CN103761465A - Method and device for identity authentication - Google Patents
Method and device for identity authentication Download PDFInfo
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- CN103761465A CN103761465A CN201410051770.9A CN201410051770A CN103761465A CN 103761465 A CN103761465 A CN 103761465A CN 201410051770 A CN201410051770 A CN 201410051770A CN 103761465 A CN103761465 A CN 103761465A
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- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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Abstract
The invention discloses a method and device for identity authentication. The method includes the steps that a biological characteristic image of a person to be authenticated is obtained through a camera device, the obtained biological characteristic image of the person to be authenticated is matched with a pre-stored biological characteristic image, bio-assay is carried out on the person to be authenticated on the basis of a blood volume pulse signal of the person to be authenticated, and the person to be authenticated passes the identity authentication when the obtained biological characteristic image of the person to be authenticated is successfully matched with the pre-stored biological characteristic image and the person to be authenticated passes the bio-assay on the basis of the blood volume pulse signal. According to the method and device, biological identification is combined with the bio-assay carried out on the person to be authenticated through the blood volume pulse signal; when the camera device is used for obtaining the biological characteristic image of the person to be authenticated for biological identification, the bio-assay is carried out through the blood volume pulse signal, and safety and reliability of biological identification are improved.
Description
Technical field
The present invention relates to biological identification technology, relate in particular to a kind of method and device of authentication.
Background technology
Due to the features such as stability, uniqueness and convenience of biological characteristic, the biological identification technology of usining carries out authentication as means and replaces gradually traditional identification modes such as key, password.Biological identification technology refers to some biological characteristics that utilize human body, such as people's face, iris, fingerprint, palmmprint, hand shape etc., carry out the technology of identification, it mainly comprises: gather image, from the image gathering, extract biological information, subsequently extracted characteristic information is mated with the characteristic information of all or part registered in advance in database, according to matching result, this authenticatee is carried out to authentication.
In prior art, occurred contactless biological identification technology, it utilizes camera head to obtain image, and obtains biological information to be matched from this image.Yet for such as fingerprint, palmmprint, the biological characteristics such as hand shape, adopt silicon, the materials such as rubber can carry out counterfeit, especially gummy, to obtain by the aqueous solution of glue is carried out to gelation, its composition is extremely similar to the composition of human epidermal, generally for the optical sensor of contactless biological identification technology, can't differentiate some biological characteristics that adopt natural gum counterfeit at present, fingerprint for example, palmmprint etc., so adopt at present camera head to obtain the mode that image carries out bio-identification, also be not easy to identify these counterfeit biological characteristics, its safety and reliability existing problems.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of method and device of authentication, to solve prior art, adopts camera head to obtain image to carry out the low problem of safety and reliability that bio-identification exists.
According to an aspect of the present invention, provide a kind of method of authentication, comprising:
By camera head, obtain person's to be verified biometric image;
Obtained person's to be verified biometric image is mated with the biometric image prestoring;
Wherein, described method also comprises:
Blood volume pulse signal based on this person to be verified, carries out live body detection to described person to be verified;
When obtained person's to be verified biometric image, the match is successful with the biometric image prestoring, and by the live body based on blood volume pulse signal, detect as described person to be verified, determines that this person to be verified is by authentication.
According to another aspect of the present invention, also provide a kind of device for authentication, having comprised:
Image acquiring device, for obtaining person's to be verified biometric image by camera head;
Coalignment, for mating obtained person's to be verified biometric image with the biometric image prestoring;
The described device for authentication also comprises:
Living body detection device, for the blood volume pulse signal based on this person to be verified, carries out live body detection to described person to be verified;
The definite device that passes through of authentication, for working as obtained person's to be verified biometric image, the match is successful with the biometric image prestoring, and when described person to be verified detects by the live body based on blood volume pulse signal, determine that this person to be verified is by authentication.
The present invention by bio-identification with by blood volume pulse signal, treat verifier and carry out live body and detect and to combine, when the biometric image that adopts camera head to obtain person to be verified carries out bio-identification, by blood volume pulse signal, carry out live body detection, improved the safety and reliability of bio-identification.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the method flow diagram of a kind of authentication according to an embodiment of the invention;
Fig. 2 is a kind of according to an embodiment of the invention device schematic diagram for authentication.
In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 shows the method flow diagram of a kind of authentication according to an embodiment of the invention.
As shown in Figure 1, in step S101, by camera head, obtain person's to be verified biometric image.
Wherein, described camera head can be the camera head that the equipment for authentication carries, preferably, this camera head can be the camera head that the subscriber equipment such as mobile terminal carries, described mobile terminal includes but not limited to cell phone intelligent mobile phone, notebook computer, vehicle-mounted computer etc.; Described camera head can be also independent camera head, obtains after person's to be verified biometric image at independent camera head, and obtained biometric image is transferred to the equipment for authentication.
Alternatively, can obtain by camera head person's to be verified one or more biometric image.
Alternatively, can when meeting pre-defined rule, open the light source of camera head, by this camera head, obtain subsequently person's to be verified biometric image.
Wherein, described pre-defined rule can comprise with the next item down:
A) when opening this camera head and prepare to obtain person's to be verified biometric image, acquiescence is opened the light source of this camera head;
B) by the light of testing environment, judge whether to open the light source of this camera head, when the light of environment meets the condition that needs unlatching light source, open the light source of this camera head.For example, the parameter that the condition of setting unlatching light source is ambient light, for example brightness, is less than predetermined parameter threshold etc.
Wherein, the biological characteristic described in the present invention refers to each the individual unique physiological property that can measure or can automatically identify and verify, includes but not limited to fingerprint, palmmprint, people's face etc.
It will be understood by those skilled in the art that above-mentioned biological characteristic is only for giving an example, other biological characteristic, as applicable to the present invention, also should be included in protection domain of the present invention, and is contained in this with way of reference.
In step S102, obtained person's to be verified biometric image is mated with the biometric image prestoring.
Particularly, can obtain the ROI(Region of Interest of person's to be verified biometric image, region of interest), subsequently this ROI is mated with the ROI of the biometric image prestoring.
This biological characteristic of palmmprint of take is below example, and the ROI of the biometric image that obtains person to be verified is described.
First, by camera head, obtain person's to be verified palm image, subsequently obtained palm image is removed to background, determine palm area, preferably, the removal background method providing in Chinese patent CN200810114488.5 can be provided, the palm image obtaining in the present embodiment is removed to background.Then, get an incircle or oval as ROI in determined palm area, the semi-major axis of this inscribe radius of a circle or inner ellipse is less than or equal to the radius of the maximum inscribed circle of this palm area, or get the inscribe square or rectangular of this incircle or inner ellipse as ROI, wherein, to each point on hand, the initial value of all take is radius, take this point as center of circle picture circle, if points all on this circumference is all inner at palm, expand radius until circumference exceeds palm area, after traveling through all points, can obtain radius and the central coordinate of circle of the maximum inscribed circle of this palm area.
After obtaining the ROI of person's palm image to be verified, mate with the ROI of the palm image prestoring.Wherein, the coupling of ROI can adopt Gray-scale Matching, for example, can adopt normalized Gray-scale Matching method, its by pixel the gray matrix of the ROI of person's palm image to be verified the gray matrix with the ROI that prestores, according to method for measuring similarity, search for relatively, preferably, can employing amplitude sequence correlation method, FFT(Fast Fourier Transformation, Fast Fourier Transform (FFT)) correlation method, the sequence determining method of hierarchical search etc.
Particularly, can also from above-mentioned ROI, extract biological information, subsequently extracted biological information be mated with the biological information prestoring.Preferably, for example, for this biological characteristic of palmmprint, can adopt such as " wavelet energy feature ", " blur direction element energy feature ", " palmmprint line structural characteristics ", " algebraic characteristic of palmmprint ", " image phase and direction character ", " feature based on palmmprint texture ", " feature based on palm print characteristics point " etc., carries out extraction and the coupling of palm print characteristics information.
Wherein, the described ROI prestoring and the biological information prestoring, can adopt as the ROI described in step S102 determines method and biological information extracting method and determine or feature extraction, the biological information of storing subsequently determined ROI information or extracting.
Alternatively, when camera head obtains a person's to be verified width biometric image, this width biometric image of obtained person to be verified is mated with the biometric image prestoring, when this width biometric image, the match is successful with the biometric image prestoring, and the match is successful with the biometric image prestoring for definite person's to be verified who obtains biometric image.
Alternatively, when camera head obtains several biometric images of person to be verified, several biometric images of obtained person to be verified are mated with the biometric image prestoring respectively, the first predetermined quantity in described several biometric images, a width biometric image for example, the match is successful with the biometric image prestoring, and the match is successful with the biometric image prestoring for definite person's to be verified who obtains biometric image.
According to the difference of use scenes, the biometric image prestoring can be one, also can be a plurality of, obtained person's to be verified biometric image can be mated with the one or more biometric images that prestore, when obtained person's to be verified biometric image is mated with the biometric image prestoring, when obtained person's to be verified biometric image, the match is successful with the biometric image prestoring, and the match is successful with the biometric image prestoring to determine the person's to be verified who obtains biometric image; Or, when obtained person's to be verified biometric image is mated with a plurality of biometric images that prestore, the match is successful for the biometric image of the second predetermined quantity in obtained person's to be verified biometric image and a plurality of biometric images that prestore, and the match is successful with the biometric image prestoring to determine the person's to be verified who obtains biometric image.
The embodiment of the present invention can also comprise step S103, and wherein step S103 can carry out before or after step S101, also can after step S102 or synchronously, carry out.
In step S103, the blood volume pulse based on this person to be verified (Blood Volume Pulse, BVP) signal, carries out live body detection to described person to be verified.
Particularly, first, obtain described person's to be verified blood volume pulse signal, again based on described blood volume pulse signal, judge in predetermined amount of time whether have vital sign, in described predetermined amount of time, have vital sign, determine that described person to be verified detects by live body.Wherein, can adopt photoplethysmography (Photolethysmography, PPG), utilize photoelectricity means without wound, to detect blood volume in biological tissue and change, obtain person's to be verified blood volume pulse signal.
Wherein, described vital sign refers to that in the present invention, described vital sign includes but not limited to for judging patient's state of an illness weight and the indication of criticality: pulse, breathe blood pressure etc.It will be understood by those skilled in the art that above-mentioned vital sign is only for giving an example, other vital sign, as applicable to the present invention, also should be included in protection domain of the present invention, and is contained in this with way of reference.
With two examples, Benq carries out live body detection in person's to be verified BVP signal to described person to be verified below.
Example 1
First, obtain the mean value of all pixel values of rgb color passage in the person's to be verified ROI of biometric image, generate an original signal, adopt subsequently laplacian eigenmaps algorithm from described original signal, to extract PPG signal.Conventionally, PPG Medical Instruments comprises illuminator and receiver, wherein, the light beam of illuminator transmitting specific wavelength, while being irradiated to human body skin surface, light beam arrives receiver by transmission or reflection mode, in this process, because light beam is subject to the absorption of human body skin musculature and blood, light intensity has certain decay.Due to the beat variation of the blood volume that causes of cardiac cycle, can affect skin and the variation of blood to the uptake of light, so being pulsating nature, the light intensity that receiver receives changes, convert this light intensity variable signal to electric signal, the variable signal that can obtain the capacity pulse blood flow that carries abundant human microvascular circulation system information, the electric signal that wherein said light intensity variable signal converts to is PPG signal.
Subsequently, from described PPG signal, extract BVP signal.Particularly, can remove the singular point in PPG signal, PPG signal is carried out to filtering processing, obtain described BVP signal.
Obtain after BVP signal, detect described BVP signal within a predetermined period of time and whether have periodic crest, if there is within a predetermined period of time periodically crest in described BVP signal, determine that described person to be verified exists vital sign within a predetermined period of time, determine that described person to be verified detects by live body, otherwise, if there is not within a predetermined period of time periodically crest in described BVP signal, determine that described person to be verified does not exist vital sign within a predetermined period of time, determine the obstructed health check-up survey of making a living of described person to be verified.
Example 2
First, obtain respectively the mean value of all pixel values of each RGB passage picture in the person's to be verified ROI of biometric image, become three original signals of corresponding rgb color passage respectively next life, the amplitude of more described three original signals, therefrom selecting range maximum original signal is extracted PPG signal from described original signal.Subsequently, extracted PPG signal is carried out to FFT(Fast Fourier Transformation, Fast Fourier Transform (FFT)) obtain energy spectrum, from FFT conversion, in the energy spectrum of acquisition, choose part spectral coverage in scheduled frequency range as BVP signal, preferably, consider that people's pulse range is generally at 45bpm(Beat Per Minute) between 240bpm, can select the energy spectrum between 0.75Hz to 4Hz.
Obtain after BVP signal, detect described BVP signal within a predetermined period of time and whether have periodic crest, if there is within a predetermined period of time periodically crest in described BVP signal, determine that described person to be verified exists vital sign within a predetermined period of time, determine that described person to be verified detects by live body, otherwise, if there is not within a predetermined period of time periodically crest in described BVP signal, determine that described person to be verified does not exist vital sign within a predetermined period of time, determine the obstructed health check-up survey of making a living of described person to be verified.
In step S104, when obtained person's to be verified biometric image, the match is successful with the biometric image prestoring, and by the live body based on blood volume pulse signal, detect as described person to be verified, determines that this person to be verified is by authentication.
The present invention by bio-identification with by blood volume pulse signal, treat verifier and carry out live body and detect and to combine, when the biometric image that adopts camera head to obtain person to be verified carries out bio-identification, by blood volume pulse signal, carry out live body detection, improved the safety and reliability of bio-identification.
Fig. 2 shows a kind of according to an embodiment of the invention device schematic diagram for authentication.As shown in Figure 2, should comprise for the device of authentication: image acquiring device 201, coalignment 202, living body detection device 203, authentication is determined by device 204.
Wherein, described image acquiring device 201, for obtaining person's to be verified biometric image by camera head.
Wherein, described camera head can be the camera head that the equipment for authentication carries, and preferably, this camera head can be the camera head that the subscriber equipment such as mobile terminal carries; Described camera head can be also independent camera head, obtains after person's to be verified biometric image at independent camera head, and obtained biometric image is transferred to the equipment for authentication.
Alternatively, described image acquiring device can comprise: the first image collection module (not shown), and for obtain person's to be verified one or more biometric image by described camera head.
Alternatively, a kind of device for authentication of one embodiment of the invention can also comprise: light source opening device (not shown), for when meeting pre-defined rule, open the light source of described camera head.Subsequent picture acquisition device obtains person's to be verified biometric image again by this camera head.
Wherein, described pre-defined rule can comprise with the next item down:
A) when opening this camera head and prepare to obtain person's to be verified biometric image, acquiescence is opened the light source of this camera head;
B) by the light of testing environment, judge whether to open the light source of this camera head, when the light of environment meets the condition that needs unlatching light source, open the light source of this camera head.For example, the parameter that the condition of setting unlatching light source is ambient light, for example brightness, is less than predetermined parameter threshold etc.
Wherein, the biological characteristic described in the present invention refers to each the individual unique physiological property that can measure or can automatically identify and verify, includes but not limited to fingerprint, palmmprint, people's face etc.
It will be understood by those skilled in the art that above-mentioned biological characteristic is only for giving an example, other biological characteristic, as applicable to the present invention, also should be included in protection domain of the present invention, and is contained in this with way of reference.
Particularly, coalignment 202 can obtain the ROI(Region of Interest of person's to be verified biometric image, region of interest), subsequently this ROI is mated with the ROI of the biometric image prestoring.
This biological characteristic of palmmprint of take is below example, and the ROI of the biometric image that obtains person to be verified is described.
First, camera head obtains person's to be verified palm image, the palm image that 202 pairs of coalignments obtain is subsequently removed background, determine palm area, preferably, the removal background method providing in Chinese patent CN200810114488.5 can be provided, the palm image obtaining in the present embodiment is removed to background.Then, get an incircle or oval as ROI in determined palm area, the semi-major axis of this inscribe radius of a circle or inner ellipse is less than or equal to the radius of the maximum inscribed circle of this palm area, or get the inscribe square or rectangular of this incircle or inner ellipse as ROI, wherein, to each point on hand, the initial value of all take is radius, take this point as center of circle picture circle, if points all on this circumference is all inner at palm, expand radius until circumference exceeds palm area, after traveling through all points, can obtain radius and the central coordinate of circle of the maximum inscribed circle of this palm area.
After obtaining the ROI of person's palm image to be verified, mate with the ROI of the palm image prestoring.Wherein, the coupling of ROI can adopt Gray-scale Matching, for example, can adopt normalized Gray-scale Matching method, its by pixel the gray matrix of the ROI of person's palm image to be verified the gray matrix with the ROI that prestores, according to method for measuring similarity, search for relatively, preferably, can employing amplitude sequence correlation method, FFT(Fast Fourier Transformation, Fast Fourier Transform (FFT)) correlation method, the sequence determining method of hierarchical search etc.
Particularly, coalignment 202 can also extract biological information from above-mentioned ROI, subsequently extracted biological information is mated with the biological information prestoring.Preferably, for example, for this biological characteristic of palmmprint, can adopt such as " wavelet energy feature ", " blur direction element energy feature ", " palmmprint line structural characteristics ", " algebraic characteristic of palmmprint ", " image phase and direction character ", " feature based on palmmprint texture ", " feature based on palm print characteristics point " etc., carries out extraction and the coupling of palm print characteristics information.
Wherein, the described ROI prestoring and the biological information prestoring, can adopt as the ROI described in step S102 determines method and biological information extracting method and determine or feature extraction, the biological information of storing subsequently determined ROI information or extracting.
Alternatively, when camera head obtains a person's to be verified width biometric image, described coalignment 202 can comprise: the first matching module (not shown), for this width biometric image of obtained person to be verified is mated with the biometric image prestoring, when this width biometric image, the match is successful with the biometric image prestoring, and the match is successful with the biometric image prestoring for definite person's to be verified who obtains biometric image.
Alternatively, when camera head obtains several biometric images of person to be verified, described coalignment 202 can comprise: the second matching module (not shown), for several biometric images of obtained person to be verified are mated with the biometric image prestoring respectively, the biometric image of the first predetermined quantity in described several biometric images, the match is successful with the biometric image prestoring, and the match is successful with the biometric image prestoring for definite person's to be verified who obtains biometric image.
According to the difference of use scenes, the biometric image prestoring can be one, also can be a plurality of, described coalignment 202 can comprise: the 3rd matching module (not shown), for obtained person's to be verified biometric image is mated with the one or more biometric images that prestore, when obtained person's to be verified biometric image is mated with the biometric image prestoring, when obtained person's to be verified biometric image, the match is successful with the biometric image prestoring, the match is successful for the biometric image of determining the person's to be verified who obtains biometric image and prestoring, or, when obtained person's to be verified biometric image is mated with a plurality of biometric images that prestore, the match is successful for the biometric image of the second predetermined quantity in obtained person's to be verified biometric image and a plurality of biometric images that prestore, the match is successful for the biometric image of determining the person's to be verified who obtains biometric image and prestoring.
Living body detection device 203, for the blood volume pulse signal based on this person to be verified, carries out live body detection to described person to be verified.
Wherein, described living body detection device 203 can be carried out before or after image acquiring device 201, also can after coalignment 202 or synchronously, carry out.
Particularly, described living body detection device 203 can comprise:
Blood volume pulse signal acquisition module (not shown), for obtaining described person's to be verified blood volume pulse signal;
Vital sign judge module (not shown), for based on described blood volume pulse signal, judges in predetermined amount of time, whether there is vital sign;
Live body detects to be determined by module (not shown), for have vital sign in described predetermined amount of time, determines that described person to be verified detects by live body.
Wherein, can adopt photoplethysmography (Photolethysmography, PPG), utilize photoelectricity means without wound, to detect blood volume in biological tissue and change, obtain person's to be verified blood volume pulse signal.
Wherein, described vital sign refers to that in the present invention, described vital sign includes but not limited to for judging patient's state of an illness weight and the indication of criticality: pulse, breathe blood pressure etc.It will be understood by those skilled in the art that above-mentioned vital sign is only for giving an example, other vital sign, as applicable to the present invention, also should be included in protection domain of the present invention, and is contained in this with way of reference.
With two examples, Benq carries out live body detection in person's to be verified BVP signal to described person to be verified below.
Example 1
First, obtain the mean value of all pixel values of rgb color passage in the person's to be verified ROI of biometric image, generate an original signal, adopt subsequently laplacian eigenmaps algorithm from described original signal, to extract PPG signal.Conventionally, PPG Medical Instruments comprises illuminator and receiver, wherein, the light beam of illuminator transmitting specific wavelength, while being irradiated to human body skin surface, light beam arrives receiver by transmission or reflection mode, in this process, because light beam is subject to the absorption of human body skin musculature and blood, light intensity has certain decay.Due to the beat variation of the blood volume that causes of cardiac cycle, can affect skin and the variation of blood to the uptake of light, so being pulsating nature, the light intensity that receiver receives changes, convert this light intensity variable signal to electric signal, the variable signal that can obtain the capacity pulse blood flow that carries abundant human microvascular circulation system information, the electric signal that wherein said light intensity variable signal converts to is PPG signal.
Subsequently, from described PPG signal, extract BVP signal.Particularly, can remove the singular point in PPG signal, PPG signal is carried out to filtering processing, obtain described BVP signal.
Obtain after BVP signal, detect described BVP signal within a predetermined period of time and whether have periodic crest, if there is within a predetermined period of time periodically crest in described BVP signal, determine that described person to be verified exists vital sign within a predetermined period of time, determine that described person to be verified detects by live body, otherwise, if there is not within a predetermined period of time periodically crest in described BVP signal, determine that described person to be verified does not exist vital sign within a predetermined period of time, determine the obstructed health check-up survey of making a living of described person to be verified.
Example 2
First, obtain respectively the mean value of all pixel values of each RGB passage picture in the person's to be verified ROI of biometric image, become three original signals of corresponding rgb color passage respectively next life, the amplitude of more described three original signals, therefrom selecting range maximum original signal is extracted PPG signal from described original signal.Subsequently, extracted PPG signal is carried out to FFT(Fast Fourier Transformation, Fast Fourier Transform (FFT)) obtain energy spectrum, from FFT conversion, in the energy spectrum of acquisition, choose part spectral coverage in scheduled frequency range as BVP signal, preferably, consider that people's pulse range is generally at 45bpm(Beat Per Minute) between 240bpm, can select the energy spectrum between 0.75Hz to 4Hz.
Obtain after BVP signal, detect described BVP signal within a predetermined period of time and whether have periodic crest, if there is within a predetermined period of time periodically crest in described BVP signal, determine that described person to be verified exists vital sign within a predetermined period of time, determine that described person to be verified detects by live body, otherwise, if there is not within a predetermined period of time periodically crest in described BVP signal, determine that described person to be verified does not exist vital sign within a predetermined period of time, determine the obstructed health check-up survey of making a living of described person to be verified.
Authentication is determined by device 204, for working as obtained person's to be verified biometric image, the match is successful with the biometric image prestoring, and when described person to be verified detects by the live body based on blood volume pulse signal, determine that this person to be verified is by authentication.
The present invention by bio-identification with by blood volume pulse signal, treat verifier and carry out live body and detect and to combine, when the biometric image that adopts camera head to obtain person to be verified carries out bio-identification, by blood volume pulse signal, carry out live body detection, improved the safety and reliability of bio-identification.
It should be noted that the present invention can be implemented in the assembly of software and/or software and hardware, for example, each device of the present invention can adopt special IC (ASIC) or any other similar hardware device to realize.In one embodiment, software program of the present invention can carry out to realize step mentioned above or function by processor.Similarly, software program of the present invention (comprising relevant data structure) can be stored in computer readable recording medium storing program for performing, for example, and RAM storer, magnetic or CD-ROM driver or flexible plastic disc and similar devices.In addition, steps more of the present invention or function can adopt hardware to realize, for example, thereby as coordinate the circuit of carrying out each step or function with processor.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to be included in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.In addition, obviously other unit or step do not got rid of in " comprising " word, and odd number is not got rid of plural number.A plurality of unit of stating in system claim or device also can be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and does not represent any specific order.
Claims (14)
1. a method for authentication, is characterized in that, comprising:
By camera head, obtain person's to be verified biometric image;
Obtained person's to be verified biometric image is mated with the biometric image prestoring;
Wherein, described method also comprises:
Blood volume pulse signal based on this person to be verified, carries out live body detection to described person to be verified; And
When obtained person's to be verified biometric image, the match is successful with the biometric image prestoring, and by the live body based on blood volume pulse signal, detect as described person to be verified, determines that this person to be verified is by authentication.
2. method according to claim 1, is characterized in that, the described blood volume pulse signal based on person to be verified carries out live body detection to this person to be verified and comprises:
Obtain described person's to be verified blood volume pulse signal;
Based on described blood volume pulse signal, judge in predetermined amount of time, whether there is vital sign; And
In described predetermined amount of time, there is vital sign, determine that described person to be verified detects by live body.
3. method according to claim 2, is characterized in that, described vital sign comprises: pulse, breathe blood pressure.
4. method according to claim 1, is characterized in that, also comprises:
When meeting pre-defined rule, open the light source of described camera head.
5. method according to claim 1, is characterized in that, the described biometric image that obtains person to be verified by camera head comprises:
By camera head, obtain person's to be verified one or more biometric image;
Wherein, described obtained person's to be verified biometric image mated and comprised with the biometric image prestoring:
This width biometric image of obtained person to be verified is mated with the biometric image prestoring, when this width biometric image, the match is successful with the biometric image prestoring, and the match is successful with the biometric image prestoring for definite person's to be verified who obtains biometric image; Or
Several biometric images of obtained person to be verified are mated with the biometric image prestoring respectively, the biometric image of the first predetermined quantity in described several biometric images, the match is successful with the biometric image prestoring, and the match is successful with the biometric image prestoring for definite person's to be verified who obtains biometric image.
6. method according to claim 1, is characterized in that, described obtained person's to be verified biometric image is mated and comprised with the biometric image prestoring:
Obtained person's to be verified biometric image is mated with the one or more biometric images that prestore;
When obtained person's to be verified biometric image is mated with the biometric image prestoring, when obtained person's to be verified biometric image, the match is successful with the biometric image prestoring, and the match is successful with the biometric image prestoring to determine the person's to be verified who obtains biometric image; Or
When obtained person's to be verified biometric image is mated with a plurality of biometric images that prestore, the match is successful for the biometric image of the second predetermined quantity in obtained person's to be verified biometric image and a plurality of biometric images that prestore, and the match is successful with the biometric image prestoring to determine the person's to be verified who obtains biometric image.
7. according to the method described in any one in claim 1 to 6, it is characterized in that, described biological characteristic comprise following at least one: fingerprint, palmmprint, people's face.
8. for a device for authentication, it is characterized in that, comprising:
Image acquiring device, for obtaining person's to be verified biometric image by camera head;
Coalignment, for mating obtained person's to be verified biometric image with the biometric image prestoring;
The described device for authentication also comprises:
Living body detection device, for the blood volume pulse signal based on this person to be verified, carries out live body detection to described person to be verified; And
The definite device that passes through of authentication, for working as obtained person's to be verified biometric image, the match is successful with the biometric image prestoring, and when described person to be verified detects by the live body based on blood volume pulse signal, determine that this person to be verified is by authentication.
9. device according to claim 8, is characterized in that, described living body detection device comprises:
Blood volume pulse signal acquisition module, for obtaining described person's to be verified blood volume pulse signal;
Vital sign judge module, for based on described blood volume pulse signal, judges in predetermined amount of time, whether there is vital sign; And
Live body detects to be determined by module, for have vital sign in described predetermined amount of time, determines that described person to be verified detects by live body.
10. device according to claim 9, is characterized in that, described vital sign comprises: pulse, breathe blood pressure.
11. devices according to claim 8, is characterized in that, also comprise:
Light source opening device, for when meeting pre-defined rule, opens the light source of described camera head.
12. devices according to claim 8, is characterized in that,
Described image acquiring device comprises:
The first image collection module, for obtaining person's to be verified one or more biometric image by camera head;
Described coalignment comprises:
The first matching module, for this width biometric image of obtained person to be verified is mated with the biometric image prestoring, when this width biometric image, the match is successful with the biometric image prestoring, and the match is successful with the biometric image prestoring for definite person's to be verified who obtains biometric image; Or
The second matching module, for several biometric images of obtained person to be verified are mated with the biometric image prestoring respectively, the biometric image of the first predetermined quantity in described several biometric images, the match is successful with the biometric image prestoring, and the match is successful with the biometric image prestoring for definite person's to be verified who obtains biometric image.
13. devices according to claim 8, is characterized in that, described coalignment comprises:
The 3rd matching module, for mating obtained person's to be verified biometric image with the one or more biometric images that prestore, when obtained person's to be verified biometric image is mated with the biometric image prestoring, when obtained person's to be verified biometric image, the match is successful with the biometric image prestoring, the match is successful for the biometric image of determining the person's to be verified who obtains biometric image and prestoring, or, when obtained person's to be verified biometric image is mated with a plurality of biometric images that prestore, the match is successful for the biometric image of the second predetermined quantity in obtained person's to be verified biometric image and a plurality of biometric images that prestore, the match is successful for the biometric image of determining the person's to be verified who obtains biometric image and prestoring.
Device in 14. according to Claim 8 to 13 described in any one, is characterized in that, described biological characteristic comprise following at least one: fingerprint, palmmprint, people's face.
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| CN201410051770.9A CN103761465A (en) | 2014-02-14 | 2014-02-14 | Method and device for identity authentication |
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