CN209168110U - Identification authentication device and electronic equipment - Google Patents
Identification authentication device and electronic equipment Download PDFInfo
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- CN209168110U CN209168110U CN201820557745.1U CN201820557745U CN209168110U CN 209168110 U CN209168110 U CN 209168110U CN 201820557745 U CN201820557745 U CN 201820557745U CN 209168110 U CN209168110 U CN 209168110U
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Abstract
This application discloses a kind of identification authentication device and electronic equipments.The identification authentication device includes: first projector, for projecting infrared floodlight to an object under test；Second projector, for projecting infrared structure light to the object under test；Image sensing device, for capturing by the reflected infrared floodlight of the object under test, sense the first infrared image of the object under test, and the second infrared image for capturing by the reflected infrared structure light of the object under test, sensing the object under test；And processor, for confirming whether the identity of the object under test is legal according to first infrared image and the second infrared image.The electronic equipment includes the identification authentication device.
Description
Technical field
This application involves a kind of identification authentication device and electronic equipments.
Background technique
With the development of science and technology, more and more occasions start to identify object using various sensing technologies.For example,
Fingerprint identification technology, iris recognition technology etc..So, fingerprint identification technology and iris recognition technology etc. have its respective limitation
Property, for example, fingerprint identification technology not can be carried out longer-distance sensing, the sensing response speed of iris recognition technology is slower
Deng.
Therefore, it is necessary to provide a kind of novel sensing technology, it to be used for identification authentication.
Summary of the invention
The application embodiment aims to solve at least one of the technical problems existing in the prior art.For this purpose, the application is real
The mode of applying needs to provide a kind of identification authentication device and electronic equipment.
Firstly, the application provides a kind of identification authentication device, comprising:
First projector, for projecting infrared floodlight to an object under test；
Second projector, for projecting infrared structure light to the object under test；
Image sensing device, for capturing by the reflected infrared floodlight of the object under test, sensing the object under test
First infrared image, and for capturing by the reflected infrared structure light of the object under test, sensing the of the object under test
Two infrared images；
Processor, for confirming that the identity of the object under test is according to first infrared image and the second infrared image
It is no legal.
In presently filed embodiment, the identification authentication device is by way of optical image sensing to the object under test
Identity authenticated.Wherein, which can obtain the 2D attribute information of the object under test according to first infrared image,
The 3D attribute information of the object under test can be obtained according to second infrared image, thus, according to first infrared image and it is somebody's turn to do
Second infrared image is able to confirm that whether the identity of the object under test is legal.It can be seen that this application provides a kind of novel
Optical sensing technology authenticates to realize.
In addition, the optical sensing technology is applicable to longer-distance sensing, and it is very fast to sense response speed.It is described farther out
Distance for example, 1 meter within the scope of or even more farther distance.
In some embodiments, the wave-length coverage of the infrared floodlight is [925,955] nanometer, and/or, it is described infrared
The wave-length coverage of structure light is [925,955] nanometer.
In some embodiments, the wavelength of the infrared floodlight be 940 nanometers or/and, the wave of the infrared structure light
A length of 940 nanometers.
In some embodiments, when carrying out identification authentication, the control circuit is for controlling first projector, the
Two projectors and the image sensing device cooperate.
In some embodiments, which further comprises high-speed data transfer link, for image
The signal of first infrared image is indicated in sensing device and indicates that the signal of second infrared image is transmitted in the processor
It is handled.
In some embodiments, the identification authentication device further comprises control circuit, and the control circuit is used for
Control first projector and second projector time-sharing work.
In some embodiments, which further comprises memory, and the memory is for prestoring one
Or the two-dimensional image information of multiple sample objects.
In some embodiments, when carrying out identification authentication, the control circuit control first projector prior to
Second projector work, the processor are used to compare the X-Y scheme of the object under test according to first infrared image
As whether the two-dimensional image information prestored in information and the memory matches, when confirm the two-dimensional image information of the object under test with
When the two-dimensional image information matching prestored, the processor judges that the object under test is then according to second infrared image
No is three-dimensional object, otherwise, when the processor confirms the two-dimensional image information of the object under test and the two-dimensional image information prestored
When mismatch, then identification authentication fails.
In some embodiments, when it is three-dimensional object that processor judgement, which learns the object under test not, then identity is reflected
Power failure.
In some embodiments, when the processor judges to learn the object under test as three-dimensional object, then identification authentication
Success.
In some embodiments, the processor is in the two-dimensional image information for comparing the object under test and the X-Y scheme prestored
Whether while matching as information: the control circuit controls second projector and projects infrared structure light to the determinand
Body, the second infrared image of the described image sensing device senses object under test；Or, when the processor is comparing the determinand
Before whether the two-dimensional image information of body matches with the two-dimensional image information prestored: the control circuit control control described first
The projector is closed, and second projector of control is opened, the second infrared image of the described image sensing device senses object under test.
In some embodiments, when carrying out identification authentication, the control circuit control second projector prior to
First projector work, the processor is for judging whether the object under test is vertical according to second infrared image
Body object, when judging to learn the object under test as three-dimensional object, the processor comes then according to first infrared image
Whether the two-dimensional image information for comparing the object under test matches with the two-dimensional image information prestored.
In some embodiments, when the processor confirms the two-dimensional image information of the object under test and the X-Y scheme prestored
When mismatching as information, then identification authentication fails.
In some embodiments, when the processor confirms the two-dimensional image information of the object under test and the two dimension prestored
When image information matches, then identification authentication success.
In some embodiments, whether the processor is while judging the object under test is three-dimensional object: described
Control circuit controls first projector and projects infrared floodlight to the object under test, this is to be measured for described image sensing device senses
First infrared image of object；Or, when the processor is before judging whether the object under test be three-dimensional object: the control
Second projector described in circuit control is closed, and first projector of control is opened, the described image sensing device senses object under test
The first infrared image.
In some embodiments, when carrying out identification authentication, the control circuit control first projector prior to
Second projector work, the processor are used to compare the X-Y scheme of the object under test according to first infrared image
As whether information matches with the two-dimensional image information prestored, when the two-dimensional image information and the two dimension prestored for confirming the object under test
When image information mismatches, then identification authentication fails, when the two-dimensional image information for confirming the object under test and the X-Y scheme prestored
When as information matches, the control circuit then controls the closing of first projector, and second projector of control is opened, and described image passes
Induction device senses the second infrared image of the object under test；The processor judges this then according to second infrared image
Whether object under test is three-dimensional object.
In some embodiments, when to learn the object under test not be three-dimensional object for processor judgement, then identity
Failed authentication.
In some embodiments, when the processor judges to learn the object under test as three-dimensional object, then identity is reflected
It weighs successfully.
In some embodiments, when carrying out identification authentication, the control circuit control first projector prior to
Second projector work, and after obtaining the first infrared image and the second infrared image respectively, the processor is used for root
Judge whether the object under test is three-dimensional object according to second infrared image, it is three-dimensional for learning the object under test not when judgement
When object, then identification authentication fails, when judgement learns that the object under test is three-dimensional object, then further according to the first infrared figure
Whether picture, the two-dimensional image information for comparing the object under test match with the two-dimensional image information prestored.
In some embodiments, when the processor confirms the two-dimensional image information of the object under test and the X-Y scheme prestored
When mismatching as information, then identification authentication fails.
In some embodiments, when the processor confirms the two-dimensional image information of the object under test and the X-Y scheme prestored
When as information matches, then identification authentication success.
In some embodiments, when carrying out identification authentication, the control circuit control second projector prior to
First projector work, the processor is for judging whether the object under test is vertical according to second infrared image
Body object, when it is three-dimensional object that judgement, which learns the object under test not, then identification authentication fails, when the object under test is learnt in judgement
When for three-dimensional object, the control circuit then controls the closing of second projector, and first projector of control is opened, and described image passes
Induction device senses the first infrared image of the object under test；The processor compares this then according to first infrared image
Whether the two-dimensional image information of object under test matches with the two-dimensional image information prestored.
In some embodiments, when the processor confirms the two-dimensional image information of the object under test and the two dimension prestored
When image information mismatches, then identification authentication fails.
In some embodiments, when the processor confirms the two-dimensional image information of the object under test and the two dimension prestored
When image information matches, then identification authentication success.
In some embodiments, when carrying out identification authentication, the control circuit control second projector prior to
First projector work, and after obtaining the second infrared image and the first infrared image respectively, the processor is used for root
According to the first infrared image of acquisition, compare the object under test two-dimensional image information and the two-dimensional image information prestored whether
Match, if it is confirmed that the two-dimensional image information of the object under test is mismatched with the two-dimensional image information prestored, then identification authentication fails,
If it is confirmed that the two-dimensional image information of the object under test is matched with the two-dimensional image information prestored, then it is red further according to the second of acquisition
Outer image judges whether the object under test is three-dimensional object.
In some embodiments, when it is three-dimensional object that processor judgement, which learns the object under test not, then identity is reflected
Power failure.
In some embodiments, when processor judgement learns that the object under test is three-dimensional object, then identification authentication
Success.
In some embodiments, the two-dimensional image information prestored includes the two-dimensional image information of object face.
In some embodiments, the two-dimensional image information prestored is the two-dimensional image information of human body face.
In some embodiments, which judges whether the object under test is stereoscopic article according to second infrared image
Body.
In some embodiments, when the processor confirms the two-dimensional image information of the object under test and the human body face prestored
The two-dimensional image information in portion matches, and when judging to learn the object under test as three-dimensional object, then confirms the identity of the object under test
It is legal, identification authentication success.
In some embodiments, the two-dimensional image information prestored includes face feature information, the processor into
One step is extracted for the face feature informations of measuring targets, by comparing the face feature information extracted and prestoring
Face feature information, to confirm whether the two-dimensional image information of the object under test matches with the two-dimensional image information prestored.
In some embodiments, the processor is further used for carrying out stereoscopic features information to second infrared image
Extraction, and judge whether the object under test is three-dimensional object according to the stereoscopic features information extracted.
The application also provides a kind of electronic equipment, including the identification authentication device described in any one of above-mentioned.
In some embodiments, the electronic equipment be used for according to the identification authentication result of the identification authentication device come
Whether correspondence executes corresponding function.
In some embodiments, corresponding function includes unlocking, paying, starting appointing in preset application program
Meaning is one or more of.
In some embodiments, the electronic equipment includes consumer electrical product, household formula electronic product, vehicular
Any one or a few in electronic product, financial terminal product.
Since the electronic equipment of the application includes above-mentioned identification authentication device, which can be realized pair
The longer-distance sensing of object under test, and it is very fast to sense response speed.
The additional aspect and advantage of the application embodiment will be set forth in part in the description, partially will be from following
Become obvious in description, or is recognized by the practice of the application embodiment.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the application embodiment retouch embodiment from conjunction with following accompanying drawings
It will be apparent and be readily appreciated that in stating, in which:
Fig. 1 is the structural block diagram of one embodiment of identification authentication device of the application.
Fig. 2 is the relation schematic diagram between the radiation intensity and wavelength of environment light.
Fig. 3 is the structural schematic diagram of one embodiment of electronic equipment of the application.
Specific embodiment
Presently filed embodiment is described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the application, and should not be understood as the limitation to the application.
In the description of the present application, it is to be understood that term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more feature.In the description of the present application
In, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected or can be in communication with each other；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements or the interaction relationship of two elements.For the ordinary skill of this field
For personnel, the concrete meaning of above-mentioned term in this application can be understood as the case may be.
Following disclosure provides many different embodiments or example is used to realize the different structure of the application.In order to
Simplify disclosure herein, hereinafter to the component of specific examples and being set for describing.Certainly, they are merely examples, and
And purpose does not lie in limitation the application.In addition, the application can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.
Further, described feature, structure can be incorporated in one or more embodiment party in any suitable manner
In formula.In the following description, many details are provided to provide and fully understand to presently filed embodiment.So
And one of ordinary skill in the art would recognize that, without one or more in the specific detail, or using other structures,
Constituent element etc. can also practice the technical solution of the application.In other cases, it is not shown in detail or describes known features or behaviour
Make to avoid fuzzy the application.
Referring to Fig. 1, Fig. 1 is the structural block diagram of an embodiment of the identification authentication device of the application.The identification authentication
Device 1 includes first projector 10, second projector 12, image sensing device 14 and processor 16.Wherein, first projection
Device 10 is for projecting infrared floodlight to an object under test.Second projector 12 is for projecting infrared structure light to the determinand
Body.The image sensing device 14 is for capturing by the reflected infrared floodlight of the object under test, according to the infrared floodlight of capture
Sensing obtains the first infrared image of the object under test, and for capturing by the reflected infrared structure of the object under test
Light, the second infrared image that the object under test is obtained according to the infrared structure light sensing of capture.The processor 16 is used for basis should
First infrared image and the second infrared image confirm whether the identity of the object under test is legal.
When carrying out identification authentication, the identification authentication device 1 is to be measured to this by projecting infrared floodlight and infrared structure light
On object, the different infrared images of the object under test are obtained respectively, to realize sensing and the identification to the object under test.Wherein,
Two dimension (2-Dimension, 2D) image information that the object under test can be obtained according to first infrared image, according to this second
Infrared image can obtain three-dimensional (3-Dimension, 3D) image information of the object under test, the 3D rendering information for example including
Depth information.To confirm whether the identity of the object under test is legal with 3D rendering information according to the 2D image information.
As shown in the above, this application provides a kind of novel optical profile type identification authentication devices.
Further, due to the optical characteristics of infrared floodlight and infrared structure light, the optical sensing technology be applicable to compared with
Sensing at a distance, and it is very fast to sense response speed.It is described relatively it is remote be, for example, within the scope of 1 meter or it is even more farther away from
From.
Optionally, the identification authentication device 1 further comprises control circuit 17.The control circuit 17 and first projection
Device 10 and the connection of second projector 12, for controlling first projector 10, second projector 12 and image sensing dress
Set 14 collaborative works.
In the present embodiment, when carrying out identification authentication, the control circuit 17 controls first projector 10 and should
Second projector, 12 time-sharing work.Specifically, which controls first projector 10 prior to second projection
Device 12 works, and works or, the control circuit 17 controls second projector 12 prior to first projector 10.
First projector 10 is such as, but not limited to infrared floodlight.
Second projector 12 projects infrared structure light for example, by using optical module to the object under test.The optics
Component is for example including light source, collimation camera lens and diffractive-optical element (DOE), and wherein light source is for generating an infrared laser beam；
Collimation camera lens calibrates infrared laser beam, forms less parallel light；Diffractive-optical element is to the infrared laser beam after calibration
It is modulated, forms corresponding speckle pattern.The speckle pattern is such as, but not limited to include regular dot matrix, striped formula, net
One or more of format, speckle formula, coding type etc..Wherein, speckle formula is also known as random dot matrix.Coding type pattern is for example
It is made of the light of different wave, a kind of number of every kind of waveforms stands, the combination of each waveform is to encode.In addition, the optics group
Part can also be for example made of other suitable optical elements.
It is above-mentioned be using based on pumped FIR laser principle, second projector 12 project known infrared structure light pattern to this to
It surveys on object.Image sensing device 14 or processor 16 analyze determining be somebody's turn to do according to the infrared structure light pattern of the deformation captured
The depth information of object under test.Defining such infrared structure light is space structure light.
Ground is changed, such as can also be used based on flight time (Time of Flight, ToF) principle, second projection
Device 12 projects infrared structure light to the object under test.Image sensing device 14 or processor 16 are for example by between measurement light pulse
Propagation delay time calculate the depth information of object under test.Defining such infrared structure light is time structure light.
The time structure light be such as, but not limited to be in sine wave, any one or two kinds in square wave combination.
When second projector 12 projection be space structure light when, the image sensing device 14 is for example including an infrared figure
As sensor 141, which is captured for timesharing by the reflected infrared floodlight of the object under test and red
External structure light.Due to sharing same infrared image sensor 141, so as to reduce cost.
However, when second projector 12 projection be time structure light when, the image sensing device 14 is for example including two
The structure of infrared image sensor, two infrared image sensor is different, and sensing principle is different, resolution ratio difference etc..Wherein, one
Infrared image sensor is for capturing by the reflected infrared floodlight of the object under test, and another infrared image sensor is for catching
It obtains by the reflected infrared structure light of the object under test.
The object under test is, for example, the face of human body.Correspondingly, the identification authentication device 1 of the application face for identification.
So, the application is not limited thereto, which for example can also be other proper sites of human body, even other suitable
Organism or inorganic matter etc..
Existing, industry usually projects the near infrared light that wavelength is 850 nanometers, to obtain the infrared image of object under test.
However, present inventor passes through a large amount of creative work, analysis is found with research: projection wavelength is 940 nanometers red
Outer floodlight, 940 nanometers of infrared structure light are sensed, and accurate sensing effect can be obtained.
Referring to Figure 2 together, Fig. 2 is the relation schematic diagram between the radiation intensity and wavelength of environment light.Wherein, wavelength is used
Horizontal axis indicates, and is denoted as alphabetical λ, and radiation intensity is indicated with the longitudinal axis, and is denoted as letter e.Inventor is ground by theory
Study carefully, test, verify and be repeated analysis and research etc. in conjunction with a large amount of experiment, creatively finds: environment light medium wavelength model
Enclose for [920,960] nanometer near infrared light easily by Atmospheric Absorption, strength retrogression it is larger, when first projector 10 project wavelength
Range is that the infrared floodlight of [920,960] nanometer is obtained to object under test, the image sensing device 14 according to the infrared floodlight of capture
When obtaining the first infrared image of the object under test, it can be disturbed by ambient light less, to improve the acquisition precision of image.It is similar
Ground, when the infrared structure light that second projector 12 projection wave-length coverage is [920,960] nanometer is passed to object under test, the image
When induction device 14 obtains the second infrared image of the object under test according to the infrared structure light of capture, it can lack and be done by environment light
It disturbs, to improve the acquisition precision of image.
It further, is the near infrared light that in the infrared light of [920,960] nanometer, wavelength is 940 nanometers in wave-length coverage
It is easier to by Atmospheric Absorption, strength retrogression's maximum, therefore, in presently filed embodiment, which is projected red
The wavelength of outer floodlight is preferably 940 nanometers, and the wavelength of the infrared structure light of second projector 12 projection is preferably 940 nanometers.
However, in practical applications, the wavelength and second projector of the red general outer light which is projected
The wavelength of the 12 infrared structure light projected has certain deviation on the basis of 940 nanometers, for example, have (+15) nanometer or
The deviation of (- 15) ran.Therefore, the wave-length coverage for the infrared floodlight which is projected be, for example, [925,
955] nanometer, the wave-length coverage for the infrared structure light which is projected are, for example, [925,955] nanometer.As it can be seen that
The wave-length coverage [925,955] is still fallen in wave-length coverage [920,960].
It should be noted that the wavelength for the infrared floodlight that first projector 10 is projected and second projector 12 are thrown
The wavelength for the infrared structure light penetrated is any one numerical value fallen in above-mentioned wave-length coverage [920,960] nanometer.The application in order to
Narration is succinct clear, does not enumerate each specific value here, but falls in appointing in this wave-length coverage [920,960] nanometer
A numerical value of anticipating all is feasible.
Certainly, change ground, first projector 10 and second projector 12 can also project respectively wavelength be 850 nanometers or
Infrared floodlight, the infrared structure light of the other suitable wavelengths of person.
What it is due to the projection of first projector 10 is infrared floodlight, and the projection of second projector 12 is infrared structure light, in order to
Aliasing, therefore, the control occur for the first infrared image and the second infrared image for avoiding the sensing of image sensing device 14 from obtaining
Circuit 17 controls 12 time-sharing work of first projector 10 and second projector.
In some embodiments, the identification authentication device 1 further comprises memory 18.The memory 18 is for pre-
Deposit the two-dimensional image information of one or more sample objects.The two-dimensional image information of the sample object is, for example, that user registers in advance
Successful face template information.
For example, the control circuit 17 controls first projector 10 prior to second projector 12 when carrying out identification authentication
Work.Correspondingly, described image sensing device 14 first senses first infrared image.The processor 16 is red according to described first
Outer image compares whether the two-dimensional image information of the object under test matches with the two-dimensional image information prestored, when confirming that this is to be measured
When the two-dimensional image information of object is matched with the two-dimensional image information prestored, the processor 16 is infrared then according to described second
Image judges whether the object under test is three-dimensional object, otherwise, when confirming the two-dimensional image information of the object under test and prestore
Two-dimensional image information mismatch when, then identification authentication fail.
When it is three-dimensional object that the processor 16 judgement, which learns the object under test not, then identification authentication fails.
As shown in the above, the processor 16 is by comparing the two-dimensional image information of the object under test and the two dimension prestored
Whether image information matches, obstructed out-of-date when identifying for the first time to carry out first time identification to the object under test, then identification authentication
Failure, process terminate.
It is illustrated by taking recognition of face as an example, before carrying out face recognition, user has registered the face of he or she in advance
Portion's image template, and be stored in the memory 18.Wherein, which includes two-dimensional image information.When execution face
When portion identifies, be exactly to the identification of first time of the object under test: compare the object under test two-dimensional image information whether with infused
The two-dimensional image information matching of volume user face, if it is determined that learning two-dimensional image information and user face of the object under test
Two-dimensional image information mismatch, then identification authentication fail.
If it is confirmed that the two-dimensional image information of the object under test is matched with the two-dimensional image information of the user face, then also not
It can determine that the object under test is exactly legitimate user, reason is that because being the judgement and identification to two-dimensional image information, if utilized
The photo of the user can equally identify success.
Next, the processor 16 by according to the second infrared image judge the object under test whether three-dimensional object, to keep away
Exempt from above-mentioned the case where being identified by using photo etc..
In some specific embodiments, which for example can obtain depth letter according to second infrared image
Breath, to judge whether the object under test is three-dimensional object according to depth information.
If the processor 16 judges that learning the object under test not is three-dimensional object, identification authentication failure, process knot
Beam.In this case, it is possible to be that other people utilize the progress identification such as the photo of legitimate user or video.
Optionally, when the processor 16 judgement learns that the object under test is three-dimensional object, then confirm the object under test
Identity is legal, identification authentication success.
When carrying out second of identification to the object under test, since the processor 16 only judges that the object under test is
Three-dimensional object carries out a large amount of analysis without the stereo image information to the object under test and calculates, so as to drop
Low-power consumption reduces the sensing time and reduces cost.
Specifically, for example, when the processor 16 confirms two-dimensional image information and the registered users face of the object under test
Two-dimensional image information matching factor be greater than or equal to a predetermined threshold when, then can confirm the object under test two dimensional image letter
Breath is matched with the two-dimensional image information of registered users face.Relatively, if it is confirmed that when matching factor is less than the predetermined threshold,
The two-dimensional image information of the two-dimensional image information and registered users face that can then confirm the object under test mismatches.
In the above-described embodiment, which controls first projector 10 prior to second projector, 12 work
Make.
Optionally, the processor 16 is in the two-dimensional image information for comparing the object under test and the two-dimensional image information prestored
Whether while matching: the control circuit 17 controls second projector 12 and projects infrared structure light to the object under test,
Second infrared image of the sensing of described image sensing device 14 object under test.It so, it is possible further to reduce the sensing time,
Promote working efficiency.
Or, ground is changed, when the processor 16 is in the two-dimensional image information and the two dimension prestored for comparing the object under test
Before whether image information matches: the control of control circuit 17 controls first projector 10 and closes, the second projection of control
Device 12 is opened, and described image sensing device 14 senses the second infrared image of the object under test.That is, the processor 16 is in the image
Sensing device 14 successively obtains first infrared image and second infrared image and then starts to execute to two-dimensional image information
It is compared.
In addition, change ground, in other embodiments, the control circuit 17 also can control second projector 12 prior to
The work of first projector 10, and in the image sensing device 14, successively sensing obtains second infrared image and this is first infrared
After image, which starts to execute the comparison work of two-dimensional image information again.
Ground is changed again, in some embodiments, when the processor 16 confirms the two-dimensional image information of the object under test
When matching with the two-dimensional image information prestored, which starts to control second projector 12 unlatching, the image sensing
Second infrared image of the acquisition of device 14 object under test.The processor 16 judges the determinand further according to second infrared image
Whether body is three-dimensional object.
In the above-described embodiment, by taking face recognition as an example, the two-dimensional image information prestored be include object face
Two-dimensional image information.
Correspondingly, about the comparison of two-dimensional image information, for example, the processor 16 can be by comparing the object under test
The plane picture of plane picture and the object face prestored is realized.
However, present applicant proposes another implementations compared for two-dimensional image information.The two dimension prestored
Image information includes face feature information.The processor 16 further comprises carrying out face feature information to the object under test to mention
It takes, by the face feature information for comparing the face feature information extracted with prestoring, to confirm the X-Y scheme of the object under test
As whether information matches with the two-dimensional image information prestored.To relative to comparing for picture in its entirety, by comparing feature
Mode can be further reduced calculation amount, improve sensing efficiency.
In one example, the processor 16 extracts the face feature information of the object under test by deep learning method.
The deep learning method includes: to establish depth convolutional neural networks model, uses the human face photo training of the predetermined quantity depth
Convolutional neural networks model, according to the characteristic parameter of the trained depth convolutional neural networks model extraction face.
Change ground, in other embodiments, the processor 16 also can extract nose, eyes, mouth, eyebrow, forehead,
Cheekbone, chin, face, the width of nose, chin the facial characteristics such as width, or/and, nose, eyes, mouth, eyebrow, volume
The range information of any combination in head, cheekbone, chin etc..For example, the distance between nose and eyes information.Certainly, the face
Portion's characteristic information is not limited to example listed above, can also be other suitable characteristic informations.
The application is not limited to the alignments of related two-dimensional image information above, can also suitably compare other side to be other
Formula.
Further, which is also used to carry out second infrared image extraction of stereoscopic features information, and root
Judge whether the object under test is three-dimensional object according to the stereoscopic features information extracted.
In one example, the stereoscopic face characteristic information of the object under test is extracted by deep learning method.The depth
Learning method includes: to establish depth convolutional neural networks model, uses the human face photo training of the predetermined quantity depth convolutional Neural
Network model, according to the characteristic parameter of the trained depth convolutional neural networks model extraction face.
Change ground, in other embodiments, the processor 16 also can extract nose, eyes, mouth, eyebrow, forehead,
Any one or a few three-dimensional size information in the facial characteristics such as cheekbone, chin, face.The three-dimensional size information is
Depth information.Certainly, the stereoscopic features information is not limited to example listed above, can also be other suitable features
Information.
So, the application is not limited to the judgment mode of above-mentioned three-dimensional object, for example, ground is changed, in other embodiment
In, stereo image information can also be constructed, and be compared with the stereo image information prestored according to the second infrared image,
To judge that the object under test is three-dimensional object.
As shown in the above, the identification authentication device 1 of above embodiment can save sensing the time, save power consumption,
And cost can be reduced.
So, change ground, in some embodiments, which is also used to: when confirmation, the object under test is three-dimensional
After object, further judge whether the steric information of the object under test meets the facial stereo feature of human body.
When the processor 16 judgement learns that the steric information of the object under test does not meet the facial stereo feature of human body, then
Identification authentication failure.
Optionally, when the processor 16 confirms the two-dimensional image information of the object under test and the two-dimensional image information prestored
When matching, and judging to learn that the steric information of the object under test meets the facial stereo feature of human body, then identification authentication success.
In other some embodiments, when carrying out identification authentication, the control circuit 17 controls described second and throws
Emitter 12 works prior to first projector 10, the processor 16 for judged according to second infrared image this to
Survey whether object is three-dimensional object, when judging to learn the object under test as three-dimensional object, the processor 16 is then according to institute
The first infrared image is stated to compare whether the two-dimensional image information of the object under test matches with the two-dimensional image information prestored.
When the processor 16 confirms that the two-dimensional image information of the object under test is mismatched with the two-dimensional image information prestored
When, then identification authentication fails.
Since the processor 16 is executed to whether the object under test is that the power consumption of consumption needed for the judgement of three-dimensional object wants small
Therefore it is to the object under test when the processor 16 is first carried out in executing the power consumption for comparing required consumption to two-dimensional image information
The no judgement for three-dimensional object, and when it is three-dimensional object that judgement, which learns the object under test not, terminate identification authentication, correspondingly,
The power consumption consumption of the identification authentication device 1 opposite will become smaller.
Optionally, when the processor 16 confirms the two-dimensional image information of the object under test and the two-dimensional image information prestored
When matching, then identification authentication success.
Optionally, whether the processor 16 is while judging the object under test is three-dimensional object: the control circuit
17 control first projectors 10 project infrared floodlight to the object under test, and described image sensing device 14 senses the determinand
First infrared image of body.In this way, saving the sensing time.
Or, when the processor 16 is before judge whether the object under test be three-dimensional object: the control of control circuit 17
System controls second projector 12 and closes, and first projector 10 of control is opened, and successively sensing obtains described image sensing device 14
Obtain the second infrared image and the first infrared image of the object under test.
In addition, changing ground, the control circuit 17 can also first control first projector 10 prior to second projector
12 work, after the image sensing device 14 successively obtains first infrared image and the second infrared image, the processor 16
Start to execute again to the object under test whether be three-dimensional object judgement.
Ground is changed again, in some embodiments, when the processor 16 judges to learn the object under test as three-dimensional object
When, which controls first projector 10 and opens, and correspondingly, which senses the object under test
The first infrared image.Then, which compares the two dimension of the object under test further according to first infrared image of acquisition
Whether image information matches with the two-dimensional image information prestored.
Optionally, which further comprises high-speed data transfer link 19, for image sensing device
It indicates that the signal of the signal and expression of first infrared image second infrared image is transmitted in the processor 16 in 14 to carry out
Processing.The high-speed data transfer link 19 is, for example, Mobile Industry Processor Interface (Mobile Industry Processor
Interface, MIPI).
Referring to Fig. 3, Fig. 3 is the structural schematic diagram of an embodiment of the electronic equipment of the application.The electronic equipment
100 be such as, but not limited to consumer electrical product, household formula electronic product, vehicular electronic product, financial terminal product
Etc. suitable types electronic product.Wherein, consumer electrical product for example but be not limited to mobile phone, tablet computer, notebook electricity
Brain, tabletop display, computer all-in-one machine etc..Household formula electronic product for example but is not limited to intelligent door lock, TV, refrigerator, wears
Wear formula equipment etc..Vehicular electronic product for example but is not limited to automatic navigator, vehicle-carrying DVD etc..Financial terminal product is for example
But be not limited to ATM machine, the terminal of self-service transacting business etc..The electronic equipment 100 includes above-mentioned identification authentication device 1.Institute
It states electronic equipment 100 and whether corresponding function is executed to correspond to according to the identification authentication result of the identification authentication device 1.It is described
Corresponding function is such as, but not limited to include unlocking, paying, starting any one or a few in preset application program.
In the present embodiment, it is illustrated so that electronic equipment is mobile phone as an example.The hand that the mobile phone for example, shields comprehensively
The positive top of mobile phone is for example arranged in machine, the identity recognition device 1.Certainly, the mobile phone is also not restricted to shield comprehensively
Mobile phone.
For example, the screen for lifting mobile phone or touch mobile phone can act as wake-up when user needs to boot up unlock
The effect of the identification authentication device 1.After the identification authentication device 1 is waken up, identify that the user in front of the mobile phone is legal
User when, then solve lock screen.
As it can be seen that the electronic equipment 1 can be realized to be measured since the electronic equipment 100 applies the identification authentication device 1
The longer-distance sensing of object, and it is very fast to sense response speed.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
What the description of mode ", " example ", " specific example " or " some examples " etc. meant to describe in conjunction with the embodiment or example
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the application.In this specification
In, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
Although presently filed embodiment has been shown and described above, it is to be understood that above embodiment is
Illustratively, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be right
Above embodiment is changed, modifies, replacement and variant.
Claims (8)
1. a kind of identification authentication device, comprising:
First projector, for projecting infrared floodlight to an object under test；
Second projector, for projecting infrared structure light to the object under test；
Image sensing device, for capturing by the reflected infrared floodlight of the object under test, sensing the first of the object under test
Infrared image, and for capturing by the reflected infrared structure light of the object under test, sensing the second red of the object under test
Outer image；With
Processor, for obtaining the deep image information of the object under test according to second infrared image, and for according to this
One infrared image and deep image information confirm whether the identity of the object under test is legal；
It is characterized by: the identification authentication device further comprises high-speed data transfer link, in image sensing device
It indicates that the signal of the signal and expression of first infrared image second infrared image is transmitted in the processor to be handled.
2. identification authentication device as described in claim 1, it is characterised in that: the wave-length coverage of the infrared floodlight be [925,
955] nanometer, and/or, the wave-length coverage of the infrared structure light is [925,955] nanometer.
3. identification authentication device as described in claim 1, it is characterised in that: the wavelength of the infrared floodlight be 940 nanometers,
Or/and the wavelength of the infrared structure light is 940 nanometers.
4. identification authentication device as described in claim 1, it is characterised in that: the identification authentication device further comprises control
Circuit, when carrying out identification authentication, the control circuit is passed for controlling first projector, second projector and the image
Induction device cooperates.
5. identification authentication device as described in claim 1, it is characterised in that: the identification authentication device further comprises control
Circuit, the control circuit is for controlling first projector and second projector time-sharing work.
6. identification authentication device as claimed in claim 5, it is characterised in that: when carrying out identification authentication, the control circuit
First projector is controlled to work prior to second projector.
7. identification authentication device as claimed in claim 5, it is characterised in that: when carrying out identification authentication, the control circuit
Second projector is controlled to work prior to first projector.
8. a kind of electronic equipment, which is characterized in that including identification authentication device described in any one of claim 1-7.
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|---|---|---|---|
| CN201820557745.1U CN209168110U (en) | 2018-04-18 | 2018-04-18 | Identification authentication device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820557745.1U CN209168110U (en) | 2018-04-18 | 2018-04-18 | Identification authentication device and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110458131A (en) * | 2019-08-17 | 2019-11-15 | 深圳阜时科技有限公司 | Sensing system and electronic equipment under a kind of screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110458131A (en) * | 2019-08-17 | 2019-11-15 | 深圳阜时科技有限公司 | Sensing system and electronic equipment under a kind of screen |
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