Summary of the invention
The object of the present invention is to provide a kind of intelligent personnel's Gate System and personnel control's management method, realize personnel's bayonet socket of intelligence, for public security department provides convenience to suspect's quick search investigation.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of intelligent personnel's Gate System, comprise:
People's face is captured subsystem, is used to obtain the high definition facial image through all personnel of bayonet socket;
The center Analysis server is used for the high definition facial image is carried out feature extraction and afterwards according to characteristic key;
Data administration subsystem, be used for to people's face capture the high definition facial image that subsystem obtains, the characteristic that the center Analysis server extracts is carried out storage administration;
People's face is captured subsystem, the center Analysis server is connected with switch respectively with data administration subsystem, utilizes switch to constitute a local area network (LAN), carries out communication each other.
Embodiments of the present invention also provide a kind of personnel control's management method, comprise following steps:
Utilize the video camera of front end to obtain high definition facial image through all personnel of bayonet socket;
Utilize the center Analysis server of rear end that the high definition facial image is carried out feature extraction, characteristic and the high definition facial image that extracts is stored in the database;
When needs were retrieved, the center Analysis server of rear end inquired the pairing high definition facial image of the feature that is complementary with search condition according to search condition in database.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are:
Whole system is captured subsystem, center Analysis server and data administration subsystem three parts by front end people face and is constituted, and people's face is captured the high definition facial image that subsystem responsible is obtained all personnel of process bayonet socket; The center Analysis server is responsible for the high definition facial image is carried out feature extraction and afterwards according to characteristic key; The high definition facial image that data administration subsystem is used to store and the characteristic of extraction.People's face is captured subsystem, the center Analysis server is connected with switch respectively with data administration subsystem, utilizes switch to constitute a local area network (LAN), carries out communication each other.Because whole system has adopted front end to capture the pattern that adds back-end analysis, what people's face of front end was captured subsystem output is the high definition facial image, and non-face characteristic, center Analysis server by the rear end carries out feature extraction, reduced the operand of people's face candid photograph subsystem, feasible detection to people's face, candid photograph function can directly be integrated in the video camera, video camera is the collection of responsible image not merely only, realized intelligent personnel's bayonet socket, and can support afterwards retrieval, big convenience the quick search investigation of public security department to the suspect.
Further, the video camera that people's face is captured in the subsystem starts the detection of people's face when the pedestrian enters the virtual coil of setting, the pedestrian's face of going forward side by side follow the tracks of to form the pursuit path of face's target, and the highest image of the face partition that will pick out from pursuit path is as this pedestrian's candid photograph image.Face partition is meant according to human face posture and definition the people's face that detects or trace into is estimated, people's face that attitude is positive more and definition is high more, and its corresponding scoring is also just high more.According to the candid photograph image that face tracking, face partition obtain, effectively guaranteed to obtain to pass through setting regions all personnel's high definition human face photo, thereby can promote the accuracy rate of recognition of face.And, consider the candid photograph at night and unfavorable cloudy day of illumination, people's face is captured in the subsystem and is also included the light filling lamp, thereby has realized round-the-clock people's face candid photograph.
Further, can be the light-duty cascade structure grader of a Weak Classifier by being integrated with each grade in the video camera, the subwindow to be measured in the current image to be detected be carried out people's face detect; Also can the subwindow to be measured in the current image to be detected be carried out people's face detect by being integrated with the cascade vector tree structure detector that comprises a plurality of node classifiers.Because it is non-face that each Weak Classifier of light-duty cascade structure grader can be removed part; Cascade vector tree structure detector is by introducing cascade classifier between the branch node grader, utilize cascade classifier that the non-face subwindow in each branch is effectively removed step by step, reduce the complexity of branch node grader, reduced contained Weak Classifier number.Therefore carry out people's face by light-duty cascade structure grader or cascade vector tree structure detector and detect, can further reduce operand, improve detection speed, guaranteed that further detection, the candid photograph function to people's face can directly be realized by video camera.
Further, video camera also be used for according to current detection to face's average luminance information of people's face the light filling lamp is carried out automatic exposure control, can further effectively improve the definition of face area.
Further, the feature of center Analysis server extraction comprises the human body attributive character and is used for face's texture model feature that people's face is compared.The center Analysis server inquires the pairing high definition facial image of the feature that is complementary with search condition according to search condition in data administration subsystem afterwards according to characteristic key the time; Wherein, search condition is the face's texture model feature according to people's face picture extraction to be checked of input, and/or the human body attributive character of input.Utilization is based on the back search method of face's texture model feature and human body attributive character, can be public security department and when inquiry candid photograph personnel database, effectively dwindle the investigation scope, location suspicion personnel improve the speed of arresting criminal fast, reach the purpose of quick clear up a criminal case.
Embodiment
In the following description, in order to make the reader understand the application better many ins and outs have been proposed.But, persons of ordinary skill in the art may appreciate that even without these ins and outs with based on the many variations and the modification of following each execution mode, also can realize each claim of the application technical scheme required for protection.
For making the purpose, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below in conjunction with accompanying drawing.
First embodiment of the invention relates to a kind of intelligent personnel's Gate System.Intelligent personnel's Gate System of present embodiment adopts front end to capture the pattern that adds back-end analysis, specifically constitute by people's face candid photograph subsystem of front end, the center Analysis server and data administration subsystem three parts of rear end, people's face is captured subsystem, the center Analysis server is connected with switch respectively with data administration subsystem, utilize switch to constitute a local area network (LAN), carry out communication each other, as shown in Figure 1.Also comprised client in intelligent personnel's Gate System shown in Figure 1, this client is connected with switch, is used to realize operating personnel's the instruction input and the feedback result output of intelligent personnel's Gate System.
Wherein, people's face candid photograph subsystem is used to obtain the high definition facial image through all personnel of bayonet socket; The center Analysis server is used for the high definition facial image is carried out feature extraction and afterwards according to characteristic key; Data administration subsystem is used for the high definition facial image that people's face candid photograph subsystem is obtained, the characteristic that the center Analysis server extracts is carried out storage administration.
Specifically, it is the front end core of whole personnel's Gate System that people's face is captured subsystem, be responsible for all personnel through bayonet socket is captured automatically, obtain high definition facial image and corresponding panoramic picture, this people's face candid photograph subsystem is captured three parts such as video camera, light filling lamp, transmission unit by the embedded integrated high definition that possesses people's face candid photograph function and is formed.
Wherein, video camera adopts the video triggering mode that the virtual coil rule is set, starting people's face when the pedestrian enters the virtual coil of setting detects, the pedestrian's face of going forward side by side follow the tracks of to form the pursuit path of face's target, and the highest image of the face partition that will pick out from pursuit path is as this pedestrian's candid photograph image.This video camera also is used at the highest image of the face partition of picking out during as this pedestrian's candid photograph image, write down the shooting time and the location information of the highest image of this face partition, at last information such as the pedestrian's that obtains candid photograph image, corresponding panoramic picture, shooting time, place are reached in the Analysis server of center by network.Owing to do not need the physical trigger device auxiliary in the whole candid photograph process, finish by software fully, so front end candid photograph subsystem structure is simple.According to the candid photograph image that face tracking, face partition obtain, effectively guaranteed to obtain to pass through setting regions all personnel's high definition human face photo, thereby can promote the accuracy rate of recognition of face.And, consider the candid photograph at night and unfavorable cloudy day of illumination, the light filling lamp also is installed near the front end capture machine in the present embodiment, thereby is realized round-the-clock people's face candid photograph.
What deserves to be mentioned is, video camera can according to current detection to face's average luminance information of people's face the light filling lamp is carried out automatic exposure control, thereby further effectively improved the definition of face area.
In addition, video camera can be the light-duty cascade structure grader of a Weak Classifier by each integrated grade of inside, realizes that the subwindow to be measured in the current image to be detected is carried out people's face to be detected, and detects people's face window.Whether each grade Weak Classifier in this light-duty cascade structure grader is the classification of people's face to this subwindow to be measured one by one, if this subwindow to be measured is categorized as non-face by the one-level Weak Classifier, then stop the classification of next stage Weak Classifier to this subwindow to be measured, exporting this subwindow to be measured is non-face testing result; Be people's face if this subwindow to be measured is all classified by each grade Weak Classifier in the described light-duty cascade structure grader, then export the testing result of this subwindow behaviour face to be measured, as shown in Figure 2.Wherein, each grade Weak Classifier in the light-duty cascade structure grader is trained on the basis of all Weak Classifiers before the Weak Classifier at the corresponding levels and is obtained.Because for windows to be detected a large amount of in the image, with respect to non-face window, the people's face window that wherein comprises is few.Therefore must be as a result for the non-face scheme in part that can be removed, rear with respect to the grader of cascade structure at all Weak Classifiers in calculating a strong classifier, it is non-face that each Weak Classifier of light-duty cascade structure grader can be removed part, thereby can judge more fast by a spot of Weak Classifier, reduce operand, reached detection speed faster.
The center Analysis server is the core of whole intelligent personnel's Gate System, main realizes capturing the feature extraction of the pedestrian in the image and function such as personnel's retrieval afterwards.The feature extraction of wherein capturing image comprises the human body attributive character and is used for face's texture model Feature Extraction that people's face is compared.Face's texture model feature is the local grain feature of face just, and these features often are suitable for people's face compare of analysis, but does not possess any physical significance.The human body attributive character just meets the feature of human identification custom, can describe in words, can be used as afterwards the label of retrieval, for example whether the people wears glasses, hair style feature (long hair, bob, shaven head, straight hair or curly hair), beard feature (sparse, dense or do not have), shape of face (state's word face, oval face, round face etc.), height feature (high, short, fat and thin) and the clothing feature (clothes of grid clothes, certain pure color) of being worn etc.
Specifically, the center Analysis server can be realized the human body attributive character and be used for face's texture model Feature Extraction that people's face is compared by comprising following submodule:
The preliminary treatment subelement is used for the high definition facial image of pending feature extraction is carried out preliminary treatment, comprises illumination compensation and noise-removed filtering.
Location normalizing subelement is used for carry out the normalization alignment of positioning feature point and image through the pretreated image of preliminary treatment subelement.
The feature extraction subelement, be used for the image after handling through location normalizing subelement is carried out the extraction of face's texture model Feature Extraction and human body attributive character, and all features that will extract are stored to data administration subsystem by switch, generation candid photograph database.
The center Analysis server is retrieved in data administration subsystem according to search condition afterwards according to characteristic key the time, inquires the pairing high definition facial image of the feature that is complementary with search condition,, returns the facial image that satisfies condition that is.Wherein, search condition is the face's texture model feature according to people's face picture extraction to be checked of input, or the human body attributive character of input.That is to say that retrieval mode mainly contains following two kinds:
(1) based on the retrieval of face's texture model feature: at first import people's face picture to be checked, then carry out positioning feature point, normalization alignment and the texture model Feature Extraction of people's face, calculate this faceform then and capture the similarity between each faceform in the database, sort those and human face similarity facial image to be checked in the output database at last according to similarity.
(2) based on the retrieval of human body attributive character: because each people who is captured has just finished the extraction of human body attributive character in feature extraction, therefore when the retrieval of carrying out based on attributive character, only need select Checking label, system just can finish retrieval apace, for example system can support for wear glasses, long hair and wear the people's of white clothes retrieval.
People's face picture or human body attributive character to be checked can be imported from client, transfer to the center Analysis server by switch.The center Analysis server is by switch, the pairing high definition facial image of feature that is complementary with search condition that inquires to client feedback.
Be not difficult to find, in the present embodiment, because whole system has adopted front end to capture the pattern that adds back-end analysis, and the not only only collection of responsible image, realized intelligent personnel's bayonet socket, and can support afterwards retrieval, big convenience the quick search investigation of public security department to the suspect.And, based on the back search method of faceform's feature and attributive character, can be public security department and when inquiry candid photograph personnel database, dwindle the investigation scope, locate the suspicion personnel fast, improve the speed of arresting criminal.For example public security department need be in capturing database retrieval have a suspect of certain feature (as wear glasses, long hair, state's word face, tall person, wear grid clothes etc.) or import an a suspect's facial image, utilize the back search function to inquire about, thus the facial image the most close in the return data storehouse with a suspect.And the human body attributive character is the feature that available language is described, and has further facilitated the search investigation of public security department.
In addition, need to prove, in the present embodiment, can also expand the real-time comparison that realizes blacklist and report to the police.Such as, in data administration subsystem, store suspect's feature (comprising face's texture model feature and human body attributive character) in advance, the center Analysis server is after the candid photograph image according to the pedestrian extracts feature, directly compare with the suspect's who stores feature, if feature conforms to, output alarm signal then.
Second embodiment of the invention relates to a kind of intelligent personnel's Gate System.Second execution mode improves on the basis of first execution mode, and main improvements are:
In the first embodiment, search condition is the face's texture model feature according to people's face picture extraction to be checked of input, or the human body attributive character of input.
And in the present embodiment, search condition not only can be the face's texture model feature according to people's face picture extraction to be checked of input, or the input the human body attributive character in any, can also be according to the face's texture model feature of people's face picture extraction to be checked of importing and the human body attributive character of input.That is to say intelligent personnel's Gate System support mixed index afterwards of present embodiment.By supporting mixed index mode simultaneously, thereby can reach the better retrieval result, finally in the criminal investigation process, accurately dwindle the investigation scope, reach the purpose of quick clear up a criminal case for public security based on faceform's feature and human body attributive character.
In addition, in the present embodiment, video camera also can carry out people's face to the subwindow to be measured in the current image to be detected and detect by the integrated cascade vector tree structure detector that comprises a plurality of node classifiers in inside.Comprise at least one branch node grader (node classifier that a plurality of child nodes are promptly arranged) in this cascade vector tree structure detector, and, before at least one branch node grader, the no branch node grader (node classifier that promptly has only a child node) of at least one cascade is arranged.Such as shown in Figure 3, cascade vector tree structure detector comprises 15 visual angles altogether, the plane inner rotary is divided into 5 attitudes, is followed successively by the full side (90 ,-54) in a left side, a left side half side (54,-18), accurate positive (18 ,+18), right half side (+18 ,+54) and right full side (+54, + 90) 5 visual angles are subdivided into rotary viewing angle in 3 planes under each inner rotary visual angle, plane again, are followed successively by rotation-30 (45,-15), 0 degree (15 ,+15) and 30 degree (+15 ,+45).Scope that the detectability of this cascade vector tree structure detector can overlay planes outward turning turnback and the scope that the plane inward turning turn 90 degrees like this.
Cascade vector tree structure detector is when carrying out the detection of people's face to the subwindow to be measured in the current image to be detected, when the no branch node grader in the cascade vector tree structure detector is judged to be non-face subwindow with subwindow to be measured, stop and the further detection of the branch node grader of this no branch node grader cascade this subwindow to be measured; When no branch node grader was judged subwindow to be measured for people's face window, the branch node grader that this subwindow to be measured is delivered to this no branch node grader cascade continued detection.
Specifically, for a subwindow to be measured, begin to travel through each node classifier from root node it is carried out the judgement of category attribute, if the node classifier in a certain branch in the cascade vector tree structure detector should be judged to non-face by subwindow to be measured, then stop to visit its child nodes downwards, then the recurrence that makes progress is visited the node classifier in other branch.If subwindow to be measured is by all node classifiers in a certain branch, up to leaf node, then this subwindow is judged to the face for the people, and the visual angle classification of this people's face is exactly the pairing classification of this leaf node.That is to say, each that comprises root node obtains the node classifier of subwindow input to be measured and handles as follows: if be judged to be non-face subwindow, then finish the detection (promptly no longer deliver in child nodes detect) of this branch to this subwindow to be measured; Otherwise, if this node is not a leaf node, then will this subwindow to be measured delivers at least one child node of this node and further detect, if this node has been a leaf node, then judge this subwindow behaviour face, and the visual angle classification of this people's face is exactly the pairing classification of this leaf node.By between the branch node grader, introducing cascade classifier, utilize cascade classifier that the non-face subwindow in each branch is effectively removed step by step, reduced the complexity of branch node grader, reduced contained Weak Classifier number, thereby reduced operand, when guaranteeing verification and measurement ratio, improved detection speed.
Certainly, video camera also can carry out people's face by other algorithms and detect, and does not give unnecessary details one by one in this application.
Third embodiment of the invention relates to a kind of personnel control's management method, and idiographic flow as shown in Figure 4.
In step 410, utilize the video camera of front end to obtain high definition facial image through the personnel of bayonet socket.Specifically, as shown in Figure 5, start people's face and detect when the pedestrian enters the virtual coil of setting, and detected people's face is carried out the pursuit path that face tracking forms face's target, the highest image of the face partition that will pick out from pursuit path is as this pedestrian's candid photograph image.At the highest image of the face partition of picking out during as this pedestrian's candid photograph image, write down the shooting time and the location information of the highest image of this face partition, the panoramic picture that obtains the highest image of this face partition together transfers to the rear end with each pedestrian's candid photograph image and corresponding shooting time, location information, panoramic picture by switch center Analysis server.Wherein, video camera also can according to current detection to face's average luminance information of people's face the light filling lamp is carried out automatic exposure control, utilize the light filling lamp to expose, shown in the dotted portion among Fig. 5 for video camera.
In step 420, utilize the center Analysis server of rear end that the high definition facial image is carried out feature extraction, characteristic and the high definition facial image that extracts is stored in the database.
Specifically, the feature of center Analysis server extraction comprises the human body attributive character and is used for face's texture model feature that people's face is compared.The idiographic flow of feature extraction as shown in Figure 6, capture image for one, at first carry out image preliminary treatment (comprising illumination compensation and noise-removed filtering), carry out the normalization alignment of positioning feature point and image then, carry out the extraction of face's texture model Feature Extraction and human body attributive character at last, and all features are stored, generate and capture database.
When needs are retrieved, enter step 430, the center Analysis server of rear end inquires the pairing high definition facial image of the feature that is complementary with search condition according to search condition in database.Wherein, search condition is the face's texture model feature according to people's face picture extraction to be checked of input, or the human body attributive character of input.
Specifically, at first, import people's face picture or human body attributive character to be checked by switch center Analysis server to the back-end by client.Retrieval flow as shown in Figure 7, the frame of broken lines among Fig. 7 is the retrieval mode flow chart based on face's texture model feature, solid box is the retrieval mode flow chart based on the human body attributive character.After getting access to result for retrieval, the center Analysis server of rear end is by switch, the pairing high definition facial image of feature that is complementary with search condition that inquires to client feedback.
Be not difficult to find that present embodiment is and the corresponding method execution mode of first execution mode, present embodiment can with the enforcement of working in coordination of first execution mode.The correlation technique details of mentioning in first execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in the present embodiment also can be applicable in first execution mode.
Four embodiment of the invention relates to a kind of personnel control's management method.The 4th execution mode improves on the basis of the 3rd execution mode, and main improvements are:
In the 3rd execution mode, search condition is the face's texture model feature according to people's face picture extraction to be checked of input, or the human body attributive character of input.
And in the present embodiment, search condition not only can be the face's texture model feature according to people's face picture extraction to be checked of input, or the input the human body attributive character in any, can also be according to the face's texture model feature of people's face picture extraction to be checked of importing and the human body attributive character of input.That is to say that present embodiment is also supported mixed index afterwards.By supporting mixed index mode simultaneously, thereby can reach the better retrieval result, finally in the criminal investigation process, accurately dwindle the investigation scope, reach the purpose of quick clear up a criminal case for public security based on faceform's feature and human body attributive character.
Be not difficult to find that present embodiment is and the corresponding method execution mode of second execution mode, present embodiment can with the enforcement of working in coordination of second execution mode.The correlation technique details of mentioning in second execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in the present embodiment also can be applicable in second execution mode.
Need to prove that each method execution mode of the present invention all can be realized in modes such as software, hardware, firmwares.No matter the present invention be with software, hardware, or the firmware mode realize, instruction code can be stored in the memory of computer-accessible of any kind (for example permanent or revisable, volatibility or non-volatile, solid-state or non-solid-state, fixing or removable medium or the like).Equally, memory can for example be programmable logic array (Programmable Array Logic, be called for short " PAL "), random access memory (Random Access Memory, be called for short " RAM "), programmable read only memory (Programmable Read Only Memory, be called for short " PROM "), read-only memory (Read-Only Memory, be called for short " ROM "), Electrically Erasable Read Only Memory (Electrically Erasable Programmable ROM, be called for short " EEPROM "), disk, CD, digital versatile disc (Digital Versatile Disc is called for short " DVD ") or the like.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.