CN109284591A - Face unlocking method and device - Google Patents
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/60—Type of objects
- G06V20/64—Three-dimensional objects
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- 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
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- 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
- G06V40/172—Classification, e.g. identification
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Abstract
The disclosure is directed to a kind of face unlocking method and device, with the influence of environmental factor when unlocking to avoid face, and then unlock speed is improved.The described method includes: obtaining the echo information of ultrasonic wave by ultrasonic sensor when terminal device is in the lock state；The geological information for the barrier that ultrasonic wave encounters is carried in echo information；Face verification is carried out according to geological information；After face verification passes through, unlock operation is executed.Disclosed technique scheme can be to avoid the influence of environmental factor when face unlock, and then improves unlock speed.
Description
Technical field
This disclosure relates to technical field of face recognition more particularly to a kind of face unlocking method and device.
Background technique
It is universal with smart machine, and the high speed development of science and technology, practical function for smart machine and
Convenience brings bigger challenge and possibility.For example, even more there are various unlocks for smart machine unlocked state
Method, such as the unlock of unlocked by fingerprint, iris are unlocked with face.However, unlocking for infrared face, temperature, light may be subjected to
The influence of the environmental factors such as line.Therefore, how to avoid the influence of environmental factor when unlock is a technical problem for needing to solve.
Summary of the invention
To overcome the problems in correlation technique, the embodiment of the present disclosure provides a kind of face unlocking method and device, uses
To avoid the influence of environmental factor when face unlock, and then improve unlock speed.
According to the first aspect of the embodiments of the present disclosure, a kind of face unlocking method is provided, comprising:
When terminal device is in the lock state, the echo information of ultrasonic wave is obtained by ultrasonic sensor；Described time
The geological information for the barrier that the ultrasonic wave encounters is carried in wave information；
Face verification is carried out according to the geological information；
After face verification passes through, unlock operation is executed.
In one embodiment, the method may also include that
Meet the supersonic sensing in the attitudes vibration information for detecting the terminal device by acceleration transducer
After the unlocking condition of device, the open command of the ultrasonic sensor is generated, the open command is for starting the ultrasonic wave
Working sensor.
It is in one embodiment, described that face verification is carried out according to the geological information, comprising:
The geological information is compared with preset 3D face database；
Geological information is compared with preset face characteristic information, carries out face verification.
In one embodiment, the 3D face database may include 3D faceform, and the 3D faceform may include
Face morphological feature point；The geological information may include the configuration of surface data point of the barrier.
It is in one embodiment, described to be compared the geological information with preset 3D face database, it may include:
Compare the configuration of surface data point and the face morphological feature point；
After determining that the configuration of surface data point includes the face morphological feature point according to comparison result, described in determination
It include face morphological feature in geological information.
In one embodiment, the 3D face database may include the 3D face sample data of the first number；Described
The 3D face sample data of one number respectively includes corresponding face morphological feature point；The geological information may include the obstacle
The configuration of surface data point of object.
It is in one embodiment, described to be compared the geological information with preset 3D face database, it may include:
By the corresponding face form of 3D face sample data of the configuration of surface data point and first number
Characteristic point is compared respectively；
Determining that the configuration of surface data point and the 3D face sample data of the second number have respectively according to comparison result
After the characteristic point of standby same local facial form, determine in the geological information comprising face morphological feature, second number
Less than first number.
In one embodiment, described by the way that the geological information to be compared with preset face characteristic information, into
Row face verification, it may include:
Obtain the first difference between the geological information and preset face characteristic information；
When first difference meets preset condition, determine that face verification passes through.
In one embodiment, the method may also include that
Obtain the first 3D face characteristic information of target face；The first 3D face characteristic information includes in amimia
The target face of state corresponding 3D face characteristic information when relative to the terminal device different angle；
Obtain the 2nd 3D face characteristic information of target face；The 2nd 3D face characteristic information includes target face point
Other places corresponding 3D face characteristic information when at least one presets emotional state；
It is determined according to the second difference between the first 3D face characteristic information and the 2nd 3D face characteristic information
The preset face characteristic information.
In one embodiment, the method may also include that
When determining in the geological information according to the comparison result not comprising face morphological feature, the ultrasound is closed
Wave sensor.
According to the second aspect of an embodiment of the present disclosure, a kind of terminal device, including processor and memory are provided；
The memory, for storing computer program；
The processor realizes above-mentioned method for executing the computer program stored on the memory.
According to the third aspect of an embodiment of the present disclosure, a kind of computer readable storage medium is provided, calculating is stored thereon with
Machine program, the computer program realize above-mentioned method when being executed by processor.
The technical scheme provided by this disclosed embodiment can include the following benefits: be in locking shape in terminal device
When state, the echo information of ultrasonic wave is obtained by ultrasonic sensor, wherein carries what ultrasonic wave encountered in the echo information
Then the geological information of barrier carries out face verification according to geological information, after face verification passes through, execute unlock operation.
Due to detecting the geological information of barrier by ultrasonic sensor, can to avoid the influence of the environmental factors such as temperature, light, because
This, can be to avoid the influence of environmental factor when face unlock, and then improves unlock speed.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is the flow chart of face unlocking method shown according to an exemplary embodiment.
Fig. 2 is the flow chart of the face unlocking method shown according to another exemplary embodiment.
Fig. 3 is the flow chart of the face unlocking method shown according to another exemplary embodiment.
Fig. 4 is a kind of block diagram of face tripper shown according to an exemplary embodiment.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Fig. 1 is the flow chart of face unlocking method shown according to an exemplary embodiment.The face unlocking method can be with
Applied to terminal device, such as smart phone, tablet computer, personal digital assistant etc..As shown in Figure 1, the face unlocking method
It may comprise steps of S101~S103:
In step s101, when terminal device is in the lock state, returning for ultrasonic wave is obtained by ultrasonic sensor
Wave information；The geological information for the barrier that the ultrasonic wave encounters is carried in the echo information.
In one embodiment, ultrasonic sensor is configured in terminal device.The ultrasonic sensor may include two
Part: supersonic generator and ultrasonic receiver.Wherein, supersonic generator for emitting ultrasonic wave, meeting by ultrasonic wave
It can be reflected back when to barrier, ultrasonic receiver is used to receive ultrasonic wave and encounters returning of being reflected back when barrier
Wave.Ultrasonic sensor can according to transmitting ultrasonic wave launch time and receive echo receiving time between time difference with
And the spread speed of ultrasonic wave calculates to obtain the distance between barrier and terminal device information.
In one embodiment, ultrasonic receiver may include the receiving array of multiple ultrasonic receiver compositions, this
The distance between terminal device is arrived in sample, the position that the detection multiple points of blocking surfaces may be implemented in ultrasonic sensor.Work as ultrasound
Ultrasonic receiver in wave receiver it is in a large number when, the geological information on the surface of barrier can be detected.Such as
Include three-dimensional face in fruit barrier, then carries the geological information of three-dimensional face in geological information, it therefore, can based on geological information
To realize three-dimensional face identification, and then face unlocking function may be implemented.
In one embodiment, when terminal device is in the lock state, ultrasound can be obtained by ultrasonic sensor
The echo information of wave.Wherein, the echo information may include the receiving time of echo, also may include echo time and ultrasound
Time difference between the launch time of wave also may include calculating to obtain according to the spread speed of the time difference and ultrasonic wave
Barrier on the distance between multiple points and terminal device.Therefore, the barrier that the ultrasonic wave encounters is carried in echo information
Hinder the geological information of object.
In one embodiment, when terminal device is in the lock state, ultrasonic sensor may be at closed state.
Terminal device can start the ultrasonic sensor work after receiving the open command of ultrasonic sensor.In this way, can
Ultrasonic sensor is constantly in working condition when being in the lock state to avoid terminal device, can save power consumption.
In one exemplary embodiment, terminal device generates the mode of the open command of ultrasonic sensor and includes but not
Be limited to such as under type: (1) terminal device detects the terminal device by acceleration transducer when being in the lock state
After attitudes vibration information meets the unlocking condition of the ultrasonic sensor, the open command of the ultrasonic sensor is generated,
Open command is for starting ultrasonic sensor work.For example, the unlocking condition of ultrasonic sensor can be at terminal device
In angled rollover states and overturn to vertical state.When the data that the system of terminal device is detected according to acceleration transducer
When determining that terminal device is in angled rollover states and overturning to vertical state, the unlatching that ultrasonic sensor can be generated refers to
It enables, terminal device starts ultrasonic sensor according to the open command and works.(2) terminal device go out screen state and in locking
When state, after detecting the pressing operation being applied on predetermined physical key, the open command is generated.For example, terminal device
When going out screen state and being in the lock state, when detecting that user is applied to the pressing operation on power key, ultrasonic wave is generated
The open command of sensor, terminal device start ultrasonic sensor according to the open command and work.
Using the geological information of ultrasonic sensor detection three-dimensional face, different from traditional visible light, infrared ray etc. three
The detection mode for tieing up the geological information of face has also different from the detection mode of fingerprint not by temperature, visible light light and shade journey
Degree, finger humidity etc. influence, the geological information that user only needs hand to take terminal device that acquisition face can be completed against face,
It is greatly user-friendly, there is convenience.
In step s 102, face verification is carried out according to the geological information.
In an exemplary implementation, whether it can first be determined according to above-mentioned geological information in barrier comprising three-dimensional people
Face is compared further according to geological information with preset face characteristic information when in determining barrier comprising three-dimensional face, into
Row face verification.Specifically, as shown in Fig. 2, this step may include following steps S201~S202:
In step s 201, the geological information is compared with preset 3D face database.
In one exemplary embodiment, 3D face database is pre-established in terminal device.The 3D face database
3D face sample data including the first number, for example, the 3D face database may include 100,000 3D face sample datas.It should
In 3D face sample data can the face of typing different crowd in advance 3D human face data, specifically, can typing in advance not
Same gender, different regions, different expression expression face 3D human face data.Terminal device can be read from above-mentioned database
Take the respective 3D human face data of face sample.In one exemplary embodiment, the 3D human face data of each three-dimensional face can
To be an array or matrix.Wherein, each 3D face sample data respectively includes corresponding face morphological feature point.It is above-mentioned
Geological information may include barrier configuration of surface data point.
It in one exemplary embodiment, can be as follows by the geological information and preset 3D face database
It is compared: firstly, by the corresponding people of 3D face sample data of the configuration of surface data point and first number
Shape of face state characteristic point is compared respectively.Then, the configuration of surface data point and the second number are being determined according to comparison result
3D face sample data have the characteristic point of same local facial form respectively after, determine in the geological information comprising face
Morphological feature, second number are less than first number.In this way, it is possible to reduce data processing amount improves face unlock speed
Degree.
Continue exemplary embodiments mentioned above, the configuration of surface data point of barrier is the set of multiple points, by the set
Being denoted as F, F can be an array or matrix.Each 3D face sample data in 3D face database is correspondingly also
The set of multiple points, can be denoted as Ri, wherein i indicates i-th of 3D face sample data, correspondingly, RiIt may be an array
Or matrix.It in the present example embodiment, can be by F and R1It is compared, and F and R is judged according to comparison result1Whether have
The characteristic point of standby same local facial form, for example, judging F and R1Whether the characteristic point of nose is had respectively, if so, by F
With R2It is compared, and F and R is judged according to comparison result2Whether the characteristic point of same local facial form is had, until F and the
The R of two numbersiThe characteristic point for having same local facial form.So far, it can determine in the geological information comprising face shape
State feature.
In another exemplary embodiment, the 3D face database includes 3D faceform, the 3D faceform
Include face morphological feature point；The geological information includes the configuration of surface data point of the barrier.Specifically, terminal device
In be pre-established with above-mentioned 3D face database.In the present example embodiment, it is possible, firstly, to whole 3D face sample numbers
According to being compared two-by-two, the common trait of whole 3D face sample datas is extracted, face morphological feature is obtained.Wherein, face
Morphological feature can be the prerequisite biological characteristic of human face expression.Then, 3D face can be established according to face morphological feature
Model.It is then possible to which the facial area according to face carries out block division to the 3D faceform, multiple blocks are obtained, often
A block carries the local feature information of face.When to 3D faceform progress block division, when obtaining a large amount of blocks, phase
When being similar to 3D faceform carrying out differential, available face in carrying out unlimited block division to the 3D faceform
Morphological feature point.
Continuing exemplary embodiments mentioned above, it can be as follows by the geological information and preset 3D face number
It is compared according to library: firstly, the configuration of surface data point and the face morphological feature point.Then, according to comparing
As a result determine the configuration of surface data point comprising after the face morphological feature point, determining in the geological information comprising face
Morphological feature.In the present example embodiment, as long as determining that configuration of surface data point includes the face morphological feature point
It determines comprising face morphological feature in the geological information, it is, including 3D face in barrier.
In step S202, when being determined according to comparison result in the geological information comprising face morphological feature, pass through
The geological information is compared with preset face characteristic information, carries out face verification.
In one embodiment, as shown in figure 3, may comprise steps of S301~S302 in step S202:
In step S301, the first difference between the geological information and preset face characteristic information is obtained.
In step s 302, when first difference meets preset condition, determine that face verification passes through.
In one embodiment, the face characteristic information of user is previously stored in terminal device.Face characteristic information can
To be an array or matrix.In one exemplary embodiment, face characteristic information can be matrix Mjk, j, k are natural number,
Geological information can be matrix F.It is being determined according to above-mentioned comparison result in geological information comprising after face morphological feature, it can be with
Obtain the first difference between geological information and preset face characteristic information.When first difference meets preset condition,
Determine that face verification passes through.
It in one embodiment, can be by between the first difference and zero between geological information and face characteristic information
Relationship compares geological information and face characteristic information.Theoretically, when the first difference is zero, the two is identical, when the first difference
When being not zero, the two is different.But in practical applications, it can be determined when the first difference is not zero but meets preset condition
The two is identical.For example, in limJ, k → ∞MjkWhen-F=0, determine that face verification passes through.It is, geological information and preset face
When difference between characteristic information is smaller, it can determine that face verification passes through.
In one embodiment, terminal device can preset face characteristic information described in preparatory typing in the following way
Mjk: firstly, obtaining the first 3D face characteristic information M of target facejk1；The first 3D face characteristic information Mjk1Including being in
The target face of amimia state corresponding 3D face characteristic information when relative to the terminal device different angle, often
The 3D face information that the target face of row matrix member and each angle is in amimia state corresponds.Then, target is obtained
2nd 3D face characteristic information M of facejk2；The 2nd 3D face characteristic information Mjk2It is respectively at least including target face
Corresponding 3D face characteristic information when one default emotional state.For example, the 2nd 3D face characteristic information Mjk2Including blinking
Corresponding 3D face characteristic information when eye, smile.Wherein, Mjk2The faces such as lip state, expression in the eyes and lower jaw form can be carried
On key organism feature.Then, according to the first 3D face characteristic information Mjk1With the 2nd 3D face characteristic information
Mjk2Between the second difference determine the preset face characteristic information.It is, preset face characteristic information MjkIt carries
Target face relative to terminal device different angle is in the 3D face characteristic information under different expression expressions.In this way, can be with
Guarantee to realize accurately face knowledge to user's face relative to terminal device different angle when carrying out recognition of face
Not.
In one exemplary embodiment, using the geometry of supersonic generator and ultrasonic receiver detection three-dimensional face
Information, quickly due to ultrasonic velocity, the geological information difference in each region of face are smaller, can be according in 3D face database
Data can reject the biggish data of receiving time of echo, it can according to the non-face area rejected in the geological information obtained
The geological information in domain retains the geological information of human face region, reduces the data processing amount of recognition of face, and then face can be improved
The speed of identification reduces the power consumption of terminal device.
In the embodiment of the present disclosure, 3D face database is previously stored in terminal device, it therefore, can be according to 3D face
The data of database reject the geological information in the non-face region in the geological information obtained, retain the geometry letter of human face region
Breath, reduces the data processing amount of recognition of face, and then the speed of recognition of face can be improved, reduces the power consumption of terminal device.
In one embodiment, it determines in the geological information according to the comparison result not comprising face morphological feature
When, the ultrasonic sensor can be closed.It is, determining that barrier does not include three-dimensional face according to the comparison result
When, the ultrasonic sensor can be closed, power consumption is saved.In this way, on the one hand can prevent maloperation from unlocking terminal device, drop
On the other hand the power consumption of low terminal device can prevent from mentioning using the fraudulent means such as the two dimensional images such as photo unlock terminal device
The safety of high unlocking terminal equipment.
In step s 103, after face verification passes through, unlock operation is executed.
In one embodiment, after face verification passes through, terminal device can execute unlock operation.
In the present embodiment, when terminal device is in the lock state, returning for ultrasonic wave is obtained by ultrasonic sensor
Wave information wherein carries the geological information for the barrier that ultrasonic wave encounters in the echo information, then according to geological information into
Row face verification executes unlock operation after face verification passes through.Due to detecting the geometry of barrier by ultrasonic sensor
Information, can to avoid the influence of the environmental factors such as temperature, light, it can thus be avoided face unlock when environmental factor influence,
And then improve unlock speed.
Fig. 4 is a kind of block diagram of face tripper shown according to an exemplary embodiment.For example, device 1000 can be with
It is mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, Medical Devices, body-building
Equipment, personal digital assistant etc..
Referring to Fig. 4, device 1000 may include following one or more components: processing component 1002, memory 1004, electricity
Source component 1006, multimedia component 1008, audio component 1010, the interface 1012 of input/output (I/O), sensor module
1014 and communication component 1016.
The integrated operation of the usual control device 1000 of processing component 1002, such as with display, telephone call, data communication,
Camera operation and record operate associated operation.Processing element 1002 may include one or more processors 1020 to execute
Instruction, to perform all or part of the steps of the methods described above.In addition, processing component 1002 may include one or more moulds
Block, convenient for the interaction between processing component 1002 and other assemblies.For example, processing component 1002 may include multi-media module,
To facilitate the interaction between multimedia component 1008 and processing component 1002.
Memory 1004 is configured as storing various types of data to support the operation in equipment 1000.These data
Example includes the instruction of any application or method for operating on device 1000, contact data, telephone book data,
Message, picture, video etc..Memory 1004 can by any kind of volatibility or non-volatile memory device or they
Combination is realized, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), it is erasable can
Program read-only memory (EPROM), programmable read only memory (PROM), read-only memory (ROM), magnetic memory, flash memory
Reservoir, disk or CD.
Electric power assembly 1006 provides electric power for the various assemblies of device 1000.Electric power assembly 1006 may include power management
System, one or more power supplys and other with for device 1000 generate, manage, and distribute the associated component of electric power.
Multimedia component 1008 includes the screen of one output interface of offer between described device 1000 and user.?
In some embodiments, screen may include liquid crystal display (LCD) and touch panel (TP).If screen includes touch panel,
Screen may be implemented as touch screen, to receive input signal from the user.Touch panel includes that one or more touch passes
Sensor is to sense the gesture on touch, slide, and touch panel.The touch sensor can not only sense touch or sliding is dynamic
The boundary of work, but also detect duration and pressure associated with the touch or slide operation.In some embodiments, more
Media component 1008 includes a front camera and/or rear camera.When equipment 1000 is in operation mode, as shot mould
When formula or video mode, front camera and/or rear camera can receive external multi-medium data.Each preposition camera shooting
Head and rear camera can be a fixed optical lens system or have focusing and optical zoom capabilities.
Audio component 1010 is configured as output and/or input audio signal.For example, audio component 1010 includes a wheat
Gram wind (MIC), when device 1000 is in operation mode, when such as call mode, recording mode, and voice recognition mode, microphone quilt
It is configured to receive external audio signal.The received audio signal can be further stored in memory 1004 or via communication
Component 1016 is sent.In some embodiments, audio component 1010 further includes a loudspeaker, is used for output audio signal.
I/O interface 1012 provides interface, above-mentioned peripheral interface module between processing component 1002 and peripheral interface module
It can be keyboard, click wheel, button etc..These buttons may include, but are not limited to: home button, volume button, start button and
Locking press button.
Sensor module 1014 includes one or more sensors, and the state for providing various aspects for device 1000 is commented
Estimate.For example, sensor module 1014 can detecte the state that opens/closes of equipment 1000, the relative positioning of component, such as institute
The display and keypad that component is device 1000 are stated, sensor module 1014 can be with detection device 1000 or device 1,000 1
The position change of a component, the existence or non-existence that user contacts with device 1000,1000 orientation of device or acceleration/deceleration and dress
Set 1000 temperature change.Sensor module 1014 may include proximity sensor, be configured in not any physics
It is detected the presence of nearby objects when contact.Sensor module 1014 can also include optical sensor, as CMOS or ccd image are sensed
Device, for being used in imaging applications.In some embodiments, which can also include acceleration sensing
Device, gyro sensor, Magnetic Sensor, pressure sensor or temperature sensor.
Communication component 1016 is configured to facilitate the communication of wired or wireless way between device 1000 and other equipment.Dress
The wireless network based on communication standard, such as WiFi can be accessed by setting 1000,2G or 3G or their combination.It is exemplary at one
In embodiment, communication component 1016 receives broadcast singal or broadcast correlation from external broadcasting management system via broadcast channel
Information.In one exemplary embodiment, the communication component 1016 further includes near-field communication (NFC) module, to promote short distance
Communication.For example, radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra wide band can be based in NFC module
(UWB) technology, bluetooth (BT) technology and other technologies are realized.
In the exemplary embodiment, device 1000 can be by one or more application specific integrated circuit (ASIC), number
Signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array
(FPGA), controller, microcontroller, microprocessor or other electronic components are realized, for executing the above method.
In the exemplary embodiment, a kind of non-transitorycomputer readable storage medium including instruction, example are additionally provided
It such as include the memory 1004 of instruction, above-metioned instruction can be executed by the processor 1020 of device 1000 to complete the above method.Example
Such as, the non-transitorycomputer readable storage medium can be ROM, random access memory (RAM), CD-ROM, tape, soft
Disk and optical data storage devices etc..
Those skilled in the art will readily occur to its of the disclosure after considering specification and practicing disclosure disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by following
Claim is pointed out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the accompanying claims.
Claims (12)
1. a kind of face unlocking method characterized by comprising
When terminal device is in the lock state, the echo information of ultrasonic wave is obtained by ultrasonic sensor；The echo letter
The geological information for the barrier that the ultrasonic wave encounters is carried in breath；
Face verification is carried out according to the geological information；
After face verification passes through, unlock operation is executed.
2. the method according to claim 1, wherein the method, further includes:
Meet the ultrasonic sensor in the attitudes vibration information for detecting the terminal device by acceleration transducer
After unlocking condition, the open command of the ultrasonic sensor is generated, the open command is for starting the supersonic sensing
Device work.
3. the method according to claim 1, wherein described carry out face verification, packet according to the geological information
It includes:
The geological information is compared with preset 3D face database；
When being determined according to comparison result in the geological information comprising face morphological feature, by by the geological information and in advance
If face characteristic information be compared, carry out face verification.
4. described according to the method described in claim 3, it is characterized in that, the 3D face database includes 3D faceform
3D faceform includes face morphological feature point；The geological information includes the configuration of surface data point of the barrier.
5. according to the method described in claim 4, it is characterized in that, described by the geological information and preset 3D human face data
Library is compared, comprising:
Compare the configuration of surface data point and the face morphological feature point；
After determining that the configuration of surface data point includes the face morphological feature point according to comparison result, the geometry is determined
It include face morphological feature in information.
6. according to the method described in claim 3, it is characterized in that, the 3D face database includes the 3D face of the first number
Sample data；The 3D face sample data of first number respectively includes corresponding face morphological feature point；The geometry letter
Breath includes the configuration of surface data point of the barrier.
7. according to the method described in claim 6, it is characterized in that, described by the geological information and preset 3D human face data
Library is compared, comprising:
By the corresponding face morphological feature of 3D face sample data of the configuration of surface data point and first number
Point is compared respectively；
Determining that the configuration of surface data point and the 3D face sample data of the second number have together respectively according to comparison result
After the characteristic point of one local facial form, determine that, comprising face morphological feature in the geological information, second number is less than
First number.
8. according to the method described in claim 3, it is characterized in that, described by the way that the geological information and preset face is special
Reference breath is compared, and carries out face verification, comprising:
Obtain the first difference between the geological information and preset face characteristic information；
When first difference meets preset condition, determine that face verification passes through.
9. according to the method described in claim 8, it is characterized in that, the method, further includes:
Obtain the first 3D face characteristic information of target face；The first 3D face characteristic information includes being in amimia state
Target face when relative to the terminal device different angle corresponding 3D face characteristic information；
Obtain the 2nd 3D face characteristic information of target face；The 2nd 3D face characteristic information includes that target face is located respectively
Corresponding 3D face characteristic information when at least one presets emotional state；
According to the second difference determination between the first 3D face characteristic information and the 2nd 3D face characteristic information
Preset face characteristic information.
10. according to the method described in claim 3, it is characterized in that, the method, further includes:
When being determined in the geological information according to the comparison result not comprising face morphological feature, closes the ultrasonic wave and pass
Sensor.
11. a kind of terminal device, which is characterized in that including processor and memory；
The memory, for storing computer program；
The processor realizes any one of claim 1-10 for executing the computer program stored on the memory
The method.
12. a kind of computer readable storage medium, which is characterized in that be stored with computer in the computer readable storage medium
Program realizes claim 1-10 described in any item methods when the computer program is executed by processor.
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