CN112686148A - Face recognition system suitable for people with multiple heights - Google Patents
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Abstract
The invention relates to the technical field of image recognition, in particular to a face recognition system suitable for people with multiple heights, which comprises an acquisition module, an adjustment module, a control module, a gate module, a mobile trigger module and a processing module, wherein the acquisition module is used for acquiring a face image of a user and sending the face image to the control module, the control module is used for matching the face image with prestored face information, the control module is used for controlling the gate module to be opened when the control module is successfully matched, the mobile trigger module is used for acquiring a walking image within a preset range of the user, the processing module is used for judging whether the body shape of the user on the walking image is completely positioned on the walking image, the processing module is used for sending a reduction adjustment signal to the control module when the body shape of the user is completely positioned on the walking image, and the control module. The mobile triggering module and the processing module can be arranged independently of the related modules of the gate, so that the related modules of the gate do not need to be greatly improved or replaced, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of image recognition, in particular to a face recognition system suitable for people with various heights.
Background
Along with the improvement of the intelligent degree of home furnishing, more and more residential communities introduce the access control system based on face recognition. At present, an access control system based on face recognition generally fixes a camera device of face recognition at an access control position, so as to ensure a certain recognition range of the camera device. However, for people who enter the residential community, the height of individual people is high or low, the access control system cannot recognize faces, and the use is inconvenient.
To the problem of above-mentioned access control system face identification, patent publication No. CN206179043U discloses a face recognition system, and this system comprises server and a plurality of face recognition device who is connected with the server communication, and every face recognition device includes: tripod, electric rotary device and electronic pitch device etc. adopt above-mentioned technical scheme, because face identification camera installs in the backup pad, and the backup pad is under the cooperation of devices such as tripod, electric rotary device, electronic pitch device, its height of adjustment, direction and angle that can be convenient, therefore can satisfy different height users 'operation requirement, improved user's experience degree, make face identification device have use reliability height, operate comfortable characteristics.
When the system is used for face recognition, when a user is a child entering the access control, the child cannot trigger the system to recognize the face due to the short height, needs to update the existing access control system to be adapted to the face recognition of the child, and the improvement cost of the access control system is high.
Disclosure of Invention
The invention aims to provide a face recognition system suitable for people with various heights, and aims to solve the problem that children with shorter heights cannot trigger the existing access control system to perform face recognition.
The face recognition system suitable for people with multiple heights comprises an acquisition module, an adjustment module, a control module and a gate module, wherein the acquisition module is used for acquiring a face image of a user and sending the face image to the control module, the adjustment module drives the acquisition module to adjust the position, the control module matches the face image with prestored face information, and when the same face image and the same face information are matched, the control module controls the gate module to be opened for the user to pass through;
the mobile terminal is characterized by further comprising a mobile trigger module and a processing module, the distance between the mobile trigger module and the ground is half of the distance between the acquisition module and the ground, the mobile trigger module acquires walking images of a user in a preset height above the ground and a preset distance range, the processing module acquires the walking images, the processing module judges whether the body shape of the user is completely positioned on the walking images, the processing module sends a reduction adjusting signal to the control module when the body shape of the user is completely positioned on the walking images, and the control module controls the adjustment module to be started according to the reduction adjusting signal.
The beneficial effect of this scheme is:
when a user enters a community area, the adjusting module drives the acquisition module to adjust the position, the acquisition module acquires a face image and sends the face image to the control module for matching, and when the matching is successful, the control module controls the gate module to be opened for the user to enter; meanwhile, a mobile trigger module collects a walking image of a user in a preset range above the ground, namely the walking image of the lower half of the user, a processing module identifies the body shape of the user according to the walking image, namely judges the body shape of the lower half of the user on the walking image, judges whether the body shape of the user is completely positioned on the walking image, namely judges whether the user is a child, and when the body shape of the user is completely positioned on the walking image, the processing module sends a reduction adjustment signal to a control module to trigger the control module to control the adjustment module to start and adjust the position of the acquisition module so as to accurately acquire the face information of the user; and the mobile trigger module and the processing module can be set independently of the related modules of the gate, and can be directly attached to the existing gate without greatly improving or replacing the related modules of the gate, so that the use is more flexible and convenient, and the cost is reduced.
Further, the processing module compares the body shape top edge of the user body shape on the walking image with the top edge of the walking image, and when the body shape top edge is lower than the image top edge, the processing module judges that the user body shape is completely positioned on the walking image.
The beneficial effects are that: when a child user approaches the gate module, according to whether the body shape top edge of the child user on the walking image is lower than the top edge of the walking image or not, the body shape top edge does not contact the top edge of the walking image, so that whether the body shape of the user is completely located on the walking image or not is judged, the accuracy of child user identification is improved, and the position of the acquisition module is adjusted by triggering the adjustment module in time.
Further, when body shape top edge contact top border, processing module discerns the shank walking profile when the user walks from walking image, when shank walking profile is an independent bar post, processing module judges that the user's body shape is complete to be located walking image, when shank walking profile is two independent bar posts, processing module judges that the user's body shape is located outside the collection scope of removing trigger module, processing module sends lifting adjusting signal to control module, control module starts according to lifting adjusting signal control adjusting module.
The beneficial effects are that: for the people's face image acquisition of floodgate machine, the normal height that collection module predetermine can satisfy most user's demand, and the setting that removes trigger module can gather the body shape wholly to the shorter user of part height, can only gather the shank to the higher user of part height, so, when the top edge of user's body shape is located the top border of walking image, through the leg walking profile when discerning the walking, and judge that the walking profile is an independent bar post or two independent bar posts, thereby judge that the user's body shape is the shorter user of height or the higher user of body shape, improve the accuracy of adjusting collection module position.
Further, the mobile trigger module continuously collects a plurality of walking images, the processing module identifies the walking angle of the leg of the user from the plurality of walking images when the body shape of the user is completely positioned in the walking images, when the walking angle is smaller than a preset angle, the processing module determines that the walking profile of the leg on the walking image is an independent bar-shaped column, and the processing module sends a reduction adjusting signal to the control module.
The beneficial effects are that: because children's user's height is less, the leg is also short, the angle that the shank was opened when children's user walked is smaller, so, through many walking images, be convenient for gather the walking angle of the shank when user walked, the angle that two legs opened when walking promptly, then judge the size of walking angle, it is an independent bar post to judge shank walking profile when walking angle is less, send to control module and reduce adjustment signal, let acquisition module's position reduce, improve the accuracy of judging children's user, and in time trigger and carry out face identification.
Further, the processing module identifies the shape of the user at the same position on the multiple walking images as the user, wherein the same position is the position obtained by adding a preset deviation to the coordinates of the pixel points on the walking images.
The beneficial effects are that: the shapes of users at the same position on the multiple walking images are taken as one user for identification, and the accuracy of judgment is improved.
Further, still include infrared imaging module, when shank walking profile is an independent bar post, processing module acquires and sends imaging signal to infrared imaging module, infrared imaging module is according to the infrared image formation of image signal to the user walking, processing module acquires infrared image and discerns infrared walking profile and judges, and when infrared walking profile top contact top border and infrared walking profile are two independent bar posts, processing module changes into the user shape on being located the walking image with user shape and is located the collection scope that removes trigger module.
The beneficial effects are that: due to the clothing influence of the user, for example, when an adult user wears a long coat or a long skirt, the leg walking profile is easily judged to be an independent bar-shaped column due to misleading of clothing wrapping, and the walking angle of the user is not easy to accurately acquire, so when the leg walking profile is identified to be the independent bar-shaped column, infrared imaging is carried out, the walking profile is judged again, namely the infrared walking profile on the infrared image is judged, so that two independent bar-shaped columns on the walking image are accurately identified, and the interference of the clothing on whether the body shape of the user is completely positioned on the walking image is reduced; not everyone carries out infrared imaging and judges walking profile again, saves judgement procedure.
Further, the control module sends a counting signal to the processing module when the same face image and face information are matched, the processing module counts the number of passing people within a preset time according to the counting signal to obtain a counting value, and the processing module acquires a walking image when the counting value is smaller than a preset threshold value.
The beneficial effects are that: because when the user that gets into the community through the floodgate machine is more, even there is children to get into, children can follow and get into behind adult, for example when children follow guardian and get into, judge through the count and get into how much of user, and only when getting into that the user is less and children can only oneself enter into the community district, just acquire the walking image and discern the judgement, need not separately discernment children and then open the floodgate machine module, reduce the system and be in the operation throughput of the stream of people peak period who gets into the community, facilitate the use.
Drawings
FIG. 1 is a schematic block diagram of a first embodiment of a face recognition system suitable for people of various heights according to the present invention.
Detailed Description
The following is a more detailed description of the present invention by way of specific embodiments.
Example one
A face recognition system suitable for people of various heights, as shown in fig. 1: the system comprises an acquisition module, an adjustment module, a control module, a gate module, a mobile trigger module and a processing module; the acquisition module can use the existing camera, the acquisition module is in signal connection with the control module, the adjustment module can use the existing hydraulic cylinder for height adjustment, the adjustment module is in signal connection with the control module, the gate module can use the existing gate equipment of the entrance guard, the gate module is in signal connection with the control module, and the control module can use the existing gate controller; the control module can be connected with the processing module through signals in a wired communication or wireless communication mode, the processing module can use an existing Haisi SOC chip, the mobile trigger module can use an existing high-definition camera, the mobile trigger module can be fixed to the entrance and exit of the gate module through a gasket and a screw, and the mobile trigger module is located below the acquisition module.
The control module is used for controlling the gate module to open for the user to pass through; the control module sends a counting signal to the processing module when matching the face image and the face information, namely, counting is carried out by one user through the gate module, the processing module counts the number of passing people in preset time according to the counting signal to obtain a counting value, the preset time can be set according to the peak time of people flow entering the community, fifteen minutes can be set if the preset time is longer, the processing module acquires a walking image when the counting value is smaller than a preset threshold value, the preset threshold value can be set according to the requirement of each community, for example, the preset threshold value can be set to five.
The distance between the mobile trigger module and the ground is half of the height between the acquisition module and the ground when the mobile trigger module is installed, namely the height of the mobile trigger module is smaller than the height of the acquisition module, the mobile trigger module acquires a walking image of a user at a preset height above the ground and within a preset distance range, the preset height and the preset distance are set according to a visual angle range after the high-definition camera is installed, the processing module acquires the walking image and identifies the body shape of the user, the processing module extracts a contour as the body shape of the user by using an image gradient algorithm after carrying out gray scale processing on the image, and the processing module judges whether the body shape of the user is completely positioned on the walking image or not. The top edge is the edge of the walking image, and when the body shape top edge is positioned below the top edge, the processing module judges that the body shape of the user is completely positioned on the walking image.
The processing module sends a reduction adjustment signal to the control module when the body shape of the user is completely positioned on the walking image, the control module controls the adjustment module to be started according to the reduction adjustment signal, and the adjustment module is started to drive the acquisition module to adjust the position in a reduction mode.
When body shape top edge contact top border, body shape top edge reaches the position at top border promptly, processing module discerns the shank profile of walking when the user walks from the walking image, shank profile of walking is the more specific profile of user's body shape, when shank profile of walking is an independent bar post, processing module judges that user's body shape is complete to be located the walking image, when shank profile of walking is two independent bar posts, processing module judges that user's body shape is located outside the collection scope of removing trigger module, when the user can only shoot two legs, processing module sends the lifting accommodate signal to control module, control module adjusts the signal control regulation module according to the lifting and starts, it rises to drive collection module by regulation module.
The mobile trigger module continuously collects a plurality of walking images, the processing module identifies the walking angle of the leg of the same user from the plurality of walking images when the user is completely positioned in the walking images, the walking angle is the included angle of two legs during walking, when the walking angle is smaller than a preset angle, the preset angle can be set according to the actual condition of a child user, the child user can set according to the actual condition, for example, the child user can be younger than five years old, for example, the preset angle is set to be 20 degrees, the processing module confirms that the walking profile of the leg on the walking image is an independent bar-shaped column, and the processing module sends a reduction adjustment signal to the control module; the processing module takes the shapes of users at the same position on the multiple walking images as a user to identify, and the same position is the position of the pixel point coordinate plus the preset deviation on the walking image.
The specific implementation process is as follows:
when the intelligent walking image acquisition device is used, the human face image is acquired through the acquisition module, then the human face image is matched with face information through the control module, the gate module is opened for passing when the matching is successful, meanwhile, the control module sends a counting signal to the processing module, and a plurality of walking images are continuously acquired through the mobile trigger module, the walking images are images when a user walks at a preset height above the ground and within a preset distance range, the shape of the user at the same position on the plurality of walking images is identified as a user through the processing module, the processing module is also enabled to count within a preset time length to obtain a counting value, and when the counting value is smaller than a preset threshold value, the processing module acquires the walking images from the mobile trigger module.
Identifying the body shape of the user from the walking image by the processing module, comparing the top edge of the body shape of the user on the walking image with the top edge of the walking image by the processing module to judge whether the body shape of the user is completely positioned on the walking image, and judging that the body shape of the user is completely positioned on the walking image by the processing module when the top edge of the body shape is positioned below the top edge; when the body shape of the user is completely positioned on the walking image, the processing module sends a reduction adjusting signal to the control module, and the control module controls the adjusting module to drive the acquisition module to descend to acquire the face image of the child user; when the top edge of the body shape contacts the top edge, the processing module judges that the body shape of the user is not completely positioned on the walking image, at the moment, the processing module identifies the leg walking outline when the user walks from the walking image, when the leg walking outline is an independent bar-shaped column, the processing module judges that the body shape of the user is completely positioned on the walking image, the processing module sends a reduction adjusting signal, when the leg walking outline is two independent bar-shaped columns, namely only two legs of an owner are shot, the processing module judges that the body shape of the user is positioned outside the collection range of the mobile trigger module, the processing module sends a lifting adjusting signal to the control module, the control module controls the adjusting module to start according to the lifting adjusting signal, the adjusting module drives the collection module to ascend, and the processing module identifies the walking angle of the leg of the same user from a plurality of walking images when the body shape of the user is completely positioned on the walking image, and when the walking angle is smaller than the preset angle, the walking profile is judged to be an independent bar-shaped column, namely, the target is judged to be a child user with a shorter height.
The children user who lets the height shorter also can the exclusive use face identification system pass through the floodgate machine module, lets the shorter user of height also can use, and the user scope that the increase can be used, the multiple judgement mode reduces the erroneous judgement, lets the action of adjusting the collection module height more accurate.
Example two
The difference with the first embodiment lies in that, still include infrared imaging module, when shank walking profile is an independent bar post, processing module acquires and sends imaging signal to infrared imaging module, infrared imaging module is according to imaging signal to the infrared image formation of image of user's walking, processing module acquires infrared image and discerns infrared walking profile and judges, when infrared walking profile top contact top border and infrared walking profile are two independent bar posts, processing module changes user's shape completely to be located on the walking image and becomes that user's shape is located outside the collection range that removes trigger module.
When the leg walking outline is recognized to be an independent bar-shaped column, infrared imaging is carried out, the walking outline is judged again, namely the infrared walking outline on the infrared image is judged, so that the two independent bar-shaped columns on the walking image are accurately recognized, and the interference of clothing on whether the body shape of the user is completely positioned on the walking image is reduced; not everyone carries out infrared imaging and judges walking profile again, saves judgement procedure.
EXAMPLE III
The difference from the first embodiment is that the processing module calculates a height value of the central angle from the ground when the walking angle is smaller than a preset angle, for example, by setting coordinate axes on a walking image, a first point coordinate of the central angle of the walking angle and a second point coordinate of a perpendicular point of the walking angle on the ground are obtained, a height value is calculated according to the first point coordinate and the second point coordinate, the processing module compares the height value with a height threshold value, and when the height value is smaller than the height threshold value, the processing module judges that the walking profile is an independent bar-shaped column, where "one" refers to "one" in number, that is, the target is judged to be a child user with a shorter height.
Because the walking angles of the people with different heights are possibly the same, when the walking angle is obtained, the height value of the central angle of the walking angle and the height value of the ground is judged, and whether the walking angle is an independent bar-shaped column is judged according to the height value, so that the children with shorter heights can be accurately judged, the situation that the acquisition module cannot acquire corresponding face information due to the fact that the heights of the users are judged by mistake is reduced, and the speed of the users entering a cell in a face recognition mode is increased.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. Be suitable for multiple height crowd's face identification system, including collection module, adjusting module, control module and floodgate machine module, collection module is used for gathering user's face image and sends to control module, adjusting module drives collection module adjusting position, control module matches face image and the face information of prestoring, when matching same face image and face information, control module control floodgate machine module is opened and is supplied the user to pass through its characterized in that:
the mobile terminal is characterized by further comprising a mobile trigger module and a processing module, the distance between the mobile trigger module and the ground is half of the distance between the acquisition module and the ground, the mobile trigger module acquires walking images of a user in a preset height above the ground and a preset distance range, the processing module acquires the walking images, the processing module judges whether the body shape of the user is completely positioned on the walking images, the processing module sends a reduction adjusting signal to the control module when the body shape of the user is completely positioned on the walking images, and the control module controls the adjustment module to be started according to the reduction adjusting signal.
2. The face recognition system of claim 1, wherein: the processing module compares the body shape top edge of the user body shape on the walking image with the top edge of the walking image, and when the body shape top edge is lower than the image top edge, the processing module judges that the user body shape is completely positioned on the walking image.
3. A face recognition system for people of multiple heights according to claim 2, wherein: when body shape top edge contact top border, the shank walking profile when processing module discernment user walked from the walking image, when shank walking profile is an independent bar post, processing module judges that user's body shape is complete to be located the walking image, when shank walking profile is two independent bar posts, processing module judges that user's body shape is located outside the collection scope of removing trigger module, processing module sends lifting adjusting signal to control module, control module adjusts signal control adjusting module according to the lifting and starts.
4. A face recognition system for people of multiple heights according to claim 3, wherein: the mobile trigger module continuously collects a plurality of walking images, the processing module identifies the walking angle of the leg of the user from the plurality of walking images when the body shape of the user is completely positioned in the walking images, when the walking angle is smaller than a preset angle, the processing module determines that the walking profile of the leg on the walking image is an independent bar-shaped column, and the processing module sends a reduction adjusting signal to the control module.
5. The face recognition system of claim 4, wherein: the processing module identifies the shapes of users at the same position on the multiple walking images as one user, wherein the same position is the position obtained by adding a preset deviation to the coordinates of pixel points on the walking images.
6. The face recognition system of claim 4, wherein: still include infrared imaging module, when shank walking profile is an independent bar post, processing module acquires and sends imaging signal to infrared imaging module, infrared imaging module is according to the infrared image formation of image signal to the user walking, processing module acquires infrared image and discerns infrared walking profile and judges, when infrared walking profile top contact top border and infrared walking profile are two independent bar posts, processing module changes into the user shape on being located the walking image with user shape is complete and is located the collection scope that removes trigger module.
7. A face recognition system for people of multiple heights according to any of claims 1-6, wherein: the control module sends a counting signal to the processing module when the same face image and face information are matched, the processing module counts the number of passing people within a preset time length according to the counting signal to obtain a counting value, and the processing module acquires a walking image when the counting value is smaller than a preset threshold value.
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