CN105138981A - In-vivo detection system and method - Google Patents

In-vivo detection system and method Download PDF

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Publication number
CN105138981A
CN105138981A CN201510514793.3A CN201510514793A CN105138981A CN 105138981 A CN105138981 A CN 105138981A CN 201510514793 A CN201510514793 A CN 201510514793A CN 105138981 A CN105138981 A CN 105138981A
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CN
China
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described
temperature
face
measuring area
temperature measuring
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CN201510514793.3A
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Chinese (zh)
Inventor
孙天成
范浩强
印奇
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北京旷视科技有限公司
北京小孔科技有限公司
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Priority to CN201510514793.3A priority Critical patent/CN105138981A/en
Publication of CN105138981A publication Critical patent/CN105138981A/en

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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K9/00Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
    • G06K9/00885Biometric patterns not provided for under G06K9/00006, G06K9/00154, G06K9/00335, G06K9/00362, G06K9/00597; Biometric specific functions not specific to the kind of biometric
    • G06K9/00892Use of multiple biometrics
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K9/00Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
    • G06K9/00885Biometric patterns not provided for under G06K9/00006, G06K9/00154, G06K9/00335, G06K9/00362, G06K9/00597; Biometric specific functions not specific to the kind of biometric
    • G06K9/00899Spoof detection
    • G06K9/00906Detection of body part being alive

Abstract

The invention discloses an in-vivo detection system and method. The in-vivo detection system and method comprises face detection equipment, temperature measurement equipment and information processing equipment, wherein the face detection equipment is used for detecting the face position information of a face; the temperature measurement equipment is used for detecting the temperature information in a temperature measurement area; and the information processing equipment is used for determining the face temperature of the face and the ambient temperature by means of the face position information and the temperature information, and determining whether the face belongs to an in vivo according to the face temperature and the ambient temperature. The in-vivo detection system and method can perform in-vivo determination according to the difference between the face temperature and the ambient temperature without special coordination with the detected people, and can improve the user experience and is high in detection efficiency, and can resist the situation that photo attack and video attack are employed to escape from the in-vivo detection system.

Description

In vivo detection system and method

Technical field

The present invention relates to area of pattern recognition, be specifically related to a kind of In vivo detection system and method.

Background technology

In vivo detection is for determining that target is the technology of lived individuality (referred to as live body).By In vivo detection, can identify that target is live body, and the abiotic object such as non-photograph.

At present, In vivo detection is applied to a lot of field, such as field of face identification.Sometimes, people expect to ensure that target that face identification system identifies is the face of real anticipator by In vivo detection.This just needs In vivo detection system can resist assailant by showing other people photo (attacking referred to as photo) printed, the video (attacking referred to as video) playing other people, using mask (attacking referred to as mask) to attempt to cheat face identification system.

Existing In vivo detection system is formula mostly, that is, need user to do corresponding actions according to system instruction or rest on a period of time as you were.This affects Consumer's Experience and detection efficiency.In some system, determine by whether there being the existence of photo border in detected image whether target is live body.The accuracy of this type systematic and robustness are all difficult to do well.

Summary of the invention

In view of the above problems, the present invention is proposed to provide a kind of In vivo detection system and method solved the problem at least in part.

According to one aspect of the invention, provide a kind of In vivo detection system.This In vivo detection system comprises: human-face detection equipment, for detecting the face location information of face; Temperature measuring equipment, for measuring the temperature information in temperature measuring area; And messaging device, determine face temperature and the environment temperature of described face for utilizing described face location information and described temperature information and judge whether described face belongs to live body according to described face temperature and described environment temperature.

Alternatively, described human-face detection equipment comprises: camera head, for gathering the image of described face; And human-face detector, for face location information according to the image recognition of described face.

Alternatively, described temperature measuring equipment is fixing, fixes to make the position of described temperature measuring area.

Alternatively, described In vivo detection system comprises face tracking equipment further, described face tracking equipment comprises controller and actuator, and described controller is used for controlling described actuator according to the instruction from described messaging device and the described face location information from described human-face detection equipment; Described actuator moves for driving described temperature measuring equipment, aims at ad-hoc location on described face and described environment position to enable described temperature measuring area.

Alternatively, described actuator comprises servomotor.

Alternatively, described temperature measuring equipment is further used for measuring the temperature information in described temperature measuring area continuously, wherein, described face temperature be described temperature measuring area aim on described face ad-hoc location time the median of temperature information measured, and/or described environment temperature is the median of the temperature information that described temperature measuring area is measured when aiming at environment position.

Alternatively, described temperature measuring equipment comprises infrared thermometer.

Alternatively, the distance coefficient ratio of described infrared thermometer is more than or equal to 12:1.

According to another aspect of the present invention, a kind of In vivo detection system is additionally provided.This biopsy method, comprising: the face location information detecting face; Measure the temperature information in temperature measuring area; Described face location information and described temperature information is utilized to determine face temperature and the environment temperature of described face; And judge whether described face belongs to live body according to described face temperature and described environment temperature.

Alternatively, the face location information of described detection face comprises further: the image gathering described face; And according to the image recognition of described face face location information.

Alternatively, describedly judge whether described face belongs to live body and comprise according to described face temperature and described environment temperature: if the difference of described face temperature and described environment temperature is greater than temperature threshold, then determine that described face belongs to live body.

Alternatively, the position of described temperature measuring area is fixing, described utilize described face location information and described temperature information to determine described face face temperature and environment temperature comprise: the temperature information recorded during according to the ad-hoc location on described face within described temperature measuring area determines described face temperature; And according to the ad-hoc location on described face outside described temperature measuring area time the temperature information that records determine described environment temperature.

Alternatively, the position of described temperature measuring area is fixing, described utilize described face location information and described temperature information to determine described face face temperature and environment temperature comprise: the temperature information recorded during according to the ad-hoc location on described face within described temperature measuring area determines described face temperature; And according to any position in the profile of described face all outside described temperature measuring area time the temperature information that records determine described environment temperature.

Alternatively, temperature information in described measurement temperature measuring area comprises: measure the temperature information in described temperature measuring area continuously, describedly determine that the face temperature of described face comprises: the median calculating the temperature information that first period of ad-hoc location within described temperature measuring area on described face records, using as described face temperature.

Alternatively, describedly determine that described environment temperature comprises: calculate any position in the profile of described face all outside described temperature measuring area, the median of temperature information that records in nearest with described first period the second period, using as described environment temperature.

Alternatively, described temperature measuring area is moveable, describedly determines that the face temperature of described face and environment temperature comprise: the temperature information measured when moving to according to described temperature measuring area the ad-hoc location aimed on described face determines described face temperature; And the temperature information determination environment temperature measured when moving to aim at environment position according to described temperature measuring area.

Alternatively, temperature information in described measurement temperature measuring area comprises the temperature information measured continuously in described temperature measuring area, describedly determine that the face temperature of described face and environment temperature comprise: the median calculating the temperature information measured when described temperature measuring area moves to the ad-hoc location aimed on described face, using as described face temperature; And/or calculate described temperature measuring area and move to the median of temperature information measured when aiming at environment position, using as described environment temperature.

Alternatively, after the face location information of described detection face, described biopsy method comprises further: determine described environment position, is less than distance threshold to make the minor increment of described environment position and described face.

Alternatively, environmental factor is considered in the setting of described temperature threshold.

According to face temperature and environment temperature, the present invention judges whether face belongs to live body, without the need to the special compounding of measured, improve Consumer's Experience.The temperature measuring efficiency of temperature measuring equipment is very high, comes into the continuous acquisition that just can complete multiple impact point temperature in the process of temperature measuring area measured, and therefore this In vivo detection system has higher detection efficiency.Carry out live body according to the difference of face temperature and environment temperature to judge to resist and adopt photo to attack and the situation of video attack to circumvent In vivo detection system.

Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of instructions, and can become apparent, below especially exemplified by the specific embodiment of the present invention to allow above and other objects of the present invention, feature and advantage.

Accompanying drawing explanation

By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:

Fig. 1 shows the schematic block diagram of In vivo detection system according to an embodiment of the invention;

Fig. 2 shows the schematic block diagram of In vivo detection system in accordance with another embodiment of the present invention; And

Fig. 3 shows the process flow diagram of biopsy method according to an embodiment of the invention.

Embodiment

Below with reference to accompanying drawings exemplary embodiment of the present disclosure is described in more detail.Although show exemplary embodiment of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the embodiment set forth here.On the contrary, provide these embodiments to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.

In vivo detection system provided by the invention, can carry out the In vivo detection of non-formula in real time.Fig. 1 schematically shows the block diagram of In vivo detection system 100, and as shown in Figure 1, this In vivo detection system 100 comprises human-face detection equipment 110, temperature measuring equipment 120 and messaging device 130.

Human-face detection equipment 110 is for detecting the face location information of face.Face location information can comprise the profile of face and the positional information of face key point.It is one or more that face key point can comprise in center of forehead, cheek, nose, the corners of the mouth, canthus and face etc.Wherein, using when wearing mask not easily by the human face region (such as cheek, forehead etc.) that exposes as face key point, In vivo detection system attack mask can be helped to attack.After human-face detection equipment 110 determines face location, the position outside face location can be called environment position.In other words, environment position also just correspondingly determines.

Human-face detection equipment 110 can comprise camera head 111 and human-face detector 112.

The region that face occurs usually aimed at by camera head 111.Camera head 111 gathers the image of face.Camera head 111 can obtain the image of face by collection single image or video.For the latter, can using the image of the frame in video as face.When this In vivo detection system 100 coordinates gate control system to use, camera head 111 can aim at doorway.When camera head 111 is arranged on an end of passage, camera head 111 can aligned with channel.

Human-face detector 112 is according to the above-mentioned face location information of the image recognition of face.In other words, face location information is obtained in the image that human-face detector 112 can be caught at camera head 111.Human-face detector 112 can be provided separately with camera head 111, such as, be arranged on the positions such as operation room.Human-face detector 112 can also integrate with camera head 111 or with the miscellaneous part of In vivo detection system 100.Exemplarily, human-face detector 112 can be integrated in the housing of camera head 111.Human-face detector 112 can be Ha Er (Haar) cascade (Cascade) human-face detector that precondition is good, and it utilizes Haar feature to carry out recognition of face.First sorter can be trained by a large amount of methods with the subject image pattern-recognition of obvious Haar feature (rectangle).Sorter is cascade, every grade of sub-classifier all retains the candidate's object with object features entering next stage sub-classifier with the discrimination be roughly the same, simultaneously the sub-classifier of every one-level is then by many Haar structural feature, have level, vertical, tilt.When HaarCascade human-face detector recognition object, the window onesize with window during training is adopted to travel through entire image.Whenever window moves to a position, namely calculate the Haar feature in this window.Utilize the sorter of cascade, the recognition of face of image can be realized according to calculated Haar feature.

Temperature measuring equipment 120 is for measuring the temperature information in temperature measuring area.Preferably, temperature measuring equipment 120 measures the temperature in temperature measuring area continuously.The temperature information that temperature measuring equipment 120 records exports messaging device 130 continuously to.Exemplarily, temperature measuring equipment 120 can with the temperature in certain frequency continuous coverage temperature measuring area, such as, measure the temperature in a temperature measuring area every 1 second, 2 seconds, 3 seconds, 4 seconds or 5 seconds etc.Temperature measuring equipment 120 adopts non-contacting mode to carry out temperature survey.Temperature measuring equipment 120 can be fixing, fixes to make the position of temperature measuring area.In the case, similar with picture pick-up device 111, temperature measuring equipment 120 aims at the region that face occurs usually.Temperature measuring equipment 120 can be moveable, aims at ad-hoc location on face and environment position to enable temperature measuring area.Hereinafter will introduce this two kinds of embodiments respectively in detail.Temperature measuring equipment 120 mainly comprises infrared thermometer.Preferably, the distance coefficient of this infrared thermometer is more than or equal to 12:1 than D:S.Distance coefficient is than the ratio referred between target range and measured object diameter.The distance coefficient of infrared thermometer is than larger, and sensing range (namely temperature measuring area) is less.Compared to expensive infreared imaging device (have larger temperature-measuring range, can obtain the temperature at each point place within the scope of this), the price of the point-like temperature measurer that this distance coefficient is larger is relatively low, thus reduces cost.Only describe a kind of non-contact type thermodetector herein, but it will be appreciated by those skilled in the art that, this temperature measuring equipment 120 can adopt the non-contact type thermodetector of other types that are existing or that may occur future.

According to face temperature T1 and environment temperature T0, the temperature information that messaging device 130 is measured for the face location information that utilizes human-face detection equipment 110 and detect and temperature measuring equipment 120 to determine face temperature T1 and the environment temperature T0 of face, and judges whether this face belongs to live body.Under normal circumstances, face temperature T1 is higher than environment temperature T0, and therefore, if the difference Td of face temperature T1 and environment temperature T0 is greater than temperature threshold T_thre, then messaging device 130 determines that this face belongs to live body.In addition, can also by judging whether the ratio of face temperature T1 and environment temperature T0 is greater than another temperature threshold T_thre ' being different from said temperature threshold value T_thre and judges whether face belongs to live body.Messaging device 130 can realize with various feasible software, hardware, firmware or their combination.Inventive point of the present invention does not lie in specific implementation and the method for messaging device 130.

According to face temperature T1 and environment temperature T0, the present invention judges whether face belongs to live body, without the need to the special compounding of measured, improve Consumer's Experience.The temperature measuring efficiency of temperature measuring equipment is very high, comes into the continuous acquisition that just can complete multiple impact point temperature in the process of temperature measuring area measured, and therefore this In vivo detection system has higher detection efficiency.Carry out live body according to the difference of face temperature T1 and environment temperature T0 and judge to resist the situation adopting photo attack and video to attack to circumvent In vivo detection system.In addition, when can select to wear mask not easily by the region (such as cheek, forehead etc.) of exposing is in the temperature measuring area of temperature measuring equipment time the temperature that obtains as face temperature T1, resist mask thus and attack.

As mentioned above, temperature measuring equipment 120 can be fixing, and now, the position of temperature measuring area is fixed.Therefore, the temperature that the ad-hoc location on face or face records when entering temperature measuring area can represent face temperature T1.When the ad-hoc location on face or face does not enter temperature measuring area or left temperature measuring area, owing to not comprising face in temperature measuring area, the temperature therefore recorded can be used for representing environment temperature T0.Based on above-mentioned principle, the face location information that messaging device 130 just can detect in conjunction with human-face detection equipment 110 and the temperature information that temperature measuring equipment 120 is measured determine face temperature T1 and the environment temperature T0 of face.

Messaging device 130 can according to the ad-hoc location on face within temperature measuring area time the temperature information that records determine face temperature T1.Messaging device 130 can select one or more position as the ad-hoc location on face from the key point position of above-mentioned face, such as, select nose as ad-hoc location.The face location information that messaging device 130 records according to human-face detection equipment 110 judges, whether the ad-hoc location on face is within temperature measuring area.If this ad-hoc location is within temperature measuring area, the temperature information determination face temperature T1 that messaging device 130 can record according to temperature measuring equipment 120.The ad-hoc location of temperature measuring equipment 120 on face is positioned within temperature measuring area this period (i.e. the first period) and can measures multiple temperature information S1 (S1 is the set of temperature), and messaging device 130 can select one of them as face temperature T1.Such as, select the temperature recorded during the center superposition of the center of ad-hoc location and temperature measuring area as face temperature T1.Temperature measuring equipment 120 measures multiple temperature information in the ad-hoc location of face the first period be positioned within temperature measuring area, messaging device 130 can also calculate the median median (S1) of these temperature informations S1, and using this median median (S1) as face temperature T1.

Messaging device 130 can according to the ad-hoc location on face outside temperature measuring area time the temperature information that records determine environment temperature T0.Such implementation at least comprises following two kinds of situations.

A kind of situation is: just can be used for determining environment temperature T0 as long as the ad-hoc location on face leaves the temperature information that temperature measuring area records.The face location information that messaging device 130 records according to human-face detection equipment 110 judges, whether the ad-hoc location on face is within temperature measuring area.If this ad-hoc location is not within temperature measuring area, the temperature information determination environment temperature T0 that messaging device 130 can record according to temperature measuring equipment 120.

The second situation is: the temperature information recorded when any position in the profile of face is all outside temperature measuring area just can be used for determining environment temperature T0.That is, any position only having face to leave temperature measuring area or face completely does not all enter temperature measuring area, and messaging device 130 just determines that the temperature information that temperature measuring equipment 120 records can represent environment temperature T0.The face location information that messaging device 130 records according to human-face detection equipment 110, judges any position in the profile of face whether all outside temperature measuring area.If any position in the profile of face is all outside temperature measuring area, the temperature information determination environment temperature T0 that messaging device 130 can record according to temperature measuring equipment 120.Obviously, the environment temperature T0 obtained by this mode can closer to the true temperature of environment.

In the first situation, the multiple temperature information S0 (S0 is the set of temperature) comprising multiple environment temperature when the ad-hoc location of temperature measuring equipment 120 on face is positioned at outside temperature measuring area, can be measured.Messaging device 130 can select one of them as environment temperature T0.Messaging device 130 also can calculate the median of these temperature informations, using this median as environment temperature T0.Preferably, messaging device 130 calculate ad-hoc location on face outside temperature measuring area, the median median (S0) of temperature information S0 that records in nearest with the first period (period of this ad-hoc location within temperature measuring area) the second period, and using this median as environment temperature T0.Second period can be a period of time before the ad-hoc location on face does not enter temperature measuring area, such as 30 seconds, 1 minute etc.A period of time after second period, can also to be that the ad-hoc location on face is firm leave temperature measuring area, such as 30 seconds, 1 minute etc.

In the latter case, the multiple temperature information S0 (S0 is the set of temperature) comprising multiple environment temperature can also be measured when any position of temperature measuring equipment 120 in the profile of face is all outside temperature measuring area.Messaging device 130 can select one of them as environment temperature T0.Messaging device 130 also can calculate the median of these temperature informations, using this median as environment temperature T0.Preferably, messaging device 130 calculate any position in the profile of face all outside temperature measuring area, the median median (S0) of temperature information S0 that records in nearest with the first period (period of this ad-hoc location within temperature measuring area) the second period, and using this median as environment temperature T0.Second period can be face profile in any position all do not enter temperature measuring area before a period of time, such as 30 seconds, 1 minute etc.Second period can also be face profile in all positions firm leave temperature measuring area after a period of time, such as 30 seconds, 1 minute etc.

Temperature-measurement principle by temperature measuring equipment limit, and such as, when temperature measuring equipment is infrared thermometer, temperature measuring equipment may receive the heat radiation from environment, therefore the measurement of face temperature T1 is inevitably subject to the impact of environmental factor.In addition, face temperature itself also can be subject to the impact of environmental factor.In order to reduce the impact on live body accuracy of judgement degree brought thus, environmental factor is considered in the setting of temperature threshold T_thre.Temperature threshold T_thre can carry out testing setting by choosing different people under different environment temperatures.Thus, variation of ambient temperature (such as, seasonal variations, the room temperature change) impact on In vivo detection system can be resisted, increase robustness.

The In vivo detection system more than introduced is by waiting for that tested face enters and leaves temperature measuring area and measures face temperature T1 and environment temperature T0 passively, the benefit of these embodiments is that the simple structure of In vivo detection system, cost are low, can judge whether tested face belongs to live body to a certain extent exactly.But, the time that ad-hoc location on face rests within temperature measuring area is also uncontrollable, may be very short, and therefore the temperature information that records of temperature measuring equipment 120 is very limited, possibly cannot reflect face temperature T1 truly, have a definite limitation to the accuracy of In vivo detection.

Thus, the present invention also provides a kind of preferred In vivo detection system.Fig. 2 shows the schematic block diagram of In vivo detection system 200 in accordance with a preferred embodiment of the present invention.This In vivo detection system 200 comprises human-face detection equipment 210, temperature measuring equipment 220, messaging device 230 and face tracking equipment 240.Human-face detection equipment 210 is similar to above-mentioned human-face detection equipment 110, and human-face detection equipment 210 can comprise camera head 211 and human-face detector 212.For simplicity, no longer they are described in further detail here.Below temperature measuring equipment 220, messaging device 230 and face tracking equipment 240 mainly will be described.

Messaging device 230 can select interested position as ad-hoc location from the key point position face, and in all right Environment, interested position is as environment position.The environment position that messaging device 230 is selected can be one or more.Face tracking equipment 240 can comprise controller 241 and actuator 242.Controller 241 is for controlling actuator 242 according to the instruction from messaging device 230 and the face location information from human-face detection equipment 210.This instruction comprises the temperature of the ad-hoc location on tracking measurement face and the temperature of measurement environment position.This controller 241 can integrate with messaging device 230.Controller 241 also can integrate with actuator 242.Actuator 242 moves for driving temperature measuring equipment 220 under the control of controller 241.Actuator 242 can be controlled by controller 241, drives temperature measuring equipment 220 to make its temperature measuring area aim at ad-hoc location on face, and the temperature information of specific location on tracking measurement face.Actuator 242 can also be controlled by controller 241, drives temperature measuring equipment 220 to move to and makes its temperature measuring area aim at environment position, measure the temperature information at this environment position place.Actuator 242 can be servomotor.The step obtaining the temperature information of face and the temperature information of environment limits without sequencing.

When the temperature information of the specific location on temperature measuring equipment 220 tracking measurement face, temperature measuring equipment 220 can carry out continuous several times measurement, obtains the temperature information comprising multiple temperature.In the case, messaging device 230 can select in the temperature information S1 of specific location one as face temperature T1.In addition, messaging device 230 can calculate the median median (S1) of the temperature information S1 of specific location, and using this median as face temperature T1.When temperature measuring equipment 220 moves to the temperature information of measurement environment position, temperature measuring equipment 220 can carry out continuous several times and/or carry out multimetering, obtains the temperature information comprising multiple temperature.In the case, messaging device 230 can in selective temperature information S0 one as environment temperature T0.In addition, the median median (S0) of the temperature information S0 of all right computing environment position of messaging device 230, and using this median as environment temperature T0.

In a preferred embodiment, based on the positional information of face, messaging device 230 can determine environment position according to following condition: environment position to be measured and the minor increment of face are less than distance threshold.When have people attempt by use thermal value higher display screen display face image or place after photo well heater circumvent In vivo detection system time, the temperature of display screen or photo may close to face temperature T1, but display screen or photo usually all exist frame and/or comprise the region not showing face.In this case, come Environment position according to above-mentioned condition, the temperature information measured can be made and the temperature information of non-ambient, and may be the temperature information frame of display screen or photo or display screen or photo not showing human face region.Thus In vivo detection systems axiol-ogy goes out tested face and does not belong to live body.In a word, the restriction of distance threshold to environment position adds this In vivo detection system to the resistivity of above-mentioned situation.Exemplarily, distance threshold can be 0.5cm, 1cm, 1.5cm or 2cm etc.In addition, can also select to measure positions different around face as environment position to detect this attack.

After determining face temperature T1 and environment temperature T0, according to face temperature T1 and environment temperature T0, messaging device 230 can judge whether this face belongs to live body.As described above, when the difference of face temperature T1 and environment temperature T0 is greater than temperature threshold T_thre, messaging device 230 can judge that tested face belongs to live body.Or when the ratio of face temperature T1 and environment temperature T0 is greater than another temperature threshold T_thre ', messaging device 230 judges that tested face belongs to live body.

In addition, as described above, the setting of temperature threshold can consider environmental factor, to resist variation of ambient temperature (such as, seasonal variations, the room temperature change) impact on In vivo detection system, increases robustness.

According to a further aspect in the invention, a kind of biopsy method is additionally provided.Fig. 3 shows the process flow diagram of biopsy method 300 according to an embodiment of the invention.As shown in Figure 3, the method 300 comprises step S320, S340, S360 and S380.

In step s 320, the face location information of face is detected.Detect the face location information of face may further include: the image gathering face, and according to the image recognition face location information of face.Face location information comprises the profile of face and the positional information of face key point.It is one or more that face key point can comprise in center of forehead, cheek, nose, the corners of the mouth, canthus and face etc.

In step S340, measure the temperature information in temperature measuring area.In one embodiment, the temperature in temperature measuring area can be measured continuously.

In step S360, utilize face location information and temperature information determination face temperature T1 and environment temperature T0.

In step S380, judge whether face belongs to live body according to face temperature T1 and environment temperature T0.Alternatively, if the difference of face temperature T1 and environment temperature T0 is greater than temperature threshold, then determine that face belongs to live body.Alternatively, the setting of temperature threshold can consider environmental factor, to resist variation of ambient temperature (such as, seasonal variations, the room temperature change) impact on In vivo detection system, increases robustness.

Alternatively, the position of temperature measuring area is fixing.This biopsy method is by waiting for that tested face enters and leaves temperature measuring area and measures face temperature T1 and environment temperature T0 passively.In the case, step 360 can comprise: the temperature information determination face temperature T1 recorded during according to the ad-hoc location on face within temperature measuring area; And according to the ad-hoc location on face outside temperature measuring area time the temperature information determination environment temperature T0 that records.

Alternatively, when the position of temperature measuring area is fixing, biopsy method by wait for passively tested face enter and leave temperature measuring area measure face temperature T1 and environment temperature T0 time, step 360 can comprise: the temperature information determination face temperature recorded during according to the ad-hoc location on face within temperature measuring area; And according to any position in the profile of face all outside temperature measuring area time the temperature information determination environment temperature that records.

Alternatively, when measuring the temperature information in temperature measuring area continuously, determine that face temperature T1 comprises: the median calculating the temperature information that first period of ad-hoc location within temperature measuring area on face records, using as face temperature T1; Or select one the temperature information recorded within above-mentioned first period as face temperature T1.Determine that environment temperature T0 comprises: calculate any position in the profile of face all outside temperature measuring area, with the median of temperature information that records in nearest the second period the first period, using as environment temperature T0; Or select one the temperature information recorded within above-mentioned second period as environment temperature T0.

Alternatively, temperature measuring area can be moveable, by moving temperature measuring area on one's own initiative and aim at ad-hoc location on face and environment position measuring face temperature T1 and environment temperature T0.In the case, step 360 can comprise: the temperature information determination face temperature T1 measured when moving to according to temperature measuring area the ad-hoc location aimed on face; And the temperature information determination environment temperature T0 measured when moving to aim at environment position according to temperature measuring area.These two steps limit without sequencing.

Alternatively, when measuring the temperature information in temperature measuring area continuously, determine that face temperature T1 comprises: the median calculating the temperature information measured when temperature measuring area moves to the ad-hoc location aimed on face, using as face temperature T1; Or from the temperature information measured, select one as face temperature T1.Determine that environment temperature T0 comprises: calculate temperature measuring area and move to the median of temperature information measured when aiming at environment position, using as environment temperature T0; Or from the temperature information measured, select one as environment temperature T0.

Alternatively, after detection face location information, this biopsy method comprises further: determine described environment position, is less than distance threshold to make the minor increment of described environment position and described face.

Intrinsic not relevant to any certain computer, virtual system or miscellaneous equipment at this method and apparatus provided.Various general-purpose system also can with use based on together with this teaching.According to description above, the structure constructed required by this type systematic is apparent.

In instructions provided herein, describe a large amount of detail.But can understand, embodiments of the invention can be put into practice when not having these details.In some instances, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.

Similarly, be to be understood that, in order to simplify the disclosure and to help to understand in each inventive aspect one or more, in the description above to exemplary embodiment of the present invention, each feature of the present invention is grouped together in single embodiment, figure or the description to it sometimes.But, the method for the disclosure should be construed to the following intention of reflection: namely the present invention for required protection requires feature more more than the feature clearly recorded in each claim.Or rather, as claims below reflect, all features of disclosed single embodiment before inventive aspect is to be less than.Therefore, the claims following embodiment are incorporated to this embodiment thus clearly, and wherein each claim itself is as independent embodiment of the present invention.

Those skilled in the art are appreciated that and adaptively can change the module in the device in embodiment and they are arranged in one or more devices different from this embodiment.Module in embodiment or unit or assembly can be combined into a module or unit or assembly, and multiple submodule or subelement or sub-component can be put them in addition.Except at least some in such feature and/or process or unit be mutually repel except, any combination can be adopted to combine all processes of all features disclosed in this instructions (comprising adjoint claim, summary and accompanying drawing) and so disclosed any method or device or unit.Unless expressly stated otherwise, each feature disclosed in this instructions (comprising adjoint claim, summary and accompanying drawing) can by providing identical, alternative features that is equivalent or similar object replaces.

In addition, those skilled in the art can understand, although embodiments more described herein to comprise in other embodiment some included feature instead of further feature, the combination of the feature of different embodiment means and to be within scope of the present invention and to form different embodiments.Such as, in the following claims, the one of any of embodiment required for protection can use with arbitrary array mode.

All parts embodiment of the present invention with hardware implementing, or can realize with the software module run on one or more processor, or realizes with their combination.It will be understood by those of skill in the art that the some or all functions that microprocessor or digital signal processor (DSP) can be used in practice to realize according to some parts in the In vivo detection equipment of the embodiment of the present invention.

The present invention will be described instead of limit the invention to it should be noted above-described embodiment, and those skilled in the art can design alternative embodiment when not departing from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and does not arrange element in the claims or step.Word "a" or "an" before being positioned at element is not got rid of and be there is multiple such element.The present invention can by means of including the hardware of some different elements and realizing by means of the computing machine of suitably programming.In the unit claim listing some devices, several in these devices can be carry out imbody by same hardware branch.Word first, second and third-class use do not represent any order.Can be title by these word explanations.

Claims (19)

1. an In vivo detection system, is characterized in that, comprising:
Human-face detection equipment, for detecting the face location information of face;
Temperature measuring equipment, for measuring the temperature information in temperature measuring area; And
Messaging device, determines face temperature and the environment temperature of described face for utilizing described face location information and described temperature information and judges whether described face belongs to live body according to described face temperature and described environment temperature.
2. In vivo detection system as claimed in claim 1, it is characterized in that, described human-face detection equipment comprises:
Camera head, for gathering the image of described face; And
Human-face detector, for face location information according to the image recognition of described face.
3. In vivo detection system as claimed in claim 1, it is characterized in that, described temperature measuring equipment is fixing, fixes to make the position of described temperature measuring area.
4. In vivo detection system as claimed in claim 1, it is characterized in that, described In vivo detection system comprises face tracking equipment further, and described face tracking equipment comprises controller and actuator,
Described controller is used for controlling described actuator according to the instruction from described messaging device and the described face location information from described human-face detection equipment;
Described actuator moves for driving described temperature measuring equipment, aims at ad-hoc location on described face and environment position to enable described temperature measuring area.
5. In vivo detection system as claimed in claim 4, it is characterized in that, described actuator comprises servomotor.
6. In vivo detection system as claimed in claim 1, it is characterized in that, described temperature measuring equipment is further used for measuring the temperature information in described temperature measuring area continuously,
Wherein, described face temperature be described temperature measuring area aim on described face ad-hoc location time the median of temperature information measured, and/or described environment temperature is the median of the temperature information that described temperature measuring area is measured when aiming at environment position.
7. In vivo detection system as claimed in claim 1, it is characterized in that, described temperature measuring equipment comprises infrared thermometer.
8. In vivo detection system as claimed in claim 7, it is characterized in that, the distance coefficient ratio of described infrared thermometer is more than or equal to 12:1.
9. a biopsy method, is characterized in that, comprising:
Detect the face location information of face;
Measure the temperature information in temperature measuring area;
Described face location information and described temperature information is utilized to determine face temperature and the environment temperature of described face; And
Judge whether described face belongs to live body according to described face temperature and described environment temperature.
10. biopsy method as claimed in claim 9, it is characterized in that, the face location information of described detection face comprises further:
Gather the image of described face; And
Face location information according to the image recognition of described face.
11. biopsy methods as claimed in claim 9, is characterized in that, describedly judge whether described face belongs to live body and comprise according to described face temperature and described environment temperature:
If the difference of described face temperature and described environment temperature is greater than temperature threshold, then determine that described face belongs to live body.
12. biopsy methods as claimed in claim 9, it is characterized in that, the position of described temperature measuring area is fixing, described utilize described face location information and described temperature information to determine described face face temperature and environment temperature comprise:
The temperature information recorded during according to the ad-hoc location on described face within described temperature measuring area determines described face temperature; And
The temperature information recorded during according to the ad-hoc location on described face outside described temperature measuring area determines described environment temperature.
13. biopsy methods as claimed in claim 9, it is characterized in that, the position of described temperature measuring area is fixing, described utilize described face location information and described temperature information to determine described face face temperature and environment temperature comprise:
The temperature information recorded during according to the ad-hoc location on described face within described temperature measuring area determines described face temperature; And
The temperature information recorded during according to any position in the profile of described face all outside described temperature measuring area determines described environment temperature.
14. biopsy methods as described in claim 12 or 13, is characterized in that,
Temperature information in described measurement temperature measuring area comprises: measure the temperature information in described temperature measuring area continuously,
Describedly determine that the face temperature of described face comprises: the median calculating the temperature information that first period of ad-hoc location within described temperature measuring area on described face records, using as described face temperature.
15. biopsy methods as claimed in claim 14, it is characterized in that, describedly determine that described environment temperature comprises: calculate any position in the profile of described face all outside described temperature measuring area, the median of temperature information that records in nearest with described first period the second period, using as described environment temperature.
16. biopsy methods as claimed in claim 9, it is characterized in that, described temperature measuring area is moveable, describedly determines that the face temperature of described face and environment temperature comprise:
The temperature information measured when moving to according to described temperature measuring area the ad-hoc location aimed on described face determines described face temperature; And
The temperature information determination environment temperature measured when moving to aim at environment position according to described temperature measuring area.
17. biopsy methods as claimed in claim 16, it is characterized in that, the temperature information in described measurement temperature measuring area comprises the temperature information measured continuously in described temperature measuring area, describedly determines that the face temperature of described face and environment temperature comprise:
Calculate the median of the temperature information measured when described temperature measuring area moves to the ad-hoc location aimed on described face, using as described face temperature; And/or
Calculate described temperature measuring area and move to the median of temperature information measured when aiming at environment position, using as described environment temperature.
18. biopsy methods as claimed in claim 16, is characterized in that, after the face location information of described detection face, described biopsy method comprises further:
Determine described environment position, be less than distance threshold to make the minor increment of described environment position and described face.
19. biopsy methods as claimed in claim 11, is characterized in that, environmental factor is considered in the setting of described temperature threshold.
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106845345A (en) * 2016-12-15 2017-06-13 重庆凯泽科技股份有限公司 Biopsy method and device
CN107330370A (en) * 2017-06-02 2017-11-07 广州视源电子科技股份有限公司 A kind of brow furrows motion detection method and device and vivo identification method and system
CN107368769A (en) * 2016-05-11 2017-11-21 北京市商汤科技开发有限公司 Human face in-vivo detection method, device and electronic equipment
CN107451543A (en) * 2017-07-14 2017-12-08 广东欧珀移动通信有限公司 Event-handling method and Related product
CN107454335A (en) * 2017-08-31 2017-12-08 广东欧珀移动通信有限公司 Image processing method, device, computer-readable recording medium and mobile terminal
CN107563329A (en) * 2017-09-01 2018-01-09 广东欧珀移动通信有限公司 Image processing method, device, computer-readable recording medium and mobile terminal
CN108344525A (en) * 2018-02-09 2018-07-31 英华达(上海)科技有限公司 Adaptive body temperature monitoring method and system
CN109215806A (en) * 2018-10-31 2019-01-15 绍兴文理学院 A kind of public place health monitoring systems and method based on recognition of face

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1542416A (en) * 2003-05-02 2004-11-03 北京行者华视网络系统集成技术有限公 Temperature measuring method and apparatus thereof
CN102004906A (en) * 2010-11-18 2011-04-06 无锡中星微电子有限公司 Face identification system and method
CN103235942A (en) * 2013-05-14 2013-08-07 苏州福丰科技有限公司 Facial recognition method applied to entrance guard
CN103544738A (en) * 2013-11-13 2014-01-29 胡江莉 Attendance system for company

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1542416A (en) * 2003-05-02 2004-11-03 北京行者华视网络系统集成技术有限公 Temperature measuring method and apparatus thereof
CN102004906A (en) * 2010-11-18 2011-04-06 无锡中星微电子有限公司 Face identification system and method
CN103235942A (en) * 2013-05-14 2013-08-07 苏州福丰科技有限公司 Facial recognition method applied to entrance guard
CN103544738A (en) * 2013-11-13 2014-01-29 胡江莉 Attendance system for company

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107368769A (en) * 2016-05-11 2017-11-21 北京市商汤科技开发有限公司 Human face in-vivo detection method, device and electronic equipment
CN106845345A (en) * 2016-12-15 2017-06-13 重庆凯泽科技股份有限公司 Biopsy method and device
CN107330370A (en) * 2017-06-02 2017-11-07 广州视源电子科技股份有限公司 A kind of brow furrows motion detection method and device and vivo identification method and system
CN107451543A (en) * 2017-07-14 2017-12-08 广东欧珀移动通信有限公司 Event-handling method and Related product
CN107454335A (en) * 2017-08-31 2017-12-08 广东欧珀移动通信有限公司 Image processing method, device, computer-readable recording medium and mobile terminal
CN107563329A (en) * 2017-09-01 2018-01-09 广东欧珀移动通信有限公司 Image processing method, device, computer-readable recording medium and mobile terminal
CN108344525A (en) * 2018-02-09 2018-07-31 英华达(上海)科技有限公司 Adaptive body temperature monitoring method and system
CN109215806A (en) * 2018-10-31 2019-01-15 绍兴文理学院 A kind of public place health monitoring systems and method based on recognition of face

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