CN102970411B - Smart mobile phone screen locking solution lock control method and smart mobile phone based on Face datection - Google Patents
Smart mobile phone screen locking solution lock control method and smart mobile phone based on Face datection Download PDFInfo
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- CN102970411B CN102970411B CN201210409592.3A CN201210409592A CN102970411B CN 102970411 B CN102970411 B CN 102970411B CN 201210409592 A CN201210409592 A CN 201210409592A CN 102970411 B CN102970411 B CN 102970411B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of smart mobile phone screen locking solution lock control methods based on Face datection.The method that the present invention carries out screen locking unlock to smart mobile phone specifically includes：When screen locking or unlock need to be carried out to smart mobile phone, receive user's screen locking or unlock operational order, control automatically turn on mobile phone camera, the video image in front of mobile phone is obtained by mobile phone camera.Recognition of face is carried out to the video image of acquisition using face recognition technology, current face is identified from video image.Certification is compared with the benchmark face model stored in database in the current face that will identify that, when judging that current face is identical with the benchmark face model stored in database, then controls screen lock or unlock by the control unit of smart mobile phone.The present invention increases the smart mobile phone screen locking unlocked state based on Face datection in smart mobile phone, and user can be made to prevent the inconvenience that maloperation is brought when using the smart mobile phone and save unnecessary energy consumption.
Description
Technical field
The present invention relates to smart mobile phone field more particularly to a kind of smart mobile phone screen locking unlocks based on Face datection
Control method and smart mobile phone.
Background technology
Smart mobile phone（Smartphone), refer to " as PC, have independent operating system, can by with
Family voluntarily install the third party service providers such as software, game offer program, by this class method come constantly to the function of mobile phone into
Row expands, and the general name of so a kind of mobile phone of wireless network access can be realized by mobile communication network ".
With the power of the universal of smart mobile phone concept, the quickening of manufacturer terminal intellectual product line layout and telecom operators
It pushes away, smart mobile phone market access overgrowing phase.It is shown according to the research report that the world is issued a few days ago, China's smart mobile phone in 2011
Annual sales volume about 70,000,000, occupation rate of market is 27%.The mechanism predicts that the sales volume market accounting of smart mobile phone in 2012 is about
It is 45%, rose 18% compared with 2011.The half of the country that smart mobile phone will occupy mobile phone market has replaced the trend of functional mobile phone
Irreversible, the time of mobile phone market change of dynasties is at hand.
The appearance of smart mobile phone brings new experience, but since its generally use touch screen is as human-computer interaction for user
Interface and switch key control screen, therefore often bring many problems, and such as most male user likes mobile phone to be put into
In pocket, often due to other reasons, such as on foot when or the when of squeezing oneself into a croweded bus may often encounter switch button, so as to be in mobile phone
Open state, the serious stand-by time for influencing mobile phone, in addition, when mobile phone is in open state, touch screen and clothes rub
Wiping frequently can lead to some maloperations, most commonly automatic dialing phone and sends short messages, causes inconvenience to the user.
Therefore, the prior art has yet to be improved and developed.
Invention content
The technical problem to be solved in the present invention is, for the drawbacks described above of the prior art, provides a kind of based on face inspection
The smart mobile phone screen locking solution lock control method and smart mobile phone of survey, in order to solve these problems, the present invention is for touch screen intelligence
The characteristics of mobile phone, it is proposed that towards Face datection algorithm and the screen locking technology of smart mobile phone, on the one hand playing reduces mobile phone energy consumption
Effect, on the other hand can reduce the embarrassment that mobile phone misoperation is brought.
The technical proposal for solving the technical problem of the invention is as follows：
A kind of smart mobile phone screen locking solution lock control method based on Face datection, wherein, including being solved to smart mobile phone
The step of lock, described the step of being unlocked to smart mobile phone, specifically include：
A1, when that need to be unlocked to smart mobile phone, receive user unlock operational order, control automatically turn on cell-phone camera
Head obtains the first video image in front of mobile phone by mobile phone camera；
A2, recognition of face is carried out to first video image using face recognition technology, from first video image
In identify current face；
Certification is compared with the benchmark face model stored in database in A3, the current face that will identify that, judgement is
It is no identical；
A4, when judging that the current face is identical with the benchmark face model stored in database, and receive corresponding
Unlock operation button, then pass through the control unit of smart mobile phone carry out joint coordination control unlocking screen.
The smart mobile phone screen locking solution lock control method based on Face datection, wherein, it is described to smart mobile phone into
It is further included before the step of row unlock：
The operational order that the smart mobile phone receives user shoots and stores the benchmark face mould unlocked for screen locking in advance
Type and the operation button for pre-setting the joint screen locking unlock together with the benchmark face model.
The smart mobile phone screen locking solution lock control method based on Face datection, wherein, it further includes to smart mobile phone
The step of carrying out screen locking, described the step of carrying out screen locking to smart mobile phone, specifically include：
B1, when need to smart mobile phone carry out screen locking when, receive user's screen locking operational order, control automatically turn on cell-phone camera
Head obtains the second video image in front of mobile phone by mobile phone camera；
B2, recognition of face is carried out to second video image using face recognition technology, from second video image
In identify face for screen locking；
B3, it will identify that the face of the screen locking for screen locking is compared with the benchmark face model stored in database and recognize
Card, judges whether identical；
It is B4, described identical with the benchmark face model stored in database for the face of screen locking when judging, and receive
To corresponding screen locking operation button, then joint coordination is carried out by the control unit of smart mobile phone and control screen lock.
The smart mobile phone screen locking solution lock control method based on Face datection, wherein, the step A2 is specifically included：
A21, smart mobile phone illumination compensation unit to first video image carry out illumination compensation；
A22, the color compensating of smart mobile phone and correction unit by the first video image of illumination compensation to carrying out color
Compensation and correction；
A23, smart mobile phone image denoising unit to by color compensating with correction the first video image carry out noise reduction
Processing；
A24, smart mobile phone feature extraction unit to Jing Guo noise reduction process the first video image extraction image in use
To characterize the Harr-Like features of benchmark face and the SIFT feature for recognition of face；
A25, smart mobile phone grader unit using trained Adaboost graders to represent face Harr-
Like features complete two classification, realize Face datection, to detect current face from first video image, with SIFT spies
Sign identifies face.
The smart mobile phone screen locking solution lock control method based on Face datection, wherein, the step B2 is specifically included：
B21, smart mobile phone illumination compensation unit to second video image carry out illumination compensation；
B22, the color compensating of smart mobile phone and correction unit by the second video image of illumination compensation to carrying out color
Compensation and correction；
B23, smart mobile phone image denoising unit to by color compensating with correction the second video image carry out noise reduction
Processing；
B24, smart mobile phone feature extraction unit to Jing Guo noise reduction process the second video image extraction image in use
To characterize the Harr-Like features of benchmark face and the SIFT feature for recognition of face；
B25, smart mobile phone grader unit using trained Adaboost graders to represent face Harr-
Like features complete two classification, realize Face datection, recognition of face are completed with SIFT feature, with from first video image
It detects current face, face is identified with SIFT feature.
A kind of smart mobile phone using any of the above-described screen locking solution lock control method, wherein, including：
First image collection module unlocks operational order, control for when that need to be unlocked to smart mobile phone, receiving user
System automatically turns on mobile phone camera, and the first video image in front of mobile phone is obtained by mobile phone camera；
First identification module, for using face recognition technology to first video image carry out recognition of face, from institute
It states in the first video image and identifies current face；
First multilevel iudge module, for the current face that will identify that and the benchmark face model stored in database into
Row compares certification, judges whether identical；
Control unlock control module, for when the benchmark face model for judging to store in the current face and database
It is identical, and receive corresponding unlock operation button, then carrying out joint coordination by the control unit of smart mobile phone controls screen
Unlock.
The smart mobile phone, wherein, it further includes：
Module is pre-set, shoots in advance for receiving the operational order of user and stores the benchmark people unlocked for screen locking
Face model and the operation button for pre-setting the joint screen locking unlock together with the benchmark face model.
The smart mobile phone, wherein, it further includes：
Second image collection module unlocks operational order, control for when that need to carry out screen locking to smart mobile phone, receiving user
System automatically turns on mobile phone camera, and the second video image in front of mobile phone is obtained by mobile phone camera；
Second identification module, for using face recognition technology to second video image carry out recognition of face, from institute
State the face identified in the second video image for screen locking；
Second multilevel iudge module will identify that the benchmark face stored in the face and database of the screen locking for screen locking
Certification is compared in model, judges whether identical；
Screen locking control module, when the benchmark face model phase judged the face for screen locking and stored in database
Together, and corresponding screen locking operation button is received, then carrying out joint coordination by the control unit of smart mobile phone controls screen lock
Screen.
The smart mobile phone, wherein, first identification module includes：
Illumination compensation unit：For carrying out illumination compensation to first video image；
Color compensating and correction：For to carrying out color compensating and correction by the first video image of illumination compensation；
Image denoising unit：For to carrying out noise reduction process by color compensating and the first video image of correction；
Feature extraction unit：For to characterizing benchmark in the first video image extraction image Jing Guo noise reduction process
The Harr-Like features and the SIFT feature for recognition of face of face；
Grader unit：For complete to the Harr-Like features for representing face using trained Adaboost graders
Into two classification, realize Face datection, to detect current face from first video image, people is identified with SIFT feature
Face.
Smart mobile phone screen locking solution lock control method and smart mobile phone provided by the present invention based on Face datection, due to
The smart mobile phone screen locking unlocking function based on Face datection is increased in smart mobile phone, user can be made to use the smart mobile phone
When need by the method that recognition of face certification and combination button are combined to smart mobile phone carry out screen locking and unlock operate, so as to
It is effective to prevent because inconvenience that user misoperation is brought and saving unnecessary energy consumption.
Description of the drawings
Fig. 1 is that smart mobile phone is unlocked in the smart mobile phone solution lock control method the present invention is based on Face datection
The flow chart of preferred embodiment.
Fig. 2 is to carry out the preferable of screen locking to smart mobile phone the present invention is based on the smart mobile phone screen locking control method of Face datection
The flow chart of embodiment.
Fig. 3 is that smart mobile phone is unlocked in the smart mobile phone solution lock control method the present invention is based on Face datection
First video image identification of preferred embodiment goes out the flow chart of face method.
Fig. 4 is that smart mobile phone screen locking control method of the specific embodiment of the invention based on Face datection carries out smart mobile phone
Second video image identification of the preferred embodiment of screen locking goes out the flow chart of face method.
Fig. 5 is the functional schematic block diagram of smart mobile phone embodiment of the present invention.
Fig. 6 is the functional schematic block diagram of the first identification module of smart mobile phone embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and does not have to
It is of the invention in limiting.
A kind of smart mobile phone screen locking solution lock control method based on Face datection provided in an embodiment of the present invention, including to intelligence
Can mobile phone the step of being unlocked and the step of carry out screen locking to smart mobile phone, the wherein described step being unlocked to smart mobile phone
Suddenly, refer to Fig. 1, Fig. 1 be in the smart mobile phone screen locking solution lock control method the present invention is based on Face datection to smart mobile phone into
The flow chart of the preferred embodiment of row unlock.As shown in Figure 1, the embodiment that the present invention is unlocked smart mobile phone include it is following
Step：
The operational order that S110, the smart mobile phone receive user shoots and stores the benchmark people unlocked for screen locking in advance
Face model and the operation button for pre-setting the joint screen locking unlock together with the benchmark face model.
Smart phone user shoots the benchmark face model unlocked for screen locking using smart mobile phone first, and general shooting is certainly
Oneself facial image, a benchmark face model is provided according to the facial image of reception in smart mobile phone automatically, and sets in advance
The operation button unlocked for this benchmark face model together joint screen locking is put, this button can be the common screen locking unlock of mobile phone
Button, naturally it is also possible to be the combination button of two buttons of certain in mobile phone key or three buttons, when smart phone user needs
When being unlocked to mobile phone, smart mobile phone is by the facial image received and basic faceform's phase for being stored in smart mobile phone
Compare, the result compared for after identical, user smart mobile phone is carried out by pressing pre-set combination button screen locking or
Unlock.Preferably, it is smart phone user front clearly face's video image for setting the image of basic faceform.
S120, when that need to be unlocked to smart mobile phone, receive user unlock operational order, control automatically turn on mobile phone take the photograph
As head, the first video image in front of mobile phone is obtained by mobile phone camera.
When smart phone user is when needing to be unlocked mobile phone, user presses the release tab of smart mobile phone first,
Then smart mobile phone automatically controls unlatching mobile phone camera, by camera obtain mobile phone in front of facial video image, i.e., first
Video image.Preferably, this image is the front video image of user's face.
S130, recognition of face is carried out to first video image using face recognition technology, from the first video figure
Current face is identified as in.
Smart mobile phone carries out recognition of face using face recognition technology to the facial video image in front of the mobile phone that receives,
Recognition of face is carried out to the first video image, current face is identified in the image shot from camera.Carrying out face knowledge
When other, as shown in figure 3, comprising the following specific steps that：
S111, smart mobile phone illumination compensation unit to first video image carry out illumination compensation.
Due to the influence of illumination, there are many uncertainties in Static Human Face image acquisition procedures, such as：Light intensity, light source side
To, color etc..These uncertain factors so that the gray scale depth of face-image is uneven, and partially contrast is larger for face,
So as to the effect for influencing detection and finally identifying, it is therefore necessary to current face's video images to shooting to use illumination compensation skill
Art carries out illumination compensation, is to carry out illumination compensation to the first video image, so as to enable smart mobile phone from the video figure obtained
Facial image is correctly identified as in.Specific illumination compensation technology is to belong to the prior art, therefore details are not described herein.
S122, the color compensating of smart mobile phone and correction unit by the first video image of illumination compensation to carrying out color
Compensation and correction.
Since the diversity of human face posture and the variation of facial non-rigid determine the complexity of face pattern, face may be with
Different visual angles occur in the picture, in order to realize the robustness of detection method（Due to inaccurate characteristic or the parameter of making of measurement
Actual value can deviate its design value（Nominal value）, robustness refer to measurement it is inaccurate under conditions of, detection method maintain
The characteristic of its certain performance.）, also need to consider face in the background of various complexity, when different directions, angle, scale
The different presentations shown.And since different faces has very big change in shape, size, color, quality etc.
The property changed, same face have randomness in certain local features（Such as glasses, beard, hair style）, it is also possible to by certain objects
Block, cause it is certain for detecting and the face characteristics that need to extract are invisible, but also there is different expressions face and
Time interval generates variation of face etc., and it is therefore necessary to use color compensating with correcting unit to by the first of illumination compensation
Video image carries out color compensating and correction using color compensating and alignment technique.Wherein, specific color compensating and correction skill
Art is to belong to the prior art, therefore details are not described herein.
S133, smart mobile phone image denoising unit to by color compensating with correction the first video image carry out noise reduction
Processing.
Since the digital picture in reality is subjected to imaging device and external environmental noise in digitlization and transmission process
The influences such as interference, so the first video image of camera shooting is there may be various noises, in order to make intelligent hand
Function preferably sets out the facial image in the first video image, and it is therefore necessary to use image denoising unit to the first video
Image carries out image denoising.
S144, smart mobile phone feature extraction unit to Jing Guo noise reduction process the first video image extraction image in use
To characterize the Harr-Like features of benchmark face and the SIFT feature for recognition of face.
In this step, need to characterizing benchmark face in the first video image extraction image Jing Guo noise reduction process
Harr-Like features and the SIFT feature for recognition of face.Smart mobile phone is to carrying out above-mentioned processed first video figure
As using the Adaboost algorithm of the prior art based on Harr type features（Adaboost algorithm is Freund et al. propositions
A kind of Boost algorithms, its target is automatically to pick out several Weak Classifiers from Weak Classifier space to be integrated into one
Strong classifier.Weak Classifier refers to some rectangular characteristics that can most represent face, and principle is some weaker classification
Method merges one strong sorting technique of composition）Harr-Like feature extractions are carried out, so as to the grader for next step
Feature vector is provided, and uses Harr-Like character representation faces.First gone out in video image using Harr-Like feature extractions
Extract some simple face characteristics, all image-regions for including face found out from picture, by the image-region of face with
Non-face image-region separates.Wherein, extract in image to the Harr-Like features that characterize benchmark face and for people
The SIFT feature of face identification is to belong to the prior art, therefore details are not described herein.
S155, smart mobile phone grader unit using trained Adaboost graders to represent face Harr-
Like features complete two classification, realize Face datection, to detect current face from first video image, with SIFT spies
Sign identifies face.
It is specifically：Using the grader unit in smart mobile phone using trained Adaboost graders to representing people
The Harr-Like features of face complete two classification, and the region of face in video image and non-face region are accurately divided into two
To detect current face from first video image, face is identified with SIFT feature for class.
After completing to identify current face in first video image in step S130, S140 is entered step.
Certification is compared with the benchmark face model stored in database in S140, the current face that will identify that, judges
It is whether identical.
It stores the current face identified from the first video image that smart mobile phone is shot and in smart mobile phone
Certification is compared in benchmark face model, according to similitude judge whether be same person face.Such as：If similitude is high
Regarded as in 80% identical, by recognition of face certification, similitude is regarded as differing less than 80%, authentification failure.Certification
Smart mobile phone is further unlocked by can then carry out the step in S150, intelligence cannot be returned if if certification
It can the initial standby mode of mobile phone.
S150, when judging that the current face is identical with the benchmark face model stored in database, and receives phase
The unlock operation button answered then carries out joint coordination by the control unit of smart mobile phone and controls unlocking screen.
It is identical when judging face in the first video image with the benchmark face model stored in smartphone data library
, then smart mobile phone operates smart mobile phone according to pre-set combination button in step S110, and smart mobile phone is connect
After receiving corresponding unlock operation, joint coordination is carried out by the control unit of smart mobile phone and controls unlocking screen.I.e. the present invention is real
It applies in example in unlock, the combination coordinated using recognition of face with release tab is unlocked.
Further, as shown in Fig. 2, further including the step of carrying out screen locking to smart mobile phone in the method for the present invention embodiment,
The step of its progress screen locking, specifically includes：
The operational order that S210, the smart mobile phone receive user shoots and stores the benchmark people unlocked for screen locking in advance
Face model and the operation button for pre-setting the joint screen locking unlock together with the benchmark face model.The same step of concrete operations
S110 is similar.
S220, when need to smart mobile phone carry out screen locking when, receive user unlock operational order, control automatically turn on mobile phone take the photograph
As head, the second video image of video image in front of mobile phone is obtained by mobile phone camera.
When smart phone user needs to carry out screen locking to smart mobile phone, the screen locking operational order of smart mobile phone is first pressed.
Smart mobile phone then automatically turns on mobile phone camera, the video image of user's face is carried in front of shooting smart mobile phone, i.e., second regards
Frequency image.Preferably, this image is the front digital video image of user.Concrete operation step is the same as step S120.
S230, recognition of face is carried out to second video image using face recognition technology, from the second video figure
The face for screen locking is identified as in.
Smart mobile phone carries out recognition of face using face recognition technology to the facial video image in front of the mobile phone that receives,
Recognition of face is carried out to the second video image, current face is identified in the image shot from camera.Carrying out face knowledge
When other, smart mobile phone proceeds as follows step：
S211, smart mobile phone illumination compensation unit to second video image carry out illumination compensation.
Due to same step S111, smart mobile phone needs to carry out illumination compensation to the second video image of shooting.
S222, the color compensating of smart mobile phone and correction unit by the second video image of illumination compensation to carrying out color
Compensation and correction.
Due to same step S122, smart mobile phone needs to carry out color compensating and school to the second video image of shooting
Just.
S233, smart mobile phone image denoising unit to by color compensating with correction the second video image carry out noise reduction
Processing.
Due to same step S233, smart mobile phone needs to carry out at image denoising the second video image of shooting
Reason.
S244, smart mobile phone feature extraction unit to Jing Guo noise reduction process the second video image extraction image in use
To characterize the Harr-Like features of benchmark face and the SIFT feature for recognition of face.
Smart mobile phone carries out simple face characteristic extraction to carrying out above-mentioned processed second video image, so as under
The grader of one step provides feature vector, and uses Harr-Like character representation faces.
S255, smart mobile phone grader unit using trained Adaboost graders to represent face Harr-
Like features complete two classification, realize Face datection, recognition of face are completed with SIFT feature, with from first video image
It detects current face, face is identified with SIFT feature.
When complete step S230 using face recognition technology to second video image progress recognition of face, from described
After the face for screen locking is identified in second video image, it is transferred to step S240.
S240, it will identify that certification is compared with the benchmark face model stored in database for the face of screen locking,
Judge whether identical；
The face that Adaboost algorithm in above-mentioned steps is detected and the benchmark face stored in smartphone data library
Model carries out comparison certification, according to the two similitude judge whether be same person face.Recognize if similitude is higher than 80%
It is set to identical, by recognition of face certification, similitude is regarded as differing less than 80%, authentification failure.
It is S250, described identical with the benchmark face model stored in database for the face of screen locking when judging, and connect
Corresponding screen locking operation button is received, then carrying out joint coordination by the control unit of smart mobile phone controls screen lock.
When Face datection certification passes through, then smart phone user is according to pre-set screen locking combination button, to intelligent hand
Machine carries out screen locking operation.
Therefore the present invention by imaging sensor obtain image information, by illumination compensation technology, color compensating with
Alignment technique, Harr-Like Feature Extraction Technologies, SIFT feature extractive technique, Adaboost sorting techniques, screen locking control skill
Art.So as to which face datection application under complicated background environment, is on the one hand solved the energy consumption problem of mobile phone, on the other hand reduce
The inconvenience that the maloperation of mobile phone is brought.
Based on above method embodiment, the present invention also provides a kind of using such as above-described embodiment screen locking solution lock control method
Smart mobile phone, as shown in figure 5, the smart mobile phone is specifically included with lower module：
Module 310 is pre-set, shoots in advance for receiving the operational order of user and stores the base unlocked for screen locking
Quasi- faceform and the operation button for pre-setting the joint screen locking unlock together with benchmark face model.Specific such as above-mentioned step
Described in rapid S110.
First image collection module 320 refers to for when that need to be unlocked to smart mobile phone, receiving user and unlocking to operate
It enables, control automatically turns on mobile phone camera, and the first video image in front of mobile phone is obtained by mobile phone camera.Specifically, the
One image collection module, also includes image sensor cell, for obtaining visual information.Specifically such as above-mentioned steps S120 institutes
It states.
First identification module 330, for using face recognition technology to first video image carry out recognition of face, from
Current face is identified in first video image.As shown in fig. 6, the first picture recognition module 130 specifically further include with
Lower each unit module：Illumination compensation unit 131, for carrying out illumination compensation to first video image.Color compensating and school
Positive 132, for carrying out color compensating and correction by the first video image of illumination compensation.Image denoising unit 133, is used for
To carrying out noise reduction process by color compensating and the first video image of correction.Feature extraction unit 134, for passing through noise reduction
In the first video image extraction image of processing to the Harr-Like features that characterize benchmark face and for recognition of face
SIFT feature.Grader unit 135, for special to the Harr-Like for representing face using trained Adaboost graders
Sign completes two classification, realizes Face datection, recognition of face is completed with SIFT feature, to be detected from first video image
Current face identifies face with SIFT feature.Specifically as described in above-mentioned steps S130.
First multilevel iudge module 340, for the current face that will identify that and the benchmark face mould stored in database
Certification is compared in type, judges whether identical.Specifically as described in above-mentioned steps S140.
Control module 350 is unlocked, for when the benchmark face model for judging to store in the current face and database
It is identical, and receive corresponding unlock operation button, then carrying out joint coordination by the control unit of smart mobile phone controls screen
Unlock, specifically as described in above-mentioned steps S150.
Example is further carried out, as shown in figure 5, smart mobile phone of the present invention is specifically further included with lower module,
Second image collection module 350 refers to for when that need to carry out screen locking to smart mobile phone, receiving user's screen locking operation
It enables, control automatically turns on mobile phone camera, and the second video image in front of mobile phone is obtained by mobile phone camera.Second image obtains
Modulus block, also comprising an image sensor cell, for obtaining visual information.Specifically as described in above-mentioned steps S220.
Second identification module 360, for using face recognition technology to second video image carry out recognition of face, from
The face for screen locking is identified in second video image.
Second multilevel iudge module 370 will identify that the benchmark stored in the face and database of the screen locking for screen locking
Certification is compared in faceform, judges whether identical.Specifically as described in above-mentioned steps S240.
Screen locking control module 380, when the benchmark face mould for judging to store in the face and database for screen locking
Type is identical, and receives corresponding screen locking operation button, then carries out joint coordination control flow by the control unit of smart mobile phone
Curtain screen locking.Specifically as described in above-mentioned steps S250.
In conclusion the present invention mainly solves the problems, such as Face datection and the intelligence of Mobile phone screen and power supply under complex background
Switch problem.The present invention is using the image sensing and processing unit on Smartphone device, by reducing light to illumination compensation
According to influence, improve picture quality using color compensating and correcting algorithm, in order to further improve picture quality, reduce mobile phone
The influence of front camera noise, introduces noise reduction algorithm, is carried in order to which the detection for realizing to face employs Harr-Like features
Algorithm is taken, the good Adaboost graders of real-time performance are employed in the context of detection of face, so as to solve under complex environment
Intelligent human-face test problems, finally using Face datection result and with button carry out joint coordination control screen, realize intelligence
Screen locking and intelligent power control.
It should be understood that the application of the present invention is not limited to the above, it for those of ordinary skills, can
To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect range.
Claims (5)
1. a kind of smart mobile phone screen locking solution lock control method based on Face datection, which is characterized in that including to smart mobile phone into
The step of row unlock, described the step of being unlocked to smart mobile phone, specifically includes：
A1, when that need to be unlocked to smart mobile phone, receive user unlock operational order, control automatically turn on mobile phone camera,
The first video image in front of mobile phone is obtained by mobile phone camera；
A2, recognition of face is carried out to first video image using face recognition technology, known from first video image
Current face is not gone out；
Certification is compared with the benchmark face model stored in database in A3, the current face that will identify that, judges whether phase
Together；By the current face identified from the first video image that smart mobile phone is shot and the benchmark people stored in smart mobile phone
Face model is compared, according to similitude judge whether be same person face, if similitude higher than regarding as phase if 80%
Together, by recognition of face certification, difference, authentification failure are regarded as if similitude is less than 80%；
A4, when judging that the current face is identical with the benchmark face model stored in database, and receives corresponding solution
Operation button is locked, then carrying out joint coordination by the control unit of smart mobile phone controls unlocking screen；
It is further included before described the step of being unlocked to smart mobile phone：
The operational order that the smart mobile phone receives user shoots and stores the benchmark face model unlocked for screen locking in advance, with
And pre-set the operation button that joint screen locking unlocks together with the benchmark face model；The image of the benchmark face model is
Smart phone user front clearly face's video image；
The operation button is the common screen locking release tab of smart mobile phone or is two or three in smart mobile phone button
Combination button；
The step A2 is specifically included：
A21, smart mobile phone illumination compensation unit to first video image carry out illumination compensation；
A22, the color compensating of smart mobile phone and correction unit by the first video image of illumination compensation to carrying out color compensating
With correction；
A23, smart mobile phone image denoising unit to by color compensating with correction the first video image carry out noise reduction process；
A24, smart mobile phone feature extraction unit to Jing Guo noise reduction process the first video image extraction image in table
The Harr-Like features and the SIFT feature for recognition of face for levying benchmark face；
A25, the grader unit of smart mobile phone are special to the Harr-Like for representing face using trained Adaboost graders
Sign completes two classification, realizes Face datection, to detect current face from first video image, is identified with SIFT feature
Go out face.
2. the smart mobile phone screen locking solution lock control method according to claim 1 based on Face datection, which is characterized in that its
The step of screen locking is carried out to smart mobile phone is further included, described the step of carrying out screen locking to smart mobile phone specifically includes：
B1, when need to smart mobile phone carry out screen locking when, receive user's screen locking operational order, control automatically turn on mobile phone camera,
The second video image in front of mobile phone is obtained by mobile phone camera；
B2, recognition of face is carried out to second video image using face recognition technology, known from second video image
Do not go out the face for screen locking；
B3, it will identify that certification is compared with the benchmark face model stored in database in the face of the screen locking for screen locking,
Judge whether identical；
It is B4, described identical with the benchmark face model stored in database for the face of screen locking when judging, and receive phase
The screen locking operation button answered then carries out joint coordination by the control unit of smart mobile phone and controls screen lock.
3. the smart mobile phone screen locking solution lock control method according to claim 2 based on Face datection, which is characterized in that institute
Step B2 is stated to specifically include：
B21, smart mobile phone illumination compensation unit to second video image carry out illumination compensation；
B22, the color compensating of smart mobile phone and correction unit by the second video image of illumination compensation to carrying out color compensating
With correction；
B23, smart mobile phone image denoising unit to by color compensating with correction the second video image carry out noise reduction process；
B24, smart mobile phone feature extraction unit to Jing Guo noise reduction process the second video image extraction image in table
The Harr-Like features and the SIFT feature for recognition of face for levying benchmark face；
B25, the grader unit of smart mobile phone are special to the Harr-Like for representing face using trained Adaboost graders
Sign completes two classification, realizes Face datection, recognition of face is completed with SIFT feature, to be detected from first video image
Current face identifies face with SIFT feature.
A kind of 4. smart mobile phone using the screen locking solution lock control method as described in claim any one of 1-3, which is characterized in that packet
It includes：
Module is pre-set, shoots in advance for receiving the operational order of user and stores the benchmark face mould unlocked for screen locking
Type and the operation button for pre-setting the joint screen locking unlock together with the benchmark face model；
First image collection module unlocks operational order for when that need to be unlocked to smart mobile phone, receiving user, and control is certainly
It is dynamic to open mobile phone camera, the first video image in front of mobile phone is obtained by mobile phone camera；
First identification module, for carrying out recognition of face to first video image using face recognition technology, from described the
Current face is identified in one video image；
First multilevel iudge module is compared for the current face that will identify that and the benchmark face model stored in database
To certification, judge whether identical；By the current face identified from the first video image that smart mobile phone is shot and intelligence
The benchmark face model stored in mobile phone is compared, according to similitude judge whether be same person face, if similar
Property is regarded as identical higher than 80%, by recognition of face certification, difference is regarded as if similitude is less than 80%, certification is lost
It loses；
Control unlock control module, judges the current face and the benchmark face model phase stored in database for working as
Together, and corresponding unlock operation button is received, then carrying out joint coordination by the control unit of smart mobile phone controls screen solution
Lock；The image of the benchmark face model is smart phone user front clearly face's video image；
The operation button is the common screen locking release tab of smart mobile phone or is two or three in smart mobile phone button
Combination button；
First identification module includes：
Illumination compensation unit：For carrying out illumination compensation to first video image；
Color compensating and correction：For to carrying out color compensating and correction by the first video image of illumination compensation；
Image denoising unit：For to carrying out noise reduction process by color compensating and the first video image of correction；
Feature extraction unit：For to characterizing benchmark face in the first video image extraction image Jing Guo noise reduction process
Harr-Like features and the SIFT feature for recognition of face；
Grader unit：For completing two to the Harr-Like features of expression face using trained Adaboost graders
Classification realizes Face datection, to detect current face from first video image, face is identified with SIFT feature.
5. smart mobile phone according to claim 4, which is characterized in that it is further included：
Second image collection module unlocks operational order for when that need to carry out screen locking to smart mobile phone, receiving user, and control is certainly
It is dynamic to open mobile phone camera, the second video image in front of mobile phone is obtained by mobile phone camera；
Second identification module, for carrying out recognition of face to second video image using face recognition technology, from described the
The face for screen locking is identified in two video images；
Second multilevel iudge module will identify that the benchmark face model stored in the face and database of the screen locking for screen locking
Certification is compared, judges whether identical；
It is screen locking control module, described identical with the benchmark face model stored in database for the face of screen locking when judging,
And receive corresponding screen locking operation button, then carrying out joint coordination by the control unit of smart mobile phone controls screen lock.
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