CN107888829A - Focusing method, mobile terminal and the storage medium of mobile terminal - Google Patents
Focusing method, mobile terminal and the storage medium of mobile terminal Download PDFInfo
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- CN107888829A CN107888829A CN201711183828.5A CN201711183828A CN107888829A CN 107888829 A CN107888829 A CN 107888829A CN 201711183828 A CN201711183828 A CN 201711183828A CN 107888829 A CN107888829 A CN 107888829A
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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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Abstract
The invention discloses a kind of focusing method of mobile terminal, mobile terminal and storage medium；Wherein, method includes：Obtain at least two candidate's focal modes when the mobile terminal carries out IMAQ；It is based respectively on every kind of candidate's focal modes and trial focusing is carried out to destination object, obtains depth of field value when each candidate's focal modes attempt focusing；Determine the confidence level that depth of field value when every kind of candidate's focal modes attempt focusing is the actual depth of field；Identified confidence level in candidate's focal modes is taken to meet the focal modes of preparatory condition；The depth of field value of focal modes output based on selection is focused to the destination object.Improve focus effects and focusing efficiency so that the shooting effect of user more preferably, enhances Consumer's Experience.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of focusing method of mobile terminal, mobile terminal and storage
Medium.
Background technology
User is during mobile terminal shooting image is used, it is necessary to be focused to the image being taken.Focusing
Process is to change object distance and image distance by the Focusing mechanism of mobile terminal so that the process of subject blur-free imaging.
At present, conventional image focusing method mainly includes two classes：It is (infrared that the first kind is to rely on specific wavelength light
Light) transmitting and reception, as laser focus；Another kind is to rely on the characteristics of image of subject in itself, as phase is focused
(PDAF, Phase Detection Auto Focus)；By what is run into when user carries out image taking using mobile terminal
Scene is often different, and the first kind focuses mode because it uses the light of the specific wavelength of its own transmission, therefore is not suitable for
Strong laser field scape, subject are scenes of transparent material such as glass etc., and requirement of the second class focusing mode to light is high, is not suitable for
Half-light scene；However, how to be needed according to actual photographed effect (focus effects), focused from suitable focal modes,
Effective solution is there is no in correlation technique.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of movement to solve at least one problem present in prior art
Focusing method, mobile terminal and the storage medium of terminal.
What the technical scheme of the embodiment of the present invention was realized in：
The embodiments of the invention provide a kind of focusing method of mobile terminal, methods described includes：
Obtain at least two candidate's focal modes when the mobile terminal carries out IMAQ；
It is based respectively on every kind of candidate's focal modes and trial focusing is carried out to destination object, obtains each candidate's focal modes and attempt
Depth of field value during focusing；
Determine the confidence level that depth of field value when every kind of candidate's focal modes attempt focusing is the actual depth of field；
Choose the focal modes that identified confidence level in candidate's focal modes meets preparatory condition；
The depth of field value of focal modes output based on selection is focused to the destination object.
In such scheme, the depth of field value determined when every kind of candidate's focal modes attempt focusing is the credible of the actual depth of field
Degree, including：
It is the first focal modes in response to candidate's focal modes, acquisition is attempted based on first focal modes
The first image corresponding to left pixel and the second image corresponding to right pixel during focusing；
Feature extraction is carried out to described first image and second image respectively；
Characteristic matching is carried out to described first image and second image based on the feature extracted, obtains described first
The images match degree of image and second image, attempted obtained images match degree as first focal modes
Depth of field value during focusing is the confidence level of the actual depth of field.
In such scheme, the depth of field value determined when every kind of candidate's focal modes attempt focusing is the credible of the actual depth of field
Degree, including：
It is the second focal modes in response to candidate's focal modes, acquisition is attempted based on second focal modes
During focusing, it is projected to the transmitting light intensity of the light of the destination object and receives light intensity；
The ratio size of the reception light intensity and the transmitting light intensity is determined, using the ratio size of determination as described in
Depth of field value when second focal modes attempt focusing is the confidence level of the actual depth of field.
In such scheme, the focusing chosen identified confidence level in candidate's focal modes and meet preparatory condition
Pattern, including：
Include the first focal modes and the second focal modes in response at least two candidates focal modes, described first
Confidence level corresponding to focal modes and second focal modes is satisfied by preparatory condition, by first focal modes trial pair
Depth of field value when depth of field value when burnt is attempted to focus with second focal modes is compared；
Choose target focal modes of the less focal modes of depth of field value when attempting focusing as the destination object.
In such scheme, the focusing chosen identified confidence level in candidate's focal modes and meet preparatory condition
Pattern, including：
Include the first focal modes and the second focal modes in response at least two candidates focal modes, described first
Confidence level corresponding to focal modes and second focal modes is unsatisfactory for preparatory condition, and the mobile terminal has CAF
Pattern, choose target focal modes of the CAF patterns as the destination object.
In such scheme, methods described also includes：
During the depth of field value exported in response to the focal modes based on selection is focused to the destination object, institute
State confidence level corresponding to the focal modes of selection and no longer meet preparatory condition, the candidate of preparatory condition is met based on current credibility
Focal modes carry out pattern switching.
The embodiment of the present invention additionally provides a kind of mobile terminal, and the mobile terminal includes：
The memory, the processing routine for the focusing method of memory mobile terminal；
The processor, the processing routine of the focusing method for performing the mobile terminal stored in the memory, with
Realize following steps：
Obtain at least two candidate's focal modes when the mobile terminal carries out IMAQ；
It is based respectively on every kind of candidate's focal modes and trial focusing is carried out to destination object, obtains each candidate's focal modes and attempt
Depth of field value during focusing；
Determine the confidence level that depth of field value when every kind of candidate's focal modes attempt focusing is the actual depth of field；
Choose the focal modes that identified confidence level in candidate's focal modes meets preparatory condition；
The depth of field value of focal modes output based on selection is focused to the destination object.
In such scheme, the processor, it is the first focal modes to be additionally operable in response to candidate's focal modes, is obtained
Corresponding to the first image of left pixel and corresponding to right pixel when carrying out attempting to focus based on first focal modes
Second image；
Feature extraction is carried out to described first image and second image respectively；
Characteristic matching is carried out to described first image and second image based on the feature extracted, obtains described first
The images match degree of image and second image, attempted obtained images match degree as first focal modes
Depth of field value during focusing is the confidence level of the actual depth of field.
In such scheme, the processor, it is the second focal modes to be additionally operable in response to candidate's focal modes, is obtained
When attempt focusing based on second focal modes, it is projected to the transmitting light intensity of the light of the destination object and receives light
By force；
The ratio size of the reception light intensity and the transmitting light intensity is determined, using the ratio size of determination as described in
Depth of field value when second focal modes attempt focusing is the confidence level of the actual depth of field.
The embodiment of the present invention additionally provides a kind of storage medium, is stored with executable program, at the executable code
When managing device execution, the focusing method of above-mentioned mobile terminal is realized.
Using the focusing method of above-mentioned mobile terminal, mobile terminal and storage medium, mobile terminal in the embodiment of the present invention
According to the application scenarios being presently in, the confidence level of each candidate focal modes can be calculated automatically, and based on being calculated
Confidence level is adapted to the focal modes for meeting preparatory condition, is focused based on selected focal modes.Improve focus effects and
Focusing efficiency so that the shooting effect of user more preferably, enhances Consumer's Experience.
Brief description of the drawings
Fig. 1 is the hardware architecture diagram for the optional mobile terminal 100 for realizing each embodiment of the present invention；
Fig. 2 is the wireless communication system schematic diagram of mobile terminal 100 as shown in Figure 1；
Fig. 3 is the optional schematic flow sheet of the focusing method of mobile terminal in the embodiment of the present invention；
Fig. 4 is the optional schematic flow sheet of the focusing method of mobile terminal in the embodiment of the present invention；
Fig. 5 is the optional schematic diagram of the composition structure of mobile terminal in the embodiment of the present invention.
Embodiment
It should be appreciated that the technical scheme that the specific embodiments described herein are merely illustrative of the present invention, is not used to
Limit protection scope of the present invention.
Describe to realize the mobile terminal of each embodiment of the present invention referring now to accompanying drawing.In follow-up description, use
For represent element such as " module ", " part " or " unit " suffix only for be advantageous to the present invention explanation, itself
Not specific meaning.Therefore, " module " can be used mixedly with " part ".
Mobile terminal can be implemented in a variety of manners.For example, the terminal described in the present invention can include such as moving
It is phone, smart phone, notebook computer, digit broadcasting receiver, personal digital assistant (PDA), tablet personal computer (PAD), portable
The fixation of the mobile terminal of formula multimedia player (PMP), guider etc. and such as digital TV, desktop computer etc.
Terminal.Hereinafter it is assumed that terminal is mobile terminal.However, it will be understood by those skilled in the art that except being used in particular for moving mesh
Element outside, construction according to the embodiment of the present invention can also apply to the terminal of fixed type.
Fig. 1 is the hardware configuration signal for the mobile terminal 100 for realizing each embodiment of the present invention, as shown in figure 1, movement is eventually
End 100 can include：RF (Radio Frequency, radio frequency) unit 101, WiFi module 102, audio output unit 103, A/V
(audio/video) input block 104, sensor 105, display unit 106, user input unit 107, interface unit 108, storage
The parts such as device 109, processor 110 and power supply 111.It will be understood by those skilled in the art that the mobile terminal shown in Fig. 1
Structure does not form the restriction to mobile terminal, and mobile terminal can be included than illustrating more or less parts, or combination
Some parts, or different parts arrangement.
The all parts of mobile terminal are specifically introduced with reference to Fig. 1：
Radio frequency unit 101 can be used for receiving and sending messages or communication process in, the reception and transmission of signal, specifically, by base station
Downlink information receive after, handled to processor 110；In addition, up data are sent to base station.Generally, radio frequency unit 101
Including but not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier, duplexer etc..In addition, penetrate
Frequency unit 101 can also be communicated by radio communication with network and other equipment.Above-mentioned radio communication can use any communication
Standard or agreement, including but not limited to GSM (Global System of Mobile communication, global system for mobile telecommunications
System), GPRS (General Packet Radio Service, general packet radio service), CDMA2000 (Code
Division Multiple Access 2000, CDMA 2000), WCDMA (Wideband Code Division
Multiple Access, WCDMA), TD-SCDMA (Time Division-Synchronous Code
Division Multiple Access, TD SDMA), FDD-LTE (Frequency Division
Duplexing-Long Term Evolution, FDD Long Term Evolution) and TDD-LTE (Time Division
Duplexing-Long Term Evolution, time division duplex Long Term Evolution) etc..
WiFi belongs to short range wireless transmission technology, and mobile terminal can help user to receive and dispatch electricity by WiFi module 102
Sub- mail, browse webpage and access streaming video etc., it has provided the user wireless broadband internet and accessed.Although Fig. 2 shows
Go out WiFi module 102, but it is understood that, it is simultaneously not belonging to must be configured into for mobile terminal, completely can be according to need
To be omitted in the essential scope for do not change invention.
Audio output unit 103 can be in call signal reception pattern, call mode, record mould in mobile terminal 100
When under formula, speech recognition mode, broadcast reception mode isotype, by radio frequency unit 101 or WiFi module 102 it is receiving or
It is sound that the voice data stored in memory 109, which is converted into audio signal and exported,.Moreover, audio output unit 103 is also
The audio output related to the specific function that mobile terminal 100 performs can be provided (for example, call signal receives sound, message
Receive sound etc.).Audio output unit 103 can include loudspeaker, buzzer etc..
A/V input blocks 104 are used to receive audio or video signal.A/V input blocks 104 can include graphics processor
(Graphics Processing Unit, GPU) 1041 and microphone 1042, graphics processor 1041 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 106.Picture frame after the processing of graphics processor 1041 can be deposited
Storage is transmitted in memory 109 (or other storage mediums) or via radio frequency unit 101 or WiFi module 102.Mike
Wind 1042 can receive in the operational modes such as telephone calling model, logging mode, speech recognition mode via microphone 1042
Sound (voice data), and can be voice data by such acoustic processing.Audio (voice) data after processing can be with
The form output of mobile communication base station can be sent to via radio frequency unit 101 by being converted in the case of telephone calling model.Wheat
Gram wind 1042 can implement various types of noises and eliminate (or suppression) algorithms to receive and sending audio to eliminate (or suppression)
Caused noise or interference during signal.
Mobile terminal 100 also includes at least one sensor 105, 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 1061, and proximity transducer can close when mobile terminal 100 is moved in one's ear
Display panel 1061 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, the application available for identification mobile phone posture
(such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, percussion) etc.；
The fingerprint sensor that can also configure as mobile phone, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer,
The other sensors such as hygrometer, thermometer, infrared ray sensor, will not be repeated here.
Display unit 106 is used for the information for showing the information inputted by user or being supplied to user.Display unit 106 can wrap
Display panel 1061 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 1061.
User input unit 107 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 107 may include contact panel 1071 with
And other input equipments 1072.Contact panel 1071, 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 1071 or in contact panel 1071
Neighbouring operation), and corresponding attachment means are driven according to formula set in advance.Contact panel 1071 may include touch detection
Two parts of device and touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect touch operation band
The signal come, transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and by it
Contact coordinate is converted into, then gives processor 110, and the order sent of reception processing device 110 and can be performed.In addition, can
To realize contact panel 1071 using polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except contact panel
1071, user input unit 107 can also include other input equipments 1072.Specifically, other input equipments 1072 can wrap
Include but be not limited to physical keyboard, in function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc.
One or more, do not limit herein specifically.
In some embodiments, contact panel 1071 can cover display panel 1061, when contact panel 1071 detects
After touch operation on or near it, processor 110 is sent to determine the type of touch event, is followed by subsequent processing device 110
Corresponding visual output is provided on display panel 1061 according to the type of touch event.Although in fig. 2, contact panel 1071 with
Display panel 1061 is the part independent as two to realize the input of mobile terminal and output function, but in some implementations
In example, contact panel 1071 and display panel 1061 can be integrated and realize input and the output function of mobile terminal, specifically
Do not limit herein.
Interface unit 108 is connected the interface that can pass through as at least one external device (ED) with mobile terminal 100.For example,
External device (ED) can include wired or wireless head-band earphone port, external power source (or battery charger) port, wired or nothing
Line FPDP, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end
Mouth, video i/o port, ear port etc..Interface unit 108 can be used for receiving the input from external device (ED) (for example, data
Information, electric power etc.) and one or more elements that the input received is transferred in mobile terminal 100 or can be used for
Data are transmitted between mobile terminal 100 and external device (ED).
Memory 109 can be used for storage software program and various data.Memory 109 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 109 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 110 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 109, and call and be stored in storage
Data in device 109, the various functions and processing data of mobile terminal are performed, so as to carry out integral monitoring to mobile terminal.Place
Reason device 110 may include one or more processing units；Preferably, processor 110 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 110.
Mobile terminal 100 can also include the power supply 111 (such as battery) to all parts power supply, it is preferred that power supply 111
Can be logically contiguous by power-supply management system and processor 110, so as to realize management charging by power-supply management system, put
The function such as electricity and power managed.
Although Fig. 1 is not shown, mobile terminal 100 can also will not be repeated here including bluetooth module etc..
For the ease of understanding the embodiment of the present invention, the communications network system being based on below to the mobile terminal of the present invention enters
Row description.
Referring to Fig. 2, Fig. 2 is a kind of communications network system Organization Chart provided in an embodiment of the present invention, the communication network system
Unite as the LTE system of universal mobile communications technology, the UE that the LTE system includes communicating connection successively (User Equipment, is used
Family equipment) 201, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network, evolved UMTS lands
Ground wireless access network) 202, EPC (Evolved Packet Core, evolved packet-based core networks) 203 and operator IP operation
204。
Specifically, UE201 can be above-mentioned terminal 100, and here is omitted.
E-UTRAN202 includes eNodeB2021 and other eNodeB2022 etc..Wherein, eNodeB2021 can be by returning
Journey (backhaul) (such as X2 interface) is connected with other eNodeB2022, and eNodeB2021 is connected to EPC203,
ENodeB2021 can provide UE201 to EPC203 access.
EPC203 can include MME (Mobility Management Entity, mobility management entity) 2031, HSS
(Home Subscriber Server, home subscriber server) 2032, other MME2033, SGW (Serving Gate Way,
Gateway) 2034, PGW (PDN Gate Way, grouped data network gateway) 2035 and PCRF (Policy and
Charging Rules Function, policy and rate functional entity) 2036 etc..Wherein, MME2031 be processing UE201 and
The control node of signaling between EPC203, there is provided carrying and connection management.HSS2032 is all to manage for providing some registers
Such as the function of attaching position register (not shown) etc, and preserve some and used about service features, data rate etc.
The special information in family.All customer data can be transmitted by SGW2034, and PGW2035 can provide UE 201 IP
Address is distributed and other functions, and PCRF2036 is strategy and the charging control strategic decision-making of business data flow and IP bearing resources
Point, it selects and provided available strategy and charging control decision-making with charge execution function unit (not shown) for strategy.
IP operation 204 can include internet, Intranet, IMS (IP Multimedia Subsystem, IP multimedia
System) or other IP operations etc..
Although above-mentioned be described by taking LTE system as an example, those skilled in the art it is to be understood that the present invention not only
Suitable for LTE system, be readily applicable to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA with
And following new network system etc., do not limit herein.
Based on above-mentioned mobile terminal hardware configuration and communications network system, each embodiment of the inventive method is proposed.
Embodiment one
Fig. 3 is the focusing method of mobile terminal provided in an embodiment of the present invention, applied to mobile terminal, as shown in figure 3, this
The focusing method for the mobile terminal that inventive embodiments provide is related to step 301 to step 305, illustrates individually below.
Step 301：Obtain at least two candidate's focal modes when mobile terminal carries out IMAQ.
In actual applications, when user is shot using mobile terminal, mobile terminal detects the bat of user's triggering
Instruction is taken the photograph, performs the focus operation in IMAQ, triggers the execution of step 301.
In embodiments of the present invention, the image collecting device of mobile terminal possesses at least two candidate's focal modes, one
In embodiment, candidate's focal modes of mobile terminal can include the first focal modes and different from the first focal modes second
Focal modes；
Wherein, the first focal modes can be the focal modes of the characteristics of image dependent on subject in itself, such as phase
Focal modes, double take the photograph focusing；Second focal modes can be the transmitting dependent on specific wavelength light (infrared light) with receiving
Focal modes, such as laser focusing, structure light focusing；Certainly, in certain embodiments, mobile terminal can also have other focusings
Pattern, such as contrast focusing (also referred to as contrast formula focusing) (CAF, Contrast detection Auto Focus) etc..
Next several focal modes above-mentioned are illustrated.
Laser is focused, and is to be launched by recording infrared laser from device, is reflected by target surface, finally again by rangefinder
The time difference received, to calculate target to a kind of focusing mode of the distance of tester；Such as photographing device is A, is taken pictures
Object is B, and its principle is exactly to launch at the A after infrared laser (light of infrared wavelength) reached at B, then launches and be back to A, measures A
The distance between B then completes focusing.The focusing mode is stronger to dim light or pure color environmental suitability, is to belong to actively to focus
The focusing mode of type.
Structure light is focused, and structure light, which refers to some, has the light of AD HOC, and its mode pattern can be point, line, surface etc..Knot
The focusing of structure light is based on pumped FIR laser, known infrared mode (infrared light encoded) is projected into destination object, by addition
One infrared cmos imager receives the structured light patterns of body surface reflection, must be because of the solid of object due to receiving pattern
Type shape and deform, so as to finally determine depth information.It is this kind of dependent on specific for laser focusing and structure light focusing
The transmitting of wavelength light and the focal modes received, what it is due to its identification is the light source that oneself sends, even if subject does not have
Edge, as long as can fire back, so that it may obtain accurate depth of view information, and then focused based on the depth of field, suitable for bat closely
Take the photograph；However, it is not particularly suited for shooting of the subject for transparent substances such as glass, because light can cause the depth of field through object
Measurement error, the scene of spectral width, the outdoor scene of such as big sun, display scene it are not suitable for yet.
Phase is focused, and in phase focusing technology, the pixel of imaging sensor is made up of in pairs left and right pixel, mobile
Terminal obtains the first image by left pixel, and the second image is obtained by right pixel, and mobile terminal generates corresponding the respectively
The view data waveform of the view data waveform of one image and corresponding second image, when the data waveform and the second figure of the first image
When the data waveform of picture overlaps, it is known that be currently at focus state, now captured picture is the most clear, that is, mobile whole
Focusing is instructed in end by the phase difference of two data waveforms, masking pixel is reserved on photo-sensitive cell, for carrying out phase
Detection, defocus rate is converted to by the phase difference detected, instructs to focus by defocus rate, so as to realize accurate focusing.The focusing
Pattern moves repeatedly without camera lens, focus process block, but then, due to needing the masking pixel on imaging sensor
Carry out phase-detection, therefore requirement of the focal modes to light intensity is higher, is not easy to realize under dim light, the scope of application by
Limit.
It is double to take the photograph focusing, using human eye triangle polyester fibre principle, the transverse direction being imaged using destination object on the width view of left and right two
Existing difference (i.e. parallax) realizes the depth of field with the distance of destination object to imaging plane there is inversely prroportional relationship between coordinate
Calculate, and then focused based on the depth of field.
Contrast formula is focused, and the focal modes change according to the contrast of focal point picture, finds mirror during contrast maximum
Head position, namely the position accurately focused.In focus process, with starting to move to focus lens, picture is gradually clear, contrast
Degree is begun to ramp up, when picture is most clear, contrast highest when, be in focus state in fact, but terminal is not aware that, so
Moving lens is may proceed to, when finding that contrast begins to decline, eyeglass is further moved, it is found that contrast further declines, terminal
Learn and have already passed by focus, eyeglass return back to contrast highest position, completes focusing.It can be seen that the focal modes focus process
In, camera lens finishes from the focus to the end that starts to focus to be needed not stop to move, and is retracted after optimal focusing position of passing by, whole process
Focusing stroke is allowed to increase, focusing speed is slower, and efficiency is low.
Step 302：It is based respectively on every kind of candidate's focal modes and trial focusing is carried out to destination object, obtains each candidate's focusing
Pattern attempts depth of field value during focusing.
Here, actually implement when, mobile terminal is focused based on the depth of field, and before focusing in order to carry out be applied to ought
The focal modes of preceding application scenarios obtain each time, it is necessary to the candidate's focal modes possessed to itself carry out trial focusing one by one
Select depth of field value during focal modes trial focusing.
Step 303：Determine the confidence level that depth of field value when every kind of candidate's focal modes attempt focusing is the actual depth of field.
The confidence level being previously mentioned in embodiments of the present invention, the depth of field value for referring to the output of certain focal modes are the actual depth of field
Credibility, between 0 and 1.And for different candidate's focal modes, the calculating standard of its confidence level can be different.
In one embodiment, when candidate's focal modes are the first focal modes (such as phase focusing), such as lower section can be passed through
Formula determines the confidence level of first focal modes：
Obtain when carrying out attempting to focus based on the first focal modes corresponding to the first image of left pixel and corresponding to the right side
Second image of pixel；Feature extraction is carried out to the first image and the second image respectively；Based on the feature extracted to first
Image and the second image carry out characteristic matching, obtain the images match degree of the first image and the second image, the image that will be obtained
Depth of field value when matching degree is attempted to focus as the first focal modes is the confidence level of the actual depth of field.
Here, when actually implementing, the feature of the image of extraction can include one or more, such as：Edge, angle, region
Deng.In one embodiment, the feature of the image of extraction can be edge, be realized by rim detection to the first image and the second figure
The feature extraction of picture.Wherein, the edge of image refers to the set of its surrounding pixel gray scale those pixel jumpy, and it is figure
As most basic feature, marginal existence is in target, background and region.The basic thought of rim detection is in first detection image
Marginal point, marginal point is connected into profile according still further to certain strategy, so as to form cut zone.
In one embodiment, characteristic matching is carried out to the first image and the second image based on the feature extracted, obtains the
The images match degree of one image and the second image, including：
The edge at the edge of the described first image of extraction and second image of extraction is subjected to edge matching；It is based on
The described first image and the quantity of the same edge in second image matched, determine described first image and described the
The images match degree of two images.
In one embodiment, when candidate's focal modes are the second focal modes (such as laser focusing), such as lower section can be passed through
Formula determines the confidence level of first focal modes：
It is the second focal modes in response to candidate's focal modes, when acquisition attempt focusing based on the second focal modes,
It is projected to the transmitting light intensity of the light of destination object and receives light intensity；It is determined that light intensity is received with launching the ratio size of light intensity, will
Depth of field value when the ratio size of determination is attempted to focus as the second focal modes is the confidence level of the actual depth of field.
Step 304：Choose the focal modes that identified confidence level in candidate's focal modes meets preparatory condition.
Here, based on the above embodiment of the present invention, in actual applications, can pre-set corresponding focal modes can
Confidence threshold (such as 0.7), can when the believability threshold for the candidate's focal modes being calculated exceedes default believability threshold
Determine that it is the focal modes for meeting preparatory condition.
It is corresponding different when candidate's focal modes include the first focal modes and the second focal modes when actually implementing
Confidence level result of calculation, carry out the selection of following focal modes respectively：
1, confidence level corresponding to the first focal modes and second focal modes is satisfied by preparatory condition, by the first focusing
Depth of field value when depth of field value when pattern attempts focusing is attempted to focus with the second focal modes is compared；When choosing trial focusing
Target focal modes of the less focal modes of depth of field value as destination object.Using the first focal modes as laser focusing, the
Exemplified by two focal modes is phase focusings, if the confidence level of the two is satisfied by preparatory condition, when destination object is glass object,
Laser focal modes cause surveyed depth of field value bigger than normal, now, preferably selected because light can pass through the object of glass directive thereafter
Phase focal modes.
2, a kind of confidence level be present in the first focal modes and the second focal modes and meet preparatory condition, then choose meet it is pre-
If target focal modes of the focal modes of condition as destination object.
3, confidence level corresponding to the first focal modes and second focal modes is unsatisfactory for preparatory condition, and the shifting
Dynamic terminal has CAF patterns, chooses target focal modes of the CAF focal modes as destination object.
Here, it is necessary to illustrate, if the first focal modes or the second focal modes include two or more pair
Burnt pattern, when it is determined that confidence level to meet the focal modes of preparatory condition be the first focal modes or the second focal modes when, can
Randomly select one kind and be used as target focal modes.For example, the second focal modes include, laser is focused and structure light is focused, really
Fixed confidence level meets that the focal modes of preparatory condition are the second focal modes, randomly selects in laser focusing and structure light focusing
One kind is used as target focal modes.
Step 305：The depth of field value of focal modes output based on selection is focused to the destination object.
It should be noted that the process focused in the depth of field value that the focal modes based on selection export to destination object
In, if confidence level corresponding to the focal modes currently chosen no longer meets preparatory condition, default bar is met based on current credibility
Candidate's focal modes of part carry out pattern switching.
Using the above embodiment of the present invention, mobile terminal can calculate each automatically according to the application scenarios being presently in
The confidence level of candidate's focal modes, and the focal modes for meeting preparatory condition are adapted to based on the confidence level being calculated, based on choosing
Fixed focal modes are focused.Improve focus effects and focusing efficiency so that the shooting effect of user more preferably, enhances use
Experience at family.
Embodiment two
Fig. 4 is the focusing method of mobile terminal provided in an embodiment of the present invention, applied to mobile terminal, is implemented in the present invention
In example, mobile terminal has three kinds of laser focal modes, phase focal modes and contrast focal modes, as shown in figure 4, this hair
The focusing method for the mobile terminal that bright embodiment provides includes：
Step 401：Mobile terminal receives image capture instruction, obtains the focal modes itself having.
Step 402：Laser focal modes are respectively adopted, phase focal modes carry out trial focusing, determine each pattern pair
The confidence level answered.
Here, the confidence level being previously mentioned in embodiments of the present invention, the depth of field value for referring to the output of certain focal modes are actual
The credibility of the depth of field, between 0 and 1.And for different candidate's focal modes, the calculating standard of its confidence level can not
Together.
In embodiments of the present invention, for phase focal modes, its confidence level can be determined as follows：
Obtain when carrying out attempting to focus based on phase focal modes corresponding to the first image of left pixel and corresponding to the right side
Second image of pixel；Feature extraction is carried out to the first image and the second image respectively；Based on the feature extracted to first
Image and the second image carry out characteristic matching, obtain the images match degree of the first image and the second image, the image that will be obtained
Depth of field value when matching degree is attempted to focus as phase focal modes is the confidence level of the actual depth of field.
In the present embodiment, the feature of the image of extraction is edge, is realized by rim detection to the first image and second
The feature extraction of image.Accordingly, the calculating to the first image and the images match degree of the second image can be in the following way：
The edge at the edge of the described first image of extraction and second image of extraction is subjected to edge matching；It is based on
The described first image and the quantity of the same edge in second image matched, determine described first image and described the
The images match degree of two images.Exemplarily：It is 80 that the edge in the first image is obtained by rim detection, the second image
In edge be 100, obtain existing that 80 edges are identical by characteristic matching, the first image and the second image be calculated
Matching degree is 80%, by the mapping relations between default images match degree and the confidence level of focus operation, is obtained pair
The confidence level answered is 0.8.
In embodiments of the present invention, for laser focal modes, its confidence level can be determined as follows：
When acquisition attempt focusing based on laser focal modes, it is projected to the transmitting light intensity of the light of destination object and connects
Receive light intensity；It is determined that receiving light intensity with launching the ratio size of light intensity, attempted the ratio size of determination as laser focal modes
Depth of field value during focusing is the confidence level of the actual depth of field.Light to be projected to destination object illustrates exemplified by being infrared light,
If transmitting light intensity is 10mw, reception light intensity is 1mw, can must receive light intensity with launching the ratio size 0.1 of light intensity.
Step 403：Judge to exceed default confidence level with the presence or absence of confidence level in laser focal modes, phase focal modes
The focal modes of threshold value, if the focal modes that a kind of confidence level be present more than default believability threshold perform step 404；If deposit
The focal modes for exceeding default believability threshold in two kinds of confidence levels perform step 405；If exceed in the absence of confidence level default
Believability threshold focal modes perform step 406.
In embodiments of the present invention, the believability threshold of focal modes is pre-set, is such as 0.75.
Step 404：Choose confidence level and exceed the focal modes of default believability threshold as target focal modes, then
Perform step 407.
Step 405：Depth of field value, phase focal modes when laser focal modes are attempted to focus attempt depth of field during focusing
Value is compared, and chooses the less focal modes of depth of field value as target focal modes, then performs step 407.
Step 406：CAF focal modes are chosen as target focal modes.
Step 407：The depth of field value of target focal modes output based on selection carries out image focusing.
It should be noted that the process focused in the depth of field value that the focal modes based on selection export to destination object
In, if confidence level corresponding to the focal modes (such as phase focusing) currently chosen no longer meets preparatory condition, based on current credible
Degree meets that candidate's focal modes (such as laser focusing) of preparatory condition carry out pattern switching.
Step 408：Terminate this handling process.
Embodiment three
Present embodiments provide a kind of mobile terminal, as shown in figure 5, in the embodiment of the present invention mobile terminal composition bag
Include：Processor 51, memory 52, communication bus 53 and image collecting device 54 (such as camera)；Wherein,
The communication bus 53, for realizing the connection communication between processor 51 and memory 52；
The memory 52, the message handling program for the focusing method of memory mobile terminal；
The processor 51, the information processing journey of the focusing method for performing the mobile terminal stored in memory 52
Sequence, to realize following steps：
Obtain at least two candidate's focal modes when the mobile terminal carries out IMAQ；
It is based respectively on every kind of candidate's focal modes and trial focusing is carried out to destination object, obtains each candidate's focal modes and attempt
Depth of field value during focusing；
Determine the confidence level that depth of field value when every kind of candidate's focal modes attempt focusing is the actual depth of field；
Choose the focal modes that identified confidence level in candidate's focal modes meets preparatory condition；
The depth of field value of focal modes output based on selection is focused to the destination object.
In one embodiment, the processor 51, it is additionally operable to realize when performing described information processing routine：
It is the first focal modes in response to candidate's focal modes, acquisition is attempted based on first focal modes
The first image corresponding to left pixel and the second image corresponding to right pixel during focusing；
Feature extraction is carried out to described first image and second image respectively；
Characteristic matching is carried out to described first image and second image based on the feature extracted, obtains described first
The images match degree of image and second image, attempted obtained images match degree as first focal modes
Depth of field value during focusing is the confidence level of the actual depth of field.
In one embodiment, the processor 51, it is additionally operable to realize when performing described information processing routine：
It is the second focal modes in response to candidate's focal modes, acquisition is attempted based on second focal modes
During focusing, it is projected to the transmitting light intensity of the light of the destination object and receives light intensity；
The ratio size of the reception light intensity and the transmitting light intensity is determined, using the ratio size of determination as described in
Depth of field value when second focal modes attempt focusing is the confidence level of the actual depth of field.
In one embodiment, the processor 51, it is additionally operable to realize when performing described information processing routine：
Include the first focal modes and the second focal modes in response at least two candidates focal modes, described first
Confidence level corresponding to focal modes and second focal modes is satisfied by preparatory condition, by first focal modes trial pair
Depth of field value when depth of field value when burnt is attempted to focus with second focal modes is compared；
Choose target focal modes of the less focal modes of depth of field value when attempting focusing as the destination object.
In one embodiment, the processor 51, it is additionally operable to realize when performing described information processing routine：
Include the first focal modes and the second focal modes in response at least two candidates focal modes, described first
Confidence level corresponding to focal modes and second focal modes is unsatisfactory for preparatory condition, and the mobile terminal has contrast
Degree focusing CAF patterns, choose target focal modes of the CAF patterns as the destination object.
In one embodiment, the processor 51, it is additionally operable to realize when performing described information processing routine：
During the depth of field value exported in response to the focal modes based on selection is focused to the destination object, institute
State confidence level corresponding to the focal modes of selection and no longer meet preparatory condition, the candidate of preparatory condition is met based on current credibility
Focal modes carry out pattern switching.
It need to be noted that be：Above is referred to the description of mobile terminal, is similar, same method with above method description
Beneficial effect description, do not repeat.For the ins and outs not disclosed in mobile terminal embodiment of the present invention, this hair refer to
The description of bright embodiment of the method.
In the embodiment of the present invention, the function that the processor 31 in the mobile terminal performs can be by the central processing in terminal
Device (CPU, Central Processing Unit) or digital signal processor (DSP, Digital Signal
) or field programmable gate array (FPGA, Field Programmable Gate Array) or integrated circuit Processor
(ASIC, Application Specific Integrated Circuit) is realized.
To realize the information processing embodiment of the above-mentioned body-sensing application of the present invention, the embodiment of the present invention also provides a kind of computer
Readable storage medium storing program for executing, the computer-readable recording medium storage have one or more program, one or more of journeys
Sequence can be by one or more computing device, to realize following steps：
Obtain at least two candidate's focal modes when the mobile terminal carries out IMAQ；
It is based respectively on every kind of candidate's focal modes and trial focusing is carried out to destination object, obtains each candidate's focal modes and attempt
Depth of field value during focusing；
Determine the confidence level that depth of field value when every kind of candidate's focal modes attempt focusing is the actual depth of field；
Choose the focal modes that identified confidence level in candidate's focal modes meets preparatory condition；
The depth of field value of focal modes output based on selection is focused to the destination object.
In one embodiment, one or more of programs can specifically be held by one or more of processors
OK, to realize following steps：
It is the first focal modes in response to candidate's focal modes, acquisition is attempted based on first focal modes
The first image corresponding to left pixel and the second image corresponding to right pixel during focusing；
Feature extraction is carried out to described first image and second image respectively；
Characteristic matching is carried out to described first image and second image based on the feature extracted, obtains described first
The images match degree of image and second image, attempted obtained images match degree as first focal modes
Depth of field value during focusing is the confidence level of the actual depth of field.
In one embodiment, one or more of programs can specifically be held by one or more of processors
OK, to realize following steps：
It is the second focal modes in response to candidate's focal modes, acquisition is attempted based on second focal modes
During focusing, it is projected to the transmitting light intensity of the light of the destination object and receives light intensity；
The ratio size of the reception light intensity and the transmitting light intensity is determined, using the ratio size of determination as described in
Depth of field value when second focal modes attempt focusing is the confidence level of the actual depth of field.
In one embodiment, one or more of programs can specifically be held by one or more of processors
OK, to realize following steps：
Include the first focal modes and the second focal modes in response at least two candidates focal modes, described first
Confidence level corresponding to focal modes and second focal modes is satisfied by preparatory condition, by first focal modes trial pair
Depth of field value when depth of field value when burnt is attempted to focus with second focal modes is compared；
Choose target focal modes of the less focal modes of depth of field value when attempting focusing as the destination object.
In one embodiment, one or more of programs can specifically be held by one or more of processors
OK, to realize following steps：
Include the first focal modes and the second focal modes in response at least two candidates focal modes, described first
Confidence level corresponding to focal modes and second focal modes is unsatisfactory for preparatory condition, and the mobile terminal has contrast
Degree focusing CAF patterns, choose target focal modes of the CAF patterns as the destination object.
In one embodiment, one or more of programs can specifically be held by one or more of processors
OK, to realize following steps：
During the depth of field value exported in response to the focal modes based on selection is focused to the destination object, institute
State confidence level corresponding to the focal modes of selection and no longer meet preparatory condition, the candidate of preparatory condition is met based on current credibility
Focal modes carry out pattern switching.
In several embodiments provided herein, it should be understood that disclosed apparatus and method, it can be passed through
Its mode is realized.Apparatus embodiments described above are only schematical, for example, the division of the unit, is only
A kind of division of logic function, there can be other dividing mode when actually realizing, such as：Multiple units or component can combine, or
Another system is desirably integrated into, or some features can be ignored, or do not perform.In addition, shown or discussed each composition portion
Point mutual coupling or direct-coupling or communication connection can be the INDIRECT COUPLINGs by some interfaces, equipment or unit
Or communication connection, can be electrical, mechanical or other forms.
The above-mentioned unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can positioned at a place, can also be distributed to multiple network lists
In member；Partly or entirely unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a processing unit, also may be used
To be each unit individually as a unit, can also two or more units it is integrated in a unit；It is above-mentioned
Integrated unit can both be realized in the form of hardware, can also be realized in the form of hardware adds SFU software functional unit.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in a computer read/write memory medium, the program
Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：It is movable storage device, read-only
Memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Or if the above-mentioned integrated unit of the present invention is realized in the form of software function module and is used as independent product
Sale in use, can also be stored in a computer read/write memory medium.Based on such understanding, the present invention is implemented
The part that the technical scheme of example substantially contributes to prior art in other words can be embodied in the form of software product,
The computer software product is stored in a storage medium, including some instructions are causing a computer equipment (can be with
It is personal computer, server or network equipment etc.) perform all or part of each embodiment methods described of the present invention.
And foregoing storage medium includes：Movable storage device, ROM, RAM, magnetic disc or CD etc. are various can be with store program codes
Medium.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of focusing method of mobile terminal, it is characterised in that methods described includes：
Obtain at least two candidate's focal modes when the mobile terminal carries out IMAQ；
It is based respectively on every kind of candidate's focal modes and trial focusing is carried out to destination object, obtains each candidate's focal modes and attempt focusing
When depth of field value；
Determine the confidence level that depth of field value when every kind of candidate's focal modes attempt focusing is the actual depth of field；
Choose the focal modes that identified confidence level in candidate's focal modes meets preparatory condition；
The depth of field value of focal modes output based on selection is focused to the destination object.
2. the method as described in claim 1, it is characterised in that the scape determined when every kind of candidate's focal modes attempt focusing
Deep value is the confidence level of the actual depth of field, including：
It is the first focal modes in response to candidate's focal modes, obtains and carry out trial focusing based on first focal modes
When the first image corresponding to left pixel and the second image corresponding to right pixel；
Feature extraction is carried out to described first image and second image respectively；
Characteristic matching is carried out to described first image and second image based on the feature extracted, obtains described first image
And the images match degree of second image, attempt to focus using obtained images match degree as first focal modes
When depth of field value be the actual depth of field confidence level.
3. the method as described in claim 1, it is characterised in that the scape determined when every kind of candidate's focal modes attempt focusing
Deep value is the confidence level of the actual depth of field, including：
It is the second focal modes in response to candidate's focal modes, obtains and carry out trial focusing based on second focal modes
When, it is projected to the transmitting light intensity of the light of the destination object and receives light intensity；
The ratio size of the reception light intensity and the transmitting light intensity is determined, using the ratio size of determination as described second
Depth of field value when focal modes attempt focusing is the confidence level of the actual depth of field.
4. the method as described in claim 1, it is characterised in that identified credible in selection candidate's focal modes
Degree meets the focal modes of preparatory condition, including：
Include the first focal modes and the second focal modes, first focusing in response at least two candidates focal modes
Confidence level corresponding to pattern and second focal modes is satisfied by preparatory condition, when first focal modes are attempted to focus
Depth of field value when attempting to focus of depth of field value and second focal modes be compared；
Choose target focal modes of the less focal modes of depth of field value when attempting focusing as the destination object.
5. the method as described in claim 1, it is characterised in that identified credible in selection candidate's focal modes
Degree meets the focal modes of preparatory condition, including：
Include the first focal modes and the second focal modes, first focusing in response at least two candidates focal modes
Confidence level corresponding to pattern and second focal modes is unsatisfactory for preparatory condition, and the mobile terminal has contrast pair
Burnt CAF patterns, choose target focal modes of the CAF patterns as the destination object.
6. the method as described in claim 1, it is characterised in that methods described also includes：
During the depth of field value exported in response to the focal modes based on selection is focused to the destination object, the choosing
Confidence level corresponding to the focal modes taken no longer meets preparatory condition, and candidate's focusing of preparatory condition is met based on current credibility
Pattern carries out pattern switching.
7. a kind of mobile terminal, it is characterised in that the mobile terminal includes：
The memory, the processing routine for the focusing method of memory mobile terminal；
The processor, the processing routine of the focusing method for performing the mobile terminal stored in the memory, to realize
Following steps：
Obtain at least two candidate's focal modes when the mobile terminal carries out IMAQ；
It is based respectively on every kind of candidate's focal modes and trial focusing is carried out to destination object, obtains each candidate's focal modes and attempt focusing
When depth of field value；
Determine the confidence level that depth of field value when every kind of candidate's focal modes attempt focusing is the actual depth of field；
Choose the focal modes that identified confidence level in candidate's focal modes meets preparatory condition；
The depth of field value of focal modes output based on selection is focused to the destination object.
8. mobile terminal as claimed in claim 7, it is characterised in that
The processor, it is the first focal modes to be additionally operable in response to candidate's focal modes, obtains and is based on described first pair
Burnt pattern attempt the first image corresponding to left pixel and the second image corresponding to right pixel during focusing；
Feature extraction is carried out to described first image and second image respectively；
Characteristic matching is carried out to described first image and second image based on the feature extracted, obtains described first image
And the images match degree of second image, attempt to focus using obtained images match degree as first focal modes
When depth of field value be the actual depth of field confidence level.
9. mobile terminal as claimed in claim 7, it is characterised in that
The processor, it is the second focal modes to be additionally operable in response to candidate's focal modes, obtains and is based on described second pair
When burnt pattern attempt focusing, it is projected to the transmitting light intensity of the light of the destination object and receives light intensity；
The ratio size of the reception light intensity and the transmitting light intensity is determined, using the ratio size of determination as described second
Depth of field value when focal modes attempt focusing is the confidence level of the actual depth of field.
A kind of 10. storage medium, it is characterised in that executable program is stored with, when the executable program is executed by processor,
Realize the focusing method of the mobile terminal as described in any one of claim 1 to 6.
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