CN115131868A - Intelligent door lock system and control method of intelligent door lock - Google Patents
Intelligent door lock system and control method of intelligent door lock Download PDFInfo
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- G06—COMPUTING; CALCULATING OR COUNTING
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- 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
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B45/00—Alarm locks
- E05B45/06—Electric alarm locks
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- G06V10/74—Image or video pattern matching; Proximity measures in feature spaces
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- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00563—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns
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Abstract
The application relates to an intelligent door lock system and a control method of an intelligent door lock. And when the human face is identified, carrying out image reconstruction on the first human face image of the infrared image and the second human face image of the visible light image to generate a reconstructed image. And extracting the face features of the reconstructed image, matching the face features with the features in the pre-stored face feature set, sending the matching result to the intelligent lock control device, and after the matching is successful, generating a door lock opening instruction by the intelligent lock control device and sending the door lock opening instruction to the door lock control device. The cat eye plate and the face recognition device share the image acquisition device, so that the structural design is relatively simple, the cost is reduced, and the reliability of the system is improved.
Description
Technical Field
The application relates to the technical field of smart home, in particular to an intelligent door lock system and a control method of an intelligent door lock.
Background
At present, along with the continuous development of the internet of things technology, more and more families begin to popularize and use the intelligent door lock, the intelligent door lock is not only commonly applied to the family door lock, but also used in enterprise door locks, community door locks and factory door locks. Compared with the traditional key door lock, the intelligent door lock has much more convenience and higher safety.
At the present stage, the intelligent door lock has a face recognition function and an electronic peep hole photographing function, the face recognition part and the electronic peep hole photographing part are two independent and separated sub-modules, the structural design is relatively complex, the cost is high, the two sub-modules do not have any public device, and the reliability of the system is reduced due to the fact that more devices are arranged.
Disclosure of Invention
The application aims to provide an intelligent door lock system and a control method of the intelligent door lock, which are used for solving at least one technical problem.
The above object of the present invention is achieved by the following technical solutions:
in a first aspect, the present application provides an intelligent door lock system, which adopts the following technical scheme:
image acquisition device for gather the outer image of door, and send the outer image of door to cat eye board and face identification device, the outer image of door includes: visible light images and infrared images;
the cat eye plate is used for displaying the image outside the door;
the face recognition device is used for carrying out face recognition on the visible light image and/or the infrared image to obtain a recognition result;
when the recognition result is that a human face is recognized, carrying out image reconstruction on a first human face image of the infrared image and a second human face image of the visible light image to generate a reconstructed image;
extracting the face features of the reconstructed image, matching the face features with the features in the prestored face feature set to obtain a matching result, and sending the matching result to the intelligent lock control device;
the intelligent lock control device is used for generating a door lock opening instruction and sending the door lock opening instruction to the door lock control device after the matching result is that the matching is successful;
and the door lock control device is used for unlocking the door lock according to the door lock unlocking instruction.
By adopting the technical scheme, the image acquisition device acquires the outdoor image and sends the outdoor image to the cat eye plate and the face recognition device, wherein the outdoor image comprises the visible light image and the infrared image, the cat eye plate displays the outdoor image, the user can conveniently check the outdoor situation, and the face recognition device performs face recognition on the visible light image and/or the infrared image to obtain the recognition result. And after the human face is identified, carrying out image reconstruction on the first human face image of the infrared image and the second human face image of the visible light image to generate a reconstructed image. And extracting the face features of the reconstructed image, matching the face features with the features in the pre-stored face feature set, sending the matching result to the intelligent lock control device, and when the matching result is successful, generating a door lock opening instruction by the intelligent lock control device and sending the door lock opening instruction to the door lock control device. Therefore, the cat-eye plate and the face recognition device share the image acquisition device, so that the structural design is relatively simple, the cost is reduced, and the reliability of the system is improved.
The present application may be further configured in a preferred example to: the face recognition device is used for, when extracting the face features of the reconstructed image:
judging whether the reconstructed image is a stereo image; and if so, extracting the face features of the reconstructed image.
By adopting the technical scheme, after whether the reconstructed image is a stereo image is judged, the human face features are extracted, the condition that the door lock is opened by using a plane photo for face recognition can be avoided, the authenticity of the face is ensured, the face information is difficult to steal, and the safety of the intelligent door lock is improved.
The present application may be further configured in a preferred example to: the face recognition device is configured to, when performing image reconstruction on the first face image of the infrared image and the second face image of the visible light image to generate a reconstructed image:
carrying out binocular correction on a first face image of the infrared image and a second face image of the visible light image by using epipolar constraint so as to enable feature points of the first face image and the second face image to be located on the epipolar lines;
matching the feature points of the corrected first face image and the corrected second face image to obtain a plurality of groups of matched feature points;
and carrying out image reconstruction according to the multiple groups of matched feature points to generate the reconstructed image.
By adopting the technical scheme, binocular correction is carried out on the first face image of the infrared image and the second face image of the visible light image by using polar line constraint, the feature points of the corrected first face image and the corrected second face image are matched to obtain multiple groups of matched feature points, image reconstruction is carried out according to the multiple groups of matched feature points, and a reconstructed image is generated. And binocular correction is performed by using epipolar constraint, and a reconstructed image is generated, so that the accuracy of the reconstructed image is improved.
The application may be further configured in a preferred example to: the intelligent door lock system further comprises: a door opening and closing state detection device and a prompt device;
wherein, switch door state detection device for: when the door lock is opened, acquiring an image acquired by the image acquisition device; judging whether a target object exists in the image or not, and if not, determining that the door is in an open state; if the target object exists, determining the position of the target object, and matching the position of the target object with the position of a standard target object; when the matching fails, determining that the door is in an open state; sending the state of the door to the intelligent lock control device;
correspondingly, the intelligent lock control device is also used for: when the door is in an open state, a prompt instruction is sent to the prompt device.
By adopting the technical scheme, the intelligent door lock system further comprises a door opening and closing state detection device and a prompt device, when the door is detected to be in the opening state according to the door opening and closing state detection device, the intelligent lock control device sends a prompt instruction to the prompt device to carry out door closing prompt, potential safety hazards caused by the fact that the door is not in the closing state can be reduced, and safety is improved.
The present application may be further configured in a preferred example to: the intelligent door lock system further comprises:
at least one authentication device for collecting authentication information and authenticating the authentication information to obtain an authentication result and sending the authentication result to the intelligent lock control device;
correspondingly, the intelligent lock control device is also used for: and when the authentication result is that the authentication is successful, sending an opening instruction to the door lock control device.
By adopting the technical scheme, the authentication device collects and authenticates the authentication information, sends the authentication result to the intelligent lock control device, and sends an opening instruction to the door lock control device to control the door lock to be opened if the authentication result is successful. The authentication device is used for authenticating the authentication information, so that the safety of the intelligent door lock can be improved, and the various authentication devices enrich the mode of opening the intelligent door lock and improve the user experience.
The present application may be further configured in a preferred example to: the intelligent door lock system further comprises:
the sensing device is used for acquiring sensing signals outside the door and sending the sensing signals to the intelligent lock control device, and the sensing signals indicate whether a target object tends to the intelligent door lock;
correspondingly, intelligence lock control device still is used for: when the target object tends to the intelligent door lock is determined to exist according to the sensing signal, the intelligent lock control device is controlled to enter a working state, and meanwhile, the power switches of the authentication device and the face recognition device are turned on; and when the situation that no target object tends to the intelligent door lock is determined according to the sensing signal, controlling the intelligent lock control device to enter a dormant state, and simultaneously turning off the power switches of the authentication device and the face recognition device.
Through adopting above-mentioned technical scheme, sensing device gathers the sensing signal outdoors to with sensing signal transmission to intelligent lock control device. And determining whether the target object tends to the intelligent door lock according to the sensing signal, and if so, controlling the intelligent lock control device to enter a working state and simultaneously starting power switches of the authentication device and the face recognition device. The sensing device can control the corresponding device to enter the working state when a target object tends to the intelligent door lock, and control the corresponding device to enter the dormant or closed state at other times, so that the intelligent lock control device, the authentication device and the face recognition device are prevented from being always in the working state, the working time of the corresponding device is reduced, the service life is prolonged, and the electric quantity of the intelligent door lock system is saved.
The present application may be further configured in a preferred example to: the intelligent door lock system further comprises:
the power supply information acquisition device is used for acquiring the residual electric quantity of the power supply and sending the residual electric quantity to the intelligent lock control device;
correspondingly, the intelligent lock control device is also used for: and when the residual electric quantity is smaller than a preset threshold value, determining a to-be-started identification device group corresponding to the residual electric quantity from the corresponding relation between the preset electric quantity and the started identification device group, wherein the to-be-started identification device group comprises at least one identification device, and the identification device comprises an authentication device and the face identification device.
By adopting the technical scheme, the power supply information acquisition device is used for acquiring the residual electric quantity of the power supply and sending the residual electric quantity to the intelligent lock control device, and when the residual electric quantity is smaller than the preset threshold value, the identification device group to be started corresponding to the residual electric quantity is determined. The power supply information acquisition device and the intelligent lock control device can ensure that under certain electric quantity, only the available identification equipment under the electric quantity is opened, the loss of the electric quantity is reduced, and the service time of the intelligent lock is prolonged.
The present application may be further configured in a preferred example to: the intelligent door lock system further comprises:
and the communication device is connected with the cat-eye plate and the intelligent lock control device and is used for sending the outdoor image and the door lock unlocking record information to a target user side.
By adopting the technical scheme, the connected communication device is used for sending the image outside the door and the door lock opening record information to the target user side. The user can look over the image outdoors through the target user side, can easily insights the thing that takes place outdoors in the room, can look over the record information that the lock was opened at the customer end simultaneously, has improved intelligent lock system's security.
The application may be further configured in a preferred example to: the intelligent lock control device is also used for:
when the matching fails, acquiring an outdoor image acquired by the image acquisition device in real time, and judging whether personnel in the outdoor image perform dangerous actions or not, or judging whether the personnel in the outdoor image are dangerous personnel or not based on a preset dangerous personnel library; if yes, alarm information is sent out.
By adopting the technical scheme, after matching fails, whether dangerous actions are performed by personnel in the images and whether dangerous personnel are judged based on the dangerous personnel library is judged through judgment, if so, alarm information is sent out, and the safety of the intelligent lock is improved.
In a second aspect, the present application provides a control method for an intelligent door lock, which adopts the following technical scheme:
image acquisition device gathers outdoor image to send outdoor image to cat eye board and face identification device, outdoor image includes: visible light images and infrared images;
the cat eye plate displays the image outside the door;
the face recognition device carries out face recognition on the visible light image and/or the infrared image to obtain a recognition result; when the recognition result is that a human face is recognized, carrying out image reconstruction on a first human face image of the infrared image and a second human face image of the visible light image to generate a reconstructed image; extracting the face features of the reconstructed image, matching the face features with features in a prestored face feature set to obtain a matching result, and sending the matching result to an intelligent lock control device;
the intelligent lock control device generates a door lock opening instruction and sends the door lock opening instruction to the door lock control device after the matching result is that the matching is successful;
and the door lock control device opens the door lock according to the door lock opening instruction.
By adopting the technical scheme, the image acquisition device acquires the outdoor image and sends the outdoor image to the cat eye plate and the face recognition device, wherein the outdoor image comprises the visible light image and the infrared image, the cat eye plate displays the outdoor image, a user can conveniently check the outdoor condition, and the face recognition device performs face recognition on the visible light image and/or the infrared image to obtain a recognition result. And after the human face is identified, carrying out image reconstruction on the first human face image of the infrared image and the second human face image of the visible light image to generate a reconstructed image. And extracting the face features of the reconstructed image, matching the face features with the features in the pre-stored face feature set, sending the matching result to the intelligent lock control device, and when the matching result is successful, generating a door lock opening instruction by the intelligent lock control device and sending the door lock opening instruction to the door lock control device. Therefore, the image acquisition device is shared by the cat-eye plate and the face recognition device, so that the structural design is relatively simple, the cost is reduced, and the reliability of the system is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the image acquisition device acquires an outdoor image and sends the outdoor image to the cat eye plate and the face recognition device, wherein the outdoor image comprises a visible light image and an infrared image, the cat eye plate displays the outdoor image, a user can conveniently check the outdoor condition, and the face recognition device performs face recognition on the visible light image and/or the infrared image to obtain a recognition result. And after the human face is identified, carrying out image reconstruction on the first human face image of the infrared image and the second human face image of the visible light image to generate a reconstructed image. And extracting the face features of the reconstructed image, matching the face features with the features in the pre-stored face feature set, sending the matching result to the intelligent lock control device, and when the matching result is successful, generating a door lock opening instruction by the intelligent lock control device and sending the door lock opening instruction to the door lock control device. Therefore, the image acquisition device is shared by the cat-eye plate and the face recognition device, so that the structural design is relatively simple, the cost is reduced, and the reliability of the system is improved.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent door lock system according to an embodiment of the present application;
fig. 2 is a schematic flowchart of face authentication recognition according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a specific implementation of an intelligent door lock system according to an embodiment of the present application;
fig. 4 is a flowchart illustrating a control method of an intelligent door lock according to an embodiment of the present application.
Detailed Description
The present application is described in further detail below with reference to fig. 1-4.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent laws within the scope of the present application.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.
The embodiment of the application provides an intelligent door lock system, as shown in fig. 1, the intelligent door lock system specifically may include:
the image acquisition device 110 is configured to acquire an outdoor image and send the outdoor image to the cat eye plate 120 and the face recognition device 130, where the outdoor image includes: visible light images and infrared images;
a cat-eye plate 120 for displaying an image outside the door;
the face recognition device 130 is used for performing face recognition on the visible light image and/or the infrared image to obtain a recognition result;
when the recognition result is that a human face is recognized, carrying out image reconstruction on a first human face image of the infrared image and a second human face image of the visible light image to generate a reconstructed image;
extracting the face features of the reconstructed image, matching the face features with the features in the pre-stored face feature set to obtain a matching result, and sending the matching result to the intelligent lock control device 140;
the intelligent lock control device 140 is used for generating a door lock opening instruction and sending the door lock opening instruction to the door lock control device 150 after the matching result is successfully matched;
and a door lock control device 150 for opening the door lock according to the door lock opening instruction.
The intelligent door lock system provided by the embodiment of the application can be applied to household door locks, enterprise door locks, cell unit door locks, factory area door locks, laboratory door locks and the like.
The image acquisition device 110 is installed in the outside of door, gathers outdoor image through the image acquisition device 110 to with outdoor image transmission to cat eye board 120 and face identification device 130, its sending method can adopt wireless transmission mode or wired transmission mode, to the mode of sending outdoor image to cat eye board 120 and face identification device 130, this application embodiment no longer prescribes a limit, as long as can send successfully can. The out-door image includes: the human face image acquisition system comprises a visible light image and an infrared image, wherein the visible light image is a human face color image output by a common camera, namely an image acquired under natural light. The Infrared image is an Infrared (IR) image output by an assembly of an Infrared floodlight and an IR camera. The cat-eye plate 120 and the face recognition device 130 share one set of the image acquisition device 110, so that the structural design is relatively simple, and the cost is reduced.
The cat-eye plate 120 is used for displaying images outside the door, and is convenient for viewing conditions outside the door. Further, a physical button for unlocking can be further arranged on the cat eye plate 120, and an indoor person can trigger a door lock unlocking instruction by pressing and send the door lock unlocking instruction to the intelligent lock control device 140. Certainly, the cat eye board can also set up wireless communication module, sends out the image outdoors to client equipment through wireless communication module to the personnel that client equipment corresponds can know visitor's information in real time. The type of the Display screen of the cat-eye plate 120 is not limited in this application, and may be an LCD (Liquid Crystal Display) or an OLED (Organic Light-Emitting Diode).
The face recognition device 130 is configured to perform face recognition on the visible light image and/or the infrared image to obtain a recognition result. And when the recognition result is that the human face is recognized, carrying out image reconstruction on the first human face image of the infrared image and the second human face image of the visible light image to generate a reconstructed image. Extracting the face features of the reconstructed image, matching the face features with the features in the pre-stored face feature set to obtain a matching result, and sending the matching result to the intelligent lock control device 140. The image acquisition device 110 is specifically a binocular camera device, and the face recognition device 130 in the embodiment of the present application can perform face recognition by using at least one of a visible light image and an infrared image acquired by a binocular camera to determine whether a face exists in the image. Specifically, the binocular camera needs to be calibrated in production, the spatial polarization deviation of the binocular camera is not more than plus or minus 0.8 degrees (within 1 meter), and the physical deviation in camera production is controllable.
For image reconstruction, in one possible case, the image reconstruction is implemented as follows: and respectively carrying out effective feature analysis on a first face image of the infrared image and a second face image of the visible light image, wherein the effective feature analysis refers to selecting features which can best represent the face after image processing, feature extraction and feature selection, carrying out image registration based on contour information of the face, carrying out effective feature extraction on the infrared image and the visible light image after image registration according to effective feature analysis results, carrying out image superposition, completing reconstruction of the visible light image and the infrared image, and generating a reconstructed image. In another possible situation, the search matching algorithm of the optimized spatial coordinate point can be utilized to enable the first face image and the second face image to be rapidly fused and obtain accurate point cloud data so as to obtain a reconstructed image, and it can be understood that the matching and synthesizing time of the search matching algorithm of the optimized spatial coordinate point is less than 15ms, so that the generation efficiency of the reconstructed image can be greatly improved.
Further, the face recognition device 130 may be specifically configured to, when performing image reconstruction on the first face image of the infrared image and the second face image of the visible light image to generate a reconstructed image: the first face image and the second face image are subjected to deviation rectification processing, and image reconstruction is performed by utilizing the first face image and the second face image subjected to deviation rectification processing, so that the spectral difference existing between the infrared face image and the color face image can be reduced, and the accuracy of three-dimensional restoration is improved.
The pre-stored face feature set is face information of one or more persons recorded by an administrator before the intelligent door lock system is used, and the face feature set is formed. When the matching degree of the human face features and the features in the pre-stored human face feature set is higher than a threshold value, determining that the matching is successful; and when the matching degree is lower than the threshold value, determining that the matching fails, wherein the threshold value is set by a technician. When image matching is performed, matching can be performed not only by extracting features but also by extracting gray scales in an image.
It can be understood that, for the face features with the door opening and closing authority pre-stored in the face recognition device 130, the administrator may add and delete the face features according to actual needs. The intelligent lock control device 140 is used for generating a door lock unlocking instruction and sending the door lock unlocking instruction to the door lock control device 150 when the identification result is that the identification is successful; when the identification result is that the identification fails, the intelligent lock control device 140 does not generate an open instruction.
The door lock control device 150 is configured to open the door lock according to the door lock opening instruction sent by the intelligent lock control device 140.
Therefore, in this embodiment of the application, the image acquisition device 110 acquires an outdoor image, and sends the outdoor image to the cat eye plate 120 and the face recognition device 130, where the outdoor image includes a visible light image and an infrared image, the cat eye plate 120 displays the outdoor image, so that a user can conveniently view an outdoor situation, and the face recognition device 130 determines to perform face recognition on the visible light image and/or the infrared image to obtain a recognition result. And after the human face is identified, carrying out image reconstruction on the first human face image of the infrared image and the second human face image of the visible light image to generate a reconstructed image. Extracting the face features of the reconstructed image, matching the face features with the features in the pre-stored face feature set, sending the matching result to the intelligent lock control device 140, and when the matching result is successful, generating a door lock opening instruction by the intelligent lock control device 140 and sending the door lock opening instruction to the door lock control device 150. It can be seen that the image capturing device 110 is shared by the peep hole plate 120 and the face recognition device 130, so that the structural design is relatively simple, the cost is reduced, and the system reliability is improved.
Further, in order to ensure the authenticity of the human face and improve the security of the intelligent door lock system, in the embodiment of the present application, the human face recognition device 130 is configured to, when performing extracting the human face features of the reconstructed image:
judging whether the reconstructed image is a three-dimensional image; and if so, extracting the face features of the reconstructed image.
According to the embodiment of the application, point cloud data of a face part is restored by using a binocular stereo vision principle, whether a reconstructed image is a stereo image or not is judged by using the point cloud data, and if yes, face features of the reconstructed image are extracted; if not, the reconstructed image is a plane image. When judging whether the reconstructed image is a stereo image, in an implementation mode, the point cloud data can be input into a pre-trained stereo anti-counterfeiting network, and the input point cloud data is classified by using the stereo anti-counterfeiting network so as to determine whether the reconstructed image is a stereo image or a plane image; in another realizable mode, acquiring depth information of organ points in a face image and a face posture of the face image; according to the depth information and the face pose, whether the face image is a three-dimensional face image is judged, of course, whether the face image is a living three-dimensional face can be determined by using the wavelength of light reflected from the face, and of course, whether the reconstructed image is a three-dimensional image can be judged by other methods, which is not limited in this embodiment.
Therefore, in the embodiment of the application, after the reconstructed image is judged to be the stereo image, the human face feature is extracted, the condition that the door lock is opened by using the plane photo for face recognition can be avoided, the authenticity of the human face is ensured, the human face information is difficult to steal, and the safety of the intelligent door lock is improved.
A schematic flow chart of face authentication recognition, which may specifically refer to fig. 2. The image acquisition device 110 acquires an outdoor image and then sends the outdoor image to the face recognition device 130, the face recognition device 130 performs face positioning on the outdoor image (including a visible light image and an infrared image) to obtain a first face image and a second face image, performs image synthesis on the first face image of the infrared image and the second face image of the visible light image to obtain a reconstructed image, and performs anti-counterfeiting judgment based on the reconstructed image to determine whether the reconstructed image is a stereo image; after the stereo image is determined, extracting the face features of the reconstructed image and carrying out searching comparison with the features in the pre-stored face feature set to determine whether matching can be carried out or not; if the matching is successful, the verification is determined to be successful, and if the matching is failed, the verification is determined to be failed.
Further, in order to improve the accuracy of the reconstructed image, in this embodiment of the application, the face recognition device 130, when performing image reconstruction on the first face image of the infrared image and the second face image of the visible light image to generate a reconstructed image, is configured to:
carrying out binocular correction on a first face image of the infrared image and a second face image of the visible light image by using epipolar constraint so as to enable feature points of the first face image and the second face image to be located on the epipolar lines;
for the embodiment of the application, polar constraint is utilized to carry out binocular correction so as to enable the same characteristic point of two images to be on the same straight line in the horizontal direction, namely that the two images which are actually aligned in a non-coplanar line are corrected to be aligned in a coplanar line. After binocular correction is carried out by using epipolar constraint, the feature points can be positioned on the epipolar lines in the two images, so that only search on the epipolar lines is needed when feature point matching is carried out, and search on the whole two-dimensional image is not needed.
Matching the feature points of the corrected first face image and the corrected second face image to obtain a plurality of groups of matched feature points;
and carrying out image reconstruction according to the plurality of groups of feature points to generate a reconstructed image.
For the embodiment of the application, the feature points of the corrected first face image and the corrected second face image are matched to obtain multiple groups of matched feature points, parallax estimation is performed on the multiple groups of matched feature points, and the images are reconstructed by using the obtained parallax information.
Therefore, in the embodiment of the application, binocular correction is performed on a first face image of an infrared image and a second face image of a visible light image by using epipolar constraint, feature points of the corrected first face image and the corrected second face image are matched to obtain multiple groups of matching feature points, image reconstruction is performed according to the multiple groups of matching feature points, and a reconstructed image is generated. And binocular correction is performed by using epipolar constraint to generate a reconstructed image, so that the accuracy of the reconstructed image is improved.
Further, in order to improve the security of intelligent lock, in this application embodiment, intelligent lock system still includes: a door opening and closing state detection device and a prompt device;
wherein, switch door state detection device for: when the door lock is unlocked, acquiring an image acquired by the image acquisition device 110; judging whether a target object exists in the image, if not, determining that the door is in an open state; if the target object exists, determining the position of the target object, and matching the position of the target object with the position of a standard target object; when the matching fails, determining that the door is in an open state; sending the state of the door to the intelligent lock control device 140;
accordingly, the smart lock control device 140 is further configured to: when the door is in an open state, a prompt instruction is sent to the prompt device.
In the embodiment of the present application, the target object is not limited, and the user may customize the setting as long as the target object can be a fixed marker. After the door lock is opened, setting time intervals, the door opening and closing state detection device acquires an image acquired by the image acquisition device 110, and judges whether a target object exists in the image, specifically, when the door opening and closing state detection device judges whether the target object exists in the image, the door opening and closing state detection device can extract features of the image, compares the extracted features with standard features of the pre-stored target object, and if the features matched with the target object do not exist in the image, determines that the target object does not exist in the image, and the door is in an open state at the moment; if the image has the characteristics matched with the target object, determining that the target object exists in the image, and further specifically using the door opening and closing state detection device for: determining the position of the target object in the current state according to the pixel coordinates of the target object features in the image, matching the position of the target object with the standard position of the target object, and determining that the door is in a closed state if the position of the target object is matched with the standard position of the target object; if not, it is determined that the door is in the open state. The door opening and closing state detection device sends the state of the door to the intelligent lock control device 140.
After the intelligent lock control device 140 obtains the state of the door, when the door is in the open state, a prompt instruction is sent to the prompt device.
The embodiment of the application does not limit the prompting device, specifically, the prompting device can be an acoustic prompting device, an optical prompting device and the like, and the prompting device can prompt a user to close a door in time.
It can be seen that, in the embodiment of the present application, the intelligent door lock system further includes a door opening and closing state detection device and a prompt device, and when the door opening and closing state detection device detects that the door is in an open state, the intelligent lock control device 140 sends a prompt instruction to the prompt device to prompt the user to close the door, so that potential safety hazards caused by the fact that the door is not in a closed state can be reduced, and safety is improved.
Further, for make the mode variety of opening intelligent lock when guaranteeing intelligent lock security, in this application embodiment, intelligent lock system still includes:
at least one authentication device for collecting authentication information and authenticating the authentication information to obtain an authentication result and sending the authentication result to the intelligent lock control device 140;
accordingly, the smart lock control device 140 is further configured to: if the authentication result is successful, an unlock command is sent to the door lock control device 150.
For the embodiment of the present application, the authentication device in the intelligent door lock system includes, but is not limited to, any one or more of the following: fingerprint authentication device, password authentication device, card authentication device, iris authentication device, etc. The authentication device can collect authentication information and match the collected authentication information with standard authentication information, if the information is matched, the authentication result is determined to be successful, otherwise, the authentication result is determined to be failed, and the authentication result is sent to the intelligent lock control device 140. When the authentication result is that the authentication is successful, the intelligent lock control device 140 sends an unlocking instruction to the door lock control device 150 to control the door lock to be unlocked.
It can be seen that, in the embodiment of the present application, the authentication device collects the authentication information and authenticates the authentication information, and sends the authentication result to the intelligent lock control device 140, and if the authentication result is successful, sends an unlocking instruction to the door lock control device 150 to control the door lock to be unlocked. The authentication device is used for authenticating the authentication information, so that the safety of the intelligent door lock can be improved, and the various authentication devices enrich the mode of opening the intelligent door lock and improve the user experience.
Further, in order to save the electric quantity of intelligent lock and increase of service life, in this application embodiment, intelligent lock system still includes:
the sensing device is used for acquiring sensing signals outside the door and sending the sensing signals to the intelligent lock control device 140, and the sensing signals indicate whether a target object tends to the intelligent door lock;
accordingly, the smart lock control device 140 is further configured to: when it is determined that the target object tends to the intelligent door lock according to the sensing signal, controlling the intelligent lock control device 140 to enter a working state, and simultaneously turning on power switches of the authentication device and the face recognition device 130; when it is determined that there is no target object tending to the smart door lock based on the sensing signal, the smart lock control device 140 is controlled to enter a sleep state, and the power switches of the authentication device and the face recognition device 130 are turned off.
For the embodiment of the application, the sensing device is used for acquiring the sensing signal outside the door, and the sensing signal is used for judging whether a target object tends to the intelligent door lock. In an implementation manner, the sensing device is a distance sensor, and is configured to collect a distance between the target object and the intelligent door lock, use distance information as a sensing signal, and further control the intelligent lock control device 140 to enter a working state when it is determined that the target object tends to the intelligent door lock according to the distance information, and simultaneously turn on power switches of the authentication device and the face recognition device 130; if the distance between the target object and the intelligent door lock is increased or unchanged according to the sensing signal, it can be determined that the target object does not tend to the intelligent door lock, the intelligent lock control device 140 is controlled to enter the dormant state, and the power switches of the authentication device and the face recognition device 130 are turned off.
It can be seen that, in the embodiment of the present application, the sensing device is configured to collect a sensing signal outside the door, and send the sensing signal to the smart lock control device 140. And determining whether the target object tends to the intelligent door lock according to the sensing signal, and if so, controlling the intelligent lock control device 140 to enter a working state and simultaneously starting power switches of the authentication device and the face recognition device 130. By using the sensing device, when a target object tends to the intelligent door lock, the corresponding device is controlled to enter a working state, and the corresponding device is controlled to enter a dormant or closed state at other times, so that the intelligent lock control device 140, the authentication device and the face recognition device 130 are prevented from being always in the working state, the working time of the corresponding device is shortened, the service life is prolonged, and the electric quantity of the intelligent door lock system is saved.
Specifically, a schematic structural diagram of an intelligent door lock system is provided in the embodiment of the present application, and of course, other types of structural diagrams may also be adopted, which is not limited in the embodiment of the present application, and specifically refer to fig. 3. The intelligent lock control device 140 corresponds to the intelligent lock control panel and the intelligent lock rear control panel in fig. 3; the image acquisition device 110 can communicate with the face recognition device 130 to transmit images outside the door, and then the face recognition device 130 performs face authentication recognition by using an algorithm to obtain a recognition result and sends the recognition result to the intelligent lock control board; the cat-eye plate 120 may communicate with the image acquisition device 110 to transmit an outdoor image, and may also communicate with the face recognition device 130 to transmit an outdoor image, which is not limited in the embodiment of the present application; the sensing device can acquire a sensing signal to perform signal transmission with the intelligent lock control panel in the intelligent lock control device 140; the cat-eye plate 120 can be connected with a wireless communication module such as a wifi module, and sends the outdoor image to the client device through the wireless communication module.
Further, in order to reduce the loss of electric quantity, the live time of extension intelligent lock, in this application embodiment, intelligent lock system still includes:
the power supply information acquisition device is used for acquiring the residual electric quantity of the power supply and sending the residual electric quantity to the intelligent lock control device 140;
correspondingly, the intelligent lock control device 140 is further configured to: and when the residual electric quantity is smaller than a preset threshold value, determining a to-be-started identification device group corresponding to the residual electric quantity from the corresponding relation between the preset electric quantity and the started identification device group, wherein the to-be-started identification device group comprises at least one identification device, and the identification device comprises an authentication device and a face identification device 130.
It will be appreciated that different identification means have different requirements with respect to the amount of operating power. In the embodiment of the present application, a power supply information acquisition device is provided to acquire the remaining power amount of the power supply and send the remaining power amount to the smart lock control device 140. A preset threshold is preset in the intelligent lock control device 140, and if the remaining power is higher than the preset threshold, all devices in the device group are identified as devices to be started; and if the residual electric quantity is smaller than the preset threshold value, determining the identification device group to be started corresponding to the residual electric quantity from the corresponding relation between the preset electric quantity and the identification device group to be started. The preset threshold is a threshold for judging whether all the identification devices can be started, the corresponding relationship between the preset electric quantity and the start identification device group is stored in the intelligent lock control device 140 in advance according to the working voltage of each identification device, different residual electric quantity ranges correspond to different identification device groups to be started, the preset threshold and the preset electric quantity can be set according to experience values, data obtained based on actual measurement can be used, as long as the electric quantity can be ensured to enable the corresponding identification device group to normally work, limitation is not performed in the embodiment of the application, and the user can perform self-defined setting. For example, when all the identification means include: when the remaining power is between the first power value and the second power value, the corresponding recognition device to be started includes: the device comprises a device 1, a device 2, a device 3, a device 4, a device 5 and a face recognition device; when the electric quantity information is between the second electric quantity value and the third electric quantity value, the corresponding identification device to be started comprises: equipment 2, equipment 3, equipment 4, equipment 5 and a face recognition device; when the electric quantity information is between the third electric quantity value and the fourth electric quantity value, the corresponding identification device to be started comprises: device 4, device 5, wherein the first electric quantity value > the second electric quantity value > the third electric quantity value > the fourth electric quantity value. Through the operation, the identification equipment which can be used under the electric quantity is only started under the certain electric quantity, so that the electric quantity loss is reduced, and the service time of the intelligent lock is prolonged.
It can be seen that, in the embodiment of the present application, the power information collecting device is configured to collect the remaining power of the power, send the remaining power to the intelligent lock control device 140, and determine the to-be-started identification device group corresponding to the remaining power when the remaining power is smaller than the preset threshold. The power supply information acquisition device and the intelligent lock control device 140 can ensure that under a certain electric quantity, only the identification equipment available under the electric quantity is started, so that the loss of the electric quantity is reduced, and the service time of the intelligent lock is prolonged.
Further, for the security that conveniently looks over the outdoor image and improve intelligent lock, in this application embodiment, intelligent lock system still includes:
and the communication device is connected with the cat eye plate 120 and the intelligent lock control device 140 and is used for sending the outdoor image and the door lock opening record information to a target user side.
For the embodiment of the present application, the communication device may acquire the image outside the door through the cat-eye plate 120, and acquire the door lock opening record information through the intelligent lock control device 140, where the door lock opening record information includes opening time, opening a door lock device, an opening object, and the like.
Therefore, in the embodiment of the present application, the connected communication device is used to send the image outside the door and the door lock opening record information to the target user side. The user can look over the image outdoors through the target user side, just can easily gain an insight to the thing that takes place outdoors in the room, can look over the lock at the customer end simultaneously and open the record information, has improved intelligent lock system's security.
Further, in order to improve the security of the intelligent lock, in the embodiment of the present application, the intelligent lock control device 140 is further configured to:
when the matching fails, acquiring the outdoor image acquired by the image acquisition device 110 in real time, and judging whether personnel in the outdoor image perform dangerous actions or not, or judging whether the personnel in the outdoor image are dangerous personnel or not based on a preset dangerous personnel library; if yes, alarm information is sent out.
For the present embodiments, the dangerous actions include, but are not limited to: lock picking action and peeping action. The preset dangerous personnel library comprises face information of high-risk groups, can come from the police station system and can also come from dangerous personnel information on a webpage, and safety early warning is realized by matching dangerous personnel.
Therefore, in the embodiment of the application, after the matching fails, whether dangerous actions are carried out by the personnel in the images and whether the dangerous personnel are dangerous personnel is judged based on the dangerous personnel library, if so, alarm information is sent out, and the safety of the intelligent lock is improved.
The above embodiments describe an intelligent door lock system from the perspective of an apparatus, and the following description describes a control method of an intelligent door lock from the perspective of a method flow, which is described in detail in the following embodiments.
The embodiment of the application provides a control method of an intelligent door lock, which is executed by electronic equipment, and as shown in fig. 4, the method includes step S201, step S202, step S203, step S204, and step S205, where:
step S201: image acquisition device gathers outdoor image to send outdoor image to cat eye board and face identification device, outdoor image includes: visible light images and infrared images;
step S202: the cat eye plate displays an image outside the door;
step S203: the face recognition device carries out face recognition on the visible light image and/or the infrared image to obtain a recognition result;
when the recognition result is that a human face is recognized, carrying out image reconstruction on a first human face image of the infrared image and a second human face image of the visible light image to generate a reconstructed image;
extracting the face features of the reconstructed image, matching the face features with the features in the pre-stored face feature set to obtain a matching result, and sending the matching result to the intelligent lock control device;
step S204: when the matching result is that the matching is successful, the intelligent lock control device generates a door lock unlocking instruction and sends the door lock unlocking instruction to the door lock control device;
step S205: the door lock control device opens the door lock according to the door lock opening instruction.
Therefore, in the embodiment of the application, the image acquisition device acquires the outdoor image and sends the outdoor image to the cat eye plate and the face recognition device, wherein the outdoor image comprises the visible light image and the infrared image, the cat eye plate displays the outdoor image, a user can conveniently check the outdoor situation, and the face recognition device performs face recognition on the visible light image and/or the infrared image to obtain a recognition result. And after the human face is identified, carrying out image reconstruction on the first human face image of the infrared image and the second human face image of the visible light image to generate a reconstructed image. And extracting the face features of the reconstructed image, matching the face features with the features in the pre-stored face feature set, sending the matching result to the intelligent lock control device, and when the matching result is successful, generating a door lock opening instruction by the intelligent lock control device and sending the door lock opening instruction to the door lock control device. Therefore, the image acquisition device is shared by the cat-eye plate and the face recognition device, so that the structural design is relatively simple, the cost is reduced, and the reliability of the system is improved.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the control method for the intelligent door lock described above may refer to the corresponding process in the embodiment of the foregoing apparatus, and is not described herein again.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of execution is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (10)
1. An intelligent door lock system, comprising:
image acquisition device for gather the outer image of door, and send the outer image of door to cat eye board and face identification device, the outer image of door includes: visible light images and infrared images;
the cat eye plate is used for displaying the image outside the door;
the face recognition device is used for carrying out face recognition on the visible light image and/or the infrared image to obtain a recognition result;
when the recognition result is that a human face is recognized, carrying out image reconstruction on a first human face image of the infrared image and a second human face image of the visible light image to generate a reconstructed image;
extracting the face features of the reconstructed image, matching the face features with features in a prestored face feature set to obtain a matching result, and sending the matching result to an intelligent lock control device;
the intelligent lock control device is used for generating a door lock opening instruction and sending the door lock opening instruction to the door lock control device after the matching result is that the matching is successful;
and the door lock control device is used for unlocking the door lock according to the door lock unlocking instruction.
2. The intelligent door lock system according to claim 1, wherein the face recognition device, when performing the extraction of the face features of the reconstructed image, is configured to:
judging whether the reconstructed image is a stereo image; and if so, extracting the face features of the reconstructed image.
3. The intelligent door lock system according to claim 1, wherein the face recognition device, when performing image reconstruction of the first face image of the infrared image and the second face image of the visible light image to generate reconstructed images, is configured to:
carrying out binocular correction on a first face image of the infrared image and a second face image of the visible light image by using epipolar constraint so as to enable feature points of the first face image and the second face image to be located on the epipolar lines;
matching the feature points of the corrected first face image and the corrected second face image to obtain a plurality of groups of matched feature points;
and carrying out image reconstruction according to the multiple groups of matched feature points to generate the reconstructed image.
4. The intelligent door lock system according to any one of claims 1 to 3, further comprising: a door opening and closing state detection device and a prompt device;
wherein, switch door state detection device for: when the door lock is opened, acquiring an image acquired by the image acquisition device; judging whether a target object exists in the image or not, and if not, determining that the door is in an open state; if the target object exists, determining the position of the target object, and matching the position of the target object with the position of a standard target object; when the matching fails, determining that the door is in an open state; sending the state of the door to the intelligent lock control device;
correspondingly, the intelligent lock control device is also used for: when the door is in an open state, a prompt instruction is sent to the prompt device.
5. The intelligent door lock system according to claim 4, further comprising:
at least one authentication device for collecting authentication information and authenticating the authentication information to obtain an authentication result and sending the authentication result to the intelligent lock control device;
correspondingly, the intelligent lock control device is also used for: and when the authentication result is that the authentication is successful, sending an opening instruction to the door lock control device.
6. The intelligent door lock system according to claim 5, further comprising:
the sensing device is used for acquiring sensing signals outside the door and sending the sensing signals to the intelligent lock control device, and the sensing signals indicate whether a target object tends to the intelligent door lock system;
correspondingly, intelligence lock control device still is used for: when the target object tends to the intelligent door lock system according to the sensing signal, controlling the intelligent lock control device to enter a working state, and simultaneously turning on the power switches of the authentication device and the face recognition device; and when the situation that no target object tends to the intelligent door lock system is determined according to the sensing signal, controlling the intelligent lock control device to enter a dormant state, and simultaneously turning off power switches of the authentication device and the face recognition device.
7. The intelligent door lock system according to claim 5, further comprising:
the power supply information acquisition device is used for acquiring the residual electric quantity of the power supply and sending the residual electric quantity to the intelligent lock control device;
correspondingly, the intelligent lock control device is also used for: and when the residual electric quantity is smaller than a preset threshold value, determining a to-be-started identification device group corresponding to the residual electric quantity from a corresponding relation between a preset electric quantity and a started identification device group, wherein the to-be-started identification device group comprises at least one identification device, and the identification device comprises an authentication device and the face identification device.
8. The intelligent door lock system according to claim 4, further comprising:
and the communication device is connected with the cat-eye plate and the intelligent lock control device and is used for sending the outdoor image and the door lock opening record information to the target user side.
9. The intelligent door lock system according to claim 1, wherein the intelligent lock control device is further configured to:
when the matching fails, acquiring an outdoor image acquired by the image acquisition device in real time, and judging whether personnel in the outdoor image perform dangerous actions or not, or judging whether the personnel in the outdoor image are dangerous personnel or not based on a preset dangerous personnel library; if yes, alarm information is sent out.
10. A control method of an intelligent door lock is characterized by comprising the following steps:
image acquisition device gathers outdoor image to send outdoor image to cat eye board and face identification device, outdoor image includes: visible light images and infrared images;
the cat eye plate displays the image outside the door;
the face recognition device carries out face recognition on the visible light image and/or the infrared image to obtain a recognition result; when the recognition result is that a human face is recognized, carrying out image reconstruction on a first human face image of the infrared image and a second human face image of the visible light image to generate a reconstructed image; extracting the face features of the reconstructed image, matching the face features with the features in the prestored face feature set to obtain a matching result, and sending the matching result to an intelligent lock control device;
the intelligent lock control device generates a door lock opening instruction and sends the door lock opening instruction to the door lock control device after the matching result is that the matching is successful;
and the door lock control device opens the door lock according to the door lock opening instruction.
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| CN202210870218.7A CN115131868A (en) | 2022-07-23 | 2022-07-23 | Intelligent door lock system and control method of intelligent door lock |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116156610A (en) * | 2023-04-20 | 2023-05-23 | 深圳市皇家金盾智能科技有限公司 | Bidirectional real-time video keep-alive method |
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| CN116156610A (en) * | 2023-04-20 | 2023-05-23 | 深圳市皇家金盾智能科技有限公司 | Bidirectional real-time video keep-alive method |
| CN116156610B (en) * | 2023-04-20 | 2023-08-08 | 深圳市皇家金盾智能科技有限公司 | Bidirectional real-time video keep-alive method |
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