CN107480500A - The method and mobile terminal of a kind of face verification - Google Patents
The method and mobile terminal of a kind of face verification Download PDFInfo
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- CN107480500A CN107480500A CN201710684616.9A CN201710684616A CN107480500A CN 107480500 A CN107480500 A CN 107480500A CN 201710684616 A CN201710684616 A CN 201710684616A CN 107480500 A CN107480500 A CN 107480500A
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- Prior art keywords
- facial
- face
- features
- facial image
- target
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/168—Feature extraction; Face representation
Abstract
The invention provides a kind of method of face verification and mobile terminal, solves the problems, such as checking can not be identified to the feature of 3D faces by the single camera of mobile terminal at present.The method of the face verification of the present invention includes：Control the camera to be shot according to different shooting focal lengths to target face, obtain an at least facial image；According to an at least facial image, the facial 3D features of the target face and facial 2D features are determined；According to the facial 3D features of the target face and facial 2D features, the face verification of the target face is carried out.Whether the present invention can be 3D faces according to facial 3D signature verifications target face, and the feature of target face is verified by facial 2D features, so as to which the single camera reached by mobile terminal just can identify the purpose of checking 3D faces.
Description
Technical field
The present invention relates to the method and mobile terminal of communication technical field, more particularly to a kind of face verification.
Background technology
Mobile terminal, according to existing face detection algorithms, passes through the list of mobile terminal when being verified to face at present
Individual camera can only be verified to the feature of 2D faces, checking 3D faces can not be identified, and then cause to face
Security breaches during checking be present, it is therefore desirable to which a kind of new face verification method can be right by the single camera of mobile terminal
3D faces are verified.
The content of the invention
The embodiment of the present invention provides a kind of method and mobile terminal of face verification, to solve to pass through mobile terminal at present
The problem of checking can not be identified to the feature of 3D faces in single camera.
In a first aspect, the embodiments of the invention provide a kind of method of face verification, applied to the movement including camera
Terminal, including：
Control the camera to be shot according to different shooting focal lengths to target face, obtain an at least face figure
Picture；
According to an at least facial image, the facial 3D features of the target face and facial 2D features are determined；
According to the facial 3D features of the target face and facial 2D features, the face verification of the target face is carried out.
Second aspect, the embodiment of the present invention additionally provide a kind of mobile terminal, including：
Control module, for controlling camera to be shot according to different shooting focal lengths to target face, obtain at least
One facial image；
Determining module, for according to an at least facial image, determine the facial 3D features of the target face with
Facial 2D features；
Authentication module, for the facial 3D features according to the target face and facial 2D features, carry out the target person
The face verification of face.
The third aspect, the embodiment of the present invention also provide a kind of mobile terminal, including：Memory, processor and it is stored in
On reservoir and the computer program that can run on a processor, the computer program are realized as above during the computing device
The step of method of the face verification.
Fourth aspect, the embodiment of the present invention also provide a kind of computer-readable recording medium, the computer-readable storage
Computer program, the computer program realizes face verification as described above method when being executed by processor are stored with medium
The step of.
So, the above-mentioned technical proposal of the embodiment of the present invention, control the camera according to different shooting focal lengths to mesh
Mark face is shot, and obtains an at least facial image；According to an at least facial image, the target face is determined
Facial 3D features and facial 2D features；According to the facial 3D features of the target face and facial 2D features, the mesh is carried out
Mark the face verification of face.Whether the embodiment of the present invention can be 3D faces according to facial 3D signature verifications target face, and pass through
Facial 2D features are verified to the feature of target face, are tested so as to which the single camera reached by mobile terminal just can identify
Demonstrate,prove the purpose of 3D faces.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed for being described below to the embodiment of the present invention
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention,
For those of ordinary skill in the art, without having to pay creative labor, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is one of flow chart of method of face verification of the embodiment of the present invention；
Fig. 2 is the two of the flow chart of the method for the face verification of the embodiment of the present invention；
Fig. 3 is one of module diagram of mobile terminal of the embodiment of the present invention；
Fig. 4 is the two of the module diagram of the mobile terminal of the embodiment of the present invention；
Fig. 5 is one of structured flowchart of mobile terminal of the embodiment of the present invention；
Fig. 6 is the two of the structured flowchart of the mobile terminal of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Described into ground, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
As shown in figure 1, the embodiments of the invention provide a kind of method of face verification, applied to the movement including camera
Terminal, this method include：
Step 101：Control the camera to be shot according to different shooting focal lengths to target face, obtain at least one
Open facial image.
Above-mentioned camera can be specially the front camera of mobile terminal, and the camera has automatic focusing function, preferably
, the front camera has larger aperture.
The face verification method of the embodiment of the present invention can be applied particularly to the unlocking screen of mobile terminal.Now, above-mentioned step
Rapid 101 specifically include：When receiving screen-unlock instruction, the camera of mobile terminal is controlled according to different shooting focal lengths pair
Target face is shot, and obtains multiple facial images.Wherein, the corresponding shooting focal length of every facial image, and multiple people
Shooting focal length differs corresponding to face image.
Step 102：According to an at least facial image, the facial 3D features of the target face and facial 2D are determined
Feature.
By obtaining the facial 3D features of target face, to identify whether target face is 3D faces, and pass through facial 2D
Feature is verified to target face, so as to reach the purpose of identification checking 3D faces.
Step 103：According to the facial 3D features of the target face and facial 2D features, the people for carrying out the target face
Face is verified.
Here, according to the facial 3D features of above-mentioned target face and facial 2D features, to realize that the identification to 3D faces is tested
Card, so as to reach the purpose for 3D faces being identified by the single camera of mobile terminal checking.
Further, an at least facial image described in basis in above-mentioned steps 102, the face of the target face is determined
The step of 2D features, including：
A facial image is chosen in an at least facial image as target facial image；Extract the target
Facial 2D features in facial image.
Specifically, according to default optimum image selection algorithm, one face figure of middle selection in an at least facial image
As being used as the target facial image, and the facial 2D features in target facial image are extracted, in order to subsequently to the facial 2D
Feature is verified.
Here default optimum image selection algorithm by the definition between multiple facial images, uniform illumination degree,
Contrast, saturation degree, brightness, details enrich degree, whether overexposure or it is excessively dark, whether have color lump, whether colour cast, whether be subcooled with
And whether at least one index in excessively warm etc. index is compared, and obtains above-mentioned target facial image.
As one kind optionally realize it is above-mentioned, in an at least facial image choose a facial image as mesh
The step of marking facial image, including：
In an at least facial image, the facial image conduct that focus point is located at face central area is chosen
The target facial image.
The face central area can be set according to the actual demand of user, be not especially limited herein.
Further, an at least facial image described in basis in above-mentioned steps 102, the face of the target face is determined
The step of 3D features, including：
Obtain the focusing FV values at least two default face positions in every facial image；
Wherein, the facial 3D is characterized as the focusing FV values.
For example, the FV values of nose and ear in every facial image can be obtained.Due to the 3D faces with different depth, no
Same position (such as nose, ear) has different FV values.When the focusing position of camera lens is moved to ear from nose, nose FV values from
Diminish greatly, and ear FV values become big from small., whereas if be 2D faces, nose and ear location FV values can become big or one together
Rise and diminish.
Here, the focusing FV values at least two default face positions in every facial image are obtained, in order to follow-up
By the FV values of acquisition, determine whether target face is 3D faces.
Now, above-mentioned steps 103 include：
According to the facial 3D features of the target face and facial 2D features, verify whether the target face meets to preset
Condition；If the FV values at least two default face positions do not increase simultaneously with the change of shooting focal length in every facial image
Big or reduction, and the facial 2D features match with default face characteristic, it is determined that the target face meets preparatory condition.
Wherein, the preparatory condition includes：The focusing FV at least two default face positions in every facial image
Whether value increases or reduces simultaneously with the change of shooting focal length, and the facial 2D features and default face characteristic whether
Match somebody with somebody.
Here, it is specially to pre-save face characteristic in the terminal to preset face characteristic.In the embodiment of the present invention
It can detect whether facial 2D features match with default face characteristic using existing face detection algorithms.
In the embodiment of the present invention, in every facial image the focusing FV values at least two default face positions with
The change of shooting focal length increases or reduced simultaneously, shows that the target face be 3D faces, and facial 2D features and default face
Characteristic matching, it is determined that the target face is proved to be successful, so as to which the single camera reached by mobile terminal just can identify
The purpose of 3D faces is verified, reduces the cost of mobile terminal.
Further, the method for the face verification of the embodiment of the present invention can be applied to unlocking screen, now, as shown in Fig. 2
The method of the face verification of the embodiment of the present invention also includes：
Step 104：If the target face meets preparatory condition, the screen of the mobile terminal is unlocked.
Specifically, if above-mentioned facial 3D mark sheets improving eyesight mark face is the 3D faces face of depth (have), and facial 2D
Feature is matched with default face characteristic, it is determined that target face is proved to be successful, and the screen of mobile terminal is unlocked.
In the embodiment of the present invention, 3D faces are identified checking, and the screen of mobile terminal is entered after being proved to be successful
Row unblock, the security of mobile terminal is improved, can more effectively protect the privacy information of user.
The method of the face verification of the embodiment of the present invention, control the camera according to different shooting focal lengths to target person
Face is shot, and obtains an at least facial image；According to an at least facial image, the face of the target face is determined
Portion's 3D features and facial 2D features；According to the facial 3D features of the target face and facial 2D features, the target person is carried out
The face verification of face.Whether the embodiment of the present invention can be 3D faces according to facial 3D signature verifications target face, and pass through face
2D features are verified to the feature of target face, so as to which the single camera reached by mobile terminal just can identify checking 3D
The purpose of face.
As shown in figure 3, embodiments of the invention additionally provide a kind of mobile terminal 300, including：
Control module 301, for controlling camera to be shot according to different shooting focal lengths to target face, obtain to
A few facial image；
Determining module 302, for an at least facial image according to, determine the facial 3D features of the target face
With facial 2D features；
Authentication module 303, for the facial 3D features according to the target face and facial 2D features, carry out the target
The face verification of face.
The mobile terminal of the embodiment of the present invention, the determining module 302 include：
Submodule 3021 is chosen, for choosing a facial image in an at least facial image as target person
Face image；
Extracting sub-module 3022, for extracting the facial 2D features in the target facial image.
The mobile terminal of the embodiment of the present invention, the selection submodule 3021 are used in an at least facial image
In, choose focus point and be located at a facial image of face central area as the target facial image.
The mobile terminal of the embodiment of the present invention, the determining module 302 are used to obtain in every facial image at least
The focusing FV values at two default face positions；
Wherein, the facial 3D is characterized as the focusing FV values.
The mobile terminal of the embodiment of the present invention, the authentication module 303 include：
Submodule 3031 is verified, for the facial 3D features according to the target face and facial 2D features, described in checking
Whether target face meets preparatory condition；
Determination sub-module 3032, if FV values in facial image every described at least two default face positions not with
The change of shooting focal length while increase or reduce, and the facial 2D features match with default face characteristic, it is determined that be described
Target face meets preparatory condition；
Wherein, the preparatory condition includes：The focusing FV at least two default face positions in every facial image
Whether value increases or reduces simultaneously with the change of shooting focal length, and the facial 2D features and default face characteristic whether
Match somebody with somebody.
The mobile terminal of the embodiment of the present invention, in addition to：
Unlocked state 304, for being unlocked to the screen of the mobile terminal.
It should be noted that the mobile terminal is mobile terminal corresponding with above method embodiment, the above method is implemented
All implementations can also reach identical technique effect suitable for the embodiment of the mobile terminal in example.
The mobile terminal of the embodiment of the present invention, the camera is controlled to be carried out according to different shooting focal lengths to target face
Shooting, obtains an at least facial image；According to an at least facial image, determine that the facial 3D of the target face is special
Seek peace facial 2D features；According to the facial 3D features of the target face and facial 2D features, the people for carrying out the target face
Face is verified.Whether the embodiment of the present invention can be 3D faces according to facial 3D signature verifications target face, and pass through facial 2D features
The feature of target face is verified, so as to which the single camera reached by mobile terminal just can identify checking 3D faces
Purpose.
Embodiments of the invention additionally provide a kind of mobile terminal, including：Memory, processor and storage are on a memory
And the computer program that can be run on a processor, realize that above-mentioned face is tested when the computer program is by the computing device
Each process in the embodiment of the method for card, and identical technique effect can be reached, to avoid repeating, repeat no more here.
Embodiments of the invention additionally provide a kind of computer-readable recording medium, on the computer-readable recording medium
Computer program is stored with, the computer program is realized when being executed by processor in the embodiment of the method for above-mentioned face verification
Each process, and identical technique effect can be reached, to avoid repeating, repeat no more here.Wherein, it is described computer-readable
Storage medium, such as read-only storage (Read-Only Memory, abbreviation ROM), random access memory (Random Access
Memory, abbreviation RAM), magnetic disc or CD etc..
As shown in figure 5, embodiments of the invention additionally provide a kind of mobile terminal, the mobile terminal 500 shown in Fig. 5 wraps
Include：At least one processor 501, memory 502, at least one network interface 504, the sensor 506 of camera and other users
Interface 503.Wherein, processor 501 includes image control center 5011 and image processor 5012.It is each in mobile terminal 500
Individual component is coupled by bus system 505.It is understood that bus system 505 is used to realize the connection between these components
Communication.Bus system 505 is in addition to including data/address bus, in addition to power bus, controlling bus and status signal bus in addition.But
For the sake of clear explanation, various buses are all designated as bus system 505 in Figure 5.
Wherein, user interface 503 can include display, keyboard or pointing device (for example, mouse, trace ball
(trackball), touch-sensitive plate or touch-screen etc..
It is appreciated that the memory 502 in the embodiment of the present invention can be volatile memory or nonvolatile memory,
Or it may include both volatibility and nonvolatile memory.Wherein, nonvolatile memory can be read-only storage (Read-
Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), the read-only storage of erasable programmable
Device (Erasable PROM, EPROM), Electrically Erasable Read Only Memory (Electrically EPROM, EEPROM) or
Flash memory.Volatile memory can be random access memory (Random Access Memory, RAM), and it is used as outside high
Speed caching.By exemplary but be not restricted explanation, the RAM of many forms can use, such as static RAM
(Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory
(Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data Rate
SDRAM, DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronized links
Dynamic random access memory (Synchlink DRAM, SLDRAM) and direct rambus random access memory (Direct
Rambus RAM, DRRAM).The memory 502 of system and method described herein be intended to including but not limited to these and it is any its
It is adapted to the memory of type.
In some embodiments, memory 502 stores following element, can perform module or data structure, or
Their subset of person, or their superset：Operating system 5021 and application program 5022.
Wherein, operating system 5021, comprising various system programs, such as ccf layer, core library layer, driving layer etc., it is used for
Realize various basic businesses and the hardware based task of processing.Application program 5022, include various application programs, such as media
Player (Media Player), browser (Browser) etc., for realizing various applied business.Realize the embodiment of the present invention
The program of method may be embodied in application program 5022.
In one embodiment of this invention, by call memory 502 store program or instruction, can be specifically
The program stored in application program 5022 or instruction, computer program realize following steps when being performed by processor 501：
Control the camera to be shot according to different shooting focal lengths to target face, obtain an at least face figure
Picture；
According to an at least facial image, the facial 3D features of the target face and facial 2D features are determined；
According to the facial 3D features of the target face and facial 2D features, the face verification of the target face is carried out.
Optionally, following steps are realized when computer program is performed by processor 501：
A facial image is chosen in an at least facial image as target facial image；
Extract the facial 2D features in the target facial image.
Optionally, following steps are realized when computer program is performed by processor 501：
In an at least facial image, the facial image conduct that focus point is located at face central area is chosen
The target facial image.
Optionally, following steps are realized when computer program is performed by processor 501：
Obtain the focusing FV values at least two default face positions in every facial image；
Wherein, the facial 3D is characterized as the focusing FV values.
Optionally, following steps are realized when computer program is performed by processor 501：
According to the facial 3D features of the target face and facial 2D features, verify whether the target face meets to preset
Condition；
If the FV values at least two default face positions are not same with the change of shooting focal length in every facial image
Shi Zeng great or reduction, and the facial 2D features match with default face characteristic, it is determined that the target face meets default bar
Part；
Wherein, the preparatory condition includes：The focusing FV at least two default face positions in every facial image
Whether value increases or reduces simultaneously with the change of shooting focal length, and the facial 2D features and default face characteristic whether
Match somebody with somebody.
Optionally, following steps are realized when computer program is performed by processor 501：
The screen of the mobile terminal is unlocked.
The mobile terminal 500 of the embodiment of the present invention, processor 501 are used to control the camera burnt according to different shootings
Away from being shot to target face, an at least facial image is obtained；According to an at least facial image, the mesh is determined
Mark the facial 3D features of face and facial 2D features；According to the facial 3D features of the target face and facial 2D features, carry out
The face verification of the target face.Whether the embodiment of the present invention can be 3D faces according to facial 3D signature verifications target face,
And the feature of target face is verified by facial 2D features, so as to which the single camera reached by mobile terminal just can
The purpose of identification checking 3D faces.
The mobile terminal of the present invention such as can be mobile phone, tablet personal computer, personal digital assistant (Personal Digital
Assistant, PDA) or vehicle-mounted computer etc. terminal.
Mobile terminal 500 can realize each process that terminal is realized in previous embodiment, to avoid repeating, here no longer
Repeat.
The method that the embodiments of the present invention disclose can apply in processor 501, or real by processor 501
It is existing.Processor 501 is probably a kind of IC chip, has the disposal ability of signal.In implementation process, the above method
Each step can be completed by the integrated logic circuit of the hardware in processor 501 or the instruction of software form.Above-mentioned place
Reason device 501 can be general processor, digital signal processor (Digital Signal Processor, DSP), special integrated
Circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field
Programmable Gate Array, FPGA) either other PLDs, discrete gate or transistor logic,
Discrete hardware components.It can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general
Processor can be microprocessor or the processor can also be any conventional processor etc..With reference to institute of the embodiment of the present invention
The step of disclosed method, can be embodied directly in hardware decoding processor and perform completion, or with the hardware in decoding processor
And software module combination performs completion.Software module can be located at random access memory, flash memory, read-only storage, may be programmed read-only
In the ripe storage medium in this area such as memory or electrically erasable programmable memory, register.The storage medium is located at
Memory 502, processor 501 read the information in memory 502, with reference to the step of its hardware completion above method.
It is understood that embodiments described herein can use hardware, software, firmware, middleware, microcode or its
Combine to realize.Realized for hardware, processing unit can be realized in one or more application specific integrated circuit (Application
Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing,
DSP), digital signal processing appts (DSP Device, DSPD), programmable logic device (Programmable Logic
Device, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), general processor,
In controller, microcontroller, microprocessor, other electronic units for performing herein described function or its combination.
Realize, can be realized herein by performing the module (such as process, function etc.) of function described herein for software
Described technology.Software code is storable in memory and passes through computing device.Memory can within a processor or
Realized outside processor.
As shown in fig. 6, the embodiment of the present invention additionally provides a kind of mobile terminal.Mobile terminal 600 shown in Fig. 6 includes penetrating
Frequently (Radio Frequency, RF) circuit 610, memory 620, input block 630, display unit 640, the sensor of camera
650th, processor 660, voicefrequency circuit 670, WiFi (Wireless Fidelity) modules 680 and power supply 690.Processor 660 wraps
Include image control center and image processor.
Wherein, input block 630 can be used for the numeral or character information for receiving user's input, and generation and mobile terminal
The signal input that 600 user is set and function control is relevant.Specifically, in the embodiment of the present invention, the input block 630 can
With including contact panel 631.Contact panel 631, also referred to as touch-screen, collect touch operation of the user on or near it
(for example user uses the operations of any suitable object or annex on contact panel 631 such as finger, stylus), and according to advance
The formula of setting drives corresponding attachment means.Optionally, contact panel 631 may include touch detecting apparatus and touch controller
Two parts.Wherein, the touch orientation of touch detecting apparatus detection user, and the signal that touch operation is brought is detected, by signal
Send touch controller to；Touch controller receives touch information from touch detecting apparatus, and is converted into contact coordinate,
Give the processor 660 again, and the order sent of reception processing device 660 and can be performed.Furthermore, it is possible to using resistance-type,
The polytypes such as condenser type, infrared ray and surface acoustic wave realize contact panel 631.Except contact panel 631, input block
630 can also include other input equipments 632, and other input equipments 632 can include but is not limited to physical keyboard, function key
One or more in (such as volume control button, switch key etc.), trace ball, mouse, action bars etc..
Wherein, display unit 640 can be used for display by the information of user's input or be supplied to information and the movement of user
The various menu interfaces of terminal 600.Display unit 640 may include display panel 641, optionally, can use LCD or organic hairs
The forms such as optical diode (Organic Light-Emitting Diode, OLED) configure display panel 641.
It should be noted that contact panel 631 can cover display panel 641, touch display screen is formed, when the touch display screen is examined
After measuring the touch operation on or near it, processor 660 is sent to determine the type of touch event, is followed by subsequent processing device
660 provide corresponding visual output according to the type of touch event in touch display screen.
Touch display screen includes Application Program Interface viewing area and conventional control viewing area.The Application Program Interface viewing area
And arrangement mode of the conventional control viewing area does not limit, can be arranged above and below, left-right situs etc. can distinguish two it is aobvious
Show the arrangement mode in area.The Application Program Interface viewing area is displayed for the interface of application program.Each interface can be with
The interface element such as the icon comprising at least one application program and/or widget desktop controls.The Application Program Interface viewing area
It can also be the empty interface not comprising any content.The conventional control viewing area is used to show the higher control of utilization rate, for example,
Application icons such as settings button, interface numbering, scroll bar, phone directory icon etc..
Wherein processor 660 is the control centre of mobile terminal 600, utilizes various interfaces and connection whole mobile phone
Various pieces, by running or performing the software program and/or module that are stored in first memory 621, and call storage
Data in second memory 622, the various functions and processing data of mobile terminal 600 are performed, so as to mobile terminal 600
Carry out integral monitoring.Optionally, processor 660 may include one or more processing units.
In one embodiment of this invention, by calling the software program and/or module that store in the first memory 621
And/or the data in the second memory 622, computer program realize following steps when being performed by processor 660：
Control the camera to be shot according to different shooting focal lengths to target face, obtain an at least face figure
Picture；
According to an at least facial image, the facial 3D features of the target face and facial 2D features are determined；
According to the facial 3D features of the target face and facial 2D features, the face verification of the target face is carried out.
Optionally, following steps are realized when computer program is performed by processor 660：
A facial image is chosen in an at least facial image as target facial image；
Extract the facial 2D features in the target facial image.
Optionally, following steps are realized when computer program is performed by processor 660：
In an at least facial image, the facial image conduct that focus point is located at face central area is chosen
The target facial image.
Optionally, following steps are realized when computer program is performed by processor 660：
Obtain the focusing FV values at least two default face positions in every facial image；
Wherein, the facial 3D is characterized as the focusing FV values.
Optionally, following steps are realized when computer program is performed by processor 660：
According to the facial 3D features of the target face and facial 2D features, verify whether the target face meets to preset
Condition；
If the FV values at least two default face positions are not same with the change of shooting focal length in every facial image
Shi Zeng great or reduction, and the facial 2D features match with default face characteristic, it is determined that the target face meets default bar
Part；
Wherein, the preparatory condition includes：The focusing FV at least two default face positions in every facial image
Whether value increases or reduces simultaneously with the change of shooting focal length, and the facial 2D features and default face characteristic whether
Match somebody with somebody.
Optionally, following steps are realized when computer program is performed by processor 660：
The screen of the mobile terminal is unlocked.
The mobile terminal of the present invention such as can be mobile phone, tablet personal computer, personal digital assistant (Personal Digital
Assistant, PDA) or vehicle-mounted computer etc. terminal.
Mobile terminal 600 can realize each process that terminal is realized in previous embodiment, to avoid repeating, here no longer
Repeat.
The mobile terminal 600 of the embodiment of the present invention, processor 660 are used to control the camera burnt according to different shootings
Away from being shot to target face, an at least facial image is obtained；According to an at least facial image, the mesh is determined
Mark the facial 3D features of face and facial 2D features；According to the facial 3D features of the target face and facial 2D features, carry out
The face verification of the target face.Whether the embodiment of the present invention can be 3D faces according to facial 3D signature verifications target face,
And the feature of target face is verified by facial 2D features, so as to which the single camera reached by mobile terminal just can
The purpose of identification checking 3D faces.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In embodiment provided herein, it should be understood that disclosed apparatus and method, others can be passed through
Mode is realized.For example, device embodiment described above is only schematical, for example, the division of the unit, is only
A kind of division of logic function, can there is an other dividing mode when actually realizing, for example, multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, device or unit
Connect, can be electrical, mechanical or other forms.
The 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 with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the present invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, ROM, RAM, magnetic disc or CD etc. are various can be with store program codes
Medium.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
The hardware of correlation is controlled to complete by computer program, described program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (14)
- A kind of 1. method of face verification, applied to the mobile terminal including camera, it is characterised in that including：Control the camera to be shot according to different shooting focal lengths to target face, obtain an at least facial image；According to an at least facial image, the facial 3D features of the target face and facial 2D features are determined；According to the facial 3D features of the target face and facial 2D features, the face verification of the target face is carried out.
- 2. the method for face verification according to claim 1, it is characterised in that according to an at least facial image, The step of determining the facial 2D features of the target face, including：A facial image is chosen in an at least facial image as target facial image；Extract the facial 2D features in the target facial image.
- 3. the method for face verification according to claim 2, it is characterised in that described in an at least facial image The step of one facial image of middle selection is as target facial image, including：In an at least facial image, choose focus point and be located at described in the facial image conduct of face central area Target facial image.
- 4. the method for face verification according to claim 1, it is characterised in that according to an at least facial image, The step of determining the facial 3D features of the target face, including：Obtain the focusing FV values at least two default face positions in every facial image；Wherein, the facial 3D is characterized as the focusing FV values.
- 5. the method for face verification according to claim 4, it is characterised in that the face according to the target face 3D features and facial 2D features, the step of carrying out the face verification of the target face, including：According to the facial 3D features of the target face and facial 2D features, verify whether the target face meets default bar Part；If the FV values at least two default face positions do not increase simultaneously with the change of shooting focal length in every facial image Big or reduction, and the facial 2D features match with default face characteristic, it is determined that the target face meets preparatory condition；Wherein, the preparatory condition includes：The focusing FV values at least two default face positions are in every facial image It is no to increase or reduce simultaneously with the change of shooting focal length, and whether the facial 2D features match with default face characteristic.
- 6. the method for face verification according to claim 5, it is characterised in that also include：If the target face meets preparatory condition, the screen of the mobile terminal is unlocked.
- A kind of 7. mobile terminal, it is characterised in that including：Control module, for controlling camera to be shot according to different shooting focal lengths to target face, obtain at least one Facial image；Determining module, for an at least facial image according to, determine the facial 3D features and face of the target face 2D features；Authentication module, for the facial 3D features according to the target face and facial 2D features, carry out the target face Face verification.
- 8. mobile terminal according to claim 7, it is characterised in that the determining module includes：Submodule is chosen, for choosing a facial image in an at least facial image as target facial image；Extracting sub-module, for extracting the facial 2D features in the target facial image.
- 9. mobile terminal according to claim 8, it is characterised in that the selection submodule is used at described at least one In facial image, choose focus point and be located at a facial image of face central area as the target facial image.
- 10. mobile terminal according to claim 7, it is characterised in that the determining module is used to obtain every people The focusing FV values at least two default face positions in face image；Wherein, the facial 3D is characterized as the focusing FV values.
- 11. mobile terminal according to claim 10, it is characterised in that the authentication module includes：Submodule is verified, for the facial 3D features according to the target face and facial 2D features, verifies the target face Whether preparatory condition is met；Determination sub-module, if the FV values in facial image every described at least two default face positions are not as shooting is burnt Away from change increase or reduce simultaneously, and the facial 2D features match with default face characteristic, it is determined that the target face Meet preparatory condition；Wherein, the preparatory condition includes：The focusing FV values at least two default face positions are in every facial image It is no to increase or reduce simultaneously with the change of shooting focal length, and whether the facial 2D features match with default face characteristic.
- 12. mobile terminal according to claim 11, it is characterised in that also include：Unlocked state, if meeting preparatory condition for the target face, the screen of the mobile terminal is unlocked.
- A kind of 13. mobile terminal, it is characterised in that including：Memory, processor and storage are on a memory and can be in processor The computer program of upper operation, the computer program are realized such as any one of claim 1 to 6 during the computing device The step of method of the face verification.
- 14. a kind of computer-readable recording medium, it is characterised in that be stored with computer on the computer-readable recording medium Program, the method that the face verification as any one of claim 1 to 6 is realized when the computer program is executed by processor The step of.
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