CN106250851A - A kind of identity identifying method, equipment and mobile terminal - Google Patents
A kind of identity identifying method, equipment and mobile terminal Download PDFInfo
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- CN106250851A CN106250851A CN201610620252.3A CN201610620252A CN106250851A CN 106250851 A CN106250851 A CN 106250851A CN 201610620252 A CN201610620252 A CN 201610620252A CN 106250851 A CN106250851 A CN 106250851A
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- Prior art keywords
- face
- image
- user
- recognition
- iris identification
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- 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
- G06V40/18—Eye characteristics, e.g. of the iris
Abstract
The invention discloses a kind of identity identifying method, including: the face-image of user to be identified is gathered by compound imaging device；Face-image being carried out human eye detection, if human eye being detected in second area image, then entering recognition of face pattern；Judge whether this second area image meets recognition of face condition；If meeting, carry out recognition of face；According to face recognition result preliminary judgement, this user is the most legal；If this user of preliminary judgement is validated user, then enter iris identification pattern；Again obtain this user and comprise the first area image of human eye in the first region；From the image of first area, location cuts out eyes image, and judges whether this eyes image meets iris identification condition；If meeting, carry out iris identification；Again determine whether this user is validated user according to iris identification result.The invention also discloses ID authentication device and the mobile terminal of correspondence.
Description
Technical field
The present invention relates to area of pattern recognition, more particularly, to a kind of identity identifying technology.
Background technology
In recent years, along with high speed development and the raising of people's living standard of computer techno-stress technology, mobile terminal
Function constantly promote user mobile terminal can be utilized to carry out entertaining, shopping etc., it is the most convenient to bring for user's life, but
Meanwhile, potential safety hazard the most constantly manifests: user profile is maliciously stolen, and mobile payment, that mobile financing exists huge safety is hidden
Suffer from ... so, the technology being carried out authentication by living things feature recognition is widely studied at mobile terminal and applies.
Traditional living things feature recognition includes: fingerprint recognition, recognition of face, iris identification, Application on Voiceprint Recognition etc., wherein,
Recognition of face and iris identification are due to non-contacting user data acquisition mode, it is possible to be substantially reduced user data and maliciously stolen
Probability, obtained increasingly extensive application on mobile terminals.But find in research later, the biology of single mode
Feature identification technique has certain limitation.Such as iris identification is to identifying that distance is more sensitive, and recognition of face performance is the easiest
Affected by ambient light change.Therefore, merge two kinds of (or two or more) biometrics identification technologies on mobile terminals, to improve
The Stability and veracity identified, ensures user information safety tool to applying biometrics identification technology under mobile internet environment
Significant.
In view of the accuracy identified, carry out on mobile terminals to utilize independence when iris, face multimodal recognition
Near infrared light photographic head and conventional auto heterodyne front-facing camera realize.Like this, iris and man face image acquiring equipment
Separate, this can cause Hardware Design complexity and cost significantly to rise, and is unfavorable for the universal of application.Meanwhile,
Complexity that also can increase separate iris and man face image acquiring equipment iris identification and face recognition process merge and
Speed, affects Consumer's Experience.
Summary of the invention
To this end, the present invention provides a kind of identity identifying method, equipment and mobile terminal, to try hard to solve or at least alleviate
At least one problem existed above.
According to an aspect of the invention, it is provided a kind of identity identifying method, method includes step: pass through complex imaging
Equipment gathers the face-image of user to be identified, and wherein compound imaging device is suitable to utilize the optical filter box of subregion subrane
Incident light source is divided into the light of two groups of two wave bands, and imaging respectively on the region that imageing sensor is corresponding, obtains near-infrared
The first area image of photoimaging and the second area image of visual light imaging；Face-image is carried out human eye detection, if
One area image and second area image are all not detected by human eye, the then face-image of this user of Resurvey；If second
Area image detects human eye, then enters recognition of face pattern；Judge whether this second area image meets recognition of face bar
Part；If meeting recognition of face condition, then carry out recognition of face according to the face characteristic in second area image；According to recognition of face
This user is the most legal for result preliminary judgement；If this user of preliminary judgement is validated user, then enter iris identification pattern；Pass through
Compound imaging device obtains this user and comprises the first area image of human eye in the first region；Position from the image of first area
Cut out eyes image, and judge whether this eyes image meets iris identification condition；If meeting iris identification condition, then from eye
Portion's image extracts iris feature to carry out iris identification；And the legal body of this user is again determined according to iris identification result
Part.
Alternatively, according in the identity identifying method of the present invention, the face-image collected is carried out human eye detection
After step, in the image of first area, detect human eye if further comprising the steps of:, then enter iris identification pattern；From the firstth district
In area image, location cuts out eyes image, and judges whether this eyes image meets iris identification condition；If meeting iris to know
Other condition, then extract iris feature to carry out iris identification from eyes image；According to iris identification this use of result preliminary judgement
Family is the most legal；If this user of preliminary judgement is validated user, then enter recognition of face pattern；Obtained by compound imaging device
This user comprises the second area image of human eye in the second area；Judge whether this second area image meets recognition of face bar
Part；If meeting recognition of face condition, then carry out recognition of face according to the face characteristic of second area image；And know according to face
Other result determines the legal identity of this user again.
Alternatively, according in the identity identifying method of the present invention, it is judged that whether second area image meets recognition of face
The step of condition includes: extract the face key point in second area image；Judge whether the face key point extracted wraps
Containing specific key point；If comprising specific key point, then add up the face key point number extracted, it is judged that whether this number meets
Recognition of face condition；If meeting recognition of face condition, then judge whether user's attitude meets face and adopt according to the key point extracted
Collection requirement, as met, carries out recognition of face, if not meeting, and Resurvey second area image.
Alternatively, according in the identity identifying method of the present invention, it is judged that whether eyes image meets iris identification condition
Step include: calculate eyes image image quality parameter, it is judged that it is pre-conditioned whether its picture quality meets；If meeting pre-
If condition, then calculate the iris radius in eyes image, pupil of both eyes spacing, to judge iris radius value and pupil of both eyes spacing
Whether value meets iris identification condition；If meeting iris identification condition, then carry out iris identification, otherwise Resurvey first area
Image.
Alternatively, according in the identity identifying method of the present invention, this user is obtained first by compound imaging device
The step of the correspondence image comprising human eye in region or second area includes: guide user to be identified to adjust by display adjustment signal
The angle of face and compound imaging device of giving sb. a hard time is or/and distance, until human eye being detected in the image of corresponding region.
Alternatively, according in the identity identifying method of the present invention, also include that user is from the current recognition mode of main separation
Step: if user selects current recognition mode to be iris identification pattern, then by adjusting shooting angle or/and distance gathers user
Comprise the first area image of human eye in the first region；This first area image is performed location determination step, iris identification
Step, with preliminary judgement, this user is the most legal；If this user of preliminary judgement is validated user, then enter recognition of face pattern；
Gather this user and comprise the second area image of human eye in the second area；And perform to judge step to this second area image
Suddenly, recognition of face step, again to determine the legal identity of this user.
Alternatively, according in the identity identifying method of the present invention, user is from the step of the current recognition mode of main separation also
Including: if user selects current recognition mode to be face recognition mode, then by adjusting shooting angle or/and distance gathers user
Comprise the second area image of human eye in the second area；Perform to judge step, recognition of face step to this second area image,
With preliminary judgement, this user is the most legal；If this user of preliminary judgement is validated user, then enter iris identification pattern；Gathering should
User comprises the first area image of human eye in the first region；And this first area image is performed location determination step,
Iris identification step, again to sentence the legal identity determining this user.
According to a further aspect in the invention, it is provided that a kind of ID authentication device, this ID authentication device and complex imaging
Equipment couples mutually, and ID authentication device includes: receive unit, is suitable to receive the user to be identified gathered via compound imaging device
Face-image and under iris identification pattern, receive this user of being gathered by compound imaging device and comprise in the first region
The first area image of human eye, wherein, compound imaging device is suitable to utilize the optical filter box of subregion subrane by incident illumination
Source is divided into the light of two groups of two wave bands, and imaging respectively on the region that imageing sensor is corresponding, obtains near infrared light imaging
The second area image of first area image and visual light imaging；Human eye detection unit, is suitable to face-image is carried out human eye inspection
Survey；Judging unit, is suitable to judge whether there is human eye in face-image, wherein, if at first area image and second area figure
All it is not detected by human eye in Xiang, is then received by the face-image of this user of compound imaging device Resurvey by reception unit,
If human eye being detected in second area image, then enter recognition of face pattern；Positioning unit, is suitable in iris identification pattern
Under, from the image of first area, location cuts out eyes image；Judging unit is further adapted for judging whether second area image meets
Recognition of face condition and judge to be positioned whether the eyes image obtained meets iris identification condition；Recognition unit, is suitable to
When meeting recognition of face condition, carry out recognition of face according to the face characteristic of second area image and meeting iris identification
During condition, from eyes image, extract iris feature to carry out iris identification；And authentication ' unit, be suitable to tie according to recognition of face
Really this user of preliminary judgement is the most legal, when judging this user as validated user, enters iris identification pattern and is further adapted for
The legal identity of this user is again determined according to iris identification result.
Alternatively, according in the ID authentication device of the present invention, it is judged that unit is further adapted for existing through human eye detection unit
When first area image detects human eye, it is introduced into iris identification pattern；Authentication ' unit is further adapted for according to iris identification result
This user is the most legal for preliminary judgement, if this user of preliminary judgement is validated user, then enters recognition of face pattern；Receive unit
It is further adapted under recognition of face pattern, receives and comprised human eye in the second area by this user of compound imaging device Resurvey
Second area image；And authentication ' unit is further adapted for again determining the legal identity of this user according to face recognition result.
Alternatively, according in the ID authentication device of the present invention, it is judged that unit includes: feature extraction subelement, be suitable to
Extract the face key point in second area image；Whether judgment sub-unit, be suitable to wrap in the face key point judging to be extracted
Containing specific key point；Statistics subelement, is suitable to after judging to comprise specific key point, and the face key that statistics is extracted is counted
Mesh；Judgment sub-unit is further adapted for judging whether this number meets recognition of face condition, if meeting, then sentences according to the key point extracted
Whether disconnected user's attitude meets face gathers requirement, as met, carries out recognition of face, otherwise Resurvey second area image.
Alternatively, according in the ID authentication device of the present invention, it is judged that unit also includes: computation subunit, meter is suitable to
Calculate the iris radius in the image quality parameter of eyes image, eyes image, pupil of both eyes spacing；Judgment sub-unit is further adapted for sentencing
Whether its picture quality disconnected meets pre-conditioned, and is further adapted for when meeting pre-conditioned, it is judged that iris radius value and eyes pupil
Whether pitch of holes value meets iris identification condition, if meeting iris identification condition, then carries out iris identification, otherwise Resurvey
One area image.
Alternatively, according in the ID authentication device of the present invention, also include: control unit, be suitable to pass through control signal
Display guides user to be identified to adjust the angle of face and compound imaging device or/and distance, until at corresponding region image
In human eye detected.
Alternatively, according in the ID authentication device of the present invention, reception unit is further adapted for receiving user and works as from main separation
Front recognition mode, wherein, if user selects current recognition mode to be iris identification pattern, then first carries out iris identification and carries out tentatively
Judge, perform recognition of face again and again determine the legal identity of user；If user selects current recognition mode to be recognition of face mould
Formula, then first carry out recognition of face and carry out preliminary judgement, perform iris identification again and again determine the legal identity of user.
Alternatively, according in the ID authentication device of the present invention, control unit is further adapted for showing to come by control signal
User to be identified is guided to adjust the angle of face and compound imaging device, to collect the figure meeting current recognition mode requirement
Picture.
According to another aspect of the invention, it is provided that a kind of mobile terminal, including ID authentication device as above；And
Compound imaging device, couples mutually with ID authentication device, including: lens assembly, including the optical lens of fixed focal length；Optical filter
Assembly, the reddest with allow near infrared light wave band to pass through including the visible band pass filter allowing the light of visible light wave range to pass through
Outer smooth bandpass region；And imageing sensor, including visual light imaging region, near infrared light imaging region and the two region
Between transitional region, wherein, it is seen that photoimaging area under visual light imaging pattern to by visible band pass filter
Visible ray carries out imaging, and near infrared light imaging region under near infrared light imaging pattern to by near infrared light bandpass filter
The near infrared light of sheet carries out imaging.
Owing to the image capture device of iris and face is separate, therefore, iris to be realized the most simultaneously and know
Other and recognition of face has certain difficulty, but as it was noted above, the biometrics identification technology of single mode has again certain
Limitation.The existing scheme realizing recognition of face and iris identification combination on mobile terminals, can only gather the reddest simply
Outer smooth facial image, compares it with face database and iris image database, respectively to complete recognition of face
And iris identification.It is to be appreciated that face database is typically all facial image based on visual light imaging, near by gather
Infrared light facial image is compared with the visible ray facial image in data base will certainly reduce the accuracy of identification.
And when this programme performs recognition of face and iris identification step, carried out collection image → confirmation image the most respectively
Meet the steps such as identification condition → identification judgement, and the image gathered is corresponding with recognition mode: be under recognition of face pattern, right
The image answered is visible ray facial image；Under iris identification pattern, corresponding is near infrared eyes image.If according to face
Image preliminary judgement user is validated user, with regard to carrying out iris image acquiring again, further determines that this user according to iris image
Legal identity.In like manner, if the legal identity of user according to iris image preliminary judgement before this, adopt with regard to carrying out facial image again
Collection, further determines that the legal identity of this user according to facial image.By such re-authentication mode, it is possible to carry further
The high accuracy identified and reliability；Further, from hardware cost, this programme does not increase extra CCD camera assembly, no
Can impact by use mobile terminal normal to user.
It addition, this programme can also be by carrying out human eye detection to the face-image collected first, according to the one-tenth of human eye
Image position automatically selects the most optimal living things feature recognition pattern, and sequentially completes recognition of face and iris identification both of which
Under authentication.Specifically, if human eye is in visual light imaging region, then first carries out recognition of face and carry out iris identification again, if
Detect that human eye, near infrared imaging region, the most first carries out iris identification and carries out recognition of face again.Certainly, user can also basis
The custom of self and demand are from main separation recognition mode.Whole identification process is more intelligent, convenient, is ensureing identification accuracy
Meanwhile, also there is good Consumer's Experience.
Accompanying drawing explanation
In order to realize above-mentioned and relevant purpose, herein in conjunction with explained below and accompanying drawing, some illustrative side is described
Face, these aspects indicate can to put into practice the various modes of principles disclosed herein, and all aspects and equivalence aspect
It is intended to fall under in the range of theme required for protection.By reading in conjunction with the accompanying detailed description below, the disclosure above-mentioned
And other purpose, feature and advantage will be apparent from.Throughout the disclosure, identical reference generally refers to identical
Parts or element.
Fig. 1 shows the flow chart of identity identifying method 100 according to an embodiment of the invention；
Fig. 2 shows the schematic diagram of compound imaging device 200 according to an embodiment of the invention；
Fig. 3 shows the three kinds of situation comparison diagrams being gathered face-image by compound imaging device 200；
Fig. 4 shows the flow chart of identity identifying method 400 according to another embodiment of the present invention；
Fig. 5 shows that compound imaging device 200 exports image schematic diagram under iris identification pattern；
Fig. 6 shows that compound imaging device 200 exports image schematic diagram under recognition of face pattern；
Fig. 7 shows the block diagram of ID authentication device 700 according to an embodiment of the invention；And
Fig. 8 shows the block diagram of the ID authentication device 700 according to further embodiment of this invention.
Detailed description of the invention
It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although accompanying drawing shows the disclosure
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure and should be by embodiments set forth here
Limited.On the contrary, it is provided that these embodiments are able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
Fig. 1 shows based on multi-biometric feature recognition according to an embodiment of the invention identity identifying method 100
Flow chart.
According to a kind of implementation, it is adapted for carrying out the mobile terminal of method 100 except including that memory interface, data process
Outside the necessary configuration such as device, CPU, peripheral interface, screen, also include that the complex imaging being embodied as photographic head module sets
For 200, near-infrared light source and ID authentication device 700.Wherein, ID authentication device 700 and compound imaging device 200 phase
Couple, for performing this method 100, completing the identity verification scheme of multi-biometric feature recognition.
Usually, compound imaging device 200 is arranged in the side in mobile terminal screen front, such as the top of screen or
Bottom of screen.Near-infrared light source can include in 780～880nm wavelength band or many infrared LEDs, alternatively, closely
Infrared light supply is positioned under the touch pad of mobile terminal, such as, and the face-key bottom (such as Home key bottom) of mobile terminal,
So need not cause affecting visual appearance in the special perforate in other positions.
Fig. 2 shows the schematic diagram of compound imaging device 200 according to an embodiment of the invention.As in figure 2 it is shown, this is multiple
Synthesized image equipment 200 includes imageing sensor 210, optical filter box 220, lens assembly 230.An enforcement according to the present invention
Example, optical filter box 220 includes that visible band pass filter 221 and near infrared light bandpass filter 222 (are illustrated as with anti-
Oblique line is filled)；Imageing sensor 210 includes that the first area near infrared light imaging (is illustrated as filling out with backslash
Fill), (be shown as filling out with horizontal line for the second area of visual light imaging and the transitional region between first, second region
Fill).
Full spectrum light line incidence is through lens assembly 230 and arrives optical filter box 220, wherein visible band pass filter
221 allow visible ray (such as, wavelength is 380-760nm) to pass through, and near infrared light bandpass filter 222 allows near infrared light
(such as, wavelength is 780-880nm) passes through.Visible band pass filter 221 and near infrared light bandpass filter 222 can pass through
Plated film realizes.By the visible ray of visible band pass filter 221 substantially in the second area imaging of imageing sensor 210,
And by the near infrared light of near infrared light bandpass filter 222 substantially in the first area imaging of imageing sensor 210.Utilize figure
Respectively the imaging area in first, second region of imageing sensor can be separated as processing software, the wherein one-tenth of second area
As using the imaging when mobile terminals such as such as mobile phone carry out daily auto heterodyne corresponding to normal visual light imaging, such as user,
And the imaging of first area is corresponding to the imaging under near-infrared pattern, the such as user one-tenth when using mobile phone to carry out iris identification
Picture.
In step s 110, the face-image of user to be identified is gathered by compound imaging device 200.As it has been described above, adopt
Collect to user's face image include near infrared light and the two-part image of visible ray (due to transitional region limited area, it be main
Visual light imaging had an impact, and this impact can be eliminated by image processing software, so place is to transitional region imaging
It is not covered).
As it is shown on figure 3, gather the face-image of user it is possible that following three kinds of feelings by compound imaging device 200
Shape, each imaging region (is divided into three parts in figure, is the reddest the most successively by (a), (b), (c) in corresponding diagram 3 respectively
Outer imaging region, transitional region, visual light imaging region):
1. such as Fig. 3 (a), human eye is positioned in the second area image of visual light imaging；
2. such as Fig. 3 (b), human eye is positioned in the first area image of near infrared light imaging；
3. such as Fig. 3 (c), human eye is neither in the image of first area, the most not in second area image.
The most in the step s 120, the face-image collected is carried out human eye detection:
If being all not detected by human eye (3. the most above-mentioned plant situation) in first area image and second area image, then return
Return the face-image of step S110 this user of Resurvey；
If human eye (1. the most above-mentioned plant situation) being detected in second area image, i.e. obtain visible images, therefore, enter
Enter recognition of face pattern.
The most in step s 130, under recognition of face pattern, it is judged that whether this second area image meets recognition of face
Condition.
Specifically, the face key point in second area image is first extracted, it is judged that in the face key point extracted whether
Containing specific key point (such as, near the key point of face surrounding profile), if comprising specific key point, illustrating to collect
The face of abundant area, then the number of the face key point that statistics is extracted again, sufficient amount of for face knowledge when having
When another characteristic point (that is, face key point) occurs in the facial image of acquisition, it is considered as meeting recognition of face condition.
Further, it is also possible to judge whether user's attitude meets face and gather requirement, example according to the key point extracted
As, user must be camera lens faced by front, and the face key point now collected should be symmetrical.Adopt as met face
Collection requirement, then carry out recognition of face, if not meeting, returns step S110, Resurvey second area image.
Subsequently in step S140, after judging that second area image meets recognition of face condition, according to second area figure
Face characteristic in Xiang carries out recognition of face.It should be noted that, face recognition algorithms is not restricted by the present invention, any face
Recognizer can combine with embodiments of the invention, to complete recognition of face step.
Subsequently in step S150, according to face recognition result preliminary judgement, this user is the most legal.That is, if noting
Can match the face characteristic of this user in the user library of volume, then this user of preliminary judgement is legal, and otherwise user is illegal, knot
Restraint this authenticating user identification.
Previously mentioned, recognition of face performance is easily affected by ambient light change and accuracy of identification is not as good as iris identification, therefore
After recognition of face preliminary judgement user is validated user, also need to be further confirmed that by iris identification.
Subsequently in step S160, after this user of preliminary judgement is validated user, enter iris identification pattern: by multiple
Synthesized image equipment 200 obtains this user and comprises the first area image of human eye in the first region.One according to the present invention is real
Execute mode, the display screen of mobile terminal can show the image of shooting in real time, therefore by showing adjustment on the display screen
Signal just can guide user to be identified to adjust the angle of face and compound imaging device or/and distance, until in first area
Image detects shown in human eye, the i.e. such as Fig. 3 (b) of imaging on imageing sensor 210.
Subsequently in step S170, from the image of first area, location cuts out eyes image, and judges this eyes image
Whether meet iris identification condition.
The effect of reflection is focused on owing to eyes image can be affected when eyes image is unintelligible, therefore can be first in iris identification early stage
Add and eyes image quality is considered, i.e. first calculate the image quality parameter of this eyes image, it is judged that its picture quality whether
Meet pre-conditioned.Alternatively, image quality parameter includes the definition of eyes image, contrast, signal to noise ratio etc..
If it follows that picture quality meets pre-conditioned, then calculate between the iris radius in eyes image, pupil of both eyes
Away from, to judge whether iris radius value and pupil of both eyes distance values meet iris identification condition, if meeting iris identification condition, then
Carry out iris identification, otherwise return step S160 Resurvey first area image.
Subsequently in step S180, after judging that first area image meets iris identification condition, from first area image
Eyes image in extract iris feature, to carry out iris identification.It should be noted that, Algorithm of Iris Recognition is not made by the present invention
Limiting, any Algorithm of Iris Recognition can combine with embodiments of the invention, has completed iris identification step.
Subsequently in step S190, again determining the legal identity of this user according to iris identification result, output result is also
Terminate this authenticating user identification.That is, if the iris feature of this user can be matched in the most chartered user library,
Confirm that this user is legal eventually.
The method 100 carrying out authenticating user identification in conjunction with recognition of face and iris identification so far terminates.Should by describing
Understanding, this method, when performing recognition of face and iris identification step, has carried out collection image → confirmation image the most respectively and has met
The steps such as identification condition → identification judgement, and the image gathered is corresponding with recognition mode: under recognition of face pattern, corresponding
Image is visible ray facial image；Under iris identification pattern, corresponding is near infrared eyes image.
And the scheme that the recognition of face of existing mobile terminal and iris identification combine, owing to the image of iris and face is adopted
Collection equipment is separate, can only gather near infrared light facial image simply, by its respectively with face database and iris
Image data base is compared, to complete recognition of face and iris identification.It is to be appreciated that face database is typically all base
In the facial image of visual light imaging, near infrared light facial image and visible ray facial image are compared and will certainly reduce knowledge
Other accuracy.In contrast, the recognition accuracy of this programme has and is obviously improved.
It addition, this programme by carrying out human eye detection to the face-image collected first, according to the image space of human eye
Automatically select the most optimal living things feature recognition pattern, and sequentially complete the body under recognition of face and iris identification both of which
Part certification.Specifically, if human eye is in visual light imaging region, then first carries out recognition of face and carry out iris identification again (such as method 100
Described), similarly, if detecting, human eye, near infrared imaging region, the most first carries out iris identification and carries out recognition of face again, as follows
Described in face method 400.By such re-authentication mode, it is possible to the shortcoming effectively evading single-mode identification, carry further
The high accuracy identified and reliability.
As shown in Figure 4, step S410, with step S110, gathers the face-image of user by compound imaging device.
The most in the step s 420, when detecting that human eye is positioned in the first area image of near infrared light imaging, such as Fig. 3
Shown in (b), i.e. enter iris identification pattern.
Subsequently in step S430, from the image of first area, location cuts out eyes image, and judges this eyes image
Whether meet iris identification condition.As described in step S170, in judge process, can first judge eyes image
It is pre-conditioned whether picture quality meets；Judge whether iris radius value and pupil of both eyes distance values meet iris identification the most again
Condition, if all meeting, carrying out iris identification, otherwise returning step S410 Resurvey first area image.
Subsequently in step S440, when meeting iris identification condition, from eyes image, extract iris feature to enter
Row iris identification.It should be noted that, Algorithm of Iris Recognition is not restricted by the present invention, any Algorithm of Iris Recognition can be with
Embodiments of the invention combine, and have completed iris identification step.
Subsequently in step S450, according to iris identification, this user of result preliminary judgement is the most legal.If registering
User's (iris data) storehouse in can match the iris feature of this user, then this user of preliminary judgement is legal, otherwise user
Illegal, terminate this authenticating user identification.
Similarly, after preliminary judgement user is legal, then user is carried out recognition of face, to reaffirm user identity
Legitimacy.
In step S460, if this user of preliminary judgement is validated user, then enter recognition of face pattern, by being combined into
The second area image (image as shown in Fig. 3 (a)) of human eye is comprised in the second area as equipment 200 obtains this user.Root
According to one embodiment of the present invention, the display screen of mobile terminal can show the image of shooting in real time, therefore by aobvious
On display screen curtain display adjustment signal just can guide user to be identified adjust face and compound imaging device angle or/and away from
From, until human eye being detected in second area image, i.e. shown in such as Fig. 3 (a) of imaging on imageing sensor 210.
Subsequently in step S470, it is judged that whether this second area image meets recognition of face condition.With step S130,
In judge process, extract the face key point in second area image, if judging collection from the face key point extracted
When face area key point number sufficiently large, that extract is abundant, it is considered as meeting recognition of face condition.
Alternatively, it is also possible to judge whether user's attitude meets face and gather requirement according to the key point extracted.As met
Face gathers requirement, then carry out recognition of face, if not meeting, returns step S460, Resurvey second area image.
Subsequently in step S480, if meeting recognition of face condition, then carry out according to the face characteristic of second area image
Recognition of face.It should be noted that, face recognition algorithms is not restricted by the present invention, any face recognition algorithms can be with this
Inventive embodiment combines, to complete recognition of face step.
Subsequently in step S490, again determining the legal identity of this user according to face recognition result, output result is also
Terminate this authenticating user identification.That is, if the face of this user can be matched in the most chartered user's face database
Feature, the most finally confirms that this user is legal.
In this programme, except described in method 100 and method 400, automatically determined by detection position of human eye and work as
Front recognition mode (and order of recognition mode) is outward, it is also possible to by user from the order of main separation recognition mode.
According to a kind of implementation, if user selects current recognition mode to be iris identification pattern, then by display screen
Display adjustment signal on curtain, guides user to adjust shooting angle or/and distance comprises human eye in the first region to gather user
First area image, as it is shown in figure 5, imaging region is divided into three parts by figure, be near infrared imaging district the most successively
Territory, transitional region, visual light imaging region.
It follows that the execution process with method 400 is the same, first first area image is performed determining under iris identification pattern
The steps such as position, judgement, iris identification, with preliminary judgement, this user is the most legal；If this user of preliminary judgement is validated user, then
Enter recognition of face pattern, then gather this user and comprise the second area image of human eye in the second area, and to this secondth district
Area image performs the step such as judgement, recognition of face, again to judge the legal identity of this user.
According to another kind of implementation, if user selects current recognition mode to be face recognition mode, then by display
Display adjustment signal on screen, guides user to adjust shooting angle or/and distance comprises people in the second area to gather user
The second area image of eye, as shown in Figure 6, is divided into imaging region three parts, is near infrared imaging the most successively in figure
Region, transitional region, visual light imaging region.
It follows that the execution process with method 100 is the same, first second area image is performed sentencing under face recognition mode
The steps such as disconnected, recognition of face, with preliminary judgement, this user is the most legal；If this user of preliminary judgement is validated user, then enter
Iris identification pattern, then gather this user and comprise the first area image of human eye in the first region, and to this first area figure
As performing the steps such as location, judgement, iris identification, again to judge the legal identity of this user.
Fig. 7 shows based on multi-biometric feature recognition according to an embodiment of the invention ID authentication device 700
Block diagram.This equipment 700 couples with compound imaging device 200 phase, is used for the method that performs 100 or method 400.
This ID authentication device 700 includes: receive unit 710, human eye detection unit 720, judging unit 730, location list
Unit 740, recognition unit 750 and authentication ' unit 760.
Receive unit 710 and be suitable to receive the face-image of the user to be identified gathered via compound imaging device 200.
Human eye detection unit 720 is suitable to carry out this face-image human eye detection, and transfers to judging unit 730 to sentence
Disconnected.
Judging unit 730 is suitable to judge whether there is human eye in this face-image.As it is shown on figure 3, detection face-image can
Following three kinds of situations can be there will be, respectively (a)-(c) in corresponding diagram 3:
1. such as Fig. 3 (a), human eye is positioned in the second area image of visual light imaging；
2. such as Fig. 3 (b), human eye is positioned in the first area image of near infrared light imaging；
3. such as Fig. 3 (c), human eye is neither in the image of first area, the most not in second area image.
If being all not detected by human eye in first area image and second area image, then by receive unit 710 receive by
The face-image of this user of compound imaging device 200 Resurvey；If human eye being detected in second area image, then enter
Recognition of face pattern；If human eye being detected in the image of first area, then enter iris identification pattern.
Under recognition of face pattern:
Judging unit 730 is further adapted for judging whether second area image meets recognition of face condition.According to the present invention one
Individual embodiment, it is judged that unit 730 includes: feature extraction subelement, statistics subelement and judgment sub-unit, wherein, feature extraction
Subelement is suitable to extract the face key point in second area image；Judgment sub-unit is suitable to the face key point judging to be extracted
In whether comprise specific key point；Statistics subelement is suitable to after judging to comprise specific key point, the face that statistics is extracted
Key point number；Judgment sub-unit is further adapted for judging whether this number meets recognition of face condition, if meeting, then according to extraction
Key point judges whether user's attitude meets face and gather requirement, as met, carries out recognition of face, otherwise Resurvey second
Area image.
Recognition unit 750 is suitable to when meeting recognition of face condition, carries out people according to the face characteristic of second area image
Face identification.
It is the most legal that authentication ' unit 760 is suitable to according to this user of face recognition result preliminary judgement, judge this user as
During validated user, enter iris identification pattern.
Under iris identification pattern:
Reception unit 710 is further adapted for receiving this user gathered by compound imaging device 200 and comprises people in the first region
The first area image of eye.
Positioning unit 740 is suitable to location from the image of first area and cuts out eyes image.
Judging unit 730 is transferred to judge to be positioned whether the eyes image obtained meets iris identification condition again.According to this
Invention an embodiment, it is judged that unit 730 except features described above extract subelement, statistics subelement and judgment sub-unit in addition to,
Also include computation subunit, be suitable to iris radius, the pupil of both eyes calculating in the image quality parameter of eyes image, eyes image
Spacing；Then judged whether its picture quality meets by judgment sub-unit pre-conditioned, and pre-judging that picture quality meets
If during condition, it is judged that whether iris radius value and pupil of both eyes distance values meet iris identification condition, if meeting iris identification bar
Part, then carry out iris identification, otherwise Resurvey first area image.
Recognition unit 750 is suitable to when meeting iris identification condition, extracts iris feature, carry out rainbow from this eyes image
Film identification.
The final legal identity again being determined this user by authentication ' unit 760 according to iris identification result.
Described in method 400, if human eye detection unit 720 detects human eye in the image of first area, then
Judging unit 730 judges to be introduced into iris identification pattern.Now, authentication ' unit 760 is suitable to tentatively sentence according to iris identification result
This user fixed is the most legal, if this user of preliminary judgement is validated user, then enters back into recognition of face pattern.Receive unit 710
It is further adapted under recognition of face pattern, receives and comprised in the second area by this user of compound imaging device 200 Resurvey
The second area image of human eye, and finally again determined that this user's is legal by authentication ' unit 760 according to face recognition result
Identity.
According to a kind of implementation, in addition to said units, this ID authentication device 700 can also include control unit
770, as shown in Figure 8.Need again to receive by the first area figure of compound imaging device 200 Resurvey when receiving unit 710
As or during second area image, control unit 770 is suitable to show that on the display screen of mobile terminal signal draws by controlling
Lead user to be identified and adjust the angle of face and compound imaging device 200 or/and distance, until detecting in the image of corresponding region
To human eye.
According to the embodiment of the present invention, except being automatically selected current identification by equipment 700 according to eyes imaging position
Outside pattern, it is also possible to received the user's current recognition mode from main separation by receiving unit 710.
Such as, if user selects current recognition mode to be iris identification pattern, control unit 770 is shown by control signal
Guide user to be identified to adjust face and the angle of compound imaging device and/or distance, meet iris identification mould to collect
The image that formula requires, as shown in Figure 5.Then, first under iris identification pattern, preliminary judgement is carried out, again under recognition of face pattern
Again determine user identity.
And for example, if user selects current recognition mode to be face recognition mode, control unit 770 is shown by control signal
Guide user to be identified to adjust face and the angle of compound imaging device and/or distance, meet recognition of face mould to collect
The image that formula requires, as shown in Figure 6.Then, first under recognition of face pattern, preliminary judgement user is carried out the most legal, again at rainbow
The legal identity of user is again determined under film recognition mode.
Should be appreciated that one or more, the most right in order to simplify that the disclosure helping understands in each inventive aspect
In the description of the exemplary embodiment of the present invention, each feature of the present invention be sometimes grouped together into single embodiment, figure or
In person's descriptions thereof.But, should not be construed to the method for the disclosure reflect an intention that the most required for protection is sent out
The bright feature more features requiring ratio to be expressly recited in each claim.More precisely, as the following claims
As book is reflected, inventive aspect is all features less than single embodiment disclosed above.Therefore, it then follows specifically real
The claims executing mode are thus expressly incorporated in this detailed description of the invention, and the most each claim itself is as this
Bright independent embodiment.
Those skilled in the art are to be understood that the module of the equipment in example disclosed herein or unit or group
Part can be arranged in equipment as depicted in this embodiment, or alternatively can be positioned at and the equipment in this example
In different one or more equipment.Module in aforementioned exemplary can be combined as a module or be segmented into multiple in addition
Submodule.
Those skilled in the art are appreciated that and can carry out the module in the equipment in embodiment adaptively
Change and they are arranged in one or more equipment different from this embodiment.Can be the module in embodiment or list
Unit or assembly are combined into a module or unit or assembly, and can put them in addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit excludes each other, can use any
Combine all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so disclosed appoint
Where method or all processes of equipment or unit are combined.Unless expressly stated otherwise, this specification (includes adjoint power
Profit requires, summary and accompanying drawing) disclosed in each feature can be carried out generation by providing identical, equivalent or the alternative features of similar purpose
Replace.
A6, method as according to any one of A1-5, also include user's step from the current recognition mode of main separation: if using
Family selects current recognition mode to be iris identification pattern, then by adjusting shooting angle or/and distance gathers user in the firstth district
Territory comprises the first area image of human eye；This first area image is performed location determination step, iris identification step, with just
Step judges that this user is the most legal；If this user of preliminary judgement is validated user, then enter recognition of face pattern；Gather this user
Comprise the second area image of human eye in the second area；And this second area image is performed described judgement step, face
Identification step, again to determine the legal identity of this user.A7, method as described in A6, wherein user currently knows from main separation
The step of other pattern also includes: if user selects current recognition mode to be face recognition mode, then by adjust shooting angle or/
Gather user with distance and comprise the second area image of human eye in the second area；Perform to judge step to this second area image
Suddenly, recognition of face step, with preliminary judgement, this user is the most legal；If this user of preliminary judgement is validated user, then enter rainbow
Film recognition mode；Gather this user and comprise the first area image of human eye in the first region；And to this first area image
Perform described location determination step, iris identification step, again to determine the legal identity of this user.
B12, equipment as according to any one of B8-11, also include: control unit, is suitable to show to come by control signal
User to be identified is guided to adjust the angle of face and compound imaging device or/and distance, until detecting in the image of corresponding region
To human eye.B13, equipment as according to any one of B8-12, wherein, receiving unit, to be further adapted for receiving user current from main separation
Recognition mode, wherein, if user selects current recognition mode to be iris identification pattern, then first carries out iris identification and tentatively sentences
Calmly, performing recognition of face again determines the legal identity of user again；If user selects current recognition mode to be face recognition mode,
Then first carry out recognition of face to carry out preliminary judgement, perform iris identification again and again determine the legal identity of user.B14, such as B13 institute
The equipment stated, wherein, control unit is further adapted for being shown by control signal and guides user to be identified adjust face and be combined into
As the angle of equipment, to collect the image meeting current recognition mode requirement.
Although additionally, it will be appreciated by those of skill in the art that embodiments more described herein include other embodiments
Some feature included by rather than further feature, but the combination of the feature of different embodiment means to be in the present invention's
Within the scope of and form different embodiments.Such as, in the following claims, embodiment required for protection appoint
One of meaning can mode use in any combination.
Additionally, some in described embodiment be described as at this can be by the processor of computer system or by performing
The method of other device enforcement of described function or the combination of method element.Therefore, have for implementing described method or method
The processor of the necessary instruction of element is formed for implementing the method or the device of method element.Additionally, device embodiment
This described element is the example of following device: this device is for implementing by performed by the element of the purpose in order to implement this invention
Function.
As used in this, unless specifically stated so, ordinal number " first ", " second ", " the 3rd " etc. is used
Describe plain objects and be merely representative of the different instances relating to similar object, and be not intended to imply that the object being so described must
Must have the time upper, spatially, sequence aspect or in any other manner to definite sequence.
Although the embodiment according to limited quantity describes the present invention, but benefits from above description, the art
In it is clear for the skilled person that in the scope of the present invention thus described, it can be envisaged that other embodiments.Additionally, it should be noted that
The language that uses in this specification primarily to the readable and purpose of teaching and select rather than in order to explain or limit
Determine subject of the present invention and select.Therefore, in the case of without departing from the scope of the appended claims and spirit, for this
For the those of ordinary skill of technical field, many modifications and changes will be apparent from.For the scope of the present invention, to this
The disclosure that invention is done is illustrative and not restrictive, and it is intended that the scope of the present invention be defined by the claims appended hereto.
Claims (10)
1. an identity identifying method, described method includes step:
Gathered the face-image of user to be identified by compound imaging device, wherein said compound imaging device is suitable to utilize subregion
Incident light source is divided into the light of two groups of two wave bands by the optical filter box of territory subrane, and on the region that imageing sensor is corresponding
Imaging respectively, obtains the first area image of near infrared light imaging and the second area image of visual light imaging；
Described face-image is carried out human eye detection, if being all not detected by described first area image and second area image
Human eye, the then face-image of this user of Resurvey；
If human eye being detected in second area image, then enter recognition of face pattern；
Judge whether this second area image meets recognition of face condition；
If meeting recognition of face condition, then carry out recognition of face according to the face characteristic in described second area image；
According to face recognition result preliminary judgement, this user is the most legal；
If this user of preliminary judgement is validated user, then enter iris identification pattern；
Obtain this user by described compound imaging device and comprise the first area image of human eye in the first region；
From the image of first area, location cuts out eyes image, and judges whether this eyes image meets iris identification condition；
If meeting iris identification condition, then from described eyes image, extract iris feature to carry out iris identification；And
The legal identity of this user is again determined according to iris identification result.
2. the method for claim 1, after the wherein said face-image to collecting carries out the step of human eye detection,
Further comprise the steps of:
If human eye being detected in the image of first area, then enter iris identification pattern；
From the image of described first area, location cuts out eyes image, and judges whether this eyes image meets iris identification bar
Part；
If meeting iris identification condition, then from described eyes image, extract iris feature to carry out iris identification；
According to iris identification, this user of result preliminary judgement is the most legal；
If this user of preliminary judgement is validated user, then enter recognition of face pattern；
Obtain this user by described compound imaging device and comprise the second area image of human eye in the second area；
Judge whether this second area image meets recognition of face condition；
If meeting recognition of face condition, then carry out recognition of face according to the face characteristic of described second area image；And
The legal identity of this user is again determined according to face recognition result.
3. method as claimed in claim 1 or 2, wherein, described judges whether second area image meets recognition of face condition
Step include:
Extract the face key point in second area image；
Judge whether the face key point extracted comprises specific key point；
If comprising specific key point, then add up the face key point number extracted, it is judged that whether this number meets recognition of face
Condition；
If meeting recognition of face condition, then judge whether user's attitude meets face and gather requirement according to the key point extracted, as
Meet, carry out recognition of face, if not meeting, Resurvey second area image.
4. the method as according to any one of claim 1-3, wherein, described judges whether eyes image meets iris identification bar
The step of part includes:
Calculate the image quality parameter of eyes image, it is judged that it is pre-conditioned whether its picture quality meets；
If meeting pre-conditioned, then calculate the iris radius in eyes image, pupil of both eyes spacing, with judge iris radius value and
Whether pupil of both eyes distance values meets iris identification condition；
If meeting iris identification condition, then carry out iris identification, otherwise Resurvey first area image.
5. the method as according to any one of claim 1-4, wherein obtains this user in the firstth district by compound imaging device
The step of the correspondence image comprising human eye in territory or second area includes:
User to be identified is guided to adjust the angle of face and compound imaging device or/and distance by display adjustment signal, until
Human eye is detected in the image of corresponding region.
6. an ID authentication device, this ID authentication device couples mutually with compound imaging device, described ID authentication device bag
Include:
Receive unit, be suitable to receive the face-image of the user to be identified via compound imaging device collection and in iris identification
Under pattern, receive this user gathered by compound imaging device and comprise the first area image of human eye in the first region,
Wherein, described compound imaging device is suitable to the optical filter box utilizing subregion subrane incident light source is divided into two group two
The light of individual wave band, and imaging respectively on the region that imageing sensor is corresponding, obtain the first area image of near infrared light imaging
Second area image with visual light imaging；
Human eye detection unit, is suitable to described face-image is carried out human eye detection；
Judging unit, is suitable to judge whether there is human eye in described face-image, wherein,
If being all not detected by human eye in described first area image and second area image, then by described reception unit receive by
The face-image of this user of compound imaging device Resurvey,
If human eye being detected in second area image, then enter recognition of face pattern；
Positioning unit, is suitable under iris identification pattern, and from the image of described first area, location cuts out eyes image；
Described judging unit is further adapted for judging whether second area image meets recognition of face condition and judge to be positioned to obtain
Eyes image whether meet iris identification condition；
Recognition unit, is suitable to when meeting recognition of face condition, carries out face according to the face characteristic of described second area image
Identify and when meeting iris identification condition, from described eyes image, extract iris feature to carry out iris identification；And
Authentication ' unit, it is the most legal to be suitable to according to this user of face recognition result preliminary judgement, is judging that this user is as legal use
During family, enter iris identification pattern and be further adapted for again determining according to iris identification result the legal identity of this user.
7. equipment as claimed in claim 6, wherein,
Described judging unit is further adapted for, when human eye being detected through described human eye detection unit in the image of first area, being introduced into
Iris identification pattern；
It is the most legal that described authentication ' unit is further adapted for according to iris identification this user of result preliminary judgement, if this user of preliminary judgement
For validated user, then enter recognition of face pattern；
Described reception unit is further adapted under recognition of face pattern, receives by this user of compound imaging device Resurvey the
Two regions comprise the second area image of human eye；And
Described authentication ' unit is further adapted for again determining the legal identity of this user according to face recognition result.
Equipment the most as claimed in claims 6 or 7, wherein said judging unit includes:
Feature extraction subelement, is suitable to extract the face key point in second area image；
Judgment sub-unit, is suitable to whether comprise specific key point in the face key point judging to be extracted；
Statistics subelement, is suitable to after judging to comprise specific key point, the face key point number that statistics is extracted；
Described judgment sub-unit is further adapted for judging whether this number meets recognition of face condition, if meeting, then according to the pass extracted
Key point judges whether user's attitude meets face and gather requirement, as met, carries out recognition of face, otherwise Resurvey the secondth district
Area image.
9. the equipment as according to any one of claim 6-8, wherein, described judging unit also includes:
Computation subunit, is suitable between the iris radius in the calculating image quality parameter of eyes image, eyes image, pupil of both eyes
Away from；
It is pre-conditioned that described judgment sub-unit is further adapted for judging whether its picture quality meets, and be further adapted for meet pre-conditioned
Time, it is judged that whether iris radius value and pupil of both eyes distance values meet iris identification condition, if meeting iris identification condition, then enter
Row iris identification, otherwise Resurvey first area image.
10. a mobile terminal, including:
ID authentication device as according to any one of claim 6-9；And
Compound imaging device, couples mutually with described ID authentication device, including:
Lens assembly, including the optical lens of fixed focal length；
Optical filter box, including the visible band pass filter allowing the light of visible light wave range to pass through and permission near infrared light wave band
The near infrared light bandpass region passed through；And
Imageing sensor, including the transition region between visual light imaging region, near infrared light imaging region and the two region
Territory,
Wherein, described visual light imaging region under described visual light imaging pattern to by described visible band pass filter
Visible ray carries out imaging, and described near infrared light imaging region under described near infrared light imaging pattern to by described the reddest
The near infrared light of outer smooth bandpass filter carries out imaging.
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