CN115248081A

CN115248081A - Infrared temperature measurement system, method, device and storage medium

Info

Publication number: CN115248081A
Application number: CN202110455851.5A
Authority: CN
Inventors: 刘磊; 占胜; 赵耀
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2022-10-28

Abstract

An infrared temperature measurement technology belongs to the field of temperature measurement. The infrared camera shields the infrared lens based on the black body to obtain a first image of the black body and a corresponding predicted temperature value, then the infrared camera cancels shielding of the infrared lens based on the black body to obtain a second image of the shooting object and the corresponding predicted temperature value, and the infrared camera can correct the predicted temperature value of the second image. In the temperature measurement mode, the pixel area imaged by the black body corresponds to the pixel area imaged by the shooting object, so that the influence of the non-uniformity of the response rate of the infrared detector on the temperature measurement precision can be eliminated, and the temperature measurement precision is effectively improved.

Description

Infrared temperature measurement system, method, device and storage medium

Technical Field

The present application relates to the field of temperature measurement technologies, and in particular, to an infrared temperature measurement system, method, device, and storage medium.

Background

In recent years, non-contact temperature measurement technology is rapidly developed and widely popularized and applied. Among them, the infrared thermometer is widely used in various industries due to its advantages of fast response speed, wide measurement range and high sensitivity, and becomes one of the most important non-contact temperature measurement modes at present.

In the related art, in order to improve the temperature measurement accuracy, when an infrared thermometer is used, a black body needs to be erected beside a measured object, so that the infrared thermometer takes the real temperature of the black body as a reference temperature, and according to the temperature measurement deviation of pixel points corresponding to the region where the black body is located in a thermal imaging image, temperature measurement data of the pixel points corresponding to other regions except the region where the black body is located in the thermal imaging image are corrected. However, the temperature measurement method is affected by the non-uniformity of the responsivity of the infrared detector, so that the improvement effect of the temperature measurement precision is not good.

Disclosure of Invention

The embodiment of the application provides an infrared temperature measurement system, method, equipment and storage medium, and the temperature measurement precision of infrared temperature measurement can be effectively improved. The technical scheme is as follows:

in a first aspect, an infrared thermometry system is provided, the system comprising: black body and infrared cameras.

A black body for moving under the control of the infrared camera;

an infrared camera to:

acquiring a temperature value of the black body;

the black body is controlled to shield an infrared lens of the infrared camera through movement, and the black body is imaged based on the infrared lens shielded by the black body to obtain a first image;

the black body is controlled to move to cancel the shielding of the black body on the infrared lens, and a shooting object is imaged based on the infrared lens to obtain a second image;

correcting the predicted temperature value of the second image based on the predicted temperature value of the first image and the temperature value of the black body to obtain a target temperature value of the second image; the predicted temperature value of the first image is correlated to the gray scale value of the first image, and the predicted temperature value of the second image is correlated to the gray scale value of the second image.

In the embodiment of the application, the blackbody is regarded as a constant temperature target and comprises a plurality of components, and the components are used for correcting temperature measurement data obtained by infrared temperature measurement so as to improve the temperature measurement precision. Wherein the temperature value of the black body is obtained based on a component of the plurality of components that is regarded as a reference black body, for indicating a true temperature (measured temperature) of the black body.

The first image is an image (for example, a RAW image) generated by the infrared camera based on light received by the infrared lens when the infrared lens is completely shielded by the black body, that is, the RAW image of the black body. And calculating the predicted temperature value of the first image based on the gray value of the first image.

The second image is an image (for example, a RAW image) generated by the infrared camera based on light received by the infrared lens without any obstruction of the infrared lens, that is, the RAW image of the photographic subject. The predicted temperature value of the second image is calculated based on the gray value of the second image, and the shooting object refers to an object to be subjected to temperature measurement in the shooting area.

In the infrared temperature measurement system, the infrared camera obtains a first image of a black body and a corresponding predicted temperature value based on shielding of the black body on the infrared lens, and then the infrared camera cancels shielding of the infrared lens based on the black body to obtain a second image of a shooting object and a corresponding predicted temperature value, so that the infrared camera can correct the predicted temperature value of the second image according to the predicted temperature value of the first image and the temperature value of the black body. In the temperature measurement mode, the pixel area imaged by the black body corresponds to the pixel area imaged by the shooting object, so that the influence of the non-uniformity of the response rate of the infrared detector on the temperature measurement precision can be eliminated, and the temperature measurement precision is effectively improved.

Optionally, a first pixel region of the black body imaged in the first image corresponds to a second pixel region of the second image, the second pixel region including a third pixel region of the photographic subject imaged in the second image.

By the optional mode, the predicted temperature value corresponding to each pixel point in the imaging area corresponding to the shooting object can be corrected, and therefore the temperature measurement precision is effectively improved.

Optionally, the infrared camera is configured to control the black body to completely shield the infrared lens by moving, so that the infrared lens cannot receive infrared light of the shooting object.

The infrared camera lens is completely shielded by controlling the black body, so that the infrared camera can obtain an image only containing the black body, and guarantee is provided for subsequent accurate calculation of the temperature deviation value of the pixel point.

Optionally, the infrared camera is used for any one of:

(1) Correcting the predicted temperature value of the corresponding pixel point in the second image based on the predicted temperature value of each pixel point in the first image and the temperature value of the black body to obtain a target temperature value of the corresponding pixel point in the second image;

through this kind of optional mode, the infrared camera can be rectified the prediction temperature value of all pixel points in the second image to obtain the accurate target temperature value that whole second image corresponds, effectively promoted the temperature measurement precision.

(2) Determining a first area in a first image, wherein the range of the first area is smaller than that of the first image; correcting the predicted temperature value of a second area in the second image based on the predicted temperature value of a pixel point in a first area in the first image and the temperature value of the black body to obtain a target temperature value corresponding to the second area in the second image, wherein the second area is an area where a shooting object in the second image is located, and the position of the first area in the first image is the same as the position of the second area in the second image;

through the optional mode, the infrared camera can correct the predicted temperature value of the pixel point of the area where the shooting object is located in the second image, so that under the condition that the temperature of the shooting object is accurately measured, the calculated amount of data processing is reduced, and the temperature measurement efficiency is improved.

Optionally, the infrared camera is used for any one of:

correcting the predicted temperature value of the corresponding pixel point in the second area based on the predicted temperature value of each pixel point in the first area in the first image and the temperature value of the black body to obtain a target temperature value of the corresponding pixel point in the second area in the second image;

through the optional mode, the infrared camera corrects the predicted temperature value of each pixel point of the area where the shooting object is located in the second image, and the temperature measurement precision is further improved under the condition that the temperature of the shooting object is accurately measured.

Correcting the average predicted temperature value of a second area in the second image based on the average predicted temperature value of the pixel point in the first area in the first image and the temperature value of the black body to obtain a target temperature value corresponding to the second area in the second image;

through the optional mode, the average predicted temperature value of the pixel point of the area where the shooting object is located in the second image is corrected by the infrared camera, under the condition that the temperature of the shooting object is accurately measured, the calculated amount of data processing is further reduced, and the temperature measurement efficiency is improved.

Optionally, the infrared camera is configured to:

based on the predicted temperature value of each pixel point in the first image and the temperature value of the black body, correcting the predicted temperature value of the corresponding pixel point in the second image to obtain a target temperature value of the corresponding pixel point in the second image, including:

obtaining a temperature deviation value of each pixel point in the first image based on a difference value between the predicted temperature value of each pixel point in the first image and the temperature value of the black body;

and correcting the predicted temperature value of the corresponding pixel point in the second image based on the temperature deviation value of each pixel point in the first image to obtain the target temperature value of the corresponding pixel point in the second image.

Through the optional mode, the infrared camera can correct the predicted temperature values of all the pixel points in the second image, so that the accurate target temperature value corresponding to the whole second image is obtained, and the temperature measurement precision is effectively improved.

Optionally, the black body comprises a motor, a black body baffle, a temperature sensor and a temperature controller;

the motor is used for: receiving the control of the infrared camera and driving the black body blocking piece to open or close;

this black body separation blade is used for: when the black body blocking piece is in a closed state, completely shielding the infrared lens;

the temperature sensor is used for: collecting the temperature value of the black body blocking piece, and sending the temperature value of the black body blocking piece as the temperature value of the black body to the temperature controller and the infrared camera;

the temperature controller is configured to: and receiving the control of the infrared camera, and controlling the temperature of the black body based on the temperature value of the black body so as to enable the temperature value of the black body to be in a target temperature interval.

Optionally, this black body separation blade has black body coating towards the surface covering of this infrared camera lens, and this black body separation blade is provided with the semiconductor refrigeration piece towards the surface of this shooting object, and this semiconductor refrigeration piece is used for: and receiving the control of the temperature controller to enable the temperature value of the black body to be in the target temperature interval.

Through above-mentioned optional mode, the black body separation blade can be as the reference black body, provides the temperature offset value for infrared camera, realizes revising the prediction temperature value of the corresponding image of shooting object, has improved the temperature measurement precision.

Optionally, the infrared temperature measurement system further includes: the first controller is connected with the infrared camera and the first display screen respectively;

the infrared camera is also used for sending the second image and the target temperature value of the second image to the first controller;

the first controller is used for generating temperature information of the second image based on the received second image and a target temperature value of the second image, and sending the temperature information of the second image to the first display screen;

the first display screen is used for displaying the second image marked with the temperature information based on the received temperature information of the second image.

Through the optional mode, the infrared temperature measurement system can realize visual temperature monitoring under the condition of ensuring that the temperature of the shooting object is accurately measured.

Optionally, the infrared temperature measurement system further includes: the second controller is respectively connected with the infrared camera, the visible light camera and the second display screen;

the infrared camera is also used for sending the second image and the target temperature value of the second image to the second controller;

the visible light camera is used for imaging the shooting object to obtain a third image and sending the third image to the second controller;

the second controller is used for generating temperature information of the second image and temperature information of the third image based on the received second image, the target temperature value of the second image and the third image, and sending the temperature information of the second image and the temperature information of the third image to the second display screen;

the second display screen is used for displaying the third image marked with the temperature information based on the received temperature information of the second image and the received temperature information of the third image, or simultaneously displaying the second image marked with the temperature information and the third image marked with the temperature information.

Through the optional mode, the infrared temperature measurement system can realize individualized visual temperature monitoring under the condition of ensuring that the temperature of the shooting object is accurately measured.

In a second aspect, an infrared temperature measurement method is provided, which is applied to an infrared temperature measurement system, and the infrared temperature measurement system includes: blackbody and infrared cameras, the method comprising:

the infrared camera acquires a temperature value of the black body;

the infrared camera controls the black body to shield an infrared lens of the infrared camera through movement, the black body is imaged based on the infrared lens shielded by the black body to obtain a first image, and the black body is used for moving under the control of the infrared camera;

the infrared camera controls the black body to remove the shielding of the black body on the infrared lens through movement, and images a shooting object based on the infrared lens to obtain a second image;

the infrared camera corrects the predicted temperature value of the second image based on the predicted temperature value of the first image and the temperature value of the black body to obtain a target temperature value of the second image; the predicted temperature value of the first image is correlated to the gray scale value of the first image, and the predicted temperature value of the second image is correlated to the gray scale value of the second image.

Optionally, the controlling the black body to shield the infrared lens of the infrared camera by moving includes: and controlling the black body to completely shield the infrared lens by moving so that the infrared lens cannot receive the infrared light of the shooting object.

Optionally, a first pixel region imaged by the black body in the first image corresponds to a second pixel region in the second image, and the second pixel region includes a third pixel region imaged by the photographic subject in the second image.

Optionally, the correcting the predicted temperature value of the second image based on the predicted temperature value of the first image and the temperature value of the black body to obtain the target temperature of the second image includes any one of the following:

(2) Determining a first area in a first image, wherein the range of the first area is smaller than that of the first image; and correcting the predicted temperature value of a second area in the second image based on the predicted temperature value of the pixel point in the first area in the first image and the temperature value of the black body to obtain a target temperature value corresponding to the second area in the second image, wherein the second area is an area where a shooting object in the second image is located, and the position of the first area in the first image is the same as the position of the second area in the second image.

Optionally, the correcting the predicted temperature value of the second region in the second image based on the predicted temperature value of the pixel point in the first region in the first image and the temperature value of the black body to obtain a target temperature value corresponding to the second region in the second image includes any one of the following:

and correcting the average predicted temperature value of the second area in the second image based on the average predicted temperature value of the pixel point in the first area in the first image and the temperature value of the black body to obtain a target temperature value corresponding to the second area in the second image.

Optionally, the correcting the predicted temperature value of the corresponding pixel point in the second image based on the predicted temperature value of each pixel point in the first image and the temperature value of the black body to obtain the target temperature value of the corresponding pixel point in the second image includes:

the temperature sensor is used for: collecting the temperature value of the black body blocking piece, and sending the temperature value of the black body blocking piece to the temperature controller and the infrared camera as the temperature value of the black body;

Optionally, the surface of the black body blocking piece facing the infrared lens is covered with a black body coating, the surface of the black body blocking piece facing the shooting object is provided with a semiconductor refrigeration piece, and the semiconductor refrigeration piece is used for: and receiving the control of the temperature controller to enable the temperature value of the black body to be in the target temperature interval.

In a third aspect, an infrared thermometry apparatus is provided, where the infrared thermometry apparatus includes a processor and a memory, where the memory is used to store at least one program code, and the at least one program code is loaded and executed by the processor, so that the infrared thermometry apparatus implements the infrared thermometry method provided in any one of the second aspect and the second aspect.

In a fourth aspect, a computer-readable storage medium is provided, which is used for storing at least one program code, and the at least one program code is loaded and executed by a processor, so as to enable an infrared thermometry apparatus to implement the infrared thermometry method provided in the second aspect or any one of the alternatives of the second aspect.

In a fifth aspect, a computer program product or a computer program is provided, which comprises program code which, when run on an infrared thermometry apparatus, causes the infrared thermometry apparatus to perform the infrared thermometry method as provided in the second aspect or in the various alternative implementations of the second aspect.

Drawings

Fig. 1 is a schematic structural diagram of an infrared temperature measurement system according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a blackbody according to an embodiment of the present application;

FIG. 3 is a schematic view of a black body blocking plate according to an embodiment of the present disclosure;

FIG. 4 is a flowchart of an infrared temperature measurement method according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of an infrared temperature measurement system provided by an embodiment of the present application;

FIG. 6 is a flowchart of an infrared temperature measurement method provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of an infrared temperature measurement system provided by an embodiment of the present application;

FIG. 8 is a flowchart of an infrared temperature measurement method provided in an embodiment of the present application;

fig. 9 is a schematic structural diagram of an infrared temperature measurement device according to an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

For convenience of understanding, before describing the technical solutions provided in the embodiments of the present application, the following description will be made on the key terms related to the present application.

Infrared imaging techniques, where an object in nature radiates energy outward continuously as long as its temperature is above absolute zero, as a result of thermal movement of some molecules within the object. The infrared imaging technology is to convert the radiation into an infrared image which can be observed by human eyes and can be used for measurement and analysis according to the detected radiation energy of the shooting object.

Infrared temperature measurement is a temperature measurement method for accurately measuring the temperature of a photographic subject based on an infrared image of the photographic subject without contacting the photographic subject by using an infrared imaging technology.

A black body (black body), an ideal object, can theoretically absorb all the electromagnetic radiation from the outside and does not have any reflection and transmission. In other words, a black body has an absorption coefficient of 1 and a transmission coefficient of 0 for an electromagnetic wave of any wavelength. It should be noted that in the embodiments of the present application, the black body includes a plurality of components, wherein the component regarded as the reference black body is an idealized object, and theoretically, can absorb all the electromagnetic radiation from the outside without any reflection and transmission.

A metal-oxide-semiconductor field-effect transistor (MOSFET), referred to as a MOS transistor for short, belongs to an insulated gate type in a field-effect transistor. In general electronic circuits, MOS transistors are generally used for an amplifier circuit or a switch circuit. The MOS transistor is illustratively a voltage controlled element that is turned on to function as a switch as long as the voltage required by the MOS transistor is applied.

A proportional-integral-differential (PID) algorithm, which is a control algorithm combining three links of proportion, integral and differential. The PID algorithm can operate according to the input deviation value and the functional relation of proportion, integral and differential, thereby realizing the aim of controlling the parameters. In the embodiment of the application, the PID algorithm is used for controlling the temperature value of the black body.

An image sensor, also called a photosensitive element, is a device that converts an optical signal into an electronic signal, and is widely used in digital video cameras and other electronic optical devices. In the embodiments of the present application, two image sensors are mentioned, one is an infrared sensor (also referred to as an infrared detector, and it is to be noted that, in the following embodiments, both are referred to as an infrared detector) configured in an infrared camera for converting an infrared light signal into an electronic signal; the other is a visible light sensor, which is arranged in a visible light camera, for converting a visible light signal into an electronic signal.

The RAW image format (RAW image format) is RAW image data in which an image sensor converts a captured optical signal into an electronic signal, that is, grayscale data of an image.

The method comprises the steps of performing non-uniform correction, wherein under a general condition, the temperature reading of an infrared thermometer is interfered by the heat of the infrared thermometer, and micro detector drift is generated.

And blind pixel compensation, wherein the blind pixels are formed by detectors with too low or too high response in the infrared detector array, and appear as dark spots or bright spots on an image to influence the infrared imaging quality, so that a higher-quality and more accurate thermal infrared image needs to be generated in a blind pixel compensation mode.

On Screen Display (OSD), which is a technology for displaying desired characters on a screen of a display using a character generation chip, allows a user to obtain some information by generating some special fonts or graphics in the screen of the display.

The following presents a brief introduction to the application scenario of the present application.

The infrared temperature measurement system and the infrared temperature measurement method provided by the embodiment of the application can be applied to scenes such as human body temperature measurement scenes and urban safety scenes which need to carry out rapid temperature measurement on shot objects. Illustratively, the scenarios in which the infrared temperature measurement system and the method provided by the embodiment of the present application can be applied include, but are not limited to:

scene one, human body temperature measurement scene

Infrared thermometry systems are deployed in many public places. For example, an infrared temperature measuring system is configured at a gate which needs to pass through when people take public transportation, so that the body temperature condition of people on a trip can be monitored in time; for another example, an infrared temperature measuring system is arranged at an entrance and an exit of a large business surpass so as to monitor the body temperature condition of personnel entering a closed public place in time. Under this scene, when the pedestrian passes through infrared temperature measurement system, infrared temperature measurement system can carry out the temperature measurement to the pedestrian to output pedestrian's body temperature data, so that the staff monitors pedestrian's body temperature situation.

Scene two, city safety scene

In order to guarantee urban safety, an urban management system is often matched with the urban management system in the urban management process, the urban management system can meet the requirements of urban management, traffic management, emergency command and the like, and the requirements of accident early warning, safety production monitoring and the like on temperature monitoring can be met. By combining the city management system and the infrared temperature measurement system, online visual temperature monitoring can be realized. For example, the body temperature condition of the pedestrian is monitored, and the abnormal body temperature condition is reported in time so as to help the pedestrian in time; for example, the temperature conditions of buildings, vehicles and other objects in a city are monitored, and the condition of obvious abnormal temperature is reported in time, so that the disaster situation can be found in time, and the life health and property safety of people can be guaranteed. Under the scene, the infrared temperature measurement system can measure the temperature of moving targets such as pedestrians and vehicles and fixed targets such as buildings, and report corresponding temperature data so as to meet the requirement of temperature monitoring under the urban safety scene.

It should be noted that the foregoing scenarios are only exemplary descriptions, and the infrared temperature measurement system and the method provided in the embodiment of the present application can be applied to various scenarios that need to perform rapid temperature measurement.

The following describes a structure of an infrared temperature measurement system provided in an embodiment of the present application.

Fig. 1 is a schematic structural diagram of an infrared temperature measurement system according to an embodiment of the present application. The infrared temperature measurement system 100 includes: a black body 101 and an infrared camera 102. Optionally, the infrared camera 102 includes: an infrared lens 1021, an infrared detector 1022, a processing module 1023 and an interface board module 1024, wherein the black body 101 is connected with the processing module 1023 and the interface board module 1024 respectively.

A black body 101 for moving under the control of an infrared camera 102;

an infrared camera 102 for:

acquiring a temperature value of the black body 101;

the method comprises the steps that the black body 101 is controlled to shield an infrared lens 1021 of the infrared camera 102 through movement, and the black body 101 is imaged based on the infrared lens 1021 shielded by the black body 102 to obtain a first image;

the black body 101 is controlled to cancel the shielding of the black body 101 on the infrared lens 1021 through moving, and a shooting object is imaged based on the infrared lens 1021 to obtain a second image;

correcting the predicted temperature value of the second image based on the predicted temperature value of the first image and the temperature value of the black body 101 to obtain a target temperature value of the second image; the predicted temperature value of the first image is correlated to the gray scale value of the first image, and the predicted temperature value of the second image is correlated to the gray scale value of the second image.

Optionally, the infrared camera 102 is configured to control the black body 101 to completely shield the infrared lens 1021 by moving, so that the infrared lens 1021 cannot receive infrared light of a shooting object.

Optionally, a first pixel region of the black body 101 imaged in the first image corresponds to a second pixel region of the second image, the second pixel region including a third pixel region of the photographic subject imaged in the second image.

Optionally, the infrared camera 102 is used for any one of:

correcting the predicted temperature value of the corresponding pixel point in the second image based on the predicted temperature value of each pixel point in the first image and the temperature value of the black body 101 to obtain a target temperature value of the corresponding pixel point in the second image;

and correcting the predicted temperature value of a second area in the second image based on the predicted temperature value of the pixel point in the first area in the first image and the temperature value of the black body 101 to obtain a target temperature value corresponding to the second area in the second image, wherein the second area is an area where a shooting object in the second image is located, and the position of the first area in the first image is the same as the position of the second area in the second image.

Optionally, the infrared camera 102 is used for any one of:

correcting the predicted temperature value of the corresponding pixel point in the second area based on the predicted temperature value of each pixel point in the first area in the first image and the temperature value of the black body 101 to obtain a target temperature value of the corresponding pixel point in the second area in the second image;

and correcting the average predicted temperature value of the second area in the second image based on the average predicted temperature value of the pixel point in the first area in the first image and the temperature value of the black body 101 to obtain a target temperature value corresponding to the second area in the second image.

Optionally, the infrared camera 102 is configured to:

obtaining a temperature deviation value of each pixel point in the first image based on a difference value between the predicted temperature value of each pixel point in the first image and the temperature value of the black body 101;

and correcting the predicted temperature value of the corresponding pixel point in the second image based on the temperature deviation value of each pixel point in the first image to obtain a target temperature value of the corresponding pixel point in the second image.

The structure of the black body 101 in the infrared temperature measurement system provided by the embodiment of the present application is described below.

Fig. 2 is a schematic structural diagram of a black body according to an embodiment of the present application. As shown in fig. 2, the black body 101 includes: motor 1011, black body cover 1012, temperature sensor 1013, and temperature controller 1014. Alternatively, the black body cover 1012 is connected to the motor 1011, the temperature sensor 1013, and the temperature controller 1014, respectively, and the infrared camera 102 is connected to the motor 1011, the temperature sensor 1013, and the temperature controller 1014, respectively.

A motor 1011 for driving the black body blocking piece 1012 to open or close under the control of the infrared camera 102;

a black body blocking piece 1012 for completely blocking the infrared lens 1021 when the black body blocking piece 1012 is in a closed state;

the temperature sensor 1013 is used for collecting a temperature value of the black body blocking piece 1012 and sending the temperature value of the black body blocking piece 1012 to the temperature controller 1013 and the infrared camera 102;

and the temperature controller 1014 is used for being controlled by the infrared camera 102, and controlling the temperature of the black body blocking piece 1012 based on the temperature value of the black body blocking piece 1012 so that the temperature value of the black body blocking piece 1012 is in a target temperature range.

Optionally, a surface of the black body blocking piece 1012 facing the infrared lens 1021 is covered with a black body paint, and a surface of the black body blocking piece 1012 facing the shooting object is provided with a semiconductor refrigeration piece, and the semiconductor refrigeration piece is controlled by the temperature controller 1014 to enable a temperature value of the black body to be within a target temperature range. Referring to fig. 3, fig. 3 is a schematic view of a black body blocking plate provided in an embodiment of the present application, and as shown in fig. 3, a black body coating covers a front surface of the black body blocking plate, and a semiconductor chilling plate, a temperature sensor, and a temperature controller are disposed on a back surface of the black body blocking plate.

It should be noted that fig. 2 and fig. 3 are only schematic structural diagrams of an exemplary black body provided by the embodiment of the present application, and in practical applications, the position and the connection manner of each component described above can be set according to requirements of a user, for example, the temperature sensor 1013 may be attached to the surface of the black body barrier 1012 to collect a temperature value of the black body barrier in real time. For another example, the temperature sensor 1013 may also be disposed near the black body barrier 1012, that is, the temperature value of the black body barrier 1012 is collected in real time by a non-contact temperature measurement method, which is not limited in this embodiment of the present application.

In addition, the components of the black body 101 are not limited to the above 1011 to 1014, and in practical applications, more components can be arranged according to the requirements of the user, and the structure of the black body 101 is not limited in the embodiment of the present application.

The system architecture of the infrared temperature measurement system provided in the embodiment of the present application is introduced above, and the following describes an exemplary infrared temperature measurement method provided in the embodiment of the present application.

Fig. 4 is a flowchart of an infrared temperature measurement method according to an embodiment of the present application, where in the embodiment of the present application, the infrared temperature measurement method is applied to the infrared temperature measurement system. This infrared temperature measurement system includes: black body and infrared cameras. The method comprises the following steps:

401. and the infrared camera sends a temperature control instruction to the black body, and the temperature control instruction is used for controlling the temperature value of the black body to be in a target temperature interval.

In the embodiment of the application, the temperature value of the black body refers to the real temperature of the black body and is acquired by a temperature sensor of the black body. The infrared camera sends a temperature control instruction to the black body to trigger the black body to control the temperature, so that the temperature value of the black body is in a target temperature interval. The temperature control instruction carries temperature information, and the temperature information is used for indicating a target temperature interval.

Optionally, the target temperature range is close to the temperature of the photographic subject to be measured. For example, when the subject is a human body, the target temperature range is set to 37 ± t ℃, t >0. The mode of setting the target temperature interval to be close to the temperature of the shooting object can reduce the precision requirement of the infrared detector on the calibration of the response rate, thereby improving the production efficiency of the infrared temperature measurement system.

Optionally, the infrared camera is connected to the terminal through a wireless network or a wired network. And a specified application program is operated on the terminal and is used for carrying out function setting on the infrared camera. For example, the specified application program provides a setting option for the temperature of the black body, the user can operate on the terminal to set the target temperature interval of the black body, and the terminal responds to the setting operation of the user on the target temperature interval and sends a corresponding first instruction to the infrared camera, wherein the first instruction is used for triggering the infrared camera to send a temperature control instruction to the black body.

It is noted that in some embodiments, the processing component of the infrared camera is communicatively coupled to the black body, and this step 401 is performed by the processing component of the infrared camera. In other embodiments, the interface board assembly of the infrared camera is communicatively coupled to the black body, and step 401 is performed by the interface board assembly of the infrared camera. In other embodiments, the infrared camera further includes a control component, and the control component of the infrared camera is communicatively connected to the black body, and this step 401 is performed by the control component of the infrared camera, which is not limited in this embodiment of the present application.

402. And the black body receives a temperature control instruction sent by the infrared camera and controls the temperature of the black body so as to enable the temperature value of the black body to be in a target temperature interval.

In the embodiment of the application, the blackbody receives a temperature control instruction sent by the infrared camera, and performs temperature control on the blackbody based on temperature information carried in the temperature control instruction so that the temperature value of the blackbody is in a target temperature interval.

The following describes a specific implementation of this step 402 with reference to the boldfaced architecture shown in fig. 2.

In the embodiment of the present application, as shown in fig. 2, the black body 101 includes a motor 1011, a black body blocking piece 1012, a temperature sensor 1013 and a temperature controller 1014, the black body blocking piece 1012 is respectively connected to the motor 1011, the temperature sensor 1013 and the temperature controller 1014, and the infrared camera 102 is respectively connected to the motor 1011, the temperature sensor 1013 and the temperature controller 1014. Optionally, the blackbody operating power is provided by an interface board assembly of the infrared camera. Illustratively, this step 402 includes the following steps one to three:

and step one, the temperature controller of the black body receives a temperature control instruction sent by the infrared camera.

Optionally, the black body further includes a main control chip, and the main control chip of the black body is in communication connection with the infrared camera, and is configured to receive each instruction sent by the infrared camera, and distribute each instruction to a corresponding component. In some embodiments, the black body main control chip receives a temperature control instruction sent by the infrared camera, and sends the temperature control instruction to the black body temperature controller, which is not limited in this embodiment of the present application.

And step two, the temperature sensor of the black body sends the acquired temperature value of the black body blocking piece as the temperature value of the black body to the temperature controller of the black body.

Optionally, the temperature sensor of the black body is configured to acquire a temperature value of the black body blocking piece in real time, and send the temperature value of the black body blocking piece as the temperature value of the black body to the temperature controller of the black body. Optionally, the temperature sensor of the black body is a high-precision temperature sensor, the precision can reach 0.05 ℃, and the embodiment of the application does not limit the precision. Optionally, the temperature sensor of the black body is disposed at an edge of the surface of the black body blocking plate, or the temperature sensor of the black body is disposed at a center of the surface of the black body blocking plate.

In some embodiments, the temperature controller of the black body sends a temperature acquisition request to the temperature sensor of the black body after receiving the temperature control command, and the temperature sensor of the black body sends the temperature value of the black body blocking piece to the temperature controller of the black body in response to the temperature acquisition request. In other embodiments, no matter whether the temperature controller of the black body receives the temperature control instruction, the temperature sensor of the black body sends the acquired temperature value of the black body blocking piece to the temperature controller of the black body in real time.

And thirdly, the temperature controller of the black body controls the temperature of the black body based on the temperature value of the black body so as to enable the temperature value of the black body to be in a target temperature interval.

Optionally, a semiconductor refrigeration piece is arranged on the surface of the black body separation blade facing the shooting object, and the semiconductor refrigeration piece is used for being controlled by a temperature controller of the black body to enable the real temperature of the black body separation blade to be within a target temperature range. The temperature controller of the black body drives the circuit circulation through the MOS pipe based on the received temperature value of the black body separation blade, thereby heating the semiconductor refrigeration sheet and enabling the temperature value of the black body separation blade to be within a target temperature range. In some embodiments, the temperature controller of the black body calls a PID algorithm to control the temperature value of the black body blocking piece, so as to ensure that the temperature value of the black body blocking piece is within a target temperature range, and improve the accuracy of temperature control. In some embodiments, the semiconductor refrigerating sheet is made of a superconducting material, so that the black body blocking sheet has good temperature uniformity.

It should be noted that the blackbody structure shown in fig. 2 is only an exemplary structure, and in some embodiments, components of the blackbody are not limited to 1011 to 1014 shown in fig. 2, that is, in this step 402, the blackbody can also perform temperature control through other components, which is not limited by the embodiment of the present application.

403. The infrared camera sends a temperature acquisition request to the black body, and the temperature acquisition request is used for acquiring the temperature value of the black body.

In some embodiments, the processing component of the infrared camera is communicatively coupled to the black body, and step 403 is performed by the processing component of the infrared camera. In other embodiments, the interface board assembly of the infrared camera is communicatively coupled to the black body, and step 403 is performed by the interface board assembly of the infrared camera. In other embodiments, the infrared camera further includes a control component, and the control component of the infrared camera is communicatively connected to the black body, and this step 403 is performed by the control component of the infrared camera, which is not limited in this embodiment of the present application.

404. The blackbody responds to the temperature acquisition request and sends the temperature value of the blackbody to the infrared camera.

In some embodiments, the temperature sensor of the black body is connected to the interface board assembly of the infrared camera, and the temperature sensor of the black body transmits the temperature value of the black body to the interface board assembly of the infrared camera in response to the temperature acquisition request. In other embodiments, the blackbody further includes a main control chip, and the main control chip of the blackbody responds to the temperature obtaining request and forwards the temperature obtaining request to the temperature controller of the blackbody, which is not limited in this embodiment of the present application.

The above steps 403 and 404 are processes of actively acquiring the corresponding temperature value from the black body by the infrared camera, and in some embodiments, the infrared camera acquires the temperature value of the black body by other methods. That is, the infrared camera does not need to send a temperature acquisition request to the blackbody, and the blackbody automatically sends the temperature value of the blackbody to the infrared camera. Optionally, the black body sends the temperature value of the black body to the infrared camera in response to the temperature value of the black body being in the target temperature interval. Optionally, the black body sends the temperature value of the black body to the infrared camera every preset time interval, which is not limited in the embodiment of the present application.

405. The method comprises the steps that the infrared camera sends a first moving instruction to the black body, and the first moving instruction is used for controlling the black body to completely shield an infrared lens of the infrared camera through movement.

In the embodiment of the present application, the black body can be moved under the control of the infrared camera. The complete shielding means that the light path of the shooting area is completely shielded, so that the infrared lens cannot receive the infrared light of the shooting object.

Optionally, the infrared camera is connected to the terminal through a wireless network or a wired network. And a specified application program is operated on the terminal and is used for carrying out function setting on the infrared camera. For example, the specified application program provides a setting option of the black body movement time, the user can operate on the terminal to set the black body movement time, and the terminal responds to the user's setting operation of the movement time and sends a corresponding second instruction to the infrared camera, wherein the second instruction is used for triggering the infrared camera to send the first movement instruction to the black body. Illustratively, the user can operate on the terminal to set the moving time of the black body to move once every preset time interval, for example, the black body completely shields the infrared lens once every 1 hour interval. Schematically, the user can also operate on the terminal, and the moving moment of the black body is controlled in real time, that is, the user can control the black body to completely shield the infrared lens through moving according to actual requirements at any time, and the embodiment of the application does not limit the moving moment.

It should be noted that, in some embodiments, the first movement instruction is used to control the black body to shield the infrared lens of the infrared camera by moving, so that the infrared lens can receive part of the infrared light of the shooting object. For example, it is assumed that the size of an image obtained by an infrared camera based on a photographic subject is L × L (L > 0), and when the black body blocks the infrared lens, the infrared camera images the black body based on the infrared lens blocked by the black body, and the size of an area occupied by the black body in the obtained image is L-k × L-k (k > 0), which is not limited in the embodiment of the present application.

Additionally, in some embodiments, the processing component of the infrared camera is communicatively coupled to the black body, and this step 405 is performed by the processing component of the infrared camera. In other embodiments, where the interface board assembly of the infrared camera is communicatively coupled to the blackbody, this step 405 is performed by the interface board assembly of the infrared camera. In other embodiments, the infrared camera further includes a control component, and the control component of the infrared camera is communicatively connected to the black body, and this step 405 is performed by the control component of the infrared camera, which is not limited in this embodiment of the present application.

406. The black body receives a first moving instruction sent by the infrared camera, and the infrared lens is completely shielded through moving, so that the infrared lens cannot receive infrared light of a shooting object.

In the embodiment of the application, the blackbody receives the first moving instruction sent by the infrared camera, and completely shields the infrared lens, so that the infrared lens cannot receive the infrared light of the shooting object. The infrared camera lens is completely shielded by controlling the black body, so that the infrared camera can obtain an image only containing the black body, and guarantee is provided for subsequent accurate calculation of the temperature deviation value of the pixel point.

The following description will be made with reference to the structure of the black body shown in fig. 2, taking the example that the black body completely shields the infrared lens by moving, and the specific implementation of step 406 includes the following steps:

step one, a blackbody motor receives a first moving instruction sent by an infrared camera.

Optionally, the blackbody further includes a main control chip, and the main control chip of the blackbody receives the first moving instruction sent by the infrared camera and sends the first moving instruction to the motor of the blackbody.

And step two, the black body motor drives the black body blocking piece to close based on the first moving instruction, so that the black body blocking piece completely blocks the infrared lens in a closed state.

Optionally, the black body blocking plate is closed in any one of the following manners: first, the black body motor can drive the black body blocking piece to be closed in a left-right pushing or up-down pushing mode in front of the infrared lens, and the closing mode of the curtain type shutter of the camera can be specifically referred to. Secondly, the blackbody motor can drive the blackbody blocking piece to close in a manner of rotating from the edge to the center in front of the infrared lens, and specifically, the closing manner of the rotary shutter of the camera can be referred to. And thirdly, the blackbody motor can drive the blackbody blocking piece to be closed in a clockwise rotation or anticlockwise rotation mode in front of the infrared lens, and specifically the folding fan opening mode can be referred to. It should be noted that, in practical applications, the closing manner of the black body blocking plate is not limited to the three manners, but can be set in any movable manner, specifically, the movable manner of the black body blocking plate is set according to the requirement of the user, for example, the cost requirement, the aesthetic requirement, the service life requirement and the like are considered, and the movable manner of the black body blocking plate is not specifically limited in the embodiments of the present application.

Optionally, a black body coating covers a surface of the black body blocking piece facing the infrared lens, and when the black body blocking piece is in a closed state, the infrared lens is completely blocked. Optionally, the emissivity of the black body coating is greater than or equal to 0.95, and the black body coating has good radiation performance.

It should be noted that, in some embodiments, the black body blocking plate is made of a black body material, and in practical applications, a developer can set the shape of the black body blocking plate and the required material according to requirements. In other embodiments, the black body blocking plate may also be replaced with another type of component, for example, the black body blocking plate is replaced with a cavity whose outer surface is covered with black body paint, and the cavity can move the outer surface covered with black body paint to the front of the infrared lens under the driving of the motor to completely shield the infrared lens, which is not limited in this embodiment of the application.

In addition, in some embodiments, a heat insulation device is arranged between the black body and the infrared camera, so that heat of the black body can be prevented from being transmitted to the infrared camera, the influence of black body radiation on the temperature of the infrared camera is reduced, and the temperature measurement precision is further improved.

It should be understood that, based on the above step 405, in some embodiments, the black body receives the first moving instruction sent by the infrared camera, and the black body shields the infrared lens, so that the infrared lens can receive part of the infrared light of the object to be photographed, for example, by adjusting the size of the black body blocking piece in the closed state, so that the infrared lens can receive part of the infrared light of the object to be photographed, which is not limited in this application embodiment.

407. The infrared camera images the black body based on the infrared lens shielded by the black body to obtain a first image.

In the embodiment of the present application, the first image is an image (for example, a RAW image) generated by the infrared camera based on light received by the infrared lens when the infrared lens is completely shielded by the black body, that is, the RAW image of the black body. Optionally, this step 407 is performed by an infrared detector in an infrared camera.

408. And acquiring a predicted temperature value of the first image by an infrared camera, wherein the predicted temperature value of the first image is related to the gray value of the first image.

In the embodiment of the application, the infrared camera performs non-uniform correction and blind pixel compensation on the first image to obtain a corrected first image, then the infrared camera obtains an association relationship between a predicted temperature value and a gray value, and the association relationship is applied to calculate and obtain the predicted temperature value of the first image based on the gray value of the corrected first image. Optionally, this step 408 is performed by a processing component in the infrared camera.

Alternatively, the expression of the above-described association relationship is as shown in the following formula (1):

in the formula, f is a polynomial, T is a predicted temperature value of a certain pixel point in the image, d is a gray value of a corresponding pixel point in the image, and a ₀ 、a ₁ 、a ₂ …a _n Is a polynomial coefficient, and n is a positive integer. Fitting is carried out through the gray values of the multiple pixel points and the corresponding temperature values to obtain the polynomial coefficient, and therefore the incidence relation is established. It should be noted that, in some embodiments, the association relationship may have other expressions, and the embodiments of the present application do not limit this.

Optionally, the infrared camera further includes an inner correction shutter, configured to provide a reference starting point of the predicted temperature value and the gray value in the association relationship, that is, when the inner correction shutter is closed, the inner correction shutter completely shields the infrared lens, and at this time, the infrared camera obtains a RAW image of the inner correction shutter, so as to obtain the reference starting point of the gray value, and meanwhile, a temperature sensor disposed near the inner correction shutter obtains the temperature value of the inner correction shutter, so as to obtain the reference starting point of the predicted temperature value, and according to the reference starting point of the predicted temperature value and the gray value, a temperature value and a gray value corresponding to any image can be obtained, so that the association relationship between the predicted temperature value and the gray value is established by fitting the gray value of a plurality of pixel points and the corresponding temperature value.

Optionally, the infrared camera is connected to the terminal through a wireless network or a wired network. And a specified application program is operated on the terminal and is used for carrying out function setting on the infrared camera. For example, the designated application program provides a setting option for the association relationship, the user can operate on the terminal to set the association relationship, and the terminal responds to the setting operation of the association relationship by the user and sends a corresponding third instruction to the infrared camera, wherein the third instruction is used for triggering the infrared camera to acquire the corresponding association relationship and calculating the predicted temperature value of the first image based on the association relationship.

409. And the infrared camera sends a second moving instruction to the blackbody, and the second moving instruction is used for controlling the blackbody to cancel the shielding of the blackbody on the infrared lens by moving.

In the embodiment of the application, the blocking cancellation means that any light path of a shooting area is not blocked, so that the infrared lens can receive all infrared rays of a shooting object. Optionally, the infrared light is long-wave infrared light, and the wavelength of the infrared light is between 8 μm and 14 μm, and in some embodiments, the wavelength of the infrared light is between 6 μm and 15 μm, which is not limited in this application.

Optionally, the infrared camera is connected to the terminal through a wireless network or a wired network. And a specified application program is operated on the terminal and is used for carrying out function setting on the infrared camera, namely setting the moving moment of black body shielding cancellation. For a specific implementation, please refer to step 405 above, which is not described herein again.

It should be noted that, with reference to step 405, a description is omitted in this embodiment of the present application for an alternative implementation that the infrared camera sends the second movement instruction to the black body.

410. And the black body receives a second moving instruction sent by the infrared camera, and the shielding of the black body on the infrared lens is cancelled by moving so that the infrared lens can receive the infrared light of the shooting object.

In the embodiment of the present application, with reference to the blackbody architecture shown in fig. 2, the following description is provided for a specific implementation of the step 410, and includes the following first step and second step:

and step one, the blackbody motor receives a second movement instruction sent by the infrared camera.

Optionally, the blackbody further includes a main control chip, and the main control chip of the blackbody receives a second movement instruction sent by the infrared camera and sends the second movement instruction to the motor of the blackbody.

And step two, the black body motor drives the black body blocking piece to be opened based on the second moving instruction, so that the blocking of the infrared lens is cancelled when the black body blocking piece is in an opened state.

Optionally, the black body barrier is opened in any one of the following manners: first, the black body motor can drive the black body blocking piece to be opened in a left-right pushing or up-down pushing mode in front of the infrared lens, and specifically, the opening mode of the curtain type shutter of the camera can be referred to. Secondly, a black body motor can drive a black body blocking piece to open in a mode of rotating and opening from the center to the edge in front of the infrared lens, and the opening mode of a rotary shutter of the camera can be referred to specifically. And thirdly, the motor of the black body can drive the black body blocking piece to open in a clockwise rotation or anticlockwise rotation mode in front of the infrared lens, and the folding mode of the folding fan can be specifically referred to. It should be understood that, referring to the closing manner of the black body blocking plate in step 406, in practical applications, the opening manner of the black body blocking plate is not limited to the three manners, but can be set in any movable manner, and the movable manner of the black body blocking plate is not limited in the embodiments of the present application.

It should be noted that, in some embodiments, the steps 405, 409 and 410 can be replaced by "the infrared camera sends a third moving instruction to the black body, where the third moving instruction is used to control the black body to completely block the infrared lens by moving, and after the blocking continues for more than the target time period, the blocking of the infrared lens is cancelled by moving". The third moving instruction carries time information, where the time information is used to indicate that the black body completely shields the infrared lens, and after the continuous shielding exceeds M seconds (M > 0), the shielding of the infrared lens by the black body is cancelled by moving, which is not limited in the embodiment of the present application. It should be understood that the specific implementation of the infrared camera and the black body in this case is the same as the above steps 405, 409, and 410, and therefore, the detailed description thereof is omitted here. Through the mode of automatically canceling the shielding, the transmission process of the instruction is reduced, and the temperature measurement efficiency can be improved to a certain extent.

411. The infrared camera images the shooting object based on the infrared lens to obtain a second image.

In the embodiment of the present application, the second image refers to an image (for example, a RAW image) generated by the infrared camera based on light received by the infrared lens without any obstruction of the infrared lens, that is, a RAW image of a photographic subject. Optionally, this step 411 is performed by an infrared detector in an infrared camera.

Optionally, a first pixel region imaged by the black body in the first image corresponds to a second pixel region in the second image, the second pixel region including a third pixel region imaged by the photographic subject in the second image. Illustratively, the second pixel region includes a third pixel region of the photographic subject imaged in the second image, which means that the second pixel region is greater than or equal to the third pixel region, in other words, the second pixel region at least completely covers the third pixel region. For example, if the first image is overlapped with the second image, the first pixel region can completely block the third pixel region, that is, in the third pixel region, each pixel point has a corresponding pixel point in the first image. Through the optional mode, the predicted temperature value corresponding to each pixel point in the imaging area corresponding to the shooting object can be corrected, and therefore the temperature measurement precision is effectively improved.

It should be noted that, in the embodiment of the present application, the above step 409 to step 411 are executed after step 408, in some embodiments, the infrared camera executes step 409 to step 411 first, and then executes step 408, and the execution sequence of step 408 is not limited in the embodiment of the present application.

412. The infrared camera corrects the predicted temperature value of the second image based on the predicted temperature value of the first image and the temperature value of the black body to obtain a target temperature value of the second image; the predicted temperature value of the second image is correlated with a gray value of the second image.

In the embodiment of the application, the infrared camera performs non-uniform correction and blind pixel compensation on the second image to obtain a corrected second image, then the infrared camera obtains an incidence relation between a predicted temperature value and a gray value, the incidence relation is applied, the predicted temperature value of the second image is obtained through calculation based on the gray value of the corrected second image, and therefore the predicted temperature value of the second image is corrected based on the predicted temperature value of the first image and the temperature value of the black body to obtain a target temperature value of the second image. Optionally, this step 412 is performed by a processing component in the infrared camera.

Optionally, this step 412 includes the following case one and case two:

in the first situation, the infrared camera corrects the predicted temperature value of the corresponding pixel point in the second image based on the predicted temperature value of each pixel point in the first image and the temperature value of the black body, so as to obtain the target temperature value of the corresponding pixel point in the second image.

The infrared camera calculates a predicted temperature value of each pixel point in the second image by applying the association relation, then calculates a temperature deviation value of each pixel point in the first image based on the predicted temperature value of each pixel point in the first image and the temperature value of the black body, corrects the predicted temperature value of the corresponding pixel point in the second image by taking the temperature deviation value as correction data, and obtains a target temperature value of the corresponding pixel point in the second image.

Through the temperature correction mode shown in the first condition, the infrared camera can correct the predicted temperature values of all the pixel points in the second image, so that the accurate target temperature value corresponding to the whole second image is obtained, and the temperature measurement precision is effectively improved.

The following describes a specific embodiment of case one, including the following steps one and two:

the method comprises the following steps that firstly, the infrared camera obtains a temperature deviation value of each pixel point in the first image based on a difference value between a predicted temperature value of each pixel point in the first image and a temperature value of the black body.

The infrared camera calculates a difference value between the predicted temperature value of each pixel point in the first image and the temperature value of the black body, and therefore a temperature deviation value of each pixel point in the first image is obtained.

Schematically, taking a certain pixel point a in the first image as an example, assume that the predicted temperature value of the pixel point a is T ₁ Temperature value of black body is T ₀ Then the temperature deviation value delta T of the pixel point A _A ＝T ₁ -T ₀ . It should be noted that the calculation of the temperature deviation value is only exemplary, and in some embodiments, the temperature deviation value of the pixel point a may also be represented as δ T _A ＝T ₀ -T ₁ The present embodiment is not limited to this.

And secondly, correcting the predicted temperature value of the corresponding pixel point in the second image by the infrared camera based on the temperature deviation value of each pixel point in the first image to obtain the target temperature value of the corresponding pixel point in the second image.

The infrared camera determines a predicted temperature value of a pixel point at the same position in the second image based on the position of each pixel point in the first image, and then corrects the predicted temperature value of a corresponding pixel point in the second image based on the temperature deviation value of each pixel point in the first image to obtain a target temperature value of the corresponding pixel point in the second image.

Schematically, the temperature deviation value δ T of a certain pixel point A in the first image is used _A ＝T ₁ -T ₀ For example, the infrared camera obtains correction data (A; δ T) based on the temperature deviation value _A ) The correction data is a two-dimensional array for indicating pixelsDeviation of temperature at point A is δ T _A Then, the infrared camera determines the predicted temperature value T of the corresponding pixel point A' in the second image based on the position of the pixel point A _A′ Temperature deviation value delta T based on pixel point A _A For predicted temperature value T of pixel point A _A′ Correcting to obtain target temperature value RT of the pixel point A _A′ ＝T _A′ -δT _A 。

Determining a first area in the first image by the infrared camera, wherein the range of the first area is smaller than that of the first image; and correcting the predicted temperature value of a second area in the second image based on the predicted temperature value of the pixel point in the first area in the first image and the temperature value of the black body to obtain a target temperature value corresponding to the second area in the second image, wherein the second area is an area where a shooting object in the second image is located, and the position of the first area in the first image is the same as the position of the second area in the second image.

The object to be photographed is an object to be measured in the photographing region. Alternatively, the photographic subject is a designated subject set in advance. For example, in a human body thermometry scene, a pedestrian in the shooting region is set as a shooting object. For another example, in a scenario involving monitoring of a motor vehicle, a vehicle that needs to be temperature monitored is set as a photographic subject, and the embodiment of the present application is not limited to the type of the photographic subject.

In case two, the infrared camera applies the above-mentioned association relationship to calculate a predicted temperature value of the second region in the second image, then the infrared camera determines the first region at the same position in the first image based on the position of the second region in the second image, calculates a temperature deviation value of the first region based on the predicted temperature value of the first region and the temperature value of the black body, and corrects the predicted temperature value of the second region to obtain a target temperature value corresponding to the second region by using the temperature deviation value as correction data.

Optionally, the infrared camera invokes an image recognition algorithm to perform image recognition on the second image, and determines a second area in the second image. For example, taking a pedestrian whose shooting object is a shooting area as an example, the infrared camera invokes a face recognition algorithm to perform face recognition on the second image, and determines a forehead area of a face in the second image as the second area, which is not limited in the embodiment of the present application.

Through the temperature correction mode shown in the second condition, the infrared camera can correct the predicted temperature value of the pixel point of the area where the shooting object is located in the second image, so that under the condition that the temperature of the shooting object is accurately measured, the calculated amount of data processing is reduced, and the temperature measurement efficiency is improved.

The following description of a specific embodiment of the second aspect includes the following first or second aspects:

in the first mode, the infrared camera corrects the predicted temperature value of the corresponding pixel point in the second area based on the predicted temperature value of each pixel point in the first area in the first image and the temperature value of the black body to obtain the target temperature value of the corresponding pixel point in the second area in the second image.

The infrared camera determines a first area in the first image based on the position of the second area in the second image, calculates a difference value between a predicted temperature value of each pixel point in the first area and a temperature value of a black body so as to obtain a temperature deviation value of each pixel point in the first area, and corrects the predicted temperature value of the corresponding pixel point in the second area based on the temperature deviation value of each pixel point in the first area so as to obtain a target temperature value of the corresponding pixel point in the second area. For a specific modification, reference may be made to the above description, and details are not repeated herein.

By the aid of the first mode, the infrared camera corrects the predicted temperature value of each pixel point of the area where the shooting object is located in the second image, and temperature measurement accuracy is further improved under the condition that the temperature of the shooting object is accurately measured.

And secondly, correcting the average predicted temperature value of the second area in the second image by the infrared camera based on the average predicted temperature value of the pixel point in the first area in the first image and the temperature value of the black body to obtain a target temperature value corresponding to the second area in the second image.

The infrared camera determines a first area in the first image based on the position of a second area in a second image, then calculates a difference value between an average predicted temperature value of a pixel point in the first area and a black body temperature value so as to obtain a temperature deviation value of the pixel point in the first area, and then corrects the average predicted temperature value of a corresponding pixel point in the second area based on the temperature deviation value of the pixel point in the first area so as to obtain a target temperature value of the corresponding pixel point in the second area.

Illustratively, taking the example that the second area includes 100 pixel points, the infrared camera applies the above-mentioned association relationship, and calculates the average predicted temperature value of the 100 pixel points as T _B′ Then, the infrared camera determines a first area in the first image, and calculates an average predicted temperature value T of 100 corresponding pixels in the first area _B And temperature value T of black body ₀ Difference value between the first and second areas, thereby obtaining the temperature deviation value delta T of the pixel point in the first area _B ＝T ₀ -T _B Then, based on the temperature deviation value, the infrared camera corrects the average predicted temperature value of 100 corresponding pixels in the second area to obtain a target temperature value RT corresponding to the second area _B′ ＝T _B′ -δT _B That is, the target temperature value of each pixel point in the second region is equal to RT _B′ 。

Optionally, the infrared camera may further divide the second area to obtain a plurality of second sub-areas, and then the infrared camera corrects the average predicted temperature values of the plurality of second sub-areas in the second image based on the average predicted temperature values of the pixel points in the plurality of first sub-areas in the first image and the blackbody temperature value to obtain target temperature values corresponding to the plurality of second sub-areas in the second image.

Schematically, taking the example that the second area includes 100 pixel points, the infrared camera further divides the second area to obtain 10 second sub-areas, and each second sub-area includes 10 pixel points. The specific temperature correction manner is similar to the temperature correction manner not divided into the second region, and is not described herein again.

By the second mode, the average predicted temperature value of the pixel point of the area where the shooting object is located in the second image is corrected by the infrared camera, under the condition that the temperature of the shooting object is accurately measured, the calculated amount of data processing is further reduced, and the temperature measurement efficiency is improved.

It should be understood that, based on the above step 405 and step 406, in some embodiments, the black body receives the first moving instruction sent by the infrared camera, and the infrared lens is shielded, so that the infrared lens can receive part of the infrared light of the shooting object, that is, in this case, a non-blackbody region exists in the first image obtained by the infrared camera, and therefore, the infrared camera determines a corresponding target region in the second image based on the position of the region where the black body is located in the first image, so that the infrared camera corrects the predicted temperature value of the target region in the second image based on the predicted temperature value of the region where the black body is located in the first image and the temperature value of the black body, which is not limited in this embodiment of the present application. It should be noted that, in consideration of the fact that in practical applications, the photographic subject usually appears in the center of the photographic area, with this alternative embodiment, it is possible to reduce the amount of data processing calculations and improve the temperature measurement efficiency while ensuring that the temperature of the photographic subject is accurately measured.

In addition, in the infrared temperature measurement method, the infrared camera is shielded or not shielded by a movable black body, so that full-pixel temperature correction of the image corresponding to the shot object is realized, the influence of non-uniformity of the response rate of the infrared detector on the temperature measurement precision is eliminated, the temperature measurement precision is improved, the correction work of the response rate is reduced, the precision requirement of the infrared camera on the calibration of the response rate is also reduced, and the production efficiency of the infrared camera is improved. Furthermore, the infrared temperature measurement system in the above embodiment has a compact structure, which is beneficial to system integration.

In summary, in the infrared temperature measurement method provided in the embodiment of the present application, the infrared camera obtains the first image of the black body and the corresponding predicted temperature value based on the shielding of the black body on the infrared lens, and then the infrared camera cancels the shielding of the infrared lens based on the black body to obtain the second image of the shooting object and the corresponding predicted temperature value, so that the infrared camera can correct the predicted temperature value of the second image according to the predicted temperature value of the first image and the temperature value of the black body. In the temperature measurement mode, the pixel area imaged by the black body corresponds to the pixel area imaged by the shooting object, so that the influence of the non-uniformity of the response rate of the infrared detector on the temperature measurement precision can be eliminated, and the temperature measurement precision is effectively improved.

The infrared temperature measurement method provided by the embodiment of the present application is described in detail above with reference to the embodiment shown in fig. 4, and the infrared temperature measurement system and the infrared temperature measurement method are exemplified below with reference to fig. 5 and fig. 6 by taking a human body temperature measurement scene as an example. Fig. 5 is a schematic diagram of an infrared temperature measurement system provided in an embodiment of the present application, and fig. 6 is a flowchart of an infrared temperature measurement method provided in an embodiment of the present application.

As shown in fig. 5, the infrared temperature measurement system 500 includes: the black body 501 is connected with the infrared camera 502, and the first controller 503 is respectively connected with the infrared camera 502 and the first display 504.

In the infrared temperature measurement system 500, the black body 501 and the infrared camera 502 function in the same way as the infrared temperature measurement system 100 shown in fig. 1.

The infrared camera 502 is further configured to send the second image and the target temperature value of the second image to the first controller.

A first controller 503, configured to generate temperature information of the second image based on the received second image and a target temperature value of the second image, and send the temperature information of the second image to the first display 504.

And the first display screen 504 is used for displaying the second image marked with the temperature information based on the received temperature information of the second image.

As shown in fig. 6, the infrared temperature measurement method is applied to the infrared temperature measurement system 500 shown in fig. 5, and the method includes the following steps:

601. the first controller responds to the temperature measurement starting instruction and controls the infrared camera to measure the temperature.

In the embodiment of the present application, the first controller is a main control chip, and is configured to control starting or stopping of various functions in the infrared temperature measurement system.

602. The infrared camera controls the temperature value of the black body to be in the target temperature range, and the temperature value of the black body is obtained.

603. The infrared camera controls the black body to completely shield the infrared lens of the infrared camera through movement, and the black body is imaged based on the infrared lens shielded by the black body to obtain a first image.

604. The infrared camera controls the black body to cancel the shielding of the black body on the infrared lens through movement, and images a shot object based on the infrared lens to obtain a second image.

605. And the infrared camera corrects the predicted temperature value of the second image based on the predicted temperature value of the first image and the temperature value of the black body to obtain a target temperature value of the second image.

It should be noted that, for the specific implementation of the steps 602 to 605, reference is made to the steps 401 to 412, and details of the embodiment of the present application are not described herein again.

606. The infrared camera sends the second image and the target temperature value of the second image to the first controller.

607. The first controller generates temperature information of the second image based on the received second image and a target temperature value of the second image, and transmits the temperature information of the second image to the first display screen.

In the embodiment of the application, the first controller generates temperature information corresponding to the shooting object based on the area where the shooting object is located in the second image, and sends the temperature information of the second image to the first display screen.

Alternatively, in the scenario where the infrared camera obtains the target temperature value of the second temperature in the method shown in case one of step 411 above: the first controller calls a face recognition algorithm to perform face recognition on the second image, the area where the face forehead is located in the second image is recognized, taking any face forehead area as an example, the first controller determines a target temperature value of each pixel point in the face forehead area, and generates temperature information corresponding to the face forehead area based on the target temperature value of each pixel point in the face forehead area. For example, the first controller calculates an average target temperature value of each pixel point in the forehead area of the human face, and generates temperature information corresponding to the forehead area of the human face based on the average target temperature value, which is not limited in this embodiment of the present application.

Through the optional implementation mode, the first controller only processes the target temperature value of the area where the forehead of the human face is located by carrying out face recognition on the second image, so that the temperature of the shot object is accurately measured, and the temperature measurement precision is improved.

Optionally, in a scenario that the infrared camera obtains the target temperature value of the second temperature by the method shown in the case two in the above step 411: taking any one of the second areas as an example, the first controller generates temperature information of the second area based on a target temperature value corresponding to the second area.

Through the optional implementation mode, the first controller directly generates the temperature information of the second image based on the received target temperature value of the second image, so that the calculation amount of data processing is greatly reduced, and the temperature measurement efficiency is improved under the condition of ensuring that the temperature of the shooting object is accurately measured.

608. The first display screen displays the second image marked with the temperature information based on the received temperature information corresponding to the second image.

In the embodiment of the application, the first display screen displays the second image marked with the temperature information based on the OSD technology. Schematically, a second image is displayed on the first display screen, and temperature information of each pedestrian is marked above the forehead of the pedestrian in the second image.

Optionally, the first controller performs step 607, and at the same time, determines the temperature information of the second image, and if the temperature information is higher than the preset temperature, the first controller sends an alarm and automatically saves the image containing the temperature information. The manner in which the first controller issues the alarm is not limited in this application.

In the infrared temperature measurement method provided by the embodiment of the application, the infrared camera obtains a first image of the black body and a corresponding predicted temperature value based on the shielding of the black body on the infrared lens, and then the infrared camera cancels the shielding of the infrared lens based on the black body to obtain a second image of a shooting object and a corresponding predicted temperature value, so that the infrared camera can correct the predicted temperature value of the second image according to the predicted temperature value of the first image and the temperature value of the black body. In the temperature measurement mode, the pixel area of the black body imaging corresponds to the pixel area of the shooting object imaging, so that the influence of the non-uniformity of the response rate of the infrared detector on the temperature measurement precision can be eliminated, the temperature measurement precision is effectively improved, high-precision human body temperature data can be obtained, the precision can reach +/-0.2 ℃, further, the temperature information is displayed on a display screen, and the visual temperature monitoring is realized.

In the above, an application scenario of the infrared temperature measurement method provided in the embodiment of the present application is explained in detail through the embodiments shown in fig. 5 and fig. 6, and with reference to fig. 7 and fig. 8, a human body temperature measurement scenario is taken as an example to continue to illustrate another infrared temperature measurement system and another infrared temperature measurement method. Fig. 7 is a schematic diagram of an infrared temperature measurement system provided in the embodiment of the present application, and fig. 8 is a flowchart of an infrared temperature measurement method provided in the embodiment of the present application.

First, as shown in fig. 7, the infrared temperature measurement system 700 includes: the black body 701 is connected with the infrared camera 702, and the second controller 704 is respectively connected with the infrared camera 702, the visible light camera 703 and the second display 705.

In the infrared temperature measurement system 700, the black body 701 and the infrared camera 702 function in the same manner as the infrared temperature measurement system 500 shown in fig. 5.

The infrared camera 702 is configured to send the second image and the target temperature value of the second image to the second controller 704.

The visible light camera 703 is configured to image a shooting object to obtain a third image, and send the third image to the second controller 704.

A second controller 704 for generating temperature information of the second image and temperature information of the third image based on the received second image, target temperature value of the second image, and the third image, and transmitting the temperature information of the second image and the temperature information of the third image to the second display screen 705.

And a second display 705 for displaying the third image labeled with the temperature information based on the received temperature information of the second image and the temperature information of the third image, or simultaneously displaying the second image labeled with the temperature information and the third image labeled with the temperature information.

Next, as shown in fig. 8, the infrared temperature measurement method is applied to the infrared temperature measurement system 700 shown in fig. 7, and the method includes the following steps:

801. the second controller responds to the temperature measurement starting instruction and controls the infrared camera to measure the temperature.

In this application embodiment, the second controller is a main control chip and is configured to control starting or stopping of various functions in the infrared temperature measurement system.

802. The second controller responds to the temperature measurement starting instruction and controls the visible light camera to image the shooting object.

It should be noted that, in some embodiments, the second controller executes the above step 801 and step 802 synchronously, and in other embodiments, the second controller executes the above step 802 first and then executes the step 801, which is not limited in this embodiment of the present application.

803. And controlling the temperature value of the black body to be in a target temperature interval by the infrared camera to obtain the temperature value of the black body.

804. The infrared camera controls the black body to completely shield the infrared lens of the infrared camera through movement, and the black body is imaged based on the infrared lens shielded by the black body to obtain a first image.

805. The infrared camera controls the black body to cancel the shielding of the black body on the infrared lens through movement, and images a shooting object based on the infrared lens to obtain a second image.

806. And the infrared camera corrects the predicted temperature value of the second image based on the predicted temperature value of the first image and the temperature value of the black body to obtain a target temperature value of the second image.

It should be noted that, for the specific implementation of the above step 803 to step 806, refer to the above step 401 to step 412, and the description of the embodiment of the present application is omitted here.

807. The infrared camera sends the second image and the target temperature value of the second image to the first controller.

808. The visible light camera images a shooting object to obtain a third image, and the third image is sent to the second controller.

In the embodiment of the present application, the third image refers to a RAW image directly generated by the visible light camera based on the visible light rays received by the visible light lens.

It should be noted that the step 808 is executed synchronously with the steps 803 to 807.

809. The second controller generates temperature information of the second image and temperature information of the third image based on the received second image, the target temperature value of the second image and the third image, and transmits the temperature information of the second image and the temperature information of the third image to the second display screen.

In the embodiment of the application, the second controller performs registration through image features based on the received second image and the third image, so that the photographic objects in the second image and the third image correspond to each other one by one. And then the second controller generates temperature information corresponding to the shooting object based on the area of the shooting object in the second image, and sends the temperature information of the second image and the temperature information of the third image to the second display screen.

Optionally, in a scenario where the infrared camera obtains the target temperature value of the second temperature by using the method shown in the first or second condition in step 412, reference is made to step 607 in a manner that the first controller obtains the target temperature value of the second temperature, which is not described herein again in this embodiment of the present application. The difference is that in this step 809, the first controller may recognize the region where the forehead of the human face is located based on the second image, or may recognize the region where the forehead of the human face is located based on the third image, which is not limited in this embodiment of the application.

810. The first display screen displays the third image labeled with the temperature information based on the received temperature information of the second image and the temperature information of the third image, or simultaneously displays the second image labeled with the temperature information and the third image labeled with the temperature information.

In this embodiment of the present application, the second display screen displays the third image labeled with the temperature information based on the OSD technology, or the second display screen displays the second image labeled with the temperature information and the third image labeled with the temperature information based on the OSD technology at the same time, or the second display screen displays the second image labeled with the temperature information based on the OSD technology, which is not limited in this embodiment of the present application.

Optionally, a configuration interface is displayed on the second display screen, and the configuration interface is used for providing a setting function of image display, and a user can set a display image of the second display screen through an operation on the configuration interface, which is not limited in this embodiment of the present application.

Optionally, the second controller performs step 809 and determines temperature information of the second image or the third information, and if the temperature information is higher than the preset temperature, the second controller sends an alarm and automatically saves the image containing the temperature information. The manner in which the second controller issues the alarm is not limited in this application.

In the infrared temperature measurement method provided by the embodiment of the application, the infrared camera obtains a first image of the black body and a corresponding predicted temperature value based on the shielding of the black body on the infrared lens, and then the infrared camera cancels the shielding of the infrared lens based on the black body to obtain a second image of a shooting object and a corresponding predicted temperature value, so that the infrared camera can correct the predicted temperature value of the second image according to the predicted temperature value of the first image and the temperature value of the black body. In the temperature measurement mode, the pixel area of the black body imaging corresponds to the pixel area of the shooting object imaging, so that the influence of the non-uniformity of the response rate of the infrared detector on the temperature measurement precision can be eliminated, the temperature measurement precision is effectively improved, high-precision human body temperature data can be obtained, the precision can reach +/-0.2 ℃, further, the temperature information is displayed on a display screen, and the personalized visual temperature monitoring is realized.

Fig. 9 is a schematic structural diagram of an infrared thermometry apparatus 900 according to an embodiment of the present application, where the infrared thermometry apparatus 900 may generate a relatively large difference due to different configurations or performances, and includes one or more processors 901 and one or more memories 902, where the memory 902 stores at least one program code, and the at least one program code is loaded and executed by the processors 901 to implement the operations performed by the infrared cameras in the above method embodiments. Certainly, the infrared temperature measuring device 900 can also have components such as a wired or wireless network interface, a keyboard, an input/output interface, and the like so as to perform input/output, and the infrared temperature measuring device 900 further includes other components for realizing the functions of the device, which are not described herein again.

In an exemplary embodiment, there is also provided a computer readable storage medium, such as a memory including program code, which is executable by a processor in a terminal to perform the infrared thermometry method in the above embodiments. For example, the computer-readable storage medium is a read-only memory (ROM), a Random Access Memory (RAM), a compact disc-read-only memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, and the like.

In an exemplary embodiment, a computer program product or a computer program is also provided, which comprises program code which, when run on an infrared thermometry apparatus, causes the infrared thermometry apparatus to perform the infrared thermometry method provided in the above-mentioned embodiments.

The terms "first," "second," and the like in this application are used for distinguishing between similar items and items that have substantially the same function or similar functionality, and it should be understood that "first," "second," and "nth" do not have any logical or temporal dependency or limitation on the number or order of execution. It will be further understood that, although the following description uses the terms first, second, etc. to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first image may be referred to as a second image, and similarly, a second image may be referred to as a first image, without departing from the scope of the various described examples. Both the first image and the second image may be images, and in some cases, may be separate and distinct images.

The term "at least one" in this application means one or more, and the term "a plurality" in this application means two or more, for example, a plurality of pixels means two or more pixels.

It is also understood that the term "if" may be interpreted to mean "when" ("where" or "upon") or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined." or "if [ a stated condition or event ] is detected" may be interpreted to mean "upon determining.. Or" in response to determining. "or" upon detecting [ a stated condition or event ] or "in response to detecting [ a stated condition or event ]" depending on the context.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An infrared temperature measurement system, characterized in that, the system includes black body and infrared camera, wherein:

the black body is used for moving under the control of the infrared camera;

the infrared camera is used for:

acquiring a temperature value of the black body;

the black body is controlled to shield an infrared lens of the infrared camera through movement, and a first image is obtained based on the imaging of the black body by the infrared lens shielded by the black body;

correcting the predicted temperature value of the second image based on the predicted temperature value of the first image and the temperature value of the black body to obtain a target temperature value of the second image; the predicted temperature value of the first image is correlated with the gray value of the first image, and the predicted temperature value of the second image is correlated with the gray value of the second image.

2. The system of claim 1, wherein the controlling the black body to obscure an infrared lens of the infrared camera by moving comprises: and controlling the black body to completely shield the infrared lens by moving so that the infrared lens cannot receive the infrared light of the shooting object.

3. The system of claim 1 or 2, wherein a first pixel region of the black body imaged in the first image corresponds to a second pixel region of the second image, the second pixel region comprising a third pixel region of the photographic subject imaged in the second image.

4. The system of any one of claims 1 to 3, wherein the modifying the predicted temperature value of the second image based on the predicted temperature value of the first image and the temperature value of the black body to obtain the target temperature of the second image comprises any one of:

(2) Determining a first region in the first image, the range of the first region being smaller than the range of the first image; and correcting the predicted temperature value of a second area in the second image based on the predicted temperature value of the pixel point in the first area in the first image and the temperature value of the black body to obtain a target temperature value corresponding to the second area in the second image, wherein the second area is the area where the shooting object is located, and the position of the first area in the first image is the same as the position of the second area in the second image.

5. The system according to claim 4, wherein the correcting the predicted temperature value of the second region in the second image based on the predicted temperature value of the pixel point in the first region in the first image and the temperature value of the black body to obtain the target temperature value corresponding to the second region in the second image comprises any one of:

6. The system according to claim 4 or 5, wherein the correcting the predicted temperature value of the corresponding pixel point in the second image based on the predicted temperature value of each pixel point in the first image and the temperature value of the black body to obtain the target temperature value of the corresponding pixel point in the second image comprises:

7. The system of any one of claims 1 to 6, wherein the black body comprises a motor, a black body baffle, a temperature sensor and a temperature controller;

the black body separation blade is used for: completely shielding the infrared lens in a closed state;

the temperature controller is configured to: and receiving control of the infrared camera, and based on the temperature value of the black body, carrying out temperature control on the black body so as to enable the temperature value of the black body to be in a target temperature interval.

8. The system of claim 7, wherein a surface of the black body blocking piece facing the infrared lens is covered with a black body coating, a surface of the black body blocking piece facing the photographic object is provided with a semiconductor refrigeration piece, and the semiconductor refrigeration piece is used for: and receiving the control of the temperature controller to enable the temperature value of the black body to be in the target temperature interval.

9. An infrared temperature measurement method is characterized in that the method is applied to an infrared temperature measurement system, and the infrared temperature measurement system comprises: a black body and infrared camera, the method comprising:

the infrared camera acquires the temperature value of the black body;

the infrared camera controls the black body to cancel the shielding of the black body on the infrared lens through movement, and images a shot object based on the infrared lens to obtain a second image;

the infrared camera corrects the predicted temperature value of the second image based on the predicted temperature value of the first image and the temperature value of the black body to obtain a target temperature value of the second image; the predicted temperature value of the first image is correlated with the gray value of the first image, and the predicted temperature value of the second image is correlated with the gray value of the second image.

10. The method of claim 9, wherein the controlling the black body to obscure an infrared lens of the infrared camera by moving comprises: and controlling the black body to completely shield the infrared lens by moving so that the infrared lens cannot receive the infrared light of the shooting object.

11. The method according to claim 9 or 10, wherein a first pixel region of the black body imaged in the first image corresponds to a second pixel region of the second image, the second pixel region comprising a third pixel region of the photographic subject imaged in the second image.

12. The method according to any one of claims 9 to 11, wherein said modifying the predicted temperature value of the second image based on the predicted temperature value of the first image and the temperature value of the black body to obtain the target temperature of the second image comprises any one of:

13. The method according to claim 12, wherein the correcting the predicted temperature value of the second region in the second image based on the predicted temperature value of the pixel point in the first region in the first image and the temperature value of the black body to obtain the target temperature value corresponding to the second region in the second image comprises any one of:

14. The method according to claim 12 or 13, wherein the correcting the predicted temperature value of the corresponding pixel point in the second image based on the predicted temperature value of each pixel point in the first image and the temperature value of the black body to obtain the target temperature value of the corresponding pixel point in the second image comprises:

15. The method of any one of claims 9 to 14, wherein the black body comprises a motor, a black body baffle, a temperature sensor and a temperature controller;

the black body baffle is used for: completely shielding the infrared lens when the black body blocking piece is in a closed state;

16. The method according to claim 15, wherein a surface of the black body blocking piece facing the infrared lens is covered with a black body paint, and a surface of the black body blocking piece facing the photographic object is provided with a semiconductor refrigeration piece for: and receiving the control of the temperature controller to enable the temperature value of the black body to be in the target temperature interval.

17. An infrared thermometry apparatus comprising a processor and a memory, said memory storing at least one piece of program code, said at least one piece of program code being loaded by said processor and executing the infrared thermometry method according to any one of claims 9 to 16.

18. A computer-readable storage medium for storing at least one program code for performing the infrared thermometry method of any one of claims 9-16.