CN111854962A - Thermal imaging human body temperature measurement method, device and system and electronic equipment - Google Patents
Thermal imaging human body temperature measurement method, device and system and electronic equipment Download PDFInfo
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Abstract
The application relates to a thermal imaging human body temperature measurement method, a device, a system, electronic equipment and a computer readable storage medium, wherein the thermal imaging human body temperature measurement method comprises the following steps: compared with the prior art, the thermal imaging human body temperature measurement method provided by the embodiment of the application positions the head area of the target human body from the thermal imaging image by acquiring the thermal imaging image of the target human body according to the preset head identification algorithm, determines the temperature of the head area according to the thermal imaging image, and indicates the temperature of the target human body by the temperature of the head area.
Description
Technical Field
The present application relates to the field of infrared thermal imaging, and in particular, to a method, an apparatus, a system, an electronic device, and a computer-readable storage medium for human body temperature measurement in thermal imaging.
Background
Infrared thermal imaging is a detection device that detects infrared energy (heat) through non-contact, converts the infrared energy into an electrical signal, generates a thermal image and a temperature value on a display, and can calculate the temperature value. The infrared thermal imaging temperature measurement is to detect the human body temperature in a non-contact way, so that whether the abnormal body temperature phenomenon exists in a person can be simply, safely, visually and accurately searched and judged, and measures are rapidly taken to prevent the flow of the person who generates heat.
In the related art, the infrared thermal imaging temperature measurement system comprises a front-end human body temperature measurement system and a rear-end video storage server, and the front-end human body temperature measurement system comprises a human body temperature measurement thermal imager for measuring the temperature of personnel at a station or an entrance and an exit. In the working process of the thermal body temperature measurement thermal imager, people at a station or at an entrance and an exit need to be detected firstly, then the thermal body temperature measurement thermal imager is positioned to a specific target human body, and then the temperature of the target human body is indicated by measuring the body surface temperature of the exposed skin of the target human body. The accuracy of the target body temperature obtained in this way is low due to the difference in temperature of different body regions of the target body.
At present, no effective solution is provided for the problem of low temperature accuracy of a target human body indicated by measuring the body surface temperature of the exposed skin of the target human body in the related art.
Disclosure of Invention
The embodiment of the application provides a thermal imaging human body temperature measurement method, a device, a system, electronic equipment and a computer readable storage medium, which are used for at least solving the problem that the accuracy of the temperature of a target human body is low by measuring the body surface temperature of the exposed skin of the target human body in the related art.
In a first aspect, an embodiment of the present application provides a method for measuring a temperature of a human body by thermal imaging, where the method includes:
Acquiring a thermal imaging image of a target human body;
according to a preset head recognition algorithm, a head region of the target human body is located from the thermal imaging image, the temperature of the head region is determined according to the thermal imaging image, and the temperature of the head region indicates the temperature of the target human body.
In some of these embodiments, prior to said determining the temperature of the head region from the thermographic image, the method further comprises:
identifying whether the head area of the target human body in the thermal imaging image is a front face or not according to a preset human face identification algorithm,
and under the condition that the head area of the target human body is the front face, determining the temperature of the head area according to the thermal imaging image.
In some of these embodiments, said determining the temperature of said head region from said thermographic image comprises:
and positioning a forehead area of the head area of the target human body according to a preset forehead area positioning algorithm, and determining the temperature of the head area according to the temperature of the forehead area.
In some embodiments, the thermal imaging is acquired by the thermal imaging camera, and before acquiring the thermal imaging image of the target human body, the method further comprises:
Acquiring the position information of the target human body,
judging whether the target human body is positioned in the effective area of the thermal imaging camera according to the position information of the target human body,
and under the condition that the target human body is positioned in the effective area, acquiring a thermal imaging image of the target human body shot by the thermal imaging camera.
In some embodiments, the determining whether the target human body is located in the effective area of the thermal imaging camera includes:
an infrared device is adopted to obtain the target distance between the target human body and the thermal imaging camera,
and judging whether the target distance is within a preset threshold range so as to determine whether the target human body is positioned in an effective area of the thermal imaging camera.
In some of these embodiments, said determining the temperature of said head region from said thermographic image comprises:
giving the target human body identification mark;
acquiring continuous multi-frame thermal imaging images of the target human body according to the identification mark,
and calculating the average temperature of the head region in the continuous multi-frame thermal imaging images, wherein the average temperature is the temperature of the target human body.
In some of these embodiments, after determining the temperature of the head region from the thermographic image, the temperature of the head region being indicative of the temperature of the target human, the method further comprises:
Judging whether the temperature of the target human body is higher than a preset threshold value,
and sending an alarm signal to the alarm device under the condition that the temperature of the target human body is higher than the preset threshold value, wherein the alarm device responds to the alarm signal to automatically alarm.
In a second aspect, an embodiment of the present application provides a method for measuring human body temperature through thermal imaging, where the method includes:
acquiring a visible light image and a thermal imaging image of a target human body;
locating a head region of the target human body from the visible light image,
determining a head region of the target human body in the thermal imaging image according to the head region in the visible light image, and determining a temperature of the head region according to the thermal imaging image, wherein the temperature of the head region indicates the temperature of the target human body.
In some of these embodiments, the method further comprises:
acquiring continuous multi-frame visible light images of the target human body,
and generating the moving track of the target human body through the continuous multi-frame visible light images according to a preset track tracking algorithm.
In a third aspect, an embodiment of the present application provides a human body temperature measurement device for thermal imaging, where the device includes: the device comprises an acquisition module and a processing module;
The acquisition module is used for acquiring a thermal imaging image of a target human body;
the processing module is used for positioning a head area of the target human body from the thermal imaging image according to a preset head recognition algorithm, and determining the temperature of the head area according to the thermal imaging image, wherein the temperature of the head area indicates the temperature of the target human body;
the obtaining module and the processing module are further configured to implement the thermal imaging human body thermometry method according to the first aspect.
In a fourth aspect, an embodiment of the present application provides a human body temperature measurement device for thermal imaging, where the device includes: the device comprises an acquisition module and a processing module;
the acquisition module is used for acquiring a visible light image and a thermal imaging image of a target human body;
the processing module is configured to locate a head region of the target human body from the visible light image, determine the head region of the target human body in the thermal imaging image according to the head region in the visible light image, and determine a temperature of the head region according to the thermal imaging image, where the temperature of the head region indicates the temperature of the target human body;
the acquisition module and the processing module are further used for realizing the thermal imaging human body temperature measurement method according to the second aspect.
In a fifth aspect, an embodiment of the present application provides a thermal imaging human body temperature measurement system, where the system includes a thermal imaging camera and a central processing unit;
acquiring a thermal imaging image of a target human body through the thermal imaging camera,
the central processing unit, when executed, is configured to implement the method for thermographic human body thermometry as described in the first aspect above.
In a sixth aspect, an embodiment of the present application provides a thermal imaging human body temperature measurement system, where the system includes a thermal imaging camera, a visible light camera, and a central processing unit;
acquiring a thermal imaging image of a target human body through the thermal imaging camera, and acquiring a visible light image of the target human body through the visible light camera;
the central processing unit is further used for realizing the thermal imaging human body temperature measurement method according to the second aspect when being executed.
Compared with the prior art, the thermal imaging human body temperature measurement method provided by the embodiment of the application has the advantages that the thermal imaging image of the target human body is obtained, the head area of the target human body is positioned from the thermal imaging image according to the preset head identification algorithm, the temperature of the head area is determined according to the thermal imaging image, the temperature of the head area indicates the temperature of the target human body, the problem that the accuracy of the temperature of the target human body is low due to the fact that the body surface temperature of the exposed skin of the target human body is measured to indicate the temperature of the target human body is solved, and the accuracy of human body temperature measurement is.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram of an application environment of a method for thermal imaging human body thermometry according to an embodiment of the present application;
FIG. 2 is a first flowchart of a method for thermal imaging human body thermometry according to an embodiment of the present application;
FIG. 3 is a second flowchart of a method for thermal imaging body thermometry according to an embodiment of the present application;
FIG. 4 is a flowchart III of a method of thermal imaging body thermometry according to an embodiment of the present application;
FIG. 5 is a flow chart of a thermal imaging image determining head region temperature according to an embodiment of the present application;
FIG. 6 is a fourth flowchart of a method of thermal imaging body thermometry according to an embodiment of the present application;
FIG. 7 is a first flowchart of another method for thermal imaging human body thermometry according to an embodiment of the present application;
FIG. 8 is a flowchart II of another method for thermal imaging body thermometry according to an embodiment of the present application;
FIG. 9 is a block diagram of an apparatus for thermal imaging human body thermometry according to an embodiment of the present application;
FIG. 10 is another block diagram of an apparatus for thermal imaging human body thermometry according to an embodiment of the present application;
FIG. 11 is a block diagram of another apparatus for thermal imaging human body thermometry according to an embodiment of the present application;
FIG. 12 is a block diagram II of another apparatus for thermal imaging human body thermometry according to an embodiment of the present application;
FIG. 13 is a block diagram of a system for thermal imaging human body thermometry according to an embodiment of the present application;
FIG. 14 is another block diagram of a system for thermal imaging human body thermometry according to an embodiment of the present application;
FIG. 15 is a block diagram of another system for thermal imaging human body thermometry according to an embodiment of the present application;
FIG. 16 is a block diagram of another system for thermal imaging human body thermometry according to an embodiment of the present application;
fig. 17 is an internal structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as referred to herein means two or more.
The method for measuring temperature of a thermal imaging human body provided by the present application can be applied to an application environment shown in fig. 1, fig. 1 is a schematic view of an application environment of the method for measuring temperature of a thermal imaging human body according to an embodiment of the present application, as shown in fig. 1, a camera 102 with a thermal imaging function is in communication connection with a server 104, the camera 102 obtains a thermal imaging image of a target human body 106 in a public place, the server 104 obtains the thermal imaging image of the target human body through the camera 102, and locates a head region of the target human body from the thermal imaging image through a preset head recognition algorithm, the server 104 determines a temperature of the head region of the target human body according to the thermal imaging image, the temperature of the head region indicates the temperature of the target human body, the server 104 can be implemented by an independent server or a server cluster composed of a plurality of servers, it is required to be described that, the server 104 may be integrated with the camera 102, and the camera 102 may have a function of acquiring a thermal imaging image and a visible light image of a target person in a public place.
The present embodiment provides a method for measuring human body temperature by thermal imaging, fig. 2 is a first flowchart of the method for measuring human body temperature by thermal imaging according to the embodiment of the present application, and as shown in fig. 2, the method includes the following steps:
step S201, a thermal imaging image of the target human body is acquired. The thermal imaging image of the target human body can be obtained through a camera device with a thermal imaging camera shooting function, and can also be obtained through an infrared thermal imager or an infrared temperature measuring probe.
Step S202, positioning a head region of the target human body from the thermal imaging image according to a preset head recognition algorithm.
The head region of the target human body is located from the thermal imaging image according to a preset head recognition algorithm, wherein the located head region includes a center point of the head region and a width and a height of the head region, and the preset head recognition algorithm includes, but is not limited to, R-CNN, SSD, YOLOv1, YOLOv2, YOLOv3 algorithm.
Step S203, determining a temperature of the head region from the thermographic image, the temperature of the head region indicating a temperature of the target human body.
The principle of detecting the temperature of the forehead area of the human body by using the thermal imaging image is as follows: the infrared thermal imaging images an object through a thermal infrared sensitive Charge Coupled Device (CCD) so as to reflect the temperature field on the surface of the object, and the human body is a natural biological infrared radiation source and can continuously emit and absorb infrared radiation to the surroundings, and the temperature distribution of the normal human body has certain stability and characteristics. Under the condition that a certain part of a human body is diseased or has changed functions, the blood flow at the part can be correspondingly changed, so that the local temperature of the human body is changed and is expressed as higher or lower temperature. According to the principle, the infrared radiation of the human body is collected through a thermal imaging system and converted into digital signals to form a pseudo color thermal image, and the temperature of the corresponding position of the human body can be obtained by utilizing special analysis software.
Through the steps S201 to S203, a preset head recognition algorithm is called from the acquired thermal imaging image of the target human body, the head region of the target human body including the center point of the head region and the width and height of the head region is located, then the temperature of the head region of the target human body is obtained through the thermal imaging image, and the temperature of the head region of the target human body is used as the temperature of the target human body. Because the temperatures of different body areas of the human body are different, the temperature of the head area of the human body indicates the temperature of the human body, and the body surface temperature of the naked skin of the human body, which is the target of measurement, indicates the temperature of the human body, so that the error is reduced, and the accuracy of the measurement of the temperature of the human body is improved.
In some embodiments, fig. 3 is a flowchart illustrating a method for thermographic thermometry of a human body according to an embodiment of the present application, prior to determining a temperature of a head region from a thermographic image, as shown in fig. 3. The method also includes the steps of:
step S301, identifying whether the head area of the target human body in the thermal imaging image is a front face according to a preset human face identification algorithm, and determining the temperature of the head area according to the thermal imaging image under the condition that the head area of the target human body is the front face.
And after the head area of the target human body is positioned from the thermal imaging image, calling a human face discrimination algorithm model to judge whether the head area of the identified human body is a front face. The face discrimination algorithm model can adopt methods such as image classification, logistic regression and the like.
When the head area of the target human body is judged to be the front face currently, the temperature of the head area is determined according to the thermal imaging image; if the head area of the target human body is not the front face (side face or reverse face) at present, because the head area is shielded by the hair at this time, the measured temperature of the head area is inaccurate, and therefore when the head area of the target human body is judged to be the front face, the temperature of the head area is determined according to the thermal imaging image.
Through the step S301, based on the face discrimination algorithm model, the target human body whose head region is not a front face is deleted, and when the head region of the target human body is a front face, the temperature of the head region is determined according to the thermal imaging image, so that the problem that the measured head region temperature is not accurate due to the fact that the head region is a side face or the head region is blocked by hair when facing the thermal imaging camera in a reverse direction is avoided.
In some of these embodiments, a method of determining a temperature of a head region from a thermographic image comprises: according to a preset forehead area positioning algorithm, a forehead area of a head area of a target human body is positioned, and the temperature of the head area is determined according to the temperature of the forehead area.
Calling a forehead region positioning algorithm to position a forehead region of the head region, determining the temperature of the forehead region through a thermal imaging image, wherein the temperature of the forehead region is used for indicating the temperature of the head region, and avoiding the problem that the thermal imaging image determines the temperature of other parts (outside the forehead region) of the face and the like of the head region to indicate the temperature of a target human body; therefore, the forehead area of the head area is positioned, the temperature of the forehead area is determined through the thermal imaging image to indicate the temperature of the target human body, and the accuracy of human body temperature measurement is improved.
In some of these embodiments, as shown in fig. 3, the method of determining a temperature of a head region from a thermographic image further comprises:
step S302, when the head area of the target human body is judged to be the front face, the forehead area of the head area of the target human body is positioned according to a preset forehead area positioning algorithm, and the temperature of the head area is determined according to the temperature of the forehead area.
And on the basis that the head area of the target human body is the front face, calling a forehead area positioning algorithm to position the forehead area of the head area, determining the temperature of the forehead area through a thermal imaging image, wherein the temperature of the forehead area is used for indicating the temperature of the head area and the temperature of the target human body, and the accuracy of measuring the temperature of the target human body is improved.
In some embodiments, fig. 4 is a flowchart three of a method for measuring temperature of a thermal imaging human body according to an embodiment of the present application, and as shown in fig. 4, before a thermal imaging image is acquired by a thermal imaging camera, the method further includes the following steps:
step S401, acquiring position information of a target human body; it should be noted that the position sensor may be used to acquire the position information of the target human body.
Step S402, judging whether the target human body is positioned in the effective area of the thermal imaging camera according to the position information of the target human body, and acquiring a thermal imaging image of the target human body shot by the thermal imaging camera under the condition that the target human body is positioned in the effective area.
It should be noted that the active area of the thermal imaging camera may be a relatively precise area where the thermal imaging image determines the temperature of the target human body.
Before the thermal imaging image of the target human body is acquired, whether the target human body is located in the effective area of the thermal imaging camera is judged, and when the effective area of the thermal imaging camera is the relatively accurate area of the thermal imaging image for determining the temperature of the target human body, the target human body in the effective area is screened out by judging whether the target human body is located in the effective area of the thermal imaging camera, and the temperature of the target human body is determined through the thermal imaging image, so that the temperature measuring accuracy of the thermal imaging image is improved.
In some embodiments, the method for determining whether the target human body is located in the effective area of the thermal imaging camera comprises: and acquiring a target distance from the target human body to the thermal imaging camera by adopting an infrared device, and judging whether the target distance is within a preset threshold range so as to determine whether the target human body is positioned in an effective area of the thermal imaging camera.
Here, an infrared ranging sensor may be installed at the thermal imaging camera, and whether the target human body is located in an effective area of the thermal imaging camera may be determined by measuring a distance from the target human body to the thermal imaging camera. For example, the effective area of the thermal imaging camera may be an effective area within 5m from the thermal imaging camera, and then it may be determined whether the target human body is in the effective area of the thermal imaging camera by knowing whether the distance from the target human body to the thermal imaging camera is within 5 m.
In some embodiments, fig. 5 is a flowchart of determining a head region temperature according to a thermal imaging image of an embodiment of the present application, and as shown in fig. 5, a method of determining a head region temperature according to a thermal imaging image includes:
step S501, giving a target human body identification mark;
the target human body in the thermal imaging image corresponds to an identification mark, and the identification mark can be a number or an alphabetical code.
Step S502, acquiring continuous multi-frame thermal imaging images of a target human body according to the identification mark;
the continuous multi-frame thermal imaging images with the same number or letter codes are found from the thermal imaging images, so that the continuous multi-frame thermal imaging images of the target human body can be found from the thermal imaging images, and the continuous multi-frame thermal imaging images are at least two frames.
Step S503, calculating the average temperature of the head area in the continuous multi-frame thermal imaging image, wherein the average temperature is the temperature of the target human body;
it should be noted that the temperature of the head region in each frame of the thermal imaging image may be the maximum temperature of the forehead region. For example, temperature values of four different positions in the forehead area are acquired in one frame of thermal imaging image, and the maximum temperature values at the four different positions are taken as the temperature of the forehead area in the frame of thermal imaging image. And then averaging the forehead area temperature of the continuous multi-frame thermal imaging images, wherein the average value is the temperature of the target human body.
Step S501 to step S503, the average temperature of the head region in the continuous multi-frame thermal imaging image is calculated to prevent misleading of the target human body temperature due to overhigh temperature of one frame, and the reliability of human body temperature measurement is improved.
In some embodiments, fig. 6 is a flowchart illustrating a fourth method for thermal imaging human body thermometry according to an embodiment of the present application, as shown in fig. 6, after determining a temperature of a head region from a thermal imaging image, the temperature of the head region indicating a temperature of a target human body, the method further includes the following steps:
step S601, judging whether the temperature of the target human body is higher than a preset threshold value;
because the temperature of the same part of the target human body has a certain difference value in the morning and the evening, the preset threshold value is changed and supplemented according to the use environment in the use process.
And step S602, sending an alarm signal to the alarm device under the condition that the temperature of the target human body is higher than a preset threshold value, and automatically giving an alarm by the alarm device in response to the alarm signal.
And step S601 and step S602, when the temperature of the target human body is higher than a preset threshold value, an alarm is automatically given, and the problem that a worker overlooks is avoided.
This embodiment provides a method for human body temperature measurement by thermal imaging, fig. 7 is a first flowchart of another method for human body temperature measurement by thermal imaging according to an embodiment of the present application, and as shown in fig. 7, the method includes the following steps:
step S701, acquiring a visible light image and a thermal imaging image of a target human body;
The thermal imaging image of the target human body can be obtained through a camera device with a thermal imaging camera shooting function, and also can be obtained through an infrared thermal imager or an infrared temperature measuring probe, and the thermal imaging image and the visible light image are required to be scaled to be of the same size.
Step S702, positioning a head area of a target human body from a visible light image;
the visible light image contains more information of the target human body, for example, each part of the target human body in the light image can be displayed more clearly than that in the thermal imaging image, and at the moment, the head region of the target human body can be simply and accurately positioned from the visible light image.
Step S703, determining the head region of the target human body in the thermal imaging image according to the head region in the visible light image;
the thermal imaging image can be correspondingly determined from the thermal imaging head portrait according to the head region in the visible light image, and optionally, the head region of the target human body can be simultaneously located from the thermal imaging image and the visible light image according to a preset head recognition algorithm, where the located head region includes a center point of the head region and a width and a height of the head region, and the preset head recognition algorithm includes, but is not limited to, R-CNN, SSD, YOLOv1, YOLOv2, and YOLOv3 algorithm.
Step S704, determining a temperature of the head region from the thermographic image, the temperature of the head region indicating a temperature of the target human body.
Through the above steps S701 to S704, the head region of the target human body is located from the obtained visible light image of the target human body, then the head region of the target human body in the thermal imaging image is determined according to the head region in the visible light image, then the temperature of the head region of the target human body is obtained through the thermal imaging image, and the temperature of the head region of the target human body is taken as the temperature of the target human body. Because the temperatures of different body areas of the human body are different, the temperature of the head area of the human body indicates the temperature of the human body, and the body surface temperature of the naked skin of the human body, which is the target of measurement, indicates the temperature of the human body, so that the error is reduced, and the accuracy of the measurement of the temperature of the human body is improved.
In some embodiments, fig. 8 is a flowchart illustrating another method for thermal imaging human body thermometry according to an embodiment of the present application, and as shown in fig. 8, the method for thermal imaging human body thermometry further includes the following steps:
step S801, acquiring continuous multiframe visible light images of a target human body,
optionally, the continuous multi-frame visible light images of the target human body may be obtained through body feature information of the target human body, for example, the facial features of each head region are different, and the continuous multi-frame visible light images of the target human body conforming to the facial features may be obtained from the visible light images through the facial features. Or a target human body number or letter code can be given to the visible light image, and then continuous multiframe visible light images with the same number or letter code are found from the visible light image, wherein the continuous multiframe thermal imaging images are at least two frames.
And S802, generating a moving track of the target human body through continuous multi-frame visible light images according to a preset track tracking algorithm.
The trajectory tracking algorithm includes, but is not limited to, KCF tracking algorithm, STC video tracking algorithm, siamesepn tracking algorithm.
The moving track of the target human body can be generated through the steps S801 and S802, so that the backtracking of workers is facilitated, and the moving direction of the target human body can be conveniently checked.
It should be noted that the steps illustrated in the above-described flow diagrams or in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flow diagrams, in some cases, the steps illustrated or described may be performed in an order different than here.
The application also provides a thermal imaging human body temperature measuring device, which is used for realizing the above embodiments and preferred embodiments, and the description is omitted. As used hereinafter, the terms "module," "unit," "subunit," and the like may implement a combination of software and/or hardware for a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware or a combination of software and hardware is also conceivable.
In some embodiments, fig. 9 is a block diagram of an apparatus for thermal imaging human body thermometry according to an embodiment of the present application, as shown in fig. 9, the apparatus includes: a first acquisition module 91 and a first processing module 92.
A first obtaining module 91, configured to obtain a thermal imaging image of a target human body;
the first processing module 92 is configured to locate a head region of the target human body from the thermal imaging image according to a preset head recognition algorithm, and determine a temperature of the head region according to the thermal imaging image, where the temperature of the head region indicates the temperature of the target human body.
Through the first acquiring module 91 and the first processing module 92, from the acquired thermal imaging image about the target human body, the first processing module 91 calls a preset head recognition algorithm to locate the head region of the target human body, including the center point of the head region and the width and height of the head region, and then obtains the temperature of the head region of the target human body through the thermal imaging image, and takes the temperature of the head region of the target human body as the temperature of the target human body. Because the temperatures of different body areas of the human body are different, the temperature of the head area of the human body indicates the temperature of the human body, and the body surface temperature of the naked skin of the human body, which is the target of measurement, indicates the temperature of the human body, so that the error is reduced, and the accuracy of the measurement of the temperature of the human body is improved.
In some embodiments, fig. 10 is another structural block diagram of an apparatus for thermal imaging human body thermometry according to an embodiment of the present application, and as shown in fig. 10, the apparatus further includes:
the first infrared module 101 is configured to obtain a target distance from the target human body to the thermal imaging camera before obtaining a thermal imaging image of the target human body, and determine whether the target distance is within a preset threshold range to determine whether the target human body is located in an effective area of the thermal imaging camera.
Before the thermal imaging image of the target human body is obtained, whether the target human body is located in the effective area of the thermal imaging camera is judged, and whether the effective area of the thermal imaging camera is the relatively accurate area for determining the temperature of the target human body through the thermal imaging image is judged.
In some embodiments, the first obtaining module 91 and the first processing module 92 are further configured to implement the steps in the thermal imaging human body temperature measurement method provided in each of the above embodiments, and are not described herein again.
The above modules may be functional modules or program modules, and may be implemented by software or hardware. For a module implemented by hardware, the modules may be located in the same processor; or the modules can be respectively positioned in different processors in any combination.
The present application further provides a thermal imaging human body temperature measurement device, fig. 11 is a first structural block diagram of another device for thermal imaging human body temperature measurement according to an embodiment of the present application, and as shown in fig. 11, the device includes: a second obtaining module 111 and a second processing module 112;
a second acquisition module 111 for acquiring visible light images and thermal imaging images of the target human body,
the second processing module 112 is configured to locate a head region of the target human body from the visible light image, determine the head region of the target human body in the thermal imaging image according to the head region in the visible light image, and determine a temperature of the head region according to the thermal imaging image, where the temperature of the head region indicates a temperature of the target human body.
From the acquired visible light image of the target human body, the second processing module 112 locates the head region of the target human body, then determines the head region of the target human body in the thermal imaging image according to the head region in the visible light image, then obtains the temperature of the head region of the target human body through the thermal imaging image, and takes the temperature of the head region of the target human body as the temperature of the target human body. Because the temperatures of different body areas of the human body are different, the temperature of the head area of the human body indicates the temperature of the human body, and the body surface temperature of the naked skin of the human body, which is the target of measurement, indicates the temperature of the human body, so that the error is reduced, and the accuracy of the measurement of the temperature of the human body is improved.
In some embodiments, the second obtaining module 111 is further configured to obtain consecutive multiple frames of visible light images of the target human body, and the second processing module 112 generates the moving track of the target human body through the consecutive multiple frames of visible light images according to a preset track tracking algorithm. The trajectory tracking algorithm includes, but is not limited to, KCF tracking algorithm, STC video tracking algorithm, siamesepn. The generated human body target moving track is convenient for the staff to backtrack, and the moving direction of the target human body is convenient to check.
In some embodiments, fig. 12 is a block diagram of another apparatus for thermal imaging human body temperature measurement according to an embodiment of the present application, and as shown in fig. 12, the apparatus further includes:
the second infrared module 1201 is configured to obtain a target distance from the thermal imaging camera to the target human body before obtaining a thermal imaging image of the target human body, and determine whether the target distance is within a preset threshold range to determine whether the target human body is located in an effective area of the thermal imaging camera.
Before the thermal imaging image of the target human body is obtained, whether the target human body is located in the effective area of the thermal imaging camera is judged, and whether the effective area of the thermal imaging camera is the relatively accurate area for determining the temperature of the target human body through the thermal imaging image is judged.
In some embodiments, the second obtaining module 111 and the second processing module 112 are further configured to implement the steps in the thermal imaging human body temperature measurement method provided in the foregoing embodiments, and are not described herein again.
Fig. 13 is a block diagram illustrating a structure of a thermal imaging human body temperature measurement system according to an embodiment of the present application, where the thermal imaging human body temperature measurement system includes a thermal imaging camera 131 and a central processing unit 132; a thermal imaging image of the target human body is acquired by the thermal imaging camera 131, the central processor 132 locates a head region of the target human body from the thermal imaging image according to a preset head recognition algorithm, and determines a temperature of the head region according to the thermal imaging image, wherein the temperature of the head region indicates the temperature of the target human body.
From the acquired thermal imaging image of the target human body, the central processor 132 invokes a preset head recognition algorithm to locate the head region of the target human body including the center point of the head region and the width and height of the head region, and then obtains the temperature of the head region of the target human body through the thermal imaging image, and takes the temperature of the head region of the target human body as the temperature of the target human body. Because the temperatures of different body areas of the human body are different, the temperature of the head area of the human body indicates the temperature of the human body, and the body surface temperature of the naked skin of the human body, which is the target of measurement, indicates the temperature of the human body, so that the error is reduced, and the accuracy of the measurement of the temperature of the human body is improved.
In some embodiments, fig. 14 is another structural block diagram of a system for thermal imaging human body temperature measurement according to an embodiment of the present application, and as shown in fig. 14, the system further includes an infrared sensor 1401 installed at the thermal imaging camera 131, where the infrared sensor 1401 is configured to acquire a target distance from the thermal imaging camera 131 to a target human body before acquiring a thermal imaging image of the target human body, and determine whether the target distance is within a preset threshold range to determine whether the target human body is located in an effective area of the thermal imaging camera 131.
In some embodiments, the steps in the thermal imaging human body temperature measurement method provided in the above embodiments may also be implemented when the central processing unit is executed, and are not described herein again.
Fig. 15 is a block diagram of a structure of another system for thermal imaging human body temperature measurement according to an embodiment of the present application, where the system includes a thermal imaging camera 152, a visible light camera 151, and a central processing unit 153; acquiring a thermal imaging image of the target human body through the thermal imaging camera 152, and acquiring a visible light image of the target human body through the visible light camera 151; the central processor 153 locates the head region of the target human body from the visible light image, determines the head region of the target human body in the thermal imaging image according to the head region in the visible light image, determines the temperature of the head region according to the thermal imaging image, and the temperature of the head region indicates the temperature of the target human body.
In some embodiments, the central processor may further obtain continuous multiple frames of visible light images of the target human body from the visible light camera 151, and generate the moving track of the target human body through the continuous multiple frames of visible light images according to a preset track tracking algorithm.
In some embodiments, fig. 16 is a block diagram of a second system for thermal imaging human body thermometry according to an embodiment of the present application, and as shown in fig. 16, the system further includes an infrared sensor 1601 installed at the thermal imaging camera 152, where the infrared sensor 1601 is used to obtain a target distance from the thermal imaging camera 152 before obtaining a thermal imaging image of the target human body, and determine whether the target distance is within a preset threshold range to determine whether the target human body is located in an effective area of the thermal imaging camera 152.
In some embodiments, the steps in the method for measuring human body temperature through thermal imaging provided in the above embodiments can be implemented when the central processing unit is executed, and are not described herein again.
In one embodiment, an electronic device is provided, which may be a terminal. The electronic device comprises a processor, a memory, a network interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the electronic device is used for connecting and communicating with an external terminal through a network. The computer program is executed by a processor to implement a method of thermographic thermometry of a human body. The display screen of the electronic equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the electronic equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the electronic equipment, an external keyboard, a touch pad or a mouse and the like.
In one embodiment, fig. 17 is a schematic diagram of an internal structure of an electronic device according to an embodiment of the present application, and as shown in fig. 17, there is provided an electronic device, which may be a server, and an internal structure diagram of which may be as shown in fig. 17. The electronic device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the electronic device is used for storing data. The network interface of the electronic device is used for connecting and communicating with an external terminal through a network. The computer program is executed by a processor to implement a method of thermographic thermometry of a human body.
Those skilled in the art will appreciate that the structure shown in fig. 17 is a block diagram of only a portion of the structure relevant to the present application, and does not constitute a limitation on the electronic device to which the present application is applied, and a particular electronic device may include more or less components than those shown in the drawings, or combine certain components, or have a different arrangement of components.
In one embodiment, an electronic device is provided, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the steps of the method for thermographic human body thermometry provided by the above embodiments.
In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, which when executed by a processor implements the steps in the method for thermographic thermometry of a human body provided by the various embodiments described above.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (13)
1. A human body temperature measurement method of thermal imaging is characterized by comprising the following steps:
acquiring a thermal imaging image of a target human body;
according to a preset head recognition algorithm, a head region of the target human body is located from the thermal imaging image, the temperature of the head region is determined according to the thermal imaging image, and the temperature of the head region indicates the temperature of the target human body.
2. The method of claim 1, wherein prior to determining the temperature of the head region from the thermographic image, the method further comprises:
identifying whether the head area of the target human body in the thermal imaging image is a front face or not according to a preset human face identification algorithm,
and under the condition that the head area of the target human body is the front face, determining the temperature of the head area according to the thermal imaging image.
3. The method of claim 1 or 2, wherein the determining the temperature of the head region from the thermographic image comprises:
and positioning a forehead area of the head area of the target human body according to a preset forehead area positioning algorithm, and determining the temperature of the head area according to the temperature of the forehead area.
4. The method of claim 1, wherein the thermal image is acquired by the thermal imaging camera, and wherein prior to acquiring the thermal image of the target human body, the method further comprises:
acquiring the position information of the target human body,
judging whether the target human body is positioned in the effective area of the thermal imaging camera according to the position information of the target human body,
And under the condition that the target human body is positioned in the effective area, acquiring a thermal imaging image of the target human body shot by the thermal imaging camera.
5. The method of claim 4, wherein the determining whether the target human body is located in an active area of the thermal imaging camera comprises:
an infrared device is adopted to obtain the target distance between the target human body and the thermal imaging camera,
and judging whether the target distance is within a preset threshold range so as to determine whether the target human body is positioned in an effective area of the thermal imaging camera.
6. The method of claim 1, wherein the determining the temperature of the head region from the thermographic image comprises:
giving the target human body identification mark;
acquiring continuous multi-frame thermal imaging images of the target human body according to the identification mark,
and calculating the average temperature of the head region in the continuous multi-frame thermal imaging images, wherein the average temperature is the temperature of the target human body.
7. The method of claim 1, wherein after determining the temperature of the head region from the thermographic image, the temperature of the head region being indicative of the temperature of the target human body, the method further comprises:
Judging whether the temperature of the target human body is higher than a preset threshold value,
and sending an alarm signal to an alarm device under the condition that the temperature of the target human body is higher than the preset threshold value, wherein the alarm device responds to the alarm signal to automatically alarm.
8. A human body temperature measurement method of thermal imaging is characterized by comprising the following steps:
acquiring a visible light image and a thermal imaging image of a target human body;
locating a head region of the target human body from the visible light image,
determining a head region of the target human body in the thermal imaging image according to the head region in the visible light image, and determining a temperature of the head region according to the thermal imaging image, wherein the temperature of the head region indicates the temperature of the target human body.
9. The method of claim 8, further comprising:
acquiring continuous multi-frame visible light images of the target human body,
and generating the moving track of the target human body through the continuous multi-frame visible light images according to a preset track tracking algorithm.
10. A thermographic human body thermometry apparatus, the apparatus comprising: the device comprises an acquisition module and a processing module;
The acquisition module is used for acquiring a thermal imaging image of a target human body;
the processing module is used for positioning a head area of the target human body from the thermal imaging image according to a preset head recognition algorithm, and determining the temperature of the head area according to the thermal imaging image, wherein the temperature of the head area indicates the temperature of the target human body;
the acquisition module and the processing module are further configured to implement the steps of the method according to any one of claims 1 to 7.
11. A thermographic human body thermometry apparatus, the apparatus comprising: the device comprises an acquisition module and a processing module;
the acquisition module is used for acquiring a visible light image and a thermal imaging image of a target human body;
the processing module is configured to locate a head region of the target human body from the visible light image, determine the head region of the target human body in the thermal imaging image according to the head region in the visible light image, and determine a temperature of the head region according to the thermal imaging image, where the temperature of the head region indicates the temperature of the target human body;
the acquisition module and the processing module are further configured to implement the steps of the method according to any one of claims 8 and 9.
12. A human body temperature measurement system of thermal imaging is characterized in that the system comprises a thermal imaging camera and a central processing unit;
acquiring a thermal image of the target human body by the thermal imaging camera, the central processor when executing is further configured to implement the steps of the method according to any one of claims 1 to 7.
13. A human body temperature measurement system of thermal imaging is characterized in that the system comprises a thermal imaging camera, a visible light camera and a central processing unit;
acquiring a thermal imaging image of a target human body through the thermal imaging camera, and acquiring a visible light image of the target human body through the visible light camera; the central processing unit when executing is further adapted to carry out the steps of the method according to any of claims 8 and 9.
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