CN106529512A

CN106529512A - Living body face verification method and device

Info

Publication number: CN106529512A
Application number: CN201611162606.0A
Authority: CN
Inventors: 范浩强
Original assignee: Beijing Megvii Technology Co Ltd; Beijing Aperture Science and Technology Ltd
Current assignee: Beijing Kuangshi Technology Co Ltd; Beijing Megvii Technology Co Ltd; Beijing Aperture Science and Technology Ltd
Priority date: 2016-12-15
Filing date: 2016-12-15
Publication date: 2017-03-22
Anticipated expiration: 2036-12-15
Also published as: CN106529512B

Abstract

The invention discloses a living body face verification method and device. The living body face verification method comprises the steps of dynamically changing a mode of irradiation light irradiated on a to-be-verified face; photographing a plurality of images of the to-be-verified face corresponding to various modes; and determining whether the to-be-verified face is a living body face or not based on light reflection characteristics of the to-be-verified face in the plurality of images. The living body face verification device comprises a light source, an image photographing device and a processing device. The light source is configured to dynamically change the mode of the irradiation light irradiated on the to-be-verified face; the image photographing device is configured to photograph the plurality of images of the to-be-verified face corresponding to the various modes; and the processing device is configured to determine whether the to-be-verified face is the living body face or not based on the light reflection characteristics of the to-be-verified face in the plurality of images. According to the living body face verification method and device, the living body face is verified, thereby improving the security of the face verification method and device.

Description

Living body faces verification method and device

Technical field

Embodiments of the invention are related to technical field of face recognition, relate more specifically to a kind of living body faces verification method and Device.

Background technology

The authentication system for being currently based on face has been used widely.With the authentication system based on face Popularization, the method for having derived some malicious attack face authentications.

In the authentication system based on face of most original, human face photo based on current shooting with prestore Comparison between human face photo, carries out authentication.However, this based on face when will be placed in by the photo of counterfeiter When before the photographic head in the authentication system that photo is compared, this authentication system compared based on human face photo may lead to Cross subscriber authentication.In other words, malicious user can (that is, photo be attacked using malicious attack is carried out by the photo of counterfeiter Hit), this authentication system compared based on human face photo can not resist photo attack.

The content of the invention

One embodiment of the disclosure provides a kind of living body faces and verifies device, and the living body faces checking device includes light Source, image capturing device and processing meanss.Light source is configured to the pattern that dynamic changes the irradiation light for being irradiated to face to be verified；Figure As filming apparatus are configured to shoot the image of several faces to be verified corresponding with each pattern respectively；Processing meanss are configured It is to determine whether the face to be verified is live body people based on the reflective character of face to be verified described in the multiple image Face.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the light source is configured to Dynamic changes the color of the irradiation light and/or position, so as to dynamic change is irradiated to the irradiation of the face to be verified The pattern of light.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the light source is display Screen, the display screen are configured to pass the photograph for changing that the next dynamic change of shown content is irradiated to the face to be verified Penetrate the pattern of light.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the display screen is matched somebody with somebody It is set to color and/or the position for showing predetermined pattern and the dynamic change predetermined pattern.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the light source is configured to According to pre-defined rule or randomly dynamic changes the pattern of the irradiation light for being irradiated to the face to be verified.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the processing meanss are also It is configured to generate the unique identifier corresponding with this face live body checking in the initial time of each living body faces checking.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the processing meanss are also Be configured to time dependent sequence of real numbers be generated according to the unique identifier, and dynamic is realized based on the sequence of real numbers Change is irradiated to the pattern of the irradiation light of face to be verified.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, described image shoots dress Put and be configured to recorded video to shoot the image of several faces to be verified corresponding with each pattern respectively.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the processing meanss are also The part of same face characteristic is directed in being configured to choose the multiple image, the reflective character of the part is then based on, And determine whether the face to be verified is living body faces according to the reflective character.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the processing meanss are also It is configured to choose the part of same position in the multiple image, then calculates the reflective character of the part, and according to institute State reflective character and determine whether the face to be verified is living body faces.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the processing meanss are also Be configured in the multiple image is chosen before the part of same position, registration process is carried out to the multiple image so that The position of the face in the multiple image is basically identical.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the processing meanss are also It is configured to：The dependency of the multiple image and the pattern of corresponding irradiation light is calculated, and according to the calculating of the dependency As a result judge whether the face to be verified is living body faces.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the processing meanss are also It is configured to：Judge the face to be verified in shooting image whether outside the irradiation light based on the multiple image High light, in this way, then points out user to find and avoids the environment of high light direct projection from carrying out the living body faces checking.

For example, in a kind of living body faces checking device that one embodiment of the disclosure is provided, the processing meanss are matched somebody with somebody It is set to described in the measurement multiple image after the reflective character of face, by the grader of training in advance to determine State whether face to be verified is living body faces.

Another embodiment of the disclosure provides a kind of living body faces and verifies device, and the living body faces checking device includes Light source, image capturing device, information transceiver and processing meanss.Light source is configured to dynamic change and is irradiated to witness to be tested The pattern of the irradiation light of face；Image capturing device is configured to shoot several described faces to be verified corresponding with each pattern respectively Image；Information transceiver is configured to the image of several faces to be verified be sent to server, from institute State server and receive and determine that the face to be verified is based on the reflective character of face to be verified described in the multiple image The no judgement information for living body faces, processing meanss are performed based on the judgement information and are verified or not by operation.

The further embodiment of the disclosure provides a kind of living body faces and verifies device, and the living body faces checking device includes Information transceiver and processing meanss.Described information transceiver is configured to receive several witnesses to be tested from client The image of face, the processing meanss are configured to the reflective character of face to be verified described in the multiple image and determine institute Whether be living body faces, described information transceiver is additionally configured to the processing meanss based on described if stating face to be verified The reflective character of face to be verified described in multiple image determines that whether the face to be verified is the judgement letter of living body faces Breath is sent to the client.

The further embodiment of the disclosure provides a kind of living body faces and verifies device, and the living body faces checking device includes Processor and memorizer.Be stored with the memorizer computer program instructions, and the computer program instructions are by the process Device performs following steps when running：The difference shot during the pattern for obtaining the irradiation light for being irradiated to face to be verified in dynamic change The image of several faces to be verified corresponding with each pattern；And based on face to be verified described in the multiple image Reflective character determine whether the face to be verified is living body faces.

The further embodiment of the disclosure provides a kind of living body faces verification method, and the living body faces verification method includes Dynamic changes the pattern of the irradiation light for being irradiated to face to be verified, and shoots that corresponding with each pattern respectively several are described to be tested The image of witness's face, and the witness to be tested is determined based on the reflective character of face to be verified described in the multiple image Whether face is living body faces.

For example, in a kind of living body faces verification method that the further embodiment of the disclosure is provided, dynamic changes described The pattern that dynamic change is irradiated to the irradiation light of the face to be verified is carried out in the color of irradiation light and/or position.

For example, in a kind of living body faces verification method that the further embodiment of the disclosure is provided, using display screen The light for sending is used as the irradiation light for being irradiated to the face to be verified, and the content by showing on the change display screen Carry out the pattern of the light that dynamic change display screen sends, so as to dynamic change is irradiated to the mould of the irradiation light of the face to be verified Formula.

For example, in a kind of living body faces verification method that the further embodiment of the disclosure is provided, by described aobvious Show predetermined pattern on display screen curtain, and change the color of the predetermined pattern and/or position show on the display screen to change The content shown.

For example, in a kind of living body faces verification method that the further embodiment of the disclosure is provided, according to pre-defined rule Or randomly dynamic changes the pattern of the irradiation light for being irradiated to the face to be verified.

For example, in a kind of living body faces verification method that the further embodiment of the disclosure is provided, in each live body people The initial time of face checking generates the unique identifier corresponding with this face live body checking.

For example, in a kind of living body faces verification method that the further embodiment of the disclosure is provided, also include：According to institute State unique identifier and generate time dependent sequence of real numbers, and realize that dynamic changes to be irradiated to based on the sequence of real numbers and treat The pattern of the irradiation light of checking face.

For example, the disclosure further embodiment provide a kind of living body faces verification method in, shoot respectively with respectively The image of corresponding several faces to be verified of individual pattern includes recording the video comprising described image.

For example, the disclosure further embodiment provide a kind of living body faces verification method in, based on it is described several The reflective character of face to be verified described in image determines whether the face to be verified is that living body faces include：Choose described The part of same face characteristic is directed in multiple image, the reflective character of the part is then calculated, and it is anti-according to the light Penetrate characteristic and determine whether the face to be verified is living body faces.

For example, the disclosure further embodiment provide a kind of living body faces verification method in, based on it is described several The reflective character of face to be verified described in image determines whether the face to be verified is that living body faces include：Choose described The part of same position in multiple image, then calculates the reflective character of the part, and true according to the reflective character Whether the fixed face to be verified is living body faces.

For example, it is in a kind of living body faces verification method that the further embodiment of the disclosure is provided, described many choosing In width image before the part of same position, registration process is carried out to the multiple image so that people in the multiple image The position of face is basically identical.

For example, the disclosure further embodiment provide a kind of living body faces verification method in, based on it is described several The reflective character of face to be verified described in image determines whether the face to be verified is that living body faces include：Calculate described The dependency of multiple image and the pattern of corresponding irradiation light；And judge described to be tested according to the result of calculation of the dependency Whether witness's face is living body faces.

For example, in a kind of living body faces verification method that the further embodiment of the disclosure is provided, also include：Based on institute State multiple image and judge the face to be verified in shooting image whether outside irradiation light high light, in this way, then Prompting user finds and avoids the environment of high light direct projection from carrying out the living body faces checking.

For example, it is in a kind of living body faces verification method that the further embodiment of the disclosure is provided, described many measuring Described in width image after the reflective character of face, the face to be verified is determined by the grader of training in advance whether For living body faces.

Description of the drawings

In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below the accompanying drawing to embodiment is simply situated between Continue, it should be apparent that, drawings in the following description merely relate to some embodiments of the present invention, rather than limitation of the present invention.

Fig. 1 (a) is the block diagram that a kind of living body faces that disclosure one embodiment is provided verify device；

Fig. 1 (b) is the schematic diagram that the living body faces shown in Fig. 1 (a) verify device；

Fig. 2 (a) is a kind of show area of the display screen of living body faces checking device that disclosure one embodiment is provided A kind of set-up mode in domain；

Fig. 2 (b) is a kind of show area of the display screen of living body faces checking device that disclosure one embodiment is provided Another kind of set-up mode in domain；

Fig. 2 (c) is a kind of show area of the display screen of living body faces checking device that disclosure one embodiment is provided Another set-up mode in domain；

Fig. 2 (d) is a kind of show area of the display screen of living body faces checking device that disclosure one embodiment is provided Another set-up mode in domain；

Fig. 3 (a) is the position that the dynamic that disclosure one embodiment is provided changes the irradiation light for being irradiated to face to be verified A kind of method；

Fig. 3 (b) is the position that the dynamic that disclosure one embodiment is provided changes the irradiation light for being irradiated to face to be verified Another kind of method；

Fig. 3 (c) is the position that the dynamic that disclosure one embodiment is provided changes the irradiation light for being irradiated to face to be verified Yet another method；

Fig. 4 is the one of the color that the dynamic that disclosure one embodiment is provided changes the irradiation light for being irradiated to face to be verified The method of kind；

Fig. 5 (a) is the position that the dynamic that disclosure one embodiment is provided changes the irradiation light for being irradiated to face to be verified With a kind of method of color；

Fig. 5 (b) is the position that the dynamic that disclosure one embodiment is provided changes the irradiation light for being irradiated to face to be verified With another kind of method of color；

Fig. 6 (a) is that image capturing device several corresponding with each pattern of acquisition that disclosure one embodiment is provided are treated A kind of exemplary scenario of image of checking face；

Fig. 6 (b) is that image capturing device several corresponding with each pattern of acquisition that disclosure one embodiment is provided are treated The image another kind exemplary scenario of checking face；

Fig. 7 is that light reflection of the processing meanss of disclosure one embodiment offer based on face to be verified in multiple image is special Property determines that whether face to be verified is a kind of illustrative methods of living body faces；

Fig. 8 (a) is the block diagram that another kind of living body faces that disclosure one embodiment is provided verify device；

Fig. 8 (b) is the schematic diagram that the living body faces shown in Fig. 8 (a) verify device；

Fig. 9 is the block diagram that another living body faces that disclosure one embodiment is provided verify device；

Figure 10 is the block diagram that another living body faces that disclosure one embodiment is provided verify device；

Figure 11 is the block diagram that a kind of living body faces that the disclosure another embodiment is provided verify device；

Figure 12 is the block diagram that a kind of living body faces that disclosure further embodiment is provided verify device；

Figure 13 is the block diagram that a kind of living body faces that disclosure further embodiment is provided verify device；And

Figure 14 is a kind of flow chart of living body faces verification method that disclosure further embodiment is provided.

Specific embodiment

To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention Accompanying drawing, the technical scheme of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this Bright a part of embodiment, rather than the embodiment of whole.Based on described embodiments of the invention, ordinary skill The every other embodiment obtained on the premise of without the need for creative work by personnel, belongs to the scope of protection of the invention.

Unless otherwise defined, technical term used herein or scientific terminology should be in art of the present invention and have The ordinary meaning understood by the personage of general technical ability." first ", " second " and similar word used in the disclosure is not Any order, quantity or importance are represented, and is used only to distinguish different ingredients.Equally, " include " or " bag Containing " etc. similar word mean the element or object that occur before the word cover occur in the word presented hereinafter element or Object and its equivalent, and it is not excluded for other elements or object.The word that " connection " or " being connected " etc. are similar to is not limited to Physics or machinery connection, and can be including electrical connection, either directly still indirectly." on ", D score, "left", "right" etc. is only used for representing relative position relation that after the absolute position for being described object changes, then the relative position is closed System is likely to correspondingly change.

Accompanying drawing is used for providing further understanding the embodiment of the present invention, and constitutes a part for description, with this Bright embodiment is used for together explaining the present invention, is not construed as limiting the invention.In the accompanying drawings, identical reference number is usual Represent same parts or step.

Attack for the photo of the above-mentioned authentication system to based on face, can be compared based on human face photo to above-mentioned Authentication system be improved.In the improved authentication system based on face, by checking whether face has essence Fine-motion is attacked effectively coping with above-mentioned photo.Further, can require that user carries out required movement, be based on so as to strengthen The attack tolerant of the authentication system of face.However, malicious user is it is possible to played using panel computer, intelligent terminal etc. Video or animation carry out the counterfeit human face action by counterfeiter, and carry out malicious attack (that is, animation is attacked) with this.It is counterfeit The video or animation of the human face action of person can be synthesized by the photo of counterfeiter using what various means were obtained by attacker, or Can be by the real video of counterfeiter.Therefore, such video or animation have very big fraudulence, based on human face action Authentication system is difficult to tackle this animation attack sometimes.Therefore, industry is still carried out in face recognition process in searching The method and apparatus of more effective and simple live body checking.

At least one embodiment of the disclosure provides a kind of living body faces and verifies device, and the living body faces verify device bag Include light source, image capturing device and processing meanss.Light source is configured to the mould that dynamic changes the irradiation light for being irradiated to face to be verified Formula；Image capturing device is configured to the image for shooting several faces to be verified corresponding with each pattern respectively；Processing meanss are matched somebody with somebody It is set to and determines whether face to be verified is living body faces based on the reflective character of face to be verified in multiple image.

In various embodiments, for example, the light source can share other light-emitting devices (for example, display screen is at least Light source in subregion, projector) as light source.Again for example, the light source can also be special light source (for example, according to certain One or more Light-Emitting Diodes or laser diode that mode is arranged, such as the flash lamp etc. of photographic head), or Combination of display screen and other kinds of light source etc..

For example, the photograph of face to be verified can be irradiated to by the dynamic glow color for changing irradiation light come dynamic change Penetrate the pattern of light.Again for example, it is also possible to pass through dynamically to change position (that is, the change photograph that irradiation light is irradiated to face to be verified Penetrate the position of light) carry out the pattern that dynamic change is irradiated to the irradiation light of face to be verified.Again for example, it is also possible to pass through dynamically same When change irradiation light glow color and irradiation light be irradiated to face to be verified position come dynamic change be irradiated to it is to be verified The pattern of the irradiation light of face.

For example, the position of face to be verified can be irradiated to by changing the position of light source dynamically to change irradiation light. Again for example, it is also possible to dynamically changing irradiation light by the angle of the emergent ray for changing light source is irradiated to face to be verified Position.

For example, living body faces checking device can judge to be verified with the video or/and image based on face to be verified Whether face is the function of living body faces.Again for example, living body faces checking device can also by the video of face to be verified or/and Image is sent to external device (ED) (for example, server), and receives whether face to be verified is sentencing for living body faces from external device (ED) Disconnected information.Again for example, living body faces checking device be also based on the face to be verified in received multiple image light it is anti- Penetrate characteristic and judge whether face to be verified is living body faces, and will determine that result is sent to external device (ED) (for example, mobile terminal).

The human skin of such as face is a kind of irreflexive material, and face is three-dimensional；In contrast, such as liquid The display screen of crystal display (LCD) or Organic Light Emitting Diode (OLED) display is considered self luminous object simultaneously And also generally include partial specular reflection component, and photo etc. is typically plane and also generally includes partial specular reflection point Amount, and either display screen or photo, its reflection characteristic on the whole are three-dimensional characters that is uniform and lacking face. The reflective character of face is different from the reflective character of display screen or photo, it is possible thereby to by based on face to be verified Reflective character judge whether face to be verified is living body faces.

Nonrestrictive explanation is carried out to various embodiments of the invention and its specific example below in conjunction with accompanying drawing, it is as follows Described by face, in these specific embodiments, different characteristic can be mutually combined in the case of not competing, so as to obtain New embodiment, these embodiments also belong to the scope of disclosure protection.

For example, Fig. 1 (a) is a kind of exemplary frame of living body faces checking device 100 that disclosure one embodiment is provided Figure, Fig. 1 (b) are the schematic diagrams that a kind of living body faces shown in Fig. 1 (a) verify device 100.As shown in Fig. 1 (a) and Fig. 1 (b), The living body faces checking device 100 includes display screen 110, image capturing device 120 and processing meanss 130.For example, image is clapped Take the photograph the side (for example, upside) that device 120 may be located at display screen 110.For example, processing meanss 130 may be located at display screen The side away from light emission direction of curtain 110.

The living body faces checking device is for example implemented as various ways, and embodiments of the invention are not limited in this respect, For example the living body faces checking device can be the special purpose device for being exclusively used in living body faces checking, and for example, the living body faces are tested Card device can also be the one of other electronic installations (for example, mobile phone, panel computer, notebook computer, intelligent glasses etc.) Individual ingredient, and for example, ingredient of the equipment such as the ingredient of gate control system or such as ATM.Now, live body Face verification device 100 need not arrange extra light source, it is possible thereby to reduce the volume of the living body faces checking device 100, weight Amount and cost.In a specific example, the living body faces checking device 100 is electronic system (such as authentication system, electricity Sub- transaction system etc.) ingredient, wherein, processing meanss 130 are single server or server cluster, display screen 110 and image capturing device 120 be respectively mobile terminal (such as smart mobile phone, panel computer etc.) display screen and and display screen Positioned at the front-facing camera of the same side, processing meanss 130 are communicated by wired or wireless mode between mobile terminal.

In the present embodiment, it is possible to use at least part of region of display screen 110 is used as light source.For example, display screen 110 are configurable to be irradiated to come dynamic change by changing shown content (that is, the position of light-emitting zone and/or color) The pattern of the irradiation light of face to be verified.For example, display screen 110 is configurable to show predetermined pattern and dynamic changes described The color of predetermined pattern and/or position.Illustrate how by changing in shown by display screen 110 with reference to Fig. 2-Fig. 5 The next dynamic change of appearance is irradiated to the position of the irradiation light of face to be verified and color, and then it is to be verified to realize that dynamic change is irradiated to The pattern of the irradiation light of face.

Fig. 2 (a)-Fig. 2 (d) shows feasible set-up mode of the light source on display screen 110.For example, display screen 110 can include display area 151 and other regions 152, at least part of region of the light source for display area 151, display screen 110 other regions 152 are displayed for aiding in user to use the living body faces to verify the information of device 100, for example, operate Information etc..For example, the display brightness of display area 151 can be increased considerably, or be chosen transmitting more multi-wavelength compared with Short light, such as blue light or green glow etc..For example, as shown in Fig. 2 (a), whole display screen 110 could be arranged to display area 151.Again for example, such as shown in Fig. 2 (b), display area 151 can be arranged on the middle section of display screen 110.Again for example, such as Shown in Fig. 2 (c), display area 151 can also be arranged on the upper area of display screen 110.Again for example, as shown in Fig. 2 (d), Display area 151 can also be arranged on the peripheral regions of display screen 110.Obviously, the position that display area 151 and light source are arranged Fig. 2 (a)-Fig. 2 (d) is not limited to shape and illustrates that mode, display area 151 and light source can also for example be arranged on display screen The shape of 110 lower zone, left field or right side area, display area 151 and light source can also be circle, triangle, Ellipse etc., embodiments herein is not construed as limiting to this.

Fig. 3 (a) is the position that the dynamic that disclosure one embodiment is provided changes the irradiation light for being irradiated to face to be verified A kind of method.For example, display area 151 can include a guidance field 153, and the guidance field 153 is used to guide user Eyes are alignd with precalculated position 154.For example, the position of the light-emitting zone of display area 151 can change over.Such as Fig. 3 Shown in (a), in T₁Moment, the light-emitting zone of display area 151 are located at first position [W₁], the light-emitting zone includes display area The 151 all display pixels positioned at first position column；In T₂Moment, the light-emitting zone of display area 151 are located at second Position [W₂]；In T_nMoment, the light-emitting zone of display area 151 are located at nth position [W_N]；In T_mMoment, display area 151 Light-emitting zone is located at M positions [W_M].That is to say, light-emitting zone can be dynamic on the line direction of display area 151 with the time Change.In the case where the position of the light-emitting zone of display area 151 changes relative to face to be verified, light-emitting zone institute The light of transmitting is irradiated to the position of face and also correspondingly will change, therefore can realize that the dynamic of the position of irradiation light changes Become, and it is possible thereby to realize that dynamic changes the pattern of the irradiation light for being irradiated to face to be verified.

Obviously, the time dependent form of the light-emitting zone of display area 151 is not limited to the situation shown in Fig. 3 (a), may be used also Being Fig. 3 (b) and the situation shown in Fig. 3 (c).For example, as shown in Fig. 3 (b), light-emitting zone is in T_nMoment includes display area 151 positioned at N ' positions [W_N’] all display pixels for being expert at, thus light-emitting zone can be with the time in display area 151 Column direction on dynamic change.Again for example, such as shown in Fig. 3 (c), light-emitting zone is in T_nMoment includes being located at for display area 151 The (N, N ') position [W_N, W_N’] place all display pixels, thus light-emitting zone can with the time display area 151 row Dynamic change on direction and column direction.For example, light-emitting zone change frequency per minute on line direction or/and column direction and Comprising display pixel number can be set according to practical application request, embodiments herein is not limited to this.

For example, Fig. 4 is the dynamic face for changing the irradiation light for being irradiated to face to be verified that disclosure one embodiment is provided A kind of method of color.For example, display area 151 is in T₁The glow color at moment can be the first color 161, in T₂Moment send out Light color can be the second color 162, in T_nThe glow color at moment can be N colors 163, in T_mThe glow color at moment Can be M colors 164.That is to say, the glow color of display area 151 can be with time dynamic.By controlling to show Screen 110 simultaneously makes the glow color of display area 151 with time dynamic, it is possible to achieve the dynamic of the color of irradiation light changes Become, and it is possible thereby to realize that dynamic changes the pattern of the irradiation light for being irradiated to face to be verified.For example, display area 151 send out The area of the light-emitting zone of the number of times and display area 151 of light color conversion per minute and position can be according to practical application requests Set, embodiments herein is not limited to this.

For example, Fig. 5 (a) is that the dynamic that disclosure one embodiment is provided changes the irradiation light for being irradiated to face to be verified Position and a kind of method of color.As shown in Fig. 5 (a), in T₁Moment, the light-emitting zone of display area 151 are located at W_1’Place, and The glow color of light-emitting zone can be the first pattern color 171；In T₂Moment, the light-emitting zone of display area 151 are located at W_2’ Place, and the glow color of light-emitting zone can be the second pattern color 172；In T_nMoment, the light-emitting zone of display area 151 Positioned at W_N’Place, and the glow color of light-emitting zone can be N ' pattern colors 173；In T_mMoment, display area 151 send out Light region is located at W_M’Place, and the glow color of light-emitting zone can be M ' pattern colors 174.That is to say, light-emitting zone Position and color are with time dynamic.By control display screen curtain 110, and make the position of the light-emitting zone of display area 151 Put with glow color with time dynamic, it is possible to achieve the dynamic change of irradiation optical position and color, and it is possible thereby to realize Dynamic changes the pattern of the irradiation light for being irradiated to face to be verified.Obviously, light-emitting zone can with the time in display area 151 Column direction or the line direction and column direction dynamic change in display area 151, will not be described here.

For example, Fig. 5 (b) shows another kind of controlling party for irradiating optical position and color that disclosure one embodiment is provided Method.As shown in Fig. 5 (b), display area 151 is in T₁Moment shows the first pattern 181；In T₂Moment shows the second pattern 182； T_nMoment shows N patterns 183；In T_MMoment shows M patterns 184.The color shown at 151 diverse location of display area Time dependent rule it is relevant with the color location for being shown, that is to say 151 various location of display area The color for being shown defers to different Changing Patterns.Therefore can realize that irradiating optical position and the dynamic of color changes, and thus Can realize that dynamic changes the pattern of the irradiation light for being irradiated to face to be verified.For example, the color institute for being shown at diverse location The Changing Pattern deferred to can be set according to practical application request, and embodiments herein is not specifically limited to this.

For example, the rule deferred to by the pattern of the irradiation light that 110 dynamic change of display screen is irradiated to face to be verified can To be selected by practical application request, for example, can select from the various ways for prestoring in advance, embodiments herein pair This is not specifically limited.

For example, display screen 110 can change the pattern of the irradiation light for being irradiated to face to be verified according to predetermined rule.Example Such as, the position of the light-emitting zone of display area 151 can sequentially move to display screen according to from the left side of display screen 110 The rule dynamic on 110 right side changes.Again for example, the glow color of the light-emitting zone of display area 151 can be according to per minute Sequentially show that red, green, blue 20 times rule dynamic change.

For example, display screen 110 can be irradiated to the pattern of the irradiation light of face to be verified with the change of stochastic and dynamic.Under Face illustrates that by taking color as an example the change of stochastic and dynamic is irradiated to a kind of illustrative methods of the pattern of the irradiation light of face to be verified. (1) obtain unique identifier.For example, the unique identifier can be in the initial time of each living body faces checking by processing meanss 130 obtain.For example, the unique identifier can control communicator by processing meanss 130 and verify device 100 from living body faces Outside device (for example, cloud server) obtain.Again for example, the unique identifier can be verifying device by living body faces 100 processing meanss 130 itself are generated.For example, the method for the living body faces checking device 100 generation unique identifier can be joined See random number generating techniques and globally unique identifier generation technique etc., embodiments of the invention are not limited in this respect.For example, should Unique identifier can fail after this living body faces checking terminates immediately.Again for example, the unique identifier can be with this Secondary living body faces checking not yet terminates, but fails after the unique identifier has generated a period of time (for example, 3 minutes).(2) Sequence of real numbers P [i] of the length for T is generated according to unique identifier, the sequence of real numbers corresponds to time-varying image, example Such as, P [i] is corresponding to the i-th two field picture.The generation method of sequence of real numbers may refer to existing AES, the enforcement of the application Example is not limited to this.For example, hash algorithm (i.e. hash algorithm) can be passed through and generates the sequence of real numbers that the length is T.For example, The length of sequence of real numbers can be set by practical application request, and here is not limited.For example, sequence of real numbers P [i] can meet Sum (P [i])=0, that is to say that obtained value of suing for peace to sequence of real numbers P [i] can be zero.(3) at least two are obtained different Color.For example, at least two different color can be set in advance in living body faces checking device 100.For example, for color In the coordinate system (R, G, B) of color space, it is assumed that with 0 as intensity is minimum, 255 as maximum intensity, then can specify (0,0,255), (0,255,0), (255,0,0) and (128,128,128) as predetermined color.Again for example, at least two different color is also Can be generated according to unique identifier, the method for generating at least two different colors according to unique identifier may refer to existing AES, will not be described here.Again for example, at least two different color can also be generated at random, and concrete grammar can Referring to random number generating techniques, will not be described here.(4) obtained according to the different color of sequence of real numbers and at least two and shown The rgb value of the shown color under (frame) not in the same time of screen 110.For example, with preset or generate two kinds of colors (r1, g1, B1) and as a example by (r2, g2, b2), the color (r [i], g [i], b [i]) of the i-th two field picture shown by display screen 110 can be Following form：R [i]=r1+ (r2-r1) × P [i], g [i]=g1+ (g2-g1) × P [i], b [i]=b1+ (b2-b1) × P [i].Can realize that by above-mentioned steps the change of stochastic and dynamic is irradiated to the color of the irradiation light of face to be verified.It is irradiated to and treats The position of the irradiation light of checking face and it is irradiated to the color of irradiation light and the stochastic and dynamic of position of face to be verified and changes Become and can also pass through similar method realization, will not be described here.Thus display screen 110 can be irradiated with the change of stochastic and dynamic To the pattern of the irradiation light of face to be verified.

For example, image capturing device 120 is configurable to obtain recorded video or by way of being continuously shot multiframe picture Take the image of several faces to be verified corresponding with each pattern respectively.For example, using continuous by image capturing device 120 In the case of shooting the mode of multiframe picture, image capturing device 120 can be synchronous with display device, it is possible thereby to realize passing through The mode for shooting multiframe picture obtains the image of several faces to be verified corresponding with each pattern respectively, for example, can shoot Picture in add the identification information such as such as time in order to carry out time unifying in verification process afterwards.For example, recorded video Duration or shoot picture frame number can be set by practical application request, here is not limited.

For example, image capturing device 120 can be polytype, for example, can include at least one photographic head, and image Head can include cmos image sensor or ccd image sensor etc.；Again for example, when image capturing device 120 can include two During individual photographic head, two photographic head can be with mutually the same, it is also possible to different, and the resolution of a such as photographic head is higher and another Individual resolution is relatively low, or photographic head for full color photographic head, another is black and white photographic head, etc..The present invention other The image capturing device of embodiment is similar to therewith.

Obtain with reference to Fig. 6 (a) and Fig. 6 (b) explanation image capturing devices 120 that corresponding with each pattern several are to be tested The illustrative methods of the image of witness's face.For example, face to be verified may be located at image capturing device 120 towards display screen The side of 110 light emission direction, face to be verified can be living body faces 193 or second display screen 194 (that is, for malice The display screen of attack) shown by facial image or/and video.Fig. 6 (a) and Fig. 6 (b) are respectively illustrated in face to be verified In the case of facial image or/and video shown by living body faces 193 and second display screen 194, image capturing device The illustrative methods of 120 images for obtaining several faces to be verified corresponding with each pattern.

For example, being at least partly emitted onto on face to be verified for the light that the light-emitting zone of display area 151 sends, treats The checking irradiation light that is mapped on face to be verified of face control at least partly reflects, the reflected light of face to be verified it is at least part of Gathered by image capturing device 120.For example, the original video or/and image gathered by image capturing device 120 can be designated as A [i], the frame number of i representative images.

For example, Fig. 6 (a) is that the image capturing device that disclosure one embodiment is provided obtains corresponding with each pattern many A kind of exemplary scenario of image (that is, scene of the face to be verified for living body faces 193) of face to be verified.Such as Fig. 6 (a) institutes Show, in the case where face to be verified is living body faces 193, the light gathered by image capturing device 120 is face to be verified Reflection light 191 and ambient light (not shown).In the pattern (color of the irradiation light being irradiated on living body faces 193 Or/and position) change in the case of, image capturing device 120 obtain live body corresponding with the pattern of each irradiation light Change according to the pattern of each irradiation light the image of face 193 correspondence change occurs.

For example, Fig. 6 (b) is that the image capturing device that disclosure one embodiment is provided obtains corresponding with each pattern many (that is, face to be verified is the face shown by second display screen 194 to the image another kind exemplary scenario of face to be verified The scene of image or/and video).As shown in Fig. 6 (b), it is the face figure shown by second display screen 194 in face to be verified In the case of picture or/and video, the light gathered by image capturing device 120 is the reflection light 191, second of face to be verified The self-luminous light 192 and ambient light (not shown) of display screen 194.In above-mentioned three kinds of light, only second shows The self-luminous light 192 of display screen curtain 194 in image capturing device 120 can be used for forming facial image.Second display screen 194 and the reflection light 191 of shown face to be verified generally include partial specular reflection component, and cannot be used in figure As facial image is formed in filming apparatus 120, but in the form of the noise of the facial image formed by image capturing device 120 Exist.Therefore, in the case where the pattern (color or/and position) of the irradiation light being irradiated on living body faces changes, i.e., Make second display screen 194 and its reflection light 191 of the face to be verified for showing have change slightly, also hardly affect The reflective character of the face to be verified shown by second display screen 194.It is possible thereby to pass through the light reflection of face to be verified Facial image or/and video shown by characteristic differentiation living body faces 193 and second display screen 194, that is to say, can pass through The light embodied by the image of several faces to be verified corresponding with each irradiation optical mode that image capturing device 120 is obtained is anti- Penetrate characteristic to determine whether face to be verified is living body faces.

For example, the processing meanss 130 can include processor and memorizer, and the processor is, for example, CPU (CPU) or the processing unit with data-handling capacity and/or the other forms of instruction execution capability, can with X86-based or ARM frameworks realize that for example, the processor can be general processor, and can also be single-chip microcomputer, microprocessor, numeral letter Number processor, special picture processing chip or field programmable logic array etc..The processing meanss of following embodiments with it is such Seemingly.Memorizer can for example include volatile memory and/or nonvolatile memory, for example, can include read only memory (ROM), polytype storage device such as hard disk, flash memory or storage medium.Correspondingly, the memorizer can be implemented as one or Multiple computer programs, the computer program can include various forms of computer-readable recording mediums, One or more computer program instructions can be stored on the computer-readable recording medium.Processor can run the journey Sequence is instructed, to realize the function and/or other desired functions of control device in the embodiment of the present disclosure hereinafter described, example Such as can determine whether face to be verified is living body faces based on the reflective character of face to be verified in multiple image.The storage Device can also store other various application programs and various data, such as corresponding with each pattern acquired in image capturing device Several faces to be verified image, and various data etc. that the application program is used and/or produced.

For example, processing meanss 130 are configurable to treat based on the reflective character determination of face to be verified in multiple image Whether checking face is living body faces.For example, processing meanss 130 are directed to same face spy in being configurable to choose multiple image The part levied, is then based on the reflective character of part, and determines whether face to be verified is live body people according to reflective character Face.For example, processing meanss 130 are also configured as the part for choosing same position in multiple image, then the light of calculating section Reflection characteristic, and it is verified whether face to be verified is living body faces according to reflective character determination.For example, processing meanss 130 Determine that whether face to be verified is that the method for living body faces can be selected according to practical application request, embodiments herein This is not specifically limited.

For example, the light reflection that processing meanss 130 can be by the step shown in Fig. 7 based on face to be verified in multiple image Characteristic determines whether face to be verified is living body faces.

Step S110：Image semantic classification；

Step S120：Information retrieval；

Step S130：Living body faces judge.

For example, in step S110, the purpose of Image semantic classification is to ensure the size of destination object, position and quality Concordance.For example, according to practical application request, destination object can be the subregion of whole human face region or face, This is not specifically limited.

Again for example, due to face during recorded video or shoot multi-frame images it is possible that displacement, can make Make position of the destination object in multiframe facial image in each image consistent with the method for alignment compensation, phase one herein Cause refer to the position of destination object it is approximate it is constant do not require that before and after it is identical.

For example, the alignment of destination object can be realized by following alignment compensation algorithms.(1) according to original video Or/and image A [i] calculates positioning image B [i] and signal pattern C [i].For example, can first by (r2-r1, g2-g1, b2- B1) it is normalized to unit vector (u, v, w)；Then, the color to each pixel in original video or/and image A [i] (r, g, b), the color (r', g', b') of corresponding position pixel in calculating positioning image B [i], r'=r- (r × u+g × v+b × W) × u, g'=g- (r × u+g × v+b × w) × v, b'=b- (r × u+g × v+b × w) × w；Finally, signal calculated image C Color k of corresponding position pixel in [i], k=r × u+g × v+b × w.(2) the extraction human face region in B [0].(3) in B [1] and on later image (that is, the first frame and later image) (for example, Lucas Kanade are followed the trail of and are calculated to run tracing algorithm Method), and B [1] and later image are alignd with the human face region in B [0], record the alignment parameters of each frame.(4) use Signal pattern C [i] is alignd by same group of alignment parameters, and obtains the i-th two field picture (x, y) position in the signal pattern C after alignment Value C [i, x, y] at place.

For example, although step S110 can lift the efficiency and reliability for determining that whether face to be verified is living body faces, It is not necessary to the step of performing, can be selected according to practical application request, embodiments herein is not done to this specifically Limit.

For example, the purpose that information (signal) is extracted in step S120 is in order to from regarding acquired in image capturing device 120 The destination object caused because of the color or/and change in location of the pattern shown by display screen 110 is extracted in frequency or multiple image Image change.For example, extract the target caused because of the color or/and change in location of the pattern shown by display screen 110 The changing method of the image of object can be selected according to practical application, and embodiments herein is not specifically limited to this.Example Such as, the method that can pass through to calculate associated picture S [x, y] (that is, calculates the correlation of multiple image and the pattern of corresponding irradiation light Property) realize that above- mentioned information is extracted.For example, phase can be calculated according to the signal pattern C [i, x, y] after alignment and sequence of real numbers P [i] Close image S [x, y]=sum (C [i, x, y] * P [i]).For example, the physical meaning of associated picture S [x, y] is：In face to be verified It is facial image in the case of for living body faces；Face to be verified be second display screen 194 shown by facial image or/ In the case of video, it is impossible to produce corresponding facial image.Signal pattern C [i, x, y] and real number after calculating alignment The correlation of sequence P [i], the signal (for example, bias light) that will can be inconsistent with the irradiation optical mode being irradiated on face to be verified Filter.Additionally, if sequence of real numbers P [i] is to be generated according to unique identifier in real time, attacker be difficult to generate at once with uniquely The corresponding human face animation sequence of identifier, thus can further enhance the safety of face verification device.

For example, in order to ensure the reliability of institute's extraction information (signal) and living body faces judged result in step S120, With after associated picture S [x, y] is obtained, the reliability of extracted signal before step S130 is carried out, can be calculated.Example Such as, the reliability of above-mentioned extracted signal can be calculated by following manner.

(1) first, k1=sum (S [x, y] ^2) is calculated according to associated picture S [x, y].

(2) and then, according to k1 and alignment after signal pattern C [i, x, y] calculate k2=k1/sum_ { x, y } variance_ i(C[i,x,y])。

(3) according to the numerical value for calculating the k1 and k2 for obtaining, and the reliability of the extracted signal of threshold decision set in advance Property.For example, (for example, can represent that image taking is filled in the case that the numerical value in k1 and k2 is not reaching to threshold value set in advance Put 120 and the high light outside irradiation light faced in shooting image), user can be pointed out to change position and (for example, to be found and avoided sun Where light direct beam) after carry out face verification again.

For example, the purpose that living body faces judge in step S130 is the destination object for judging to be extracted in the step s 120 Whether the change of image meets the Changing Pattern of face.It is for instance possible to use the method for machine learning realizes above-mentioned living body faces Judge.For example, can be by change information (for example, the phase of destination object of the image of the destination object extracted in step S120 Close image S [x, y]) it is input in the good grader of precondition, and discriminate whether to be obtained by shooting living body faces by grader The image (that is, determining by the grader of training in advance whether face to be verified is living body faces) for obtaining.

For example, above-mentioned grader can be convolutional neural networks (Convolutional neural networks), support Vector machine (Support Vector Machine) or other applicable graders, embodiments herein do not do concrete limit to this It is fixed.For example, grader can be trained by following methods.(1) first, the living body faces checking device for being provided using the present embodiment Facial image or/and video acquisition face video or many shown by 100 pairs of substantial amounts of living body faces and second display screen 194 Two field picture；(2) and then, obtain the associated picture S [x, y] of above-mentioned gathered face video or multiple image；(3) it is last, will be upper Associated picture S [x, y] and corresponding image are stated whether by shooting the information input grader of the image that living body faces are obtained, It is possible thereby to realize the training of grader.

For example, processing meanss 130 can also be directly using the method for machine learning based on face to be verified in multiple image Reflective character determine whether face to be verified is living body faces.For example, can be by unique identifier (or sequence of real numbers P [i]) and image capturing device 120 acquired in video or multiple image be input to the good grader of precondition and (for example, follow Ring neutral net) in, and discriminated whether by shooting the image that living body faces are obtained by grader.

For example, Fig. 8 (a) is the exemplary of another kind of living body faces checking device 200 that disclosure one embodiment is provided Block diagram, Fig. 8 (b) are the schematic diagrams that the living body faces shown in Fig. 8 (a) verify device 200.As shown in Fig. 8 (a) and Fig. 8 (b), should Living body faces checking device 200 can include projection arrangement 210 (for example, micro projector), image capturing device 220 and process Device 230.For example, image capturing device 220 can be arranged at living body faces checking devices 200 towards projection arrangement 210 The side of light emission direction.For example, the living body faces checking device 200 also includes display screen, and the display screen can be used to show Assist user that the relevant information of device 200 is verified using the living body faces.For example, image capturing device 220 may be located at display The side (for example, upside) of screen.For example, projection arrangement 210 may be located at the side (for example, upside) of display screen.For example, Processing meanss 230 may be located at the side away from light emission direction of display screen.The living body faces checking device 200 is for example concrete It is embodied as various ways, for example the living body faces checking device 200 can be exclusively used in the special purpose device that living body faces are verified, example The ingredient of the equipment such as ingredient such as, as gate control system or such as ATM, but for example, the living body faces are verified Device 200 can also be the one of other electronic installations (for example, mobile phone, panel computer, notebook computer, intelligent glasses etc.) Individual ingredient.

For example, in the present embodiment, it is possible to use the light source in projection arrangement 210 verifies device 200 as living body faces Light source.For example, projection arrangement 210 is configurable to the pattern that dynamic changes the irradiation light for being irradiated to face to be verified.For example, Can pass through to control position (that is, projection arrangement 210 light source of the view field relative to face to be verified of projection arrangement 210 Angle of the emergent ray relative to projection arrangement 210) come dynamic change irradiation light position, view field can be according to practical application Demand is located at the optional position of face to be verified.Again for example, it is also possible to by control the glow color of 210 light source of projection arrangement come Dynamic changes the color of irradiation light.Again for example, it is also possible to (that is, be thrown come dynamic by changing the content shown by projection arrangement 210 The position in shadow zone domain or/and glow color) change the pattern of light that projection arrangement 210 sends, treat so as to dynamic change is irradiated to The pattern of the irradiation light of checking face.For example, the position of the view field of projection arrangement 210 and the control method of glow color can With the related content referring to projection display technique, will not be described here.

For example, image capturing device 220 is configurable to shoot several faces to be verified corresponding with each pattern respectively Image.For example, processing meanss 230 are configurable to determine based on the reflective character of face to be verified in multiple image to be tested Whether witness's face is living body faces.For example, the related content of image capturing device 220 and processing meanss 230 may refer to public A kind of living body faces for opening one embodiment offer verify the embodiment of device, will not be described here.The living body faces checking dress 200 checkings for realizing living body faces are put, and thus improves the safety of face verification device.

For example, Fig. 9 is the exemplary frame of another living body faces checking device 300 that disclosure one embodiment is provided Figure.As shown in figure 9, the living body faces checking device 300 can include light source 310, image capturing device 320 and processing meanss 330.For example the living body faces checking device 300 can be the special purpose device for being exclusively used in living body faces checking, for example, as gate inhibition The ingredient of the equipment such as the ingredient of system or such as ATM, but for example, the living body faces checking device 300 may be used also Being an ingredient of other electronic installations (for example, mobile phone, panel computer, notebook computer etc.).

For example, the light source 310 includes luminescence unit 311 and reflection unit 312.The light source 310 is configurable to dynamic and changes Change is irradiated to the pattern of the irradiation light of face to be verified.The type of the luminescence unit included by light source 310, outgoing wavelength are (i.e., Glow color) and quantity can according to practical application need be selected, embodiments herein is not especially limited to this.Example Such as, the light source 310 can include the light emitting diode of red, green and blueness.For example, can by control red, green and The glow color of the Ratio control light source 310 of blue lumination of light emitting diode intensity, it is possible thereby to realize that dynamic changes irradiation To the color and pattern of the irradiation light of face to be verified.For example, reflection unit 312 is configurable to change luminescence unit 311 Emergent ray verifies the direction of device 300 relative to living body faces, it is possible thereby to dynamic changes the photograph for being irradiated to face to be verified Penetrate position and the pattern of light.For example, the type of reflection unit 312 can be set according to practical application request, the reality of the application Apply example to be not specifically limited this.For example, reflection unit 312 can be spatial light modulator (for example, digital micro-mirror, liquid Brilliant light valve etc.), or the reflecting optics with angle regulating function.

For example, image capturing device 320 is configurable to shoot several faces to be verified corresponding with each pattern respectively Image.For example, processing meanss 330 are configurable to determine based on the reflective character of face to be verified in multiple image to be tested Whether witness's face is living body faces.For example, the related content of image capturing device 320 and processing meanss 330 may refer to public A kind of living body faces for opening one embodiment offer verify the embodiment of device, will not be described here.The living body faces checking dress 300 checkings for realizing living body faces are put, and thus improves the safety of face verification device.

For example, Figure 10 is the exemplary frame of another living body faces checking device 400 that disclosure one embodiment is provided Figure.As shown in Figure 10, the living body faces checking device 400 can include light source 410, image capturing device 420 and processing meanss 430.For example the living body faces checking device 400 can be the special purpose device for being exclusively used in living body faces checking, for example, as gate inhibition The ingredient of the equipment such as the ingredient of system or such as ATM.

For example, the light source 410 includes luminescence unit 411 and translating device 412, and luminescence unit 411 is arranged on translating device On 412.The light source 410 is configurable to the pattern that dynamic changes the irradiation light for being irradiated to face to be verified.410 institute of light source Including the type of luminescence unit, outgoing wavelength (that is, glow color) and quantity can need be selected according to practical application, Embodiments herein is not especially limited to this.For example, the light source 410 can include luminous the two of red, green and blueness Pole pipe.For example, the Ratio control light source 410 of the lumination of light emitting diode intensity of red control, green and blueness can be passed through Glow color, it is possible thereby to realize that dynamic changes the color and pattern of the irradiation light for being irradiated to face to be verified.For example, translation dress Put 412 to be configurable to change the position of luminescence unit 411, it is possible thereby to dynamic changes the irradiation light for being irradiated to face to be verified Position and pattern.For example, the type of translating device 412 can be set according to practical application request, embodiments herein This is not specifically limited.For example, translating device 412 can be one-dimensional motorized precision translation stage, two-dimentional motorized precision translation stage or can be with Realized by guide rail etc. and for example pass through step motor drive.

For example, image capturing device 420 is configurable to shoot several faces to be verified corresponding with each pattern respectively Image.For example, processing meanss 430 are configurable to determine based on the reflective character of face to be verified in multiple image to be tested Whether witness's face is living body faces.For example, the related content of image capturing device 420 and processing meanss 430 may refer to public A kind of living body faces for opening one embodiment offer verify the embodiment of device, will not be described here.The living body faces checking dress 400 checkings for realizing living body faces are put, and thus improves the safety of face verification device.

For example, Figure 11 is the exemplary frame that a kind of living body faces that the disclosure another embodiment is provided verify device 500 Figure.As shown in figure 11, the living body faces checking device 500 can include that light source 510, the transmission of image capturing device 520, information connect Receiving apparatus 530 and processing meanss 540.For example, the living body faces checking device 500 can be that other electronic installations are (for example, mobile Phone, panel computer, notebook computer etc.) an ingredient.For example the living body faces checking device 500 can also be again Be exclusively used in the special purpose device of living body faces checking, for example as gate control system the equipment such as ingredient or ATM composition portion Grade.

For example, light source 510 is configurable to the pattern that dynamic changes the irradiation light for being irradiated to face to be verified.For example, should Light source 510 can share other light-emitting devices (for example, at least part of region of display screen, the light source in projector) as light Source.Again for example, the light source 510 can also be special light source (for example, Light-Emitting Diode or laser diode).For example, image is clapped Take the photograph device 520 to be configurable to shoot the image of several faces to be verified corresponding with each pattern respectively.For example, light source 510 A kind of living body faces checking device of disclosure one embodiment offer is provided with the related content of image capturing device 520 Embodiment, will not be described here.

For example, information transceiver 530 is configurable to the image of several faces to be verified be sent to server, And determine whether to be verified face be live body people based on the reflective character of face to be verified in multiple image from server reception The judgement information of face, for example, the information transceiver 530 can pass through network or other technologies by several faces to be verified Image send to server, and received based on face to be verified in multiple image from server by network or other technologies Reflective character determines that whether face to be verified is the judgement information of living body faces.For example, the network can be the Internet, nothing Line LAN, mobile communications network etc., described other technologies can for example include Bluetooth communication, infrared communication etc..For example, it is described Server can be universal server or tailored version server, can be virtual server or Cloud Server etc..Information sends Reception device 530 can include that modem, network adapter, bluetooth send receiving unit or infrared transmission receiving unit Deng the operation such as example the information that sends or receive can also being carried out encoding, be decoded.

For example, processing meanss 540 can be performed based on judgement information and are verified or not by operation.Due to based on several In image, to determine that whether face to be verified is that the judgement of living body faces is operated in server complete for the reflective character of face to be verified Into, therefore the computing resource of the processing meanss 540 can be saved, it is possible thereby to reduce requirement to 540 performance of processing meanss with And living body faces verify the manufacturing cost of device 500, it is possible to lift the experience of user.The living body faces checking device 500 can To realize the checking of living body faces, and then improve the safety of face verification device 500.

For example, Figure 12 is a kind of exemplary frame of living body faces checking device 600 that disclosure further embodiment is provided Figure.As shown in figure 12, the living body faces checking device 600 can include information transceiver 610 and processing meanss 620. For example, the function of the living body faces checking device 600 can be realized by server that the server can be universal server Or tailored version server, can be virtual server or Cloud Server etc..Information transceiver 610 can include modulatedemodulate Adjust device, network adapter, bluetooth send receiving unit or infrared transmission receiving unit etc., for example can also to send or receive Information such as carries out encoding, decodes at the operation.

For example, the information transceiver 610 is configurable to from client the image for receiving several faces to be verified. For example, the processing meanss 620 are configurable to determine witness to be tested based on the reflective character of face to be verified in multiple image Whether face is living body faces.For example, the information transceiver 610 is also configured as processing meanss 620 being based on several In image, the reflective character of face to be verified determines that whether face to be verified is that the judgement information of living body faces is sent to client End.For example, the information transceiver 610 can realize sending and receiving for information for example, by network or other technologies, The network can be the Internet, WLAN, mobile communications network etc., and described other technologies for example can be logical including bluetooth Letter, infrared communication etc..For example, the reflective character with regard to processing meanss 620 based on face to be verified in multiple image determines and treats Whether checking face may refer to a kind of living body faces that disclosure one embodiment provides and tests for the related content of living body faces The embodiment of card device, will not be described here.The living body faces checking device 600 can realize the checking of living body faces, and then Improve the safety of face verification device 600.For example, the living body faces checking device 500 shown in Figure 11 as client and Living body faces checking device 600 shown in Figure 12 can be fitted to each other as server and constitute living body faces checking system, the visitor Family end and server may be located at same place or different location.

For example, Figure 13 is a kind of exemplary frame of living body faces checking device 700 that disclosure further embodiment is provided Figure.As shown in figure 13, the living body faces checking device 700 can include processor 710 and memorizer 720.Deposit in memorizer 720 Computer program instructions are contained, computer program instructions perform following steps when being run by processor 710：

Step S710：Obtain dynamic change be irradiated to face to be verified irradiation light pattern when shoot respectively with respectively The image of corresponding several faces to be verified of individual pattern；And

Step S720：Reflective character based on face to be verified in multiple image determines whether be verified face to be verified For living body faces.

For example, the processor 710 can be CPU (CPU) or have data-handling capacity and/or instruction With X86-based or ARM frameworks, the processing unit of the other forms of executive capability, can realize that for example, the processor 710 can be General processor, and can also be single-chip microcomputer, microprocessor, digital signal processor, special picture processing chip or existing Field programmable logic array etc..

For example, the memorizer 720 can for example include volatile memory and/or nonvolatile memory, for example can be with Including polytype storage device or storage mediums such as read only memory (ROM), hard disk, flash memories.Correspondingly, the memorizer 720 can be implemented as one or more computer programs, and the computer program can include various forms of meters Calculation machine readable storage medium storing program for executing, can store one or more computer program instructions on the computer-readable recording medium.

For example, the processor 710 can run described program instruction, to realize controlling in the embodiment of the present disclosure hereinafter described The function of device processed and/or other desired functions, for example can be based on the light reflection of face to be verified in multiple image Characteristic determines whether face to be verified is living body faces.

For example, the memorizer 720 can also store other various application programs and various data, such as image capturing device The image of acquired several faces to be verified corresponding with each pattern, and the application program use and/or produce Various data etc..

For example, in step S710, can pass through dynamic change irradiation light color and/or position (it is, for example possible to use The color of the control dynamic change irradiation light of light source of processor 710 and/or position) carry out dynamic change and be irradiated to face to be verified The pattern of irradiation light.For example, dynamic can be selected to change the color of irradiation light and/or the side of position according to practical application request Method.For example, the position of face to be verified can be irradiated to by changing the position of light source dynamically to change irradiation light.And example Such as, the position of face to be verified can also be irradiated to by changing the angle of the emergent ray of light source dynamically to change irradiation light Put.

For example, in the case of at least part of region of the light source for display screen, show on display screen by being changed The content shown carrys out the pattern of the light that dynamic change display screen sends, so as to dynamic change is irradiated to the irradiation light of face to be verified Pattern.For example, by showing predetermined pattern on the display screen, and color and/or the position of predetermined pattern can be changed Change the content shown on display screen.For example, the position of the light-emitting zone as light source of display screen can be in line direction It is upper, in a column direction or in the row direction with change with the time on column direction, due to light-emitting zone position relative to Face to be verified changes, and the light launched by light-emitting zone is irradiated to the position of face and also correspondingly will change, because This can realize the dynamic change of the position of irradiation light, and it is possible thereby to realize that dynamic changes the irradiation for being irradiated to face to be verified The pattern of light.For example, the glow color of the light-emitting zone as light source of display screen can change with the time, and thus may be used The pattern of the irradiation light of face to be verified is irradiated to dynamic change.Obviously, the light-emitting zone as light source of display screen Position and glow color can be changed with the time simultaneously, and it is possible thereby to dynamic changes the irradiation light for being irradiated to face to be verified Pattern.

For example, in the case where the light source using projection arrangement is used as the light source of the living body faces checking device, Ke Yitong The view field for crossing control projection arrangement carrys out dynamic changing relative to the position of face to be verified or/and the glow color of view field Become position or/and the color of irradiation light, and it is possible thereby to dynamic changes the pattern of the irradiation light for being irradiated to face to be verified.

For example, in the case where light source includes special luminescence unit, it is possible to use reflection unit changes going out for luminescence unit The direction (for example, verifying device relative to living body faces) for penetrating light or/and the position for changing luminescence unit using translating device Method dynamically change the position of the irradiation light for being irradiated to face to be verified.For example, include in special luminescence unit red, green In the case of the blue light emitting diode of normal complexion or laser diode, can pass through to control luminous the two of red, green and blueness The glow color of the Ratio control light source of pole tube light-emitting intensity, and it is possible thereby to realizing that dynamic changes is irradiated to face to be verified The color of irradiation light.The position or/and color that the irradiation light of face to be verified is irradiated to by dynamic change can be with dynamic change It is irradiated to the pattern of the irradiation light of face to be verified.

For example, the mould of the irradiation light of face to be verified can be irradiated to according to the change of predetermined rule or stochastic and dynamic Formula.For example, in the case of the pattern of the irradiation light that the change of stochastic and dynamic is irradiated to face to be verified, can be in each live body The initial time of face verification generates the unique identifier corresponding with this face live body checking, then according to unique identifier Time dependent sequence of real numbers is generated, and realizes that dynamic changes the irradiation light for being irradiated to face to be verified based on sequence of real numbers Pattern.For example, in living body faces, the unique identifier can verify that device being internally generated, the unique identifier can with The outside (for example, cloud server) of living body faces checking device generates and passes to living body faces checking device.For example, dynamic Change is irradiated to the living body faces of particular content disclosure one embodiment offer of the pattern of the irradiation light of face to be verified and tests The embodiment of card device, will not be described here.

For example, in the case of the pattern of the irradiation light that dynamic change is irradiated to face to be verified, can for example using figure As harvester shoots the image of several faces to be verified corresponding with each pattern respectively, for example, can record and treat comprising several The video of the image of checking face can also be continuously shot multiframe picture.In the situation that face to be verified is living body faces Under, the light gathered by image capturing device is the reflection light of face to be verified and ambient light (not shown).Shining In the case that the pattern (color or/and position) of the irradiation light being mapped on living body faces changes, image capturing device is obtained Living body faces corresponding with the pattern of each irradiation light image the change according to the pattern of each irradiation light is occurred it is right Should change.

Face to be verified be second display screen (for malicious attack display screen) shown by facial image or/ In the case of video, the light gathered by image capturing device is the reflection light of face to be verified, second display screen Self-luminous light and ambient light (not shown).As second display screen is self-luminous body, and in image taking In three kinds of light that device is gathered, the self-luminous light of only second display screen can be used for shape in image capturing device Into facial image.The reflection light of second display screen and shown face to be verified generally includes partial specular reflection point Amount, and cannot be used for facial image is formed in image capturing device, but the face figure formed with image capturing device In the form of the noise of picture.Therefore, the pattern (color or/and position) in the irradiation light being irradiated on living body faces changes In the case of change, even if the reflection light of the face to be verified of second display screen and its display has change slightly, also almost The reflective character of the face to be verified shown by second display screen is not interfered with.It is possible thereby to pass through the light of face to be verified Facial image or/and video shown by reflection characteristic differentiation living body faces and second display screen, that is to say, can be by figure The light reflection embodied by the image of several faces to be verified corresponding with each irradiation optical mode obtained as filming apparatus is special Property is determining whether face to be verified is living body faces.For example, the portion of same face characteristic is directed to during multiple image can be chosen Point, the reflective character of the part of same face characteristic is then calculated, and whether face to be verified is determined according to reflective character For living body faces.Again for example, it is also possible to choose the part of same position in multiple image, identical bits in multiple image are then calculated The reflective character of the part put, and it is verified whether face to be verified is living body faces according to reflective character determination.

For example, in step S720, face to be verified is determined based on the reflective character of face to be verified in multiple image Whether it is that living body faces include：

Step S721：Extract because being irradiated to face to be verified from the image of acquired video or multiframe face to be verified On irradiation light the information (letter of the change of the image of destination object that causes of pattern (for example, color or/and position) change Number)；

Step S722：Information (signal) according to being extracted judges whether face to be verified is living body faces.

It is, for example possible to use processor 710 realizes step S721 and step S722.For example, step S721 and step S722 The data of middle generation can be stored in memorizer 720.

For example, in step S721, extract the mesh caused because of the patterns of change of the irradiation light being irradiated on face to be verified Information (signal) method of change of the image of mark object can be selected according to practical application, embodiments herein to this not It is specifically limited.For example, can pass through to calculate associated picture (that is, the phase of calculating multiple image and the pattern of corresponding irradiation light Close property) method realize above-mentioned destination object image change information retrieval.For example, the method for calculating associated picture can be joined See a kind of embodiment of living body faces checking device that disclosure one embodiment is provided, will not be described here.

For example, what is image capturing device can also obtained before execution step S721 is corresponding with each irradiation optical mode The image of several faces to be verified carry out pretreatment.The purpose of Image semantic classification is to ensure the size of destination object, position Put the concordance with quality.For example, according to practical application request, destination object can be the portion of whole human face region or face Subregion, here are not specifically limited.It is, for example possible to use the method for alignment compensation makes the destination object in multiframe facial image Position in each image is consistent, and the consistent position for referring to destination object herein is approximately constant, before and after not requiring that It is identical.The method of alignment compensation can be found in the enforcement that a kind of living body faces of disclosure one embodiment offer verify device Example, will not be described here.

For example, after execution step S721, before execution step S722, can also signal extracted to step S721 The reliability of (for example, the result of calculation of associated picture or dependency) is calculated.For example, can by calculate extracted signal Face to be verified in shooting image whether outside irradiation light high light be may determine that by property, and outside it there is irradiation light High light in the case of point out user find avoid the environment of high light direct projection from carrying out living body faces checking.For example, extracted signal Reliability calculating and determination methods a kind of living body faces of disclosure one embodiment offer are provided and verify the reality of device Example is applied, be will not be described here.

For example, in step S722, can be using the method for machine learning according to the signal (for example, associated picture) for being extracted Judge whether the change of the image of destination object meets the Changing Pattern of face.It is for instance possible to use the method reality of machine learning Existing above-mentioned judgement, and it is achieved in living body faces checking.For example, can be by the letter of the change of the image of the destination object for being extracted Number it is input in the good grader of precondition, and is discriminated whether by shooting image that living body faces obtain (i.e. by grader Differentiate whether face to be verified is living body faces by the grader for training).For example, above-mentioned grader can be convolutional Neural net Network (Convolutional neural networks), support vector machine (Support Vector Machine) or other are suitable Grader, embodiments herein are not specifically limited to this.For example, the method for grader is trained to can be found in the disclosure one A kind of living body faces that individual embodiment is provided verify the embodiment of device, will not be described here.

For example, it is also possible to directly use reflective character of the method for machine learning based on face to be verified in multiple image Determine whether face to be verified is living body faces.For example, unique identifier (or sequence of real numbers) and image taking can be filled Put acquired video or multiple image be input in the good grader of precondition (for example, Recognition with Recurrent Neural Network), and by point Class device is discriminated whether by shooting the image that living body faces are obtained.Therefore, the living body faces checking device can realize live body people The checking of face, and thus improve the safety of face verification device 700.

For example, Figure 14 is a kind of flow chart of living body faces verification method that disclosure further embodiment is provided.As schemed Shown in 14, the living body faces verification method includes：

Step S10：Dynamic change be irradiated to face to be verified irradiation light pattern, and shoot respectively with each pattern pair The image of several faces to be verified answered；

Step S20：Determine whether face to be verified is live body based on the reflective character of face to be verified in multiple image Face.

For example, in step slo, the next dynamic change of color and/or position that can change irradiation light with dynamic is irradiated to be treated The pattern of the irradiation light of checking face.For example, can according to practical application request select dynamic change irradiation light color and/or The method of position.For example, the position of face to be verified can be irradiated to by changing the position of light source dynamically to change irradiation light Put.Again for example, it is also possible to dynamically changing irradiation light by the angle of the emergent ray for changing light source is irradiated to witness to be tested The position of face.

For example, in step S20, determine that face to be verified is based on the reflective character of face to be verified in multiple image It is no to include for living body faces：

Step S201：Extract because being irradiated to face to be verified from the image of acquired video or multiframe face to be verified On irradiation light the information (letter of the change of the image of destination object that causes of pattern (for example, color or/and position) change Number)；

Step S202：Information (signal) according to being extracted judges whether face to be verified is living body faces.

For example, in step s 201, extract the mesh caused because of the patterns of change of the irradiation light being irradiated on face to be verified Information (signal) method of change of the image of mark object can be selected according to practical application, embodiments herein to this not It is specifically limited.For example, can pass through to calculate associated picture (that is, the phase of calculating multiple image and the pattern of corresponding irradiation light Close property) method realize above-mentioned destination object image change information retrieval.For example, the method for calculating associated picture can be joined See a kind of embodiment of living body faces checking device that disclosure one embodiment is provided, will not be described here.

For example, what is image capturing device can also obtained before execution step S201 is corresponding with each irradiation optical mode The image of several faces to be verified carry out pretreatment.The purpose of Image semantic classification is to ensure the size of destination object, position Put the concordance with quality.For example, according to practical application request, destination object can be the portion of whole human face region or face Subregion, here are not specifically limited.It is, for example possible to use the method for alignment compensation makes the destination object in multiframe facial image Position in each image is consistent, and the consistent position for referring to destination object herein is approximately constant, before and after not requiring that It is identical.The method of alignment compensation can be found in the enforcement that a kind of living body faces of disclosure one embodiment offer verify device Example, will not be described here.

For example, after execution step S201, before execution step S202, can also signal extracted to step S201 The reliability of (for example, the result of calculation of associated picture or dependency) is calculated.For example, can by calculate extracted signal Face to be verified in shooting image whether outside irradiation light high light be may determine that by property, and outside it there is irradiation light High light in the case of point out user find avoid the environment of high light direct projection from carrying out living body faces checking.For example, extracted signal Reliability calculating and determination methods a kind of living body faces of disclosure one embodiment offer are provided and verify the reality of device Example is applied, be will not be described here.

For example, in step S202, can be using the method for machine learning according to the signal (for example, associated picture) for being extracted Judge whether the change of the image of destination object meets the Changing Pattern of face.It is for instance possible to use the method reality of machine learning Existing above-mentioned judgement, and it is achieved in living body faces checking.For example, can be by the letter of the change of the image of the destination object for being extracted Number it is input in the good grader of precondition, and is discriminated whether by shooting image that living body faces obtain (i.e. by grader Differentiate whether face to be verified is living body faces by the grader for training).For example, above-mentioned grader can be convolutional Neural net Network (Convolutional neural networks), support vector machine (Support Vector Machine) or other are suitable Grader, embodiments herein are not specifically limited to this.For example, the method for grader is trained to can be found in the disclosure one A kind of living body faces that individual embodiment is provided verify the embodiment of device, will not be described here.

For example, it is also possible to directly use reflective character of the method for machine learning based on face to be verified in multiple image Determine whether face to be verified is living body faces.For example, unique identifier (or sequence of real numbers) and image taking can be filled Put acquired video or multiple image be input in the good grader of precondition (for example, Recognition with Recurrent Neural Network), and by point Class device is discriminated whether by shooting the image that living body faces are obtained.Therefore, the living body faces verification method can realize live body people The checking of face, and thus improve the safety of face verification method.

Present disclose provides a kind of living body faces verification method and device, the living body faces verification method and device are realized The checking of living body faces, and thus improve the safety of face verification method and device.

The above is only the exemplary embodiment of the present invention, not for limiting the scope of the invention, this Bright protection domain is determined by appended claim.

Claims

1. a kind of living body faces verification method, including：

Dynamic changes the pattern of the irradiation light for being irradiated to face to be verified, and shoots corresponding with each pattern described in several respectively The image of face to be verified；

Determine whether the face to be verified is live body based on the reflective character of face to be verified described in the multiple image Face.

2. living body faces verification method according to claim 1, wherein, dynamic change the color of the irradiation light and/or The pattern that dynamic change is irradiated to the irradiation light of the face to be verified is carried out in position.

3. living body faces verification method according to claim 2, wherein, the light sent using display screen is used as being irradiated to The irradiation light of the face to be verified, and by changing the content shown on the display screen come dynamic change display screen The pattern of the light for sending, so as to dynamic change is irradiated to the pattern of the irradiation light of the face to be verified.

4. living body faces verification method according to claim 1, wherein, shoot several institutes corresponding with each pattern respectively The image for stating face to be verified includes recording the video comprising described image.

5. according to the arbitrary described living body faces verification method of claim 1-4, wherein, measuring described in the multiple image After the reflective character of face, determine by the grader of training in advance whether the face to be verified is living body faces.

6. a kind of living body faces verify device, including：

Light source, is configured to the pattern that dynamic changes the irradiation light for being irradiated to face to be verified；

Image capturing device, is configured to shoot the image of several faces to be verified corresponding with each pattern respectively；

Processing meanss, be configured to face to be verified described in the multiple image reflective character determine it is described to be verified Whether face is living body faces.

7. living body faces according to claim 6 verify device, wherein, the light source is configured to dynamic and changes the irradiation The color of light and/or position, so as to dynamic change is irradiated to the pattern of the irradiation light of the face to be verified.

8. living body faces according to claim 7 verify device, wherein, the light source is display screen, the display screen Curtain is configured to pass the pattern for changing the irradiation light that the next dynamic change of shown content is irradiated to the face to be verified.

9. according to the arbitrary described living body faces checking device of claim 6-8, wherein, the processing meanss are additionally configured to every The initial time of secondary living body faces checking generates the unique identifier corresponding with this face live body checking.

10. living body faces according to claim 9 verify device, wherein, the processing meanss are additionally configured to according to described Unique identifier generates time dependent sequence of real numbers, and it is to be tested to realize that dynamic change is irradiated to based on the sequence of real numbers The pattern of the irradiation light of witness's face.

11. living body faces according to claim 6 verify device, wherein, described image filming apparatus are configured to recording and regard Frequency is shooting the image of several faces to be verified corresponding with each pattern respectively.

12. according to the arbitrary described living body faces checking device of claim 6-8 and 11, wherein, the processing meanss are configured to Described in the measurement multiple image after the reflective character of face, described treating is determined by the grader of training in advance Whether checking face is living body faces.

A kind of 13. living body faces verify device, including processor and memorizer, wherein, be stored with the memorizer computer Programmed instruction, the computer program instructions perform following steps when being run by the processor：

What is shot during the pattern for obtaining the irradiation light for being irradiated to face to be verified in dynamic change is corresponding with each pattern respectively The image of several faces to be verified；

A kind of 14. living body faces verify device, including：

Information transceiver, is configured to the image of several faces to be verified be sent to server, from described Server receives whether determine the face to be verified based on the reflective character of face to be verified described in the multiple image For the judgement information of living body faces,

Processing meanss, are performed based on the judgement information and are verified or not by operation.

A kind of 15. living body faces verify device, including information transceiver and processing meanss, wherein, described information sends Reception device is configured to from client the image for receiving several faces to be verified, the processing meanss be configured to it is described several The reflective character of face to be verified described in image determines that whether the face to be verified is living body faces, and described information sends The reflective character that reception device is additionally configured to by the processing meanss based on face to be verified described in the multiple image is true Whether the fixed face to be verified is that the judgement information of living body faces is sent to the client.