphone；d2Represent second microphone
With the second distance between the 3rd microphone；d3Represent the 3rd distance between the first microphone and the 3rd microphone；p1=(d3+
D1+L)/2；p2=(d2+D2+L)/2；p3=(D1+D2+d1)/2；p4=(d1+d2+d3)/2。
Here, as shown in Fig. 2 position relationship schematic diagram between each microphone and between each microphone and sound source.
With reference to the schematic diagram, the calculating process of distance between sound source and camera in above-mentioned steps is illustrated.
With reference to figure 2, it should be noted that, M represents sound source；K1Represent the first microphone；K2Represent second microphone；K3Represent
3rd microphone；d1Represent the first distance (known quantity) between the first microphone and second microphone；d2Represent second microphone
Second distance (known quantity) between the 3rd microphone；d3Represent the 3rd distance between the first microphone and the 3rd microphone
(known quantity)；D1Represent the distance between sound source and the first microphone (unknown quantity)；D2Represent between sound source and second microphone
Distance (unknown quantity)；L represents the distance between sound source and the 3rd microphone (unknown quantity).
Also need supplement, because the 3rd microphone be the microphone closest with the camera, so, sound source and
The distance between camera can be approximately equal to the distance between sound source and the 3rd microphone.It is, L is sound source and camera
The distance between.
Here, according to formula D1=L-T1VS, formula D2=L-T2VSAnd Heron's formula calculate sound source and camera it
Between distance, wherein, VSFor the aerial spread speed of sound.
Specifically, as shown in Figure 2, M, K1、K2、K3A quadrangle is formed, due to by K1K2And K3M is divided into multiple triangles,
Utilize the area relationship between each triangle, i.e. S △ K1K3M+S△K3K2M=S △ K1K2M+S△K1K2K3；And by Heron's formulaCalculate the area of triangle；Wherein, p be triangle semi-perimeter, p=(a+b
+c)/2；A, b, c are the length of side on Atria bar side.
So area can be represented by Heron's formula between each triangle, it is specific as follows：
Wherein, p1=(d3+D1+L)/2；p2=(d2+D2+L)/2；p3=(D1+D2+d1)/2；p4=(d1+d2+d3)/2。
In this way, formula combination above-mentioned two formula, you can try to achieve L, i.e. the distance between sound source and camera.
Here, continue by taking photographed scene one as an example, there is participant's speech under platform, acquisition for mobile terminal is arranged at movement
After the speech data of microphone collection in terminal, by the identification of speech data, sound bearing and sound source distance are determined.Tool
The determination step of body repeats no more here referring to the elaboration of relevant step 102 part in above-described embodiment.
Here, sound bearing and sound source determination of distance, contribute to mobile terminal fast positioning to sound source position, avoid with
Due to the too fast caused particular location that can not learn spokesman of speaking during meeting personnel's speech, due shooting picture is missed, and
So that the situation generation that video capture is ineffective.
Further, by taking photographed scene two as an example, there are participant's speech, the participant of acquisition for mobile terminal microphone collection
After the speech data of personnel, the speech data is identified, by analyzing and processing, determines sound source (participant) orientation
With sound source distance.The specific elaboration for determining step referring to relevant step 102 part in above-described embodiment, it is no longer superfluous here
State.
On the basis of the embodiment shown in above-mentioned Fig. 1, it is preferred that step 103 may include：
Step 1031, according to the sound bearing, the shooting direction of the camera is adjusted；
Wherein, after the shooting direction for adjusting the camera, the sound source is located at the current shooting of the camera and regarded
The central area of field.
Here, it is preferred that, the sound source is located at the central area of the current shooting visual field of camera.If by calculating, really
Surely the sound source can not be made to be located at the central area of the current shooting visual field of the camera, then sound source is located at the bat of camera
Take the photograph in field range.In this way, by the adjustment of the shooting direction to camera, can fast positioning to sound source position, and make sound source
In the shooting field range of camera, image frame when lifting the overall shooting effect and later stage video playback of video
Effect.
Here, this step may particularly include：
Conversion process is carried out to the sound bearing, obtains the camera lens offset of the camera；
Here, it is necessary to which explanation, camera lens are one of building block of camera, camera also wraps in addition to including camera lens
Include：LED (light emitting diode, Light Emitting Diode) lamp, chipset (be used for convert optical signals to electric signal),
PCB (printed circuit board, Printed Circuit Board) and other component (such as resistance, electric capacity, inductance and triodes
Deng).
Preferably, sound bearing can be converted to by camera lens offset by the gyroscope being arranged in the camera lens of camera.
According to the camera lens offset, the camera is controlled to be moved towards the sound bearing.
Here, specifically, the camera lens offset signal is reached into DSP (Digital Signal Processing, Digital Signal
Processing) microprocessor, the displacement of compensation needed for camera lens is calculated；Afterwards, by compensating lens set, according to sound bearing
And offset, OIS (optical image stabilizer, Optical Image Stabilizer) moving lens is controlled by software, with
The shooting direction of camera is adjusted.
Offset it should be noted that including the maximum camera lens for allowing camera lens to offset in the performance parameter of the camera lens of camera
Amount.
Here, if the camera lens offset determined by sound bearing is less than maximum camera lens offset, the bat of camera is adjusted
Direction is taken the photograph, sound source can be made to be located at the central area of the current shooting visual field of camera；If camera lens offset exceedes maximum camera lens
Offset, the shooting direction of camera is adjusted, then sound source can not be made to be located at the central area of the current shooting visual field of camera, that
Sound source is set to be located in the shooting field range of camera as far as possible.
So,, can if someone makes a speech when mobile terminal is carrying out video capture to special scenes (such as video conference)
Fast positioning eliminates to sound source position and manually adjusts mobile terminal seeking sound source position repeatedly, shooting step obtains
Simplification has been arrived, has improved video capture efficiency, while also lift Consumer's Experience.
Preferably, as shown in figure 3, after step 1031, methods described also includes：
Step 1032, according to the sound source distance, sound source position is focused.
Here, this step may particularly include：
According to formula 1/U+1/V=1/F, image distance of the sound source in the camera lens of the camera is calculated；
Wherein, U represents the sound source distance, and V represents image distance, and F represents focal length
Here, the symbol L in above-described embodiment is identical with the implication expressed by the symbol U in the present embodiment, is used to table
Show the distance between sound source and camera, that is, object distance.
According to the image distance, the camera lens is controlled to be pushed at the imaging surface position of the camera.
Here, after by calculating image distance of the acquisition sound source in the camera lens of camera, camera lens can be promoted according to image distance value, directly
To the opening position being pushed to where the imaging plane of camera, so as to realize the focusing process to sound source position.It so, it is possible to make
Sound source is apparent from optical center, reaches the purpose of further lifting shooting effect.
It should be noted that the process of camera lens passage is also the process that camera realizes focusing.
Here, continue by taking photographed scene one as an example, it is determined that after sound bearing and sound source distance, by by sound bearing
The camera lens offset of camera is converted to, OIS moving lens is controlled by software, sound source position is located at camera shooting visual field
Central area；Meanwhile by the analyzing and processing to sound source distance, by Gaussian imaging equation, sound source position is obtained in camera lens
In image distance, and then according to image distance control camera lens passage, to sound source position carry out auto-focusing.In such manner, it is possible to so that sound source position
Put the center for being located at screen in the preview interface of camera and be apparent from.
When the method for the present invention is applied to the photographed scene, the particular location of spokesman can be both navigated to the very first time,
The speech process of spokesman can also be clearly captured, it is not necessary to which the manual moving lens of user is simultaneously focused again, is saved cumbersome
Step, so as to lift Consumer's Experience.
Further, continue by taking photographed scene two as an example, it is determined that after sound bearing and sound source distance, by by the sound source side
Position is converted to the camera lens offset of camera, and OIS moving lens is controlled by software, sound source position is located at camera shooting and regards
The central area of field；Meanwhile by the analyzing and processing to sound source distance, by Gaussian imaging equation, sound source position is obtained in mirror
Image distance in head, and then camera lens passage is controlled according to image distance, auto-focusing is carried out to sound source position.In such manner, it is possible to so that sound
Source position positioned at the center of screen and is apparent from the preview interface of camera；
When there is another participant to make a speech, mobile terminal then uses above-mentioned processing step, makes new sound source (new hair
Speaker) it is located at the center of camera lens；So it is filmed, whom whose speech camera lens will be inclined to and carry out auto-focusing, but ought not have
When detecting someone's speech, camera can return to original state and continue to shoot, and then continue weight when someone makes a speech again
Multiple above-mentioned process, until shooting stops.
So, user hand-held mobile terminal need not be directed at each participant and shot always, only need to will it is mobile eventually
End is placed in a correct position, by using the image pickup method of the present invention, the speech process of each spokesman is clearly recorded, to user
For, it is not only convenient and practical.
On the basis of the embodiment shown in above-mentioned Fig. 1, it is preferred that before step 101, methods described also includes：
In preset time period, the speech data of at least three microphones collection is detected；
If being detected in preset time period, at least three microphone collects speech data, performs the acquisition
The step of speech data of at least three microphones collection；
Moreover, it is preferred that, after step 103, methods described also includes：
If being detected in preset time period, at least three microphone does not collect speech data, according to adjustment
The acquisition parameters of the camera afterwards, the camera is recovered into acquisition parameters the parameter setting before adjusting.
In this step, preset time period can be set according to actual conditions, be not specifically limited here.
Further, camera is recovered to acquisition parameters to the specific steps of the parameter setting before adjusting：According to camera lens before
Offset, opposite direction adjustment camera, make camera lens return to before parameter setting before acquisition parameters adjustment, and continue recording and regard
Frequently.Also continue to detect the input of voice signal simultaneously, in order to carry out the sound Sources Detection of next time, until mobile terminal stops record
Picture.
In summary, image pickup method provided in an embodiment of the present invention, when the camera of mobile terminal shoots video, pass through
Voice data in microphone acquisition surrounding shooting environmental on mobile terminals is set, and according to the voice data, determines sound
The orientation and distance in source, and then by the orientation and distance of sound source, realize the focusing shooting to sound source corresponding position.In this way,
So that mobile terminal is to special scenes (such as video conference) when carrying out video capture, by the orientation of sound source determined and away from
From, can fast positioning to sound source position, and focusing shooting is carried out to it, and shoot that step is simple, and lifting video is overall
Shooting effect and Consumer's Experience, while also improve video capture efficiency.
As shown in figure 4, the mobile terminal structure schematic diagram provided for one embodiment of the invention, the mobile terminal is included extremely
Few three microphones.Wherein, the mobile terminal 200 includes：
Acquisition module 201, for during camera collection image, obtaining at least three microphones collection
Speech data；
Sound source determining module 202, for according to the speech data, determining the sound bearing and sound source of the speech data
Distance；
Adjusting module 203 is shot, for according to the sound bearing and the sound source distance, the shooting for adjusting camera to be joined
Number；
Wherein, the sound bearing is orientation of the sound source relative to the camera；The sound source distance is sound source and institute
State the distance between camera.
On the basis of Fig. 4, it is preferred that the speech data includes：Language in the photographed scene of each microphone collection
The voice signal voltage of sound data；As shown in figure 5, the sound source determining module 202 includes：
Sound bearing determination sub-module 2021, for according to the voice signal voltage, the speech data to be calculated
Sound bearing.
Preferably, at least three microphone includes：First microphone, second microphone and the 3rd microphone；It is described
Speech data includes：Very first time difference and the second Mike of voice signal are received between first microphone and the 3rd microphone
The second time difference of voice signal is received between wind and the 3rd Mike side, the 3rd microphone is at least three Mike
Microphone in wind with the distance of the camera within a preset range；
The sound source determining module 202 includes：
Acquisition submodule 2022, for obtain between first microphone and the second microphone first distance,
Second distance and first microphone and the 3rd Mike between the second microphone and the 3rd microphone
The 3rd distance between wind；
Sound source apart from determination sub-module 2023, for based on the very first time is poor, the second time difference, described first away from
From with a distance from, the second distance and the described 3rd, the distance between the sound source and the camera is calculated.
Preferably, the sound source includes apart from determination sub-module 2023：
Sound source distance determining unit 20231, for according to the first formula D1=L-T1VS, the second formula D2=L-T2VSAnd
3rd formulaMeter
Calculation obtains the sound source distance of the speech data；
Wherein, D1Represent the distance between sound source and the first microphone；D2Represent between sound source and second microphone away from
From；L represents the distance between sound source and the 3rd microphone；T1Represent that the very first time is poor；T2Represented for the second time difference；VSFor sound
Aerial spread speed；d1Represent the first distance between the first microphone and second microphone；d2Represent second microphone
With the second distance between the 3rd microphone；d3Represent the 3rd distance between the first microphone and the 3rd microphone；p1=(d3+
D1+L)/2；p2=(d2+D2+L)/2；p3=(D1+D2+d1)/2；p4=(d1+d2+d3)/2。
Preferably, the shooting adjusting module 203 includes：
Direction adjusts submodule 2031, for according to the sound bearing, adjusting the shooting direction of the camera；
Wherein, after the shooting direction for adjusting the camera, the sound source is located at the current shooting of the camera and regarded
The central area of field.
Preferably, the direction adjustment submodule 2031 includes：
Conversion processing unit 20311, for carrying out conversion process to the sound bearing, obtain the camera lens of the camera
Offset；
Direction adjustment unit 20312, for according to the camera lens offset, controlling the camera towards the sound bearing
Move.
Preferably, the shooting adjusting module 203 also includes：
Focus shooting submodule 2032, for according to the sound bearing, adjust the camera shooting direction it
Afterwards, according to the sound source distance, sound source position is focused.
Preferably, the focusing shooting submodule 2032 includes：
Image distance computing unit 20321, for according to formula 1/U+1/V=1/F, the sound source to be calculated in the shooting
Image distance in the camera lens of head；
Focusing shooting unit 20322, for according to the image distance, controlling the camera lens to elapse to the imaging of the camera
At the position of face；
Wherein, U represents the sound source distance, and V represents image distance, and F represents focal length.
Preferably, the mobile terminal 200 also includes：
Detection module 204, for before the speech data of at least three microphone collection is obtained, in preset time
In section, the speech data of at least three microphones collection is detected；
Wherein, the acquisition module 201 is specifically used for, and at least three Mikes elegance is detected in preset time period
When collecting speech data, the speech data of at least three microphones collection is obtained；
The mobile terminal 200 also includes：
Camera recovery module 205, for according to the sound bearing and the sound source distance, adjusting the bat of camera
Take the photograph after parameter, at least three microphone is when collecting voice signal, after adjustment in preset time period
The acquisition parameters of the camera, the camera is recovered into acquisition parameters the parameter setting before adjusting.
Mobile terminal provided in an embodiment of the present invention, during the camera collection image of mobile terminal, by obtaining
Modulus block obtains the speech data of the microphone collection on mobile terminal, and sound source determining module determines sound according to the speech data
Source orientation and sound source distance, and then adjusting module is shot by sound bearing and sound source distance, adjust the acquisition parameters of camera.
So so that mobile terminal passes through the sound bearing determined when carrying out video capture to special scenes (such as video conference)
And sound source distance, can fast positioning shot to sound source position, and to it, and shoot step it is simple, lifted video
Overall shooting effect and Consumer's Experience, while also improve video capture efficiency.
Mobile terminal provided in an embodiment of the present invention can realize that mobile terminal is realized in Fig. 1 to Fig. 3 embodiment of the method
Each process, to avoid repeating, repeat no more here.
Fig. 6 is a kind of hardware architecture diagram for the mobile terminal for realizing each embodiment of the present invention, the mobile terminal 300
Including but not limited to：It is radio frequency unit 301, mixed-media network modules mixed-media 302, audio output unit 303, input block 304, sensor 305, aobvious
Show the parts such as unit 306, user input unit 307, interface unit 308, memory 309, processor 310 and power supply 311.
It will be understood by those skilled in the art that the mobile terminal structure shown in Fig. 6 does not form the restriction to mobile terminal, it is mobile whole
End can be included than illustrating more or less parts, either combine some parts or different parts arrangement.In the present invention
In embodiment, mobile terminal includes but is not limited to mobile phone, tablet personal computer, notebook computer, palm PC, car-mounted terminal, can worn
Wear equipment and pedometer etc..
Wherein, processor 310, for during camera collection image, obtaining at least three Mikes elegance
The speech data of collection；According to the speech data, the sound bearing and sound source distance of the speech data are determined；According to the sound
Source orientation and sound source distance, adjust the acquisition parameters of camera；Wherein, the sound bearing is sound source relative to the camera
Orientation；The sound source distance is the distance between sound source and the camera.
Mobile terminal 300 can realize each process that mobile terminal is realized in previous embodiment, to avoid repeating, here
Repeat no more.
The mobile terminal 300 of the embodiment of the present invention so that mobile terminal regards to special scenes (such as video conference)
When frequency is shot, by the sound bearing and sound source distance determined, can fast positioning clapped to sound source position, and to it
Take the photograph, and shooting step is simple, lifts video entirety shooting effect and Consumer's Experience, while also improve video capture efficiency.
It should be understood that in the embodiment of the present invention, radio frequency unit 301 can be used for receiving and sending messages or communication process in, signal
Reception and transmission, specifically, by from base station downlink data receive after, handled to processor 310；In addition, will be up
Data are sent to base station.Generally, radio frequency unit 301 includes but is not limited to antenna, at least one amplifier, transceiver, coupling
Device, low-noise amplifier, duplexer etc..In addition, radio frequency unit 301 can also by wireless communication system and network and other set
Standby communication.
Mobile terminal has provided the user wireless broadband internet by mixed-media network modules mixed-media 302 and accessed, and such as helps user to receive
Send e-mails, browse webpage and access streaming video etc..
Audio output unit 303 can be receiving by radio frequency unit 301 or mixed-media network modules mixed-media 302 or in memory 309
It is sound that the voice data of storage, which is converted into audio signal and exported,.Moreover, audio output unit 303 can also be provided and moved
The audio output for the specific function correlation that dynamic terminal 300 performs is (for example, call signal receives sound, message sink sound etc.
Deng).Audio output unit 303 includes loudspeaker, buzzer and receiver etc..
Input block 304 is used to receive audio or video signal.Input block 304 can include graphics processor
(Graphics Processing Unit, GPU) 3041 and microphone 3042, graphics processor 3041 is in video acquisition mode
Or the static images or the view data of video obtained in image capture mode by image capture apparatus (such as camera) are carried out
Reason.Picture frame after processing may be displayed on display unit 306.Picture frame after the processing of graphics processor 3041 can be deposited
Storage is transmitted in memory 309 (or other storage mediums) or via radio frequency unit 301 or mixed-media network modules mixed-media 302.Mike
Wind 3042 can receive sound, and can be voice data by such acoustic processing.Voice data after processing can be
The form output of mobile communication base station can be sent to via radio frequency unit 301 by being converted in the case of telephone calling model.
Mobile terminal 300 also includes at least one sensor 305, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity transducer, wherein, ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 3061, and proximity transducer can close when mobile terminal 300 is moved in one's ear
Display panel 3061 and/or backlight.As one kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axles) size of acceleration, size and the direction of gravity are can detect that when static, available for identification mobile terminal posture (ratio
Such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap)；Pass
Sensor 305 can also include fingerprint sensor, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, wet
Meter, thermometer, infrared ray sensor etc. are spent, will not be repeated here.
Display unit 306 is used for the information for showing the information inputted by user or being supplied to user.Display unit 306 can wrap
Display panel 3061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configures display panel 3061.
User input unit 307 can be used for the numeral or character information for receiving input, and produce the use with mobile terminal
The key signals input that family is set and function control is relevant.Specifically, user input unit 307 include contact panel 3071 and
Other input equipments 3072.Contact panel 3071, also referred to as touch-screen, collect touch operation of the user on or near it
(for example user uses any suitable objects or annex such as finger, stylus on contact panel 3071 or in contact panel 3071
Neighbouring operation).Contact panel 3071 may include both touch detecting apparatus and touch controller.Wherein, touch detection
Device detects the touch orientation of user, and detects the signal that touch operation is brought, and transmits a signal to touch controller；Touch control
Device processed receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives processor 310, receiving area
Manage the order that device 310 is sent and performed.It is furthermore, it is possible to more using resistance-type, condenser type, infrared ray and surface acoustic wave etc.
Type realizes contact panel 3071.Except contact panel 3071, user input unit 307 can also include other input equipments
3072.Specifically, other input equipments 3072 can include but is not limited to physical keyboard, function key (such as volume control button,
Switch key etc.), trace ball, mouse, action bars, will not be repeated here.
Further, contact panel 3071 can be covered on display panel 3061, when contact panel 3071 is detected at it
On or near touch operation after, send processor 310 to determine the type of touch event, be followed by subsequent processing device 310 according to touch
The type for touching event provides corresponding visual output on display panel 3061.Although in figure 6, contact panel 3071 and display
Panel 3061 is the part independent as two to realize the input of mobile terminal and output function, but in some embodiments
In, can be integrated by contact panel 3071 and display panel 3061 and realize input and the output function of mobile terminal, it is specific this
Place does not limit.
Interface unit 308 is the interface that external device (ED) is connected with mobile terminal 300.For example, external device (ED) can include
Line or wireless head-band earphone port, external power source (or battery charger) port, wired or wireless FPDP, storage card end
Mouth, port, audio input/output (I/O) port, video i/o port, earphone end for connecting the device with identification module
Mouthful etc..Interface unit 308 can be used for receive the input (for example, data message, electric power etc.) from external device (ED) and
One or more elements that the input received is transferred in mobile terminal 300 can be used in the He of mobile terminal 300
Data are transmitted between external device (ED).
Memory 309 can be used for storage software program and various data.Memory 309 can mainly include storing program area
And storage data field, wherein, storing program area can storage program area, application program (such as the sound needed at least one function
Sound playing function, image player function etc.) etc.；Storage data field can store according to mobile phone use created data (such as
Voice data, phone directory etc.) etc..In addition, memory 309 can include high-speed random access memory, can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 310 is the control centre of mobile terminal, utilizes each of various interfaces and the whole mobile terminal of connection
Individual part, by running or performing the software program and/or module that are stored in memory 309, and call and be stored in storage
Data in device 309, the various functions and processing data of mobile terminal are performed, so as to carry out integral monitoring to mobile terminal.Place
Reason device 310 may include one or more processing units；Preferably, processor 310 can integrate application processor and modulatedemodulate is mediated
Device is managed, wherein, application processor mainly handles operating system, user interface and application program etc., and modem processor is main
Handle radio communication.It is understood that above-mentioned modem processor can not also be integrated into processor 310.
Mobile terminal 300 can also include the power supply 311 (such as battery) to all parts power supply, it is preferred that power supply 311
Can be logically contiguous by power-supply management system and processor 310, so as to realize management charging by power-supply management system, put
The function such as electricity and power managed.
In addition, mobile terminal 300 includes some unshowned functional modules, will not be repeated here.
Preferably, the embodiment of the present invention also provides a kind of mobile terminal, including processor, memory, is stored in memory
Computer program that is upper and can running on the processor, the computer program realize above-mentioned shooting side when being executed by processor
Each process of method embodiment, and identical technique effect can be reached, to avoid repeating, repeat no more here.
The embodiment of the present invention also provides a kind of computer-readable recording medium, and meter is stored with computer-readable recording medium
Calculation machine program, the computer program realize each process of above-mentioned image pickup method embodiment when being executed by processor, and can reach
Identical technique effect, to avoid repeating, repeat no more here.Wherein, described computer-readable recording medium, deposited Ru read-only
Reservoir (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM),
Magnetic disc or CD etc..
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements not only include those key elements, and
And also include the other element being not expressly set out, or also include for this process, method, article or device institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Other identical element also be present in the process of key element, method, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme is substantially done to prior art in other words
Going out the part of contribution can be embodied in the form of software product, and the computer software product is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal (can be mobile phone, computer, service
Device, air conditioner, or network equipment etc.) perform method described in each embodiment of the present invention.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, belong within the protection of the present invention.
Claims (20)
1. a kind of image pickup method, applied to mobile terminal, the mobile terminal includes at least three microphones, it is characterised in that
Methods described includes：
During camera collection image, the speech data of at least three microphones collection is obtained；
According to the speech data, the sound bearing and sound source distance of the speech data are determined；
According to the sound bearing and the sound source distance, the acquisition parameters of camera are adjusted；
Wherein, the sound bearing is orientation of the sound source relative to the camera；The sound source distance is taken the photograph for sound source with described
As the distance between head.
2. image pickup method according to claim 1, it is characterised in that the speech data includes：Each microphone collection
Photographed scene in speech data voice signal voltage；
It is described according to the speech data, determine the speech data sound bearing and sound source apart from the step of, including：
According to the voice signal voltage, the sound bearing of the speech data is calculated.
3. image pickup method according to claim 1, it is characterised in that at least three microphone includes：First Mike
Wind, second microphone and the 3rd microphone；The speech data includes：Language is received between first microphone and the 3rd microphone
The second time difference of voice signal, institute are received between the very first time difference and second microphone and the 3rd microphone of sound signal
The 3rd microphone is stated as the microphone at least three microphone with the distance of the camera within a preset range；
It is described according to the speech data, determine the speech data sound bearing and sound source apart from the step of, including：
Obtain between first microphone and the second microphone first distance, the second microphone and the described 3rd
The 3rd distance between second distance and first microphone and the 3rd microphone between microphone；
Based on the very first time is poor, the second time difference, the first distance, the second distance and the 3rd distance, meter
Calculation obtains the sound source distance of the speech data.
4. image pickup method according to claim 3, it is characterised in that described according to the very first time is poor, the second time
Poor, described first distance, the second distance and the 3rd distance, the step of the sound source distance of the speech data is calculated
Suddenly, including：
According to the first formula D1=L-T1VS, the second formula D2=L-T2VSAnd the 3rd formulaInstitute is calculated
State the sound source distance of speech data；
Wherein, D1Represent the distance between sound source and the first microphone；D2Represent the distance between sound source and second microphone；L tables
Show the distance between sound source and the 3rd microphone；T1Represent that the very first time is poor；T2Represented for the second time difference；VSIt is sound in air
In spread speed；d1Represent the first distance between the first microphone and second microphone；d2Represent second microphone and the 3rd
Second distance between microphone；d3Represent the 3rd distance between the first microphone and the 3rd microphone；p1=(d3+D1+L)/
2；p2=(d2+D2+L)/2；p3=(D1+D2+d1)/2；p4=(d1+d2+d3)/2。
5. image pickup method according to claim 1, it is characterised in that it is described according to the sound bearing and the sound source away from
From, the step of adjusting the acquisition parameters of camera, including：
According to the sound bearing, the shooting direction of the camera is adjusted；
Wherein, after the shooting direction for adjusting the camera, the sound source is located at the current shooting visual field of the camera
Central area.
6. image pickup method according to claim 5, it is characterised in that it is described according to the sound bearing, taken the photograph described in adjustment
As head shooting direction the step of, including：
Conversion process is carried out to the sound bearing, obtains the camera lens offset of the camera；
According to the camera lens offset, the camera is controlled to be moved towards the sound bearing.
7. image pickup method according to claim 5, it is characterised in that according to the sound bearing, adjust the camera
Shooting direction the step of after, methods described also includes：
According to the sound source distance, sound source position is focused.
8. image pickup method according to claim 7, it is characterised in that it is described according to the sound source distance, to sound source position
The step of being focused, including：
According to formula 1/U+1/V=1/F, image distance of the sound source in the camera lens of the camera is calculated；
According to the image distance, the camera lens is controlled to elapse to the imaging surface position of the camera；
Wherein, U represents the sound source distance, and V represents image distance, and F represents focal length.
9. image pickup method according to claim 1, it is characterised in that described to obtain what at least three microphone gathered
Before the step of speech data, in addition to：
In preset time period, the speech data of at least three microphones collection is detected；
If being detected in preset time period, at least three microphone collects speech data, performs described in the acquisition
The step of speech data of at least three microphones collection；
It is described according to the sound bearing and the sound source distance, after the step of adjusting the acquisition parameters of camera, the side
Method also includes：
If being detected in preset time period, at least three microphone does not collect speech data, after adjustment
The acquisition parameters of the camera, the camera is recovered into acquisition parameters the parameter setting before adjusting.
10. a kind of mobile terminal, the mobile terminal includes at least three microphones, it is characterised in that including：
Acquisition module, for during camera collection image, obtaining the voice number of at least three microphones collection
According to；
Sound source determining module, for according to the speech data, determining the sound bearing and sound source distance of the speech data；
Adjusting module is shot, for according to the sound bearing and the sound source distance, adjusting the acquisition parameters of camera；
Wherein, the sound bearing is orientation of the sound source relative to the camera；The sound source distance is taken the photograph for sound source with described
As the distance between head.
11. mobile terminal according to claim 10, it is characterised in that the speech data includes：Each Mike's elegance
The voice signal voltage of speech data in the photographed scene of collection；
The sound source determining module includes：
Sound bearing determination sub-module, for the sound source side of the speech data according to the voice signal voltage, to be calculated
Position.
12. mobile terminal according to claim 10, it is characterised in that at least three microphone includes：First wheat
Gram wind, second microphone and the 3rd microphone；The speech data includes：Received between first microphone and the 3rd microphone
The second time difference of voice signal is received between the very first time difference and second microphone and the 3rd microphone of voice signal,
3rd microphone is the microphone with the distance of the camera within a preset range at least three microphone；
The sound source determining module includes：
Acquisition submodule, for obtaining the first distance between first microphone and the second microphone, described second
Between second distance and first microphone and the 3rd microphone between microphone and the 3rd microphone
3rd distance；
Sound source apart from determination sub-module, for based on the very first time is poor, the second time difference, first distance, described the
Two distances and the 3rd distance, are calculated the distance between the sound source and the camera.
13. mobile terminal according to claim 12, it is characterised in that the sound source includes apart from determination sub-module：
Sound source distance determining unit, for according to the first formula D1=L-T1VS, the second formula D2=L-T2VSAnd the 3rd formulaInstitute is calculated
State the sound source distance of speech data；
Wherein, D1Represent the distance between sound source and the first microphone；D2Represent the distance between sound source and second microphone；L tables
Show the distance between sound source and the 3rd microphone；T1Represent that the very first time is poor；T2Represented for the second time difference；VSIt is sound in air
In spread speed；d1Represent the first distance between the first microphone and second microphone；d2Represent second microphone and the 3rd
Second distance between microphone；d3Represent the 3rd distance between the first microphone and the 3rd microphone；p1=(d3+D1+L)/
2；p2=(d2+D2+L)/2；p3=(D1+D2+d1)/2；p4=(d1+d2+d3)/2。
14. mobile terminal according to claim 10, it is characterised in that the shooting adjusting module includes：
Direction adjusts submodule, for according to the sound bearing, adjusting the shooting direction of the camera；
Wherein, after the shooting direction for adjusting the camera, the sound source is located at the current shooting visual field of the camera
Central area.
15. mobile terminal according to claim 14, it is characterised in that the direction adjustment submodule includes：
Conversion processing unit, for carrying out conversion process to the sound bearing, obtain the camera lens offset of the camera；
Direction adjustment unit, for according to the camera lens offset, controlling the camera to be moved towards the sound bearing.
16. mobile terminal according to claim 14, it is characterised in that the shooting adjusting module also includes：
Focus shooting submodule, for according to the sound bearing, after the shooting direction for adjusting the camera, according to institute
Sound source distance is stated, sound source position is focused.
17. mobile terminal according to claim 16, it is characterised in that the focusing shooting submodule includes：
Image distance computing unit, for according to formula 1/U+1/V=1/F, camera lens of the sound source in the camera to be calculated
In image distance；
Focus shooting unit, for according to the image distance, controlling the imaging surface institute that the camera lens is elapsed to the camera in place
Put place；
Wherein, U represents the sound source distance, and V represents image distance, and F represents focal length.
18. mobile terminal according to claim 10, it is characterised in that the mobile terminal also includes：
Detection module, for before the speech data of at least three microphones collection is obtained, in preset time period, examining
Survey the speech data of at least three microphones collection；
Wherein, the acquisition module, specifically for detecting that at least three microphone collects language in preset time period
During sound data, the speech data of at least three microphones collection is obtained；
The mobile terminal also includes：
Camera recovery module, for according to the sound bearing and the sound source distance, adjusting the acquisition parameters of camera
Afterwards, when detecting that at least three microphone does not collect speech data in preset time period, after adjustment
The acquisition parameters of the camera, the camera is recovered into acquisition parameters the parameter setting before adjusting.
A kind of 19. mobile terminal, it is characterised in that including：Processor, memory and it is stored on the memory and can be in institute
The computer program run on processor is stated, the computer program is realized such as claim 1 to 9 during the computing device
Any one of image pickup method the step of.
20. a kind of computer-readable recording medium, it is characterised in that computer journey is stored on the computer-readable recording medium
Sequence, the computer program realize the step of image pickup method as claimed in any one of claims 1-9 wherein when being executed by processor
Suddenly.
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