CN107182218A - A kind of authentication method and device - Google Patents

A kind of authentication method and device Download PDF

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Publication number
CN107182218A
CN107182218A CN201580001264.1A CN201580001264A CN107182218A CN 107182218 A CN107182218 A CN 107182218A CN 201580001264 A CN201580001264 A CN 201580001264A CN 107182218 A CN107182218 A CN 107182218A
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CN
China
Prior art keywords
user
view
face
characteristic point
certification
Prior art date
Application number
CN201580001264.1A
Other languages
Chinese (zh)
Inventor
宋展
董玉明
Original Assignee
深圳先进技术研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳先进技术研究院 filed Critical 深圳先进技术研究院
Priority to PCT/CN2015/100100 priority Critical patent/WO2017113286A1/en
Publication of CN107182218A publication Critical patent/CN107182218A/en

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00Stereoscopic photography
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31User authentication
    • G06F21/32User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31User authentication
    • G06F21/36User authentication by graphic or iconic representation

Abstract

The invention provides a kind of authentication method and device, authentication method includes:Optical projection module projects structured light patterns are opened according to Verification System enabled instruction, photographing module is opened and obtains the user images with structured light patterns;The 3-D view for obtaining the user is calculated according to the calibrating parameters of the user images and photographing module with structured light patterns and optical projection module;The 3-D view of the user is matched with the 3-D view that the user prestores, after fitting through, the 3-D view certification of user passes through.User images with structured light patterns of the invention by gathering user, calculate the 3-D view that analysis obtains user, the 3-D view of user are matched with the 3-D view that user prestores, the security of certification is ensure that, the attack of two dimensional image is prevented.

Description

A kind of authentication method and device

Technical field

The invention belongs to safety certification field, more particularly to a kind of authentication method and device.

Background technology

In the prior art, mobile phone unblock certification usually requires user's input unlocking pin, if other people know cellphone subscriber Unlocking pin, it is easy to read the content in user mobile phone, the mode of unlocking pin be set it cannot be guaranteed that mobile phone is uses The people of family one is used, and this just brings potential safety hazard to the content in user mobile phone.

And for example existing gate inhibition's certification, is typically required user's input password, or obtain user images, but the user obtained Image is usually two dimensional image, and carrying out safety certification using user images has certain potential safety hazard, malicious attacker The photo of user can be used to be authenticated.

The content of the invention

The present invention provides a kind of authentication method for preventing 2-dimentional photo from attacking and device, two-dimentional in the prior art for solving The problem of there is potential safety hazard in image authentication.

In order to solve the above-mentioned technical problem, the present invention provides a kind of authentication method, including,

Optical projection module projects structured light patterns are opened according to Verification System enabled instruction, photographing module is opened and obtains band There are the user images of structured light patterns;

Calculated according to the calibrating parameters of user images and photographing module and optical projection module with structured light patterns To the 3-D view of the user;

The 3-D view of the user is matched with the 3-D view that the user prestores, after fitting through, user 3-D view certification pass through.

The present invention separately provides a kind of authentication device, including,

Acquisition module, for opening optical projection module projects structured light patterns according to Verification System enabled instruction, is obtained The user images with structured light patterns that photographing module is obtained;

Processing module, for the mark according to user images and photographing module and optical projection module with structured light patterns Determine parameter and calculate the 3-D view for obtaining the user;

Matching module, for the 3-D view of user to be matched with the 3-D view that the user prestores, after fitting through, The 3-D view certification of user passes through.

Authentication method and device that the present invention is provided, by gathering the user images with structured light patterns of user, meter The 3-D view for obtaining user is analysed in point counting, the 3-D view of user is matched with the 3-D view that user prestores, Neng Goubao The security of identification card, prevents the attack of two dimensional image.Present invention can apply to the unblock of mobile terminal, Alipay etc. Verification process, gate inhibition's verification process during transaction etc..

Brief description of the drawings

In order to illustrate the technical solution of the embodiments of the present invention more clearly, making required in being described below to embodiment Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, For those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings Obtain other accompanying drawings.

Fig. 1 is the authentication method flow chart of one embodiment of the invention;

Fig. 2 is the optical projection function structure chart of one embodiment of the invention;

The stream for the 3-D view matching process that Fig. 3 prestores for the 3-D view of the user of one embodiment of the invention with user Cheng Tu;

Fig. 4 is rotated to the schematic diagram of horizontal direction for the characteristic point of the user face face of one embodiment of the invention;

Fig. 5 is the authentication device structure chart of one embodiment of the invention;

Fig. 6 unlocks flow diagram of authentication procedures for the mobile phone of one embodiment of the invention.

Embodiment

In order that the technical characterstic and effect of the present invention are more obvious, technical scheme is done below in conjunction with the accompanying drawings Further illustrate, the present invention can also there are other different instantiations to be illustrated or implement, any art technology The equivalents that personnel do within the scope of the claims belong to the protection category of the present invention.

As shown in figure 1, Fig. 1 is the authentication method flow chart of one embodiment of the invention.

The present embodiment calculates the three-dimensional that analysis obtains user by gathering the user images with structured light patterns of user Image, the 3-D view of user is matched with the 3-D view that user prestores, and be ensure that the security of certification, is prevented The attack of two dimensional image.

Specifically, the described authentication method of this implementation includes:

Step 101:Optical projection module projects structured light patterns are opened according to Verification System enabled instruction, shooting is opened Module obtains the user images with structured light patterns;

Step 102:Joined according to the demarcation of the user images and photographing module with structured light patterns and optical projection module Number calculates the 3-D view for obtaining the user;

Specifically, the image coordinate of coding characteristic point is first extracted from the user images with structured light patterns, and The coding rule of the encoded radio of detection coding characteristic point, the process and structured light patterns is closely related, using different knots The different encryption algorithm of structure light correspondence, decoding algorithm will do corresponding design, and the application is without limitation.

After the encoded radio for obtaining coding characteristic point and characteristic point, with reference to photographing module and the calibrating parameters of optical projection module The three-dimensional coordinate at coding characteristic point is calculated, the threedimensional model of user is obtained with reference to points cloud processing and networking processing. Wherein, the demarcation of photographing module and optical projection module can realize that the application is no longer carried out in detail to this using existing method Thin explanation.

Step 103:The 3-D view of the user is matched with the 3-D view that the user prestores, matching is logical Later, the 3-D view certification of user passes through.

As shown in Fig. 2 optical projection module described herein includes light source 201, structure light grating 202 and optics Lens group 203, the light that light source is sent is exposed on user by structure light grating and optical lens group.

The preferred LED array of the type of light source 201, to reduce the size of optical projection module there is provided high-luminance light, Increase illumination uniformity simultaneously.Another light source can use visible light source or near-infrared light source, if from near-infrared light source, Then install an infrared fileter additional on the outside of camera model.

The preferred two-value Geometry coding of design of structure light grating 202, i.e., pressed by different geometric figures (element) Whole pattern is constituted according to pseudo random matrix principle, according to Pseudo-random principle, pattern existence anduniquess window features, i.e., The built-up sequence of several elements only occurs once in whole pattern.

It is h (x)=x using primitive polynomial using 8 kinds of different geometric figures in one embodiment4+x+a3Generation Pseudo-random sequence, by folding, obtains 65X63 pattern matrix, each matrix element is a geometric graph Shape, encoded point is selected according to pattern matrix, and the geometric figure around encoded point constitutes encoded radio, is according to encoded radio It can determine that the position of encoded point.Coded system described in the present embodiment can improve the stability of decoding, improve follow-up solution The success rate of code.

Optical lens group 203 uses minisize optical lens group, to reduce the size of optical projection module, optical lens Group can targetedly design lens system according to the distance and scope (visual angle) of required shooting.

In one embodiment of the invention, the Verification System enabled instruction is the unlock instruction that sends of mobile terminal, by by Button is pressed, or double-clicks screen, or slides screen, or input information starts unblock, the 3-D view certification of user passes through The screen after unblock is shown afterwards.

In one embodiment of the invention, the Verification System enabled instruction instructs for transaction authentication, when being paid the bill such as Alipay Certification, the 3-D view of user is sent to far-end server, and far-end server determines 3-D view and the user of user Whether the 3-D view prestored matches, and the 3-D view certification of user passes through rear continuous business.

In one embodiment of the invention, the Verification System enabled instruction instructs for gate inhibition's certification, and the 3-D view of user is recognized Card opens gate inhibition's door after passing through.

The authentication method that the present invention is provided is applied in mobile terminal unblock, Alipay transaction authentication and gate inhibition's certification, energy Enough prevent other people malicious attack, it is ensured that the safety of certification.

As shown in figure 3, the 3-D view that Fig. 3 prestores for the 3-D view of the user of one embodiment of the invention with user Flow chart with process.Specifically, the 3-D view progress that the 3-D view of the user and the user are prestored With further comprising,

Step 301:The characteristic point of user face face is determined according to the 3-D view of user;

Step 302:The anglec of rotation of user is obtained according to the characteristic point of user face face;

Specifically, as shown in figure 4, Fig. 4 is characterized a little vertical schematic diagram being mapped in same level plane, figure Label A, B, C in 4 are the characteristic point relative datum face N of user face face position, and reference plane N is use Plane when family front is shot where eyes.Assuming that characteristic point A, B is the position that eyes are mapped to horizontal plane, it is special The position that point C is mapped to horizontal plane for nose is levied, if being just to camera lens, characteristic point A, B during user's shooting Should be on reference plane N, as shown in Figure 4, not just to camera lens when user shoots, according to characteristic point A, B and reference plane N can determine that have rotated α when user shoots.

Step 303:The relative altitude between the characteristic point of user face face is determined according to the anglec of rotation;

When it is implemented, in an embodiment, can use and the characteristic point of all user faces face is united using any as origin One rotation alpha, determines the relative altitude between the characteristic point of user face face, such as Fig. 4 A ', B ', C ' again after rotation For postrotational characteristic point position.

In another embodiment, the relative altitude between the characteristic point of user face face is directly calculated according to the anglec of rotation.

Step 304:Used in the 3-D view that the relative altitude of the characteristic point of user face face is prestored with the user The relative altitude of the characteristic point of family face face is matched.

When it is implemented, in view of the presence of error, when the relative altitude of the characteristic point of user face face and user are pre- When the relative altitude of the characteristic point of user face face is in a preset range in the 3-D view deposited, then it is assumed that matching.

The present embodiment can accelerate the verification process of user's 3-D view, it is considered to embody the feature at the face of user characteristics Point, before matching, on the angle correction that user is rotated to same level, it is possible to increase the precision of matching.

The authentication method that the present invention is provided is analyzed by gathering the user images with structured light patterns of user, calculating To the 3-D view of user, the 3-D view of user is matched with the 3-D view that user prestores, certification is ensure that Security, prevents the attack of two dimensional image.Present invention can apply to during the transaction such as the unblock of mobile terminal, Alipay Verification process, gate inhibition's verification process etc..

As shown in figure 5, Fig. 5 is the authentication device structure chart of one embodiment of the invention.The device can pass through logic electricity Either existing high-performance calculation terminal, such as mobile phone, tablet personal computer, computer are realized or be installed on to chip on road Etc. in equipment, or the function of each part is realized in the way of functional module by software.

Specifically, the authentication device includes,

Acquisition module 501, for opening optical projection module projects structured light patterns according to Verification System enabled instruction, Obtain the user images with structured light patterns that photographing module is obtained;

Processing module 502, for according to user images and photographing module and optical projection module with structured light patterns Calibrating parameters calculate and obtain the 3-D view of the user;

Matching module 503, for the 3-D view of user to be matched with the 3-D view that the user prestores, matching is logical Later, the 3-D view certification of user passes through.

In one embodiment of the invention, the unlock instruction that the acquisition module sends mobile terminal starts as Verification System Instruction, the 3-D view certification of user passes through the screen after rear display unblock.

In one embodiment of the invention, the acquisition module regard transaction authentication instruction as Verification System enabled instruction, user 3-D view certification pass through rear continuous business.

In one embodiment of the invention, the acquisition module regard gate inhibition's certification instruction as Verification System enabled instruction, user 3-D view certification pass through it is rear opening gate inhibition door.

Specifically, in one embodiment of the invention, the matching module 503 specifically for,

The characteristic point of user face face is determined according to the 3-D view of user;

The anglec of rotation of user is obtained according to the characteristic point of user face face;

The relative altitude of the characteristic point of user face face is determined according to the anglec of rotation;

User face five in the 3-D view that the relative altitude of the characteristic point of user face face and the user are prestored The relative altitude of the characteristic point of official is matched.

The authentication method device that the present invention is provided, by gathering the user images with structured light patterns of user, is calculated Analysis obtains the 3-D view of user, and the 3-D view of user is matched with the 3-D view that user prestores, be ensure that The security of certification, prevents the attack of two dimensional image.Present invention can apply to the friendship such as the unblock of mobile terminal, Alipay Verification process, gate inhibition's verification process when easily etc..

In order to become apparent from the technical scheme for illustrating the application, it is described in detail below so that mobile phone is unlocked as an example.

As shown in fig. 6, the detailed process of mobile phone unblock certification includes:

Step 601:Start unblock by double-clicking mobile phone screen, simultaneously start optical projection module projects structure light Pattern, starts photographing module and obtains user's face image with structured light patterns.

Step 602:The image coordinate of coding characteristic point is extracted from user's face image with structured light patterns, Detect the encoded radio of coding characteristic point.

Step 603:The encoded radio combination photographing module of characteristic point calculates coding with the calibrating parameters of optical projection module Three-dimensional coordinate at characteristic point, user face 3-D view is obtained according to the three-dimensional coordinate of characteristic point.

Step 604:The characteristic point of user face face is determined according to user face 3-D view.

Step 605:The anglec of rotation of user is obtained according to the characteristic point of user face face.

Step 606:According to the characteristic point of anglec of rotation rotatable user face face, postrotational user face five is determined The relative altitude of the characteristic point of official.

Step 607:The three-dimensional that the relative altitude of the characteristic point of postrotational user face face and the user are prestored The relative altitude of the characteristic point of user face face is matched in image, when the characteristic point for meeting matching condition reaches one When determining threshold value, fit through, realize that user unlocks, the screen after display unblock.

The technical scheme described above for being merely to illustrate the application, any those of ordinary skill in the art can without prejudice to Under the spirit and scope of the present invention, above-described embodiment is modified and changed.Therefore, rights protection model of the invention Enclosing should be defined depending on right.

Claims (10)

1. a kind of authentication method, it is characterised in that including,
Optical projection module projects structured light patterns are opened according to Verification System enabled instruction, photographing module is opened and obtains band There are the user images of structured light patterns;
Calculated according to the calibrating parameters of user images and photographing module and optical projection module with structured light patterns To the 3-D view of the user;
The 3-D view of the user is matched with the 3-D view that the user prestores, after fitting through, user 3-D view certification pass through.
2. authentication method as claimed in claim 1, it is characterised in that the Verification System enabled instruction is mobile whole The unlock instruction sent is held, the 3-D view certification of user passes through the screen after rear display unblock.
3. authentication method as claimed in claim 1, it is characterised in that the Verification System enabled instruction is recognized for transaction Card instruction, the 3-D view certification of user passes through rear continuous business.
4. authentication method as claimed in claim 1, it is characterised in that the Verification System enabled instruction is recognized for gate inhibition Card instruction, the 3-D view certification of user passes through rear opening gate inhibition door.
5. the authentication method as described in any one of Claims 1-4, it is characterised in that by the graphics of the user As match further comprising with the 3-D view that the user prestores,
The characteristic point of user face face is determined according to the 3-D view of user;
The anglec of rotation of user is obtained according to the characteristic point of user face face;
The relative altitude between the characteristic point of user face face is determined according to the anglec of rotation;
User face five in the 3-D view that the relative altitude of the characteristic point of user face face and the user are prestored The relative altitude of the characteristic point of official is matched.
6. a kind of authentication device, it is characterised in that including,
Acquisition module, for opening optical projection module projects structured light patterns according to Verification System enabled instruction, is obtained The user images with structured light patterns that photographing module is obtained;
Processing module, for the mark according to user images and photographing module and optical projection module with structured light patterns Determine parameter and calculate the 3-D view for obtaining the user;
Matching module, for the 3-D view of user to be matched with the 3-D view that the user prestores, after fitting through, The 3-D view certification of user passes through.
7. authentication device as claimed in claim 6, it is characterised in that what the acquisition module sent mobile terminal Unlock instruction passes through the screen after rear display unblock as Verification System enabled instruction, the 3-D view certification of user.
8. authentication device as claimed in claim 6, it is characterised in that the acquisition module, which instructs transaction authentication, to be made For Verification System enabled instruction, the 3-D view certification of user passes through rear continuous business.
9. authentication device as claimed in claim 6, it is characterised in that the acquisition module, which instructs gate inhibition's certification, to be made For Verification System enabled instruction, the 3-D view certification of user passes through rear opening gate inhibition door.
10. the authentication device as described in any one of claim 6 to 9, it is characterised in that the matching module is specific For,
The characteristic point of user face face is determined according to the 3-D view of user;
The anglec of rotation of user is obtained according to the characteristic point of user face face;
The relative altitude of the characteristic point of user face face is determined according to the anglec of rotation;
User face five in the 3-D view that the relative altitude of the characteristic point of user face face and the user are prestored The relative altitude of the characteristic point of official is matched.
CN201580001264.1A 2015-12-31 2015-12-31 A kind of authentication method and device CN107182218A (en)

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PCT/CN2015/100100 WO2017113286A1 (en) 2015-12-31 2015-12-31 Authentication method and apparatus

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CN107182218A true CN107182218A (en) 2017-09-19

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Application Number Title Priority Date Filing Date
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Citations (5)

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CN102663361A (en) * 2012-04-01 2012-09-12 北京工业大学 Face image reversible geometric normalization method facing overall characteristics analysis

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102848786B (en) * 2012-07-20 2015-09-16 中国科学院上海光学精密机械研究所 Three-dimensional identity card and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1217328A1 (en) * 2000-12-20 2002-06-26 Olympus Optical Co., Ltd. 3d image acquisition apparatus and 3d image acquisition method
US20060120576A1 (en) * 2004-11-08 2006-06-08 Biomagnetic Imaging Llc 3D Fingerprint and palm print data model and capture devices using multi structured lights and cameras
CN101339607A (en) * 2008-08-15 2009-01-07 北京中星微电子有限公司 Human face recognition method and system, human face recognition model training method and system
CN102622588A (en) * 2012-03-08 2012-08-01 无锡数字奥森科技有限公司 Dual-certification face anti-counterfeit method and device
CN102663361A (en) * 2012-04-01 2012-09-12 北京工业大学 Face image reversible geometric normalization method facing overall characteristics analysis

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