WO2018040307A1 - 一种基于红外可见双目图像的活体检测方法及装置 - Google Patents
一种基于红外可见双目图像的活体检测方法及装置 Download PDFInfo
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- WO2018040307A1 WO2018040307A1 PCT/CN2016/106673 CN2016106673W WO2018040307A1 WO 2018040307 A1 WO2018040307 A1 WO 2018040307A1 CN 2016106673 W CN2016106673 W CN 2016106673W WO 2018040307 A1 WO2018040307 A1 WO 2018040307A1
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- visible light
- infrared
- light imaging
- camera
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- 238000001514 detection method Methods 0.000 title abstract description 7
- 238000003384 imaging method Methods 0.000 claims abstract description 80
- 238000000034 method Methods 0.000 claims abstract description 14
- 210000001747 pupil Anatomy 0.000 claims description 9
- 238000012795 verification Methods 0.000 claims description 6
- 238000003331 infrared imaging Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000011514 reflex Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000013135 deep learning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/40—Spoof detection, e.g. liveness detection
- G06V40/45—Detection of the body part being alive
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
- G06V40/165—Detection; Localisation; Normalisation using facial parts and geometric relationships
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/168—Feature extraction; Face representation
- G06V40/171—Local features and components; Facial parts ; Occluding parts, e.g. glasses; Geometrical relationships
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/172—Classification, e.g. identification
Definitions
- the present invention relates to the field of video security, and in particular to a living body detection method and apparatus based on an infrared visible binocular image.
- the visual information-based living body detection in fixed places has a wide range of applications in many scenarios, such as community access control, bank self-service withdrawals, and automatic processing by government departments. These scenarios use face recognition to verify the identity of the person being treated, but require live detection to prevent attacks.
- Common attack methods are: photos, videos, hole masks, 3d masks, etc. There is currently no mainstream reliable solution. Common practices include: detecting blinks to prevent photo attacks; detecting multiple faces and three-dimensional information from multiple cameras in different locations to prevent simple photo-video attacks; preventing simple video attacks through texture information on the screen; The temperature sensor protects against simple video attacks.
- the object of the present invention is to provide a living body detecting method and apparatus based on infrared visible binocular images in order to overcome the defects of the prior art described above.
- a method of living body detection comprising:
- S1 collecting infrared light imaging of the object to be identified through an infrared camera, and collecting visible light imaging of the object to be identified through the visible light camera;
- step S2 if there is no image in the infrared light imaging, it is determined that the object to be identified is not a living body, otherwise, step S3 is performed;
- S3 extracting features of the eye and face of the object to be identified in visible light imaging and infrared light imaging, and base The extracted feature determines whether the object to be identified is a living body.
- the step S3 specifically includes the following steps:
- step S31 determining whether there is a face in visible light imaging and infrared light imaging, or if yes, proceeding to step S32, if not, repeating step S31;
- S32 Extracting features of the face of the object to be identified in visible light imaging and infrared light imaging. If the tip of the nose is reflected in the infrared light image and the cheeks are dark, proceed to S33.
- S33 Extracting features of the eye of the object to be identified in visible light imaging and infrared light imaging. If the pupil is reflected in the infrared light imaging and the white of the eye is gray, it is determined that the object to be identified is a living body, and vice versa.
- step S3 After being identified as a living body in step S3, the steps are further performed:
- step S6 according to the data obtained in steps S4 and S5, combined with the position and angle relationship between the infrared camera and the visible light camera to determine whether the object to be recognized captured by the infrared camera and the visible light camera is the same object, and if so, maintain The determination that the object is a living body is determined, and if not, it is determined that the object to be identified is not a living body.
- An angle formed between the front side of the object to be identified and the infrared camera is an angle formed directly in front of the object to be recognized and directly in front of the infrared camera, and an angle formed between the front side of the object to be recognized and the infrared camera is to be Identify the angle between the front of the object and the front of the visible light camera.
- a device comprising:
- a visible light camera for collecting visible light imaging of an object to be identified
- An infrared camera for collecting infrared light imaging of an object to be identified
- the computer is respectively connected to the visible light camera and the infrared camera for determining whether the object to be identified is a living body according to visible light imaging and infrared light imaging.
- the computer includes:
- a pre-identification module configured to determine whether the image is non-living based on whether there is an image in the infrared light imaging
- the feature recognition module is connected to the pre-identification module, and is configured to extract features of the eye and the face of the object to be recognized in the visible light imaging and the infrared light imaging after the verification of the pre-identification module, and determine whether the object to be identified is a living body based on the extracted features. .
- the feature recognition module includes:
- the first identifying unit is configured to extract features of the face of the object to be recognized in the visible light imaging and the infrared light imaging. If the nose is reflective and the cheek is dark in the infrared imaging, the object to be identified is determined to be a living body, and the opposite is a non-living body.
- the second identifying unit is configured to extract features of the eye to be recognized in the visible light imaging and the infrared light imaging. If the pupil is reflected in the infrared light imaging and the gray of the eye is gray, the object to be identified is determined to be a living body, and vice versa.
- the computer also includes:
- the distance recognition module is connected to the feature recognition module, and is configured to respectively determine a distance between the object to be identified and the infrared camera and the visible light camera after the feature recognition module passes the verification, and between the infrared camera and the visible light camera respectively in front of the object to be identified
- the angle formed combined with the position and angle relationship between the infrared camera and the visible light camera, determines whether the object to be recognized captured by the infrared camera and the visible light camera is the same object, and if so, the determination to maintain the object to be identified as a living object If no, it is determined that the object to be identified is not a living body.
- the present invention has the following advantages:
- Figure 2 is a schematic structural view of the device of the present invention.
- a method of living body detection includes:
- S1 collecting infrared light imaging of the object to be identified through an infrared camera, and collecting visible light imaging of the object to be identified through the visible light camera;
- step S2 if there is no image in the infrared light imaging, it is determined that the object to be identified is not a living body, otherwise, step S3 is performed;
- S3 extracting features of the eye and the face of the object to be recognized in the visible light imaging and the infrared light imaging, and determining whether the object to be identified is a living body based on the extracted features.
- the shooting scene of the photo would be a point source or a parallel source, and there would be only one feature.
- Under the illumination of the infrared fill light there are obvious traces of the point light on the face (such as the tip of the nose is reflected closer to the screen, the cheeks are darker, etc.), and the visible light picture does not have these features.
- the implementation of these classifications uses the leading deep learning techniques of academia at home and abroad. Combining our years of practical experience in the visual industry, we finally got a classifier with good performance, fast speed and small size.
- the real human eyes under infrared light will have pupil reflexes, gray eyes and other features, and the pupils under visible light will not have these features.
- the use of visible light infrared light to distinguish the characteristics of the human eye can further enhance the anti-attack capability.
- Step S3 specifically includes the steps of:
- step S31 determining whether there is a face in both visible light imaging and infrared light imaging, if yes, step S32 is performed, and if no, step S32 is performed;
- S32 Extracting features of the face to be recognized and features of the eye in visible light imaging and infrared light imaging.
- step S3 After being identified as a living body in step S3, the steps are further performed:
- step S6 according to the data obtained in steps S4 and S5, combined with the position and angle relationship between the infrared camera and the visible light camera to determine whether the object to be recognized captured by the infrared camera and the visible light camera is the same object, and if so, maintain The determination that the object is a living body is determined, and if not, it is determined that the object to be identified is not a living body.
- the output is judged by the living body, and the best quality face is selected.
- the angle formed between the front of the object to be recognized and the infrared camera is an angle formed directly in front of the object to be recognized and directly in front of the infrared camera, and an angle formed between the front of the object to be recognized and the infrared camera is directly in front of the object to be identified.
- the angle formed directly in front of the visible light camera is an angle formed directly in front of the visible light camera.
- a device as shown in Figure 2, includes:
- a visible light camera 1 for collecting visible light imaging of an object to be identified
- Infrared camera 2 for collecting infrared light imaging of an object to be identified
- the computer 3 is respectively connected to the visible light camera 1 and the infrared camera 2 for determining whether the object to be identified is a living body according to visible light imaging and infrared light imaging.
- Computer 3 includes:
- a pre-identification module configured to determine whether the image is non-living based on whether there is an image in the infrared light imaging
- the feature recognition module is connected to the pre-identification module, and is configured to extract features of the eye and the face of the object to be recognized in the visible light imaging and the infrared light imaging after the verification of the pre-identification module, and determine whether the object to be identified is a living body based on the extracted features. .
- the feature recognition module includes:
- the first identifying unit is configured to extract features of the face of the object to be recognized in the visible light imaging and the infrared light imaging. If the nose is reflective and the cheek is dark in the infrared imaging, the object to be identified is determined to be a living body, and the opposite is a non-living body.
- the second identifying unit is configured to extract features of the eye to be recognized in the visible light imaging and the infrared light imaging. If the pupil is reflected in the infrared light imaging and the gray of the eye is gray, the object to be identified is determined to be a living body, and vice versa.
- the computer also includes:
- the distance recognition module is connected to the feature recognition module, and is configured to respectively determine a distance between the object to be identified and the infrared camera and the visible light camera after the feature recognition module passes the verification, and between the infrared camera and the visible light camera respectively in front of the object to be identified
- the angle formed combined with the position and angle relationship between the infrared camera and the visible light camera, determines whether the object to be recognized captured by the infrared camera and the visible light camera is the same object, and if so, the determination to maintain the object to be identified as a living object If no, it is determined that the object to be identified is not a living body.
- the whole system can guarantee 99.9% correct rate in the case of excellent illumination, 0% pass rate of video attack, and other attack mode less than 0.1% pass rate.
- the speed can be judged within half a second.
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Abstract
Description
Claims (8)
- 一种活体检测的方法,其特征在于,包括:S1:通过红外线摄像头采集待识别对象的红外光成像,并通过可见光摄像头采集待识别对象的可见光成像;S2:若红外光成像不存在图像,判定待识别对象为非活体,反之,则执行步骤S3;S3:提取可见光成像和红外光成像中待识别对象眼部和脸部的特征,并基于提取的特征判断待识别对象是否为活体。
- 根据权利要求1所述的一种活体检测的方法,其特征在于,所述步骤S3具体包括步骤:S31:判断可见光成像和红外光成像是否都存在脸部,或为是,则执行步骤S32,若为否,则重复步骤S31;S32:提取可见光成像和红外光成像中待识别对象脸部的特征。若红外光成像中鼻尖反光且脸颊偏暗,则进行S33。S33:提取可见光成像和红外光成像中待识别对象眼部的特征。若红外光成像中瞳孔反光且眼白泛灰,则判定待识别对象为活体,反之为非活体。
- 根据权利要求2所述的一种活体检测的方法,其特征在于,当步骤S3中识别为活体后,还执行步骤:S4:分别确定待识别对象与红外线摄像头和可见光摄像头之间的距离;S5:确定待识别对象正前方分别与红外线摄像头和可见光摄像头之间所成的角度;S6:根据步骤S4和S5中得到的数据,结合红外线摄像头和可见光摄像头之间的位置和角度关系确定红外线摄像头和可见光摄像头所捕捉到的待识别对象是否为同一物体,若为是,则维持待识别对象为活体的判定,若为否,则判定待识别对象为非活体。
- 根据权利要求3所述的一种活体检测的方法,其特征在于,所述待识别 对象正前方与红外线摄像头之间所成的角度为待识别对象正前方与红外线摄像头正前方所成的角度,所述待识别对象正前方与红外线摄像头之间所成的角度为待识别对象正前方与可见光摄像头正前方所成的角度。
- 一种实现权利要求1-4中任一所述方法的装置,其特征在于,包括:可见光摄像头,用于采集待识别对象的可见光成像;红外线摄像头,用于采集待识别对象的红外光成像;计算机,分别与可见光摄像头和红外线摄像头连接,用于根据可见光成像和红外光成像判定待识别对象是否为活体。
- 根据权利要求5所述的装置,其特征在于,所述计算机包括:预识别模块,用于基于红外光成像中是否存在图像判定是否为非活体;特征识别模块,与预识别模块连接,用于在预识别模块验证通过后提取可见光成像和红外光成像中待识别对象眼部和脸部的特征,并基于提取的特征判断待识别对象是否为活体。
- 根据权利要求5所述的装置,其特征在于,所述特征识别模块包括:第一识别单元,用于提取可见光成像和红外光成像中待识别对象脸部的特征,若红外光成像中鼻尖反光且脸颊偏暗,则判定待识别对象为活体,反之为非活体第二识别单元,用于提取可见光成像和红外光成像中待识别对象眼部的特征,若红外光成像中瞳孔反光且眼白泛灰,则判定待识别对象为活体,反之为非活体。
- 根据权利要求5所述的装置,其特征在于,所述计算机还包括:距离识别模块,与特征识别模块连接,用于在特征识别模块验证通过后分别确定待识别对象与红外线摄像头和可见光摄像头之间的距离,以及待识别对象正前方分别与红外线摄像头和可见光摄像头之间所成的角度,并结合红外线摄像头和可见光摄像头之间的位置和角度关系确定红外线摄像头和可见光摄像头所捕捉到的待识别对象是否为同一物体,若为是,则维持待识别对象为活体的判定,若为否,则判定待识别对象为非活体。
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SG11201802652YA SG11201802652YA (en) | 2016-08-31 | 2016-11-21 | A living body detection method and device based on infrared and visible binocular images |
PH12018500689A PH12018500689A1 (en) | 2016-08-31 | 2018-03-27 | A living body detection method and device based on infrared and visible binocular images |
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PH12018500689A1 (en) | 2018-10-15 |
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SG11201802652YA (en) | 2018-04-27 |
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