Thermography camera control method and thermography camera control device

Abstract

This thermographic camera control method includes: a step of correcting the display temperature of a temperature distribution image, periodically with a first interval; and a step of using the thermographic camera to capture an image of a temperature measurement target, periodically with a second interval, to acquire the temperature distribution image. The step of acquiring the temperature distribution image includes capturing the image of the temperature distribution image after a waiting time shorter than the second interval has elapsed from the start of the step of correcting the display temperature.

Description

[Technical field]

[0001] The present disclosure relates to a control method for a thermographic camera and a control device for a thermographic camera. [Background technology]

[0002] In a camera for visualizing infrared rays emitted from an object, such as a thermography camera, the displayed temperature of the acquired temperature distribution image may shift over time. For this reason, a method for correcting the displayed temperature is known.

[0003] For example, Patent Document 1 discloses an infrared imaging device to be mounted on a moving body. The infrared imaging device described in Patent Document 1 controls the timing for determining a correction coefficient based on at least one of a speed of the moving body, a signal of a traffic light in the moving direction of the moving body, and the presence or absence of a detection target in the moving direction of the moving body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-96752 A Summary of the Invention

[0005] The infrared imaging device described in Patent Document 1 still has room for improvement in terms of capturing a temperature distribution image with improved reliability.

[0006] Therefore, the present disclosure provides a control method for a thermography camera and a control device for a thermography camera that are capable of capturing a temperature distribution image with improved reliability.

[0007] According to one aspect of the present disclosure Take images periodically How to control a thermography camera , Zhou periodically correcting the display temperature of the temperature distribution image; Imaging time interval N secondsand periodically capturing an image of the temperature measurement target with a thermographic camera to obtain a temperature distribution image.

[0008] The step of acquiring a temperature distribution image starts after the step of correcting the display temperature. The time it takes for the displayed temperature to stabilize Waiting time k seconds After the elapse of time, the temperature measurement target is photographed. The waiting time k seconds is shorter than the imaging time interval N seconds, The step of correcting the display temperature includes correcting the display temperature after waiting for Nk seconds from when the temperature measurement target is imaged. The Company has the right to do so.

[0009] A control device for a thermographic camera according to an embodiment of the present disclosure includes: Periodically A control device for a thermography camera having an image pickup element for capturing an image of a temperature distribution. , Zhou a correction control unit that periodically corrects a display temperature of the temperature distribution image; Imaging interval N seconds and an imaging control unit that causes the imaging element to capture an image of the object to be measured.

[0010] The imaging control unit starts correcting the display temperature by the correction control unit. The time it takes for the displayed temperature to stabilize Waiting time k seconds After the elapse of time, the image sensor captures the object to be measured. The waiting time k seconds is shorter than the image capturing time interval N seconds, and the correction control unit waits until Nk seconds have elapsed since the image capturing, and starts correcting the display temperature after waiting for Nk seconds. .

[0013] According to the present disclosure, it is possible to provide a thermography camera control method and a thermography camera control device that are capable of capturing a temperature distribution image with improved reliability. [Brief description of the drawings]

[0014] [Figure 1] 1 is a block diagram illustrating a schematic diagram of a control device of a thermography camera according to a first embodiment of the present disclosure. [Figure 2A] FIG. 2 is a diagram showing a tablet equipped with the control device of FIG. 1; [Figure 2B] FIG. 2B is a diagram showing a display section of the tablet in FIG. 2A. [Diagram 3]FIG. 3 is an enlarged view of the thermography camera disposed on the tablet of FIG. 2. [Figure 4] 13 is a graph showing the display temperature of a temperature distribution image captured by a thermographic camera when the display temperature is not corrected. [Figure 5A] 13 is a graph showing the display temperature of a temperature distribution image captured by a thermographic camera when periodic correction is performed. [Figure 5B] 5B is a graph showing the temperature when an image of the temperature measurement target in FIG. 5A is captured during a time other than standby. [Figure 6] FIG. 13 is a diagram for explaining a method for determining a waiting time of k seconds. [Figure 7] 5 is a flowchart showing a control method for the thermographic camera in the control device. [Figure 8] 5 is a flowchart showing a control operation of the thermographic camera in the control device. [Figure 9] 11 is a graph showing an example of the relationship between correction and imaging in an interval imaging mode. [Figure 10] 10 is a flowchart showing a control method for a thermography camera according to a second embodiment. [Figure 11] 11A and 11B are diagrams illustrating an example of a temperature distribution image displayed on a display unit. [Figure 12] 13 is a flowchart showing a control method for a thermography camera according to a third embodiment. [Figure 13] 13 is a flowchart showing a control method for a thermography camera according to a fourth embodiment. [Figure 14] FIG. 13 is a block diagram showing a control device of a thermography camera according to a fifth embodiment. [Figure 15] 15 is a flowchart showing a method of controlling the thermography camera of FIG. 14. [Figure 16] 13 is a flowchart showing a control method for a thermography camera according to a sixth embodiment. [Figure 17] FIG. 1 is a diagram showing an image captured by a thermography camera. [Figure 18]13 is a flowchart showing a control method for a thermography camera according to a seventh embodiment. [Figure 19] 13 is a diagram showing an example of information related to the execution of imaging output to a display unit. FIG. [Figure 20] 13 is a flowchart showing a control method for a thermography camera according to an eighth embodiment. [Figure 21] 13 is a flowchart showing a control method for a thermography camera according to a ninth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] (Background to this disclosure) In a thermography camera, the displayed temperature of the acquired temperature distribution image (thermogram) becomes misaligned over time. For this reason, the thermography camera can acquire a highly accurate temperature distribution image by periodically correcting the displayed temperature.

[0016] However, a sudden change in the display temperature occurs during and immediately after the temperature correction, which poses a problem that a correct temperature distribution image cannot be obtained if an image is captured during or immediately after the temperature correction.

[0017] For example, in an interval imaging mode where a thermographic camera periodically captures images, if images are captured at a predetermined time interval and the display temperature is corrected at the predetermined time interval, the timing of capturing images and the timing of correcting the display temperature may overlap. In this case, the image is captured during the correction or when a sudden temperature change occurs immediately after the correction, which reduces the reliability of the temperature distribution image.

[0018] In addition, in the manual imaging mode in which an image is captured at a timing of the user's choice, the display temperature is corrected at a predetermined time interval. In the manual imaging mode, the image capturing timing is determined by the user, so the image capturing timing and the display temperature correction timing may overlap. In this case, too, the image is captured at the timing when a sudden temperature change occurs immediately after the correction, which reduces the reliability of the temperature distribution image.

[0019] Therefore, the present inventors have investigated how to obtain a correct temperature distribution image by controlling the timing of imaging in the interval imaging mode, or how to notify a user that temperature correction is being performed in the manual imaging mode, and have arrived at the following invention.

[0020] 1. A method for controlling a thermographic camera, comprising: periodically correcting a display temperature of the temperature distribution image at a predetermined interval; and acquiring a temperature distribution image by periodically capturing an image of the temperature measurement target at a predetermined capturing time interval. The step of acquiring the temperature distribution image includes capturing an image of the temperature measurement target after a predetermined waiting time, which is shorter than the predetermined image capturing time interval, has elapsed since the start of the correction.

[0021] According to this configuration, it is possible to perform imaging of a temperature distribution image with improved reliability.

[0022] The predetermined waiting time may be determined based on the display temperature of the temperature distribution image before the display temperature is corrected.

[0023] With this configuration, an appropriate waiting time can be set.

[0024] The thermographic camera includes an image sensor and a shutter disposed on the side of the image sensor toward a temperature measurement target. The step of correcting the displayed temperature may be performed by closing the shutter and imaging the shutter.

[0025] According to this configuration, the display temperature can be corrected for each pixel.

[0026] The control method may further include a step of, when the correction is being executed, displaying information indicating that the correction is being executed on a display unit that displays the acquired temperature distribution image.

[0027] According to this configuration, it is possible to notify the user that correction is being performed.

[0028] The method may further include a step of changing the predetermined waiting time based on the display temperature of the temperature distribution image.

[0029] According to this configuration, by changing the waiting time depending on the display temperature of the temperature distribution image, it is possible to change the timing of correction when there is a sudden change in temperature, and thereby obtain a more accurate temperature distribution image.

[0030] The step of changing the predetermined waiting time may include shortening the predetermined waiting time when a change in display temperature of the temperature distribution image exceeds a predetermined range.

[0031] According to this configuration, by changing the waiting time in response to a sudden change in the display temperature of the temperature distribution image, a more accurate temperature distribution image can be obtained.

[0032] The method may further include changing the predetermined image capturing time interval based on the display temperature of the temperature distribution image.

[0033] According to this configuration, when the display temperature of the temperature distribution image changes suddenly, the imaging frequency can be changed in accordance with the change in temperature.

[0034] The step of changing the predetermined image capturing time interval may include shortening the predetermined image capturing time interval when the display temperature of the temperature distribution image exceeds a predetermined threshold value.

[0035] According to this configuration, when the display temperature of the temperature distribution image changes suddenly due to the occurrence of an abnormality or the like, it is possible to increase the imaging frequency.

[0036] The method may further include a step of notifying warning information when the display temperature of the temperature distribution image exceeds a predetermined threshold.

[0037] According to this configuration, when the display temperature of the temperature distribution image exceeds the threshold value due to the occurrence of an abnormality or the like, it is possible to notify the user by an alarm or the like.

[0038] The predetermined waiting time may be greater than or equal to 10 seconds and less than or equal to 300 seconds.

[0039] According to this configuration, the correction waiting time can be set within a range that does not affect the image capture time interval.

[0040] A control device for a thermography camera according to one aspect of the present disclosure includes: A control device for a thermographic camera having an image pickup element that picks up an image of a temperature measurement target and acquires a temperature distribution image, a correction control unit that periodically corrects a display temperature of the temperature distribution image at a predetermined interval; an imaging control unit that causes the imaging element to capture an image of the temperature measurement target at a predetermined imaging time interval; The imaging control unit causes the imaging element to capture an image of the temperature measurement target after a predetermined waiting time, which is shorter than a predetermined imaging time interval, has elapsed since the correction control unit started the correction.

[0041] According to this configuration, it is possible to perform imaging of a temperature distribution image with improved reliability.

[0042] A method for controlling a thermographic camera according to one aspect of the present disclosure includes: 1. A method for controlling a thermographic camera, comprising: obtaining input information from a user; a step of periodically correcting a display temperature of the temperature distribution image at a predetermined correction time interval; A step of capturing an image of a temperature measurement target to obtain a temperature distribution image based on input information; and outputting information regarding the correction of the displayed temperature.

[0043] According to this configuration, it is possible to perform imaging of a temperature distribution image with improved reliability.

[0044] The step of outputting the information may include, when the correction is being executed, displaying first information indicating that the correction is being executed on a display unit that displays the temperature distribution image.

[0045] According to this configuration, since it is possible to notify the user that correction is being executed, it is possible to avoid capturing an image while correction is being executed.

[0046] The first information may include an indicator indicating a time remaining until the correction is completed.

[0047] According to this configuration, the time remaining until the correction is completed can be visually recognized.

[0048] The step of outputting information may include, when a temperature distribution image is acquired by imaging while the correction is being performed, adding second information to the acquired temperature distribution image indicating that the image was acquired while the correction was being performed.

[0049] According to this configuration, it is possible to recognize that an image has been captured while correction is being performed, and therefore it is possible to easily distinguish whether the temperature change is due to correction or an abnormality.

[0050] The step of outputting information includes outputting information related to the execution of imaging when the input information is received during the execution of the correction; The step of acquiring the temperature distribution image may include controlling the execution of imaging based on imaging execution information inputted in response to the information relating to the execution of imaging.

[0051] According to this configuration, when input information instructing imaging is acquired during the execution of correction, it is possible to control the interruption or continuation of the acquisition process of the temperature distribution image.

[0052] The step of outputting the information may include outputting third information indicating that the correction is not being performed if the correction is not being performed.

[0053] According to this configuration, by showing the user that correction is not currently being performed, the user can easily recognize the appropriate timing for capturing an image.

[0054] The method may further include changing the predetermined correction time interval based on the display temperature of the temperature distribution image.

[0055] According to this configuration, an appropriate correction time interval can be set based on the display temperature of the temperature distribution image.

[0056] The step of changing the predetermined correction time interval may include shortening the predetermined correction time interval when the display temperature of the temperature distribution image exceeds a predetermined threshold value.

[0057] According to this configuration, when the display temperature of the temperature distribution image exceeds the threshold value due to the occurrence of an abnormality or the like, the correction time interval is shortened, making it possible to obtain a more accurate temperature distribution image.

[0058] A control device for a thermography camera according to one aspect of the present disclosure includes: A control device for a thermographic camera having an image pickup element that picks up an image of a temperature measurement target and acquires a temperature distribution image, a correction control unit that periodically corrects a display temperature of the temperature distribution image at a predetermined correction time interval; an imaging control unit that acquires input information input to the input unit and causes the imaging element to capture an image of the temperature measurement target based on the input information; and an output control unit that outputs information related to the correction of the display temperature.

[0059] According to this configuration, it is possible to perform imaging of a temperature distribution image with improved reliability.

[0060] Hereinafter, an embodiment will be described with reference to the drawings.

[0061] (Embodiment 1) [Overall configuration] Fig. 1 is a block diagram illustrating a control device 1 of a thermography camera 2 according to a first embodiment of the present disclosure. Fig. 2A is a diagram illustrating an external appearance of a tablet 100 including the control device 1 of Fig. 1. Fig. 2B is a diagram illustrating a display unit 3 of the tablet 100 of Fig. 2A. Fig. 3 is an enlarged view of the thermography camera 2 arranged on the tablet 100 of Fig. 2A.

[0062] As shown in Fig. 1, the control device 1 is a device that controls the thermographic camera 2. The control device 1 includes an imaging control unit 11 and a correction control unit 12. The thermographic camera 2 includes an imaging element 21 and a shutter 22. In this embodiment, the control device 1 and the thermographic camera 2 are mounted on a tablet 100 shown in Figs. 2A and 2B. The control device 1 also displays a captured temperature distribution image on the display unit 3 of the tablet 100 shown in Fig. 2B.

[0063] <Control device> The control device 1 controls the imaging of the temperature measurement target by the thermographic camera 2 and the correction of the display temperature. In this embodiment, the control device 1 executes control of an interval imaging mode in which the thermographic camera 2 periodically captures images at predetermined intervals. The display temperature is the display temperature in a temperature distribution image acquired by imaging the temperature measurement target by the thermographic camera 2. The control device 1 periodically corrects the display temperature.

[0064] The control device 1 includes an imaging control unit 11 and a correction control unit 12.

[0065] The imaging control unit 11 controls the imaging element 21 of the thermographic camera 2. Specifically, the imaging control unit 11 causes the imaging element 21 of the thermographic camera 2 to capture an image of a temperature measurement target (not shown) at a predetermined imaging time interval. As a result, a temperature distribution image is acquired. The acquired temperature distribution image is stored in a storage unit (not shown) of the control device 1. Note that the predetermined imaging time interval is an imaging cycle in the interval imaging mode, and is an example of the second interval. For example, if the imaging time interval is 10 minutes, the control device 1 causes the thermographic camera 2 to capture an image every 10 minutes when the interval imaging mode is started. The imaging time interval can be, for example, in the range of 1 minute to 180 minutes.

[0066] The imaging control unit 11 causes the imaging element 21 to capture an image of the temperature measurement target after a predetermined waiting time has elapsed since the correction control unit 12 started the correction. The temperature measurement target is an object whose temperature is to be measured by the thermographic camera 2. For example, by capturing images of a factory machine or the like as the temperature measurement target at intervals, it is possible to monitor changes in the display temperature of the temperature distribution image and discover abnormalities. The predetermined waiting time is shorter than the predetermined imaging time interval. The predetermined waiting time is determined by the correction control unit 12 based on the display temperature of the temperature distribution image before the display temperature of the temperature distribution image is corrected.

[0067] The correction control unit 12 corrects the display temperature of the temperature distribution image. The correction control unit 12 periodically corrects the display temperature of the temperature distribution image at a predetermined interval (an example of a first interval).

[0068] The control device 1 can be configured with, for example, a CPU, an MPU, a DSP, an FPGA, an ASIC, etc. The functions of the control device 1 may be configured with hardware only, or may be realized by combining hardware and software. The control device 1 realizes a predetermined function by reading data and programs stored in a storage area (not shown) in the control device 1 and performing various arithmetic processing. The control device 1 may be configured with a CPU mounted on an electronic device such as a PC or a tablet.

[0069] <Thermography camera> The thermography camera 2 acquires the surface temperature of a temperature measurement target and generates a temperature distribution image. For example, the thermography camera 2 is a camera that detects infrared energy radiated from a temperature measurement target and converts the detected amount of infrared energy into temperature to generate a temperature distribution image.

[0070] The thermography camera 2 includes an imaging element 21 and a shutter 22 .

[0071] The imaging element 21 captures an image of a temperature measurement target to obtain a temperature distribution image. For example, the imaging element 21 is an imaging element using an infrared sensor. The imaging element 21 can detect infrared rays emitted from the temperature measurement target and capture an image.

[0072] The shutter 22 is a mechanical shutter that blocks infrared rays from reaching the imaging element 21 except when imaging is being performed. The shutter 22 is disposed closer to the temperature measurement target side than the imaging element 21. In this embodiment, as will be described later, the shutter 22 also blocks infrared rays from reaching the imaging element 21 when performing temperature correction.

[0073] In this embodiment, as shown in Figures 2A and 3, a thermographic camera 2 is disposed on the rear surface (the surface opposite to the display unit 3) of the tablet 100. By disposing a thermographic camera on the rear surface of the tablet 100, it is possible to capture an image while checking the image on the display unit 3.

[0074] <Display> The display unit 3 is, for example, a display panel such as a liquid crystal display, and in this embodiment, is mounted on the tablet 100. A temperature distribution image captured by the thermography camera 2 can be displayed on the display unit 3.

[0075] <Display temperature correction> FIG. 4 is a graph showing the display temperature of the temperature distribution image by the thermographic camera 2 when the display temperature is not corrected. Even if the actual temperature of the temperature measurement target is constant, if the display temperature is not corrected, the detected display temperature of the temperature distribution image will gradually decrease. This is due to the influence of the sensitivity variation of each pixel of the image sensor 21 and the change in the environmental temperature. Note that, depending on the thermographic camera 2, the display temperature may gradually increase. Also, the degree of deviation differs from pixel to pixel, and a deviation of 5°C may occur in one pixel and a deviation of 10°C may occur in another pixel. For this reason, the control device 1 periodically corrects the display temperature of the temperature distribution image.

[0076] In this embodiment, the display temperature is corrected by periodically closing the shutter 22 and capturing an image of the shutter 22. This is because periodically closing the shutter 22 captures an image of the shutter surface at a uniform temperature and performs correction. By capturing an image of the shutter 22, it is possible to simultaneously correct the temperature deviation for each pixel. The correction of the display temperature is performed periodically, for example, at intervals of about 3 to 5 minutes.

[0077] FIG. 5A is a graph showing the display temperature of the temperature distribution image by the thermographic camera 2 when correction is performed periodically. FIG. 5B is a graph showing the display temperature of the temperature distribution image when the temperature measurement object of FIG. 5A is imaged at a time other than the standby time. In FIG. 5A, the first correction is started at time 0, and correction is started periodically every T seconds thereafter. As shown in FIG. 5A, the temperature rises suddenly temporarily immediately after the correction is started. After the start of the correction, when the standby time k seconds has elapsed, the display temperature of the temperature distribution image stabilizes. For this reason, in this embodiment, after the start of the correction, imaging is performed after a predetermined standby time k seconds has elapsed. As shown in FIG. 5B, when imaging is performed after the standby time k seconds has elapsed after the start of the correction, a temperature distribution image can be obtained without the sudden change in the display temperature in the graph of FIG. 5A.

[0078] The predetermined waiting time k seconds is determined in advance for each thermographic camera 2. The waiting time k seconds is determined based on the display temperature of the temperature distribution image before the display temperature is corrected. For example, the waiting time k seconds can be determined by capturing an image of a reference object having a constant surface temperature with the thermographic camera 2. For example, a blackbody furnace or the like can be used as the reference object. In other words, the reference object may be an object different from the object to be measured for temperature. FIG. 6 is a graph for explaining a method of determining the waiting time k seconds.

[0079] In FIG. 6, the average temperature x°C when the reference object is imaged from time 0 when the temperature measurement is started to time t1 when the correction is started is obtained by the thermographic camera 2. The average temperature x°C can be obtained, for example, by acquiring a plurality of temperature distribution images during the period up to time t1 when the correction is started, and calculating the average display temperature of each image. Next, the elapsed time from time t1 when the correction is executed to time t2 when the average temperature when the blackbody furnace is imaged falls within a predetermined range from the average temperature x°C before the correction is measured. The elapsed time from t1 to t2 is the waiting time k seconds. The predetermined range here is determined by the average temperature x°C or the characteristics of the thermographic camera 2, etc. The above steps are repeated to determine the optimal value of the waiting time k seconds.

[0080] [Control method] A method of controlling the thermographic camera 2 will be described with reference to Fig. 7. Fig. 7 is a flowchart illustrating a method of controlling the thermographic camera 2.

[0081] First, the imaging control unit 11 starts the interval imaging mode (step S101). The interval imaging is started based on, for example, an input from a user. In this embodiment, the predetermined imaging time interval of the interval imaging is described as N seconds.

[0082] When interval imaging is started, the correction control unit 12 corrects the display temperature of the temperature distribution image (step S102).

[0083] After the correction of the display temperature is started, the imaging control unit 11 captures an image of the temperature measurement target to obtain a temperature distribution image (step S103). In step S103, after a predetermined waiting time (k seconds) shorter than the predetermined imaging time interval (N seconds) has elapsed since the correction of the display temperature is started in step S102, the imaging control unit 11 captures an image of the temperature measurement target (step S104).

[0084] After capturing an image of the temperature measurement target and acquiring a temperature distribution image, the imaging control unit 11 judges whether or not to end the interval imaging mode (step S105). The imaging control unit 11 judges to end the interval imaging mode, for example, when a predetermined number of images have been captured, or when the user inputs an input to stop imaging. If the imaging control unit 11 judges not to end the interval imaging mode (No in step S105), the process returns to step S102 after Nk seconds have elapsed since the imaging in step S103, and correction of the display temperature is started again. If the imaging control unit 11 judges to end the interval imaging mode (Yes in step S105), the process ends.

[0085] In this way, in the interval imaging mode, the control method periodically corrects the display temperature of the temperature distribution image at a predetermined interval, and periodically images the temperature measurement target at a predetermined imaging time interval (N seconds) to obtain a temperature distribution image. Also, obtaining the temperature distribution image includes imaging the temperature measurement target after a predetermined waiting time (k seconds) shorter than the predetermined imaging time interval (N seconds) has elapsed since the start of the correction.

[0086] [Operation] The control operation of the thermographic camera 2 by the control device 1 will be described with reference to Fig. 8 and Fig. 9. Fig. 8 is a flowchart showing the control operation of the thermographic camera 2 in the control device 1. Fig. 9 is a graph showing an example of the relationship between correction and imaging in the interval imaging mode.

[0087] In this embodiment, the temperature distribution image is acquired periodically at a predetermined imaging time interval (every N seconds) in a so-called interval imaging mode. The predetermined waiting time from the start of correction is k seconds.

[0088] The interval imaging mode is started based on input information from the user (step S111). The input information from the user may include an imaging time interval, an imaging period, or the number of images to be captured. The input information is input, for example, via an input device (not shown) such as a touch panel, a keyboard, or a button of the tablet 100.

[0089] When the interval imaging starts, the correction control unit 12 starts correcting the display temperature (step S112). In this embodiment, as shown in FIG. 9, when the interval imaging mode starts, the correction starts at time c0. The correction of the display temperature is performed by closing the shutter 22 of the thermography camera 2 and capturing an image of the surface of the shutter 22 at a uniform temperature. When the shutter 22 is closed, the temperature variation of each pixel of the image sensor 21 is corrected. That is, after the image sensor 21 closes the shutter 22, the image sensor 21 captures the shutter 22 to obtain a temperature distribution image of the shutter 22. Here, the image sensor 11 periodically closes the shutter 22 at a predetermined interval, and the image sensor 21 captures the shutter 22. The temperature distribution image of the shutter 22 is considered to have a relatively uniform temperature distribution, unlike the temperature distribution image of the temperature measurement target outside the thermography camera 2. Therefore, the correction control unit 12 can automatically and appropriately correct the variation of each pixel of the imaging element 21 by periodically correcting the display temperature of the temperature distribution image of the temperature measurement target based on the temperature distribution image of the shutter 22.

[0090] The imaging control unit 11 waits until a standby time k seconds has elapsed since the correction of the display temperature was started (step S113). After the standby time k seconds has elapsed, the imaging control unit 11 controls the thermographic camera 2 to cause the imaging element 21 to capture an image of the temperature measurement target and obtain a temperature distribution image (step S114). As shown in Fig. 9, imaging is performed at time t0, k seconds after time c0.

[0091] The imaging control unit 11 determines whether or not to end the interval imaging (step S115). The end of the interval imaging is determined, for example, when input information for ending imaging is acquired by a user, when a predetermined number of temperature distribution images are acquired, or when the imaging end time set by a timer has arrived. When the imaging control unit 11 determines not to end the interval imaging (No in step S115), the correction control unit 12 waits until a time Nk seconds has elapsed since the imaging (step S116). After waiting for Nk seconds, the correction control unit 12 returns to step S112 and starts correcting the display temperature.

[0092] When the imaging control unit 11 determines that the interval imaging is to be ended (Yes in step S115), the process ends.

[0093] In the example of FIG. 9, when the interval imaging mode is started, correction of the display temperature is started at time c0. Then, after a waiting time of k seconds has elapsed since the start of the correction, imaging of the temperature measurement target is performed at time t0. Furthermore, after a waiting time of Nk seconds, a second correction is started. In this way, by performing imaging after a predetermined waiting time of k seconds has elapsed since the start of the correction, the timing of imaging and the timing of correction can be shifted. Note that, as shown in FIG. 9, in this embodiment, the predetermined interval for correcting the display temperature is N seconds, which is the same as the predetermined imaging time interval for imaging the temperature measurement target.

[0094] [effect] According to the above-described embodiment, it is possible to provide a thermography camera control method and a thermography camera control device that are capable of capturing a temperature distribution image with improved reliability.

[0095] By capturing an image after a waiting time of k seconds has elapsed since the start of correction of the display temperature, it is possible to avoid temperature fluctuations caused by the correction and obtain a more accurate temperature distribution image.

[0096] In the above embodiment, the control device 1 is mounted on the tablet 100, but the present invention is not limited to this. The control device 1 may be mounted on an information processing device other than a tablet. Alternatively, the control device 1 may be a control unit such as a CPU of the thermography camera 2.

[0097] In the above embodiment, an example has been described in which the thermographic camera 2 includes the shutter 22, but the shutter 22 is not an essential component. If the thermographic camera 2 does not include the shutter 22, the correction by the correction control unit 12 is performed by, for example, correcting the temperature blur for each pixel using a correction table relating to the display temperature and the environmental temperature of the temperature distribution image that is prepared in advance.

[0098] In the above embodiment, the standby time k seconds is determined by capturing an image of a blackbody furnace as a reference object, but the method of determining the standby time is not limited to this. The standby time may be determined by a method different from the above, depending on the camera characteristics or the correction method (shutter correction or shutterless correction). Alternatively, the standby time may be automatically determined from the temperature fluctuation during imaging.

[0099] (Embodiment 2) A second embodiment will be described with reference to Fig. 10 and Fig. 11. In the second embodiment, the same or equivalent configurations as those in the first embodiment will be denoted by the same reference numerals. In the second embodiment, descriptions that overlap with those in the first embodiment will be omitted.

[0100] Fig. 10 is a flowchart showing a method for controlling the thermographic camera 2 according to the second embodiment. Fig. 11 is a diagram showing an example of a temperature distribution image displayed on the display unit 3.

[0101] The second embodiment differs from the first embodiment in that it includes a step (step S123) in which the imaging control unit 11 displays information indicating that correction is being performed on the display unit 3 until a predetermined waiting time k seconds has elapsed since correction is started by the correction control unit 12. Note that steps S121 to S122 and steps S124 to S126 in Fig. 10 are the same as steps S101 to S102 and steps S103 to S105 in the first embodiment, and therefore description thereof will be omitted.

[0102] In step S123, when correction is being performed, information 33 indicating that "temperature correction is being performed" is displayed on the display unit 3 as shown in Fig. 11. When correction is being performed, this refers to the period from when correction control unit 12 starts correcting the display temperature in step S122 until the waiting time k seconds has elapsed.

[0103] The information 33 may be characters or symbols displayed on the display unit 3. Alternatively, the information 33 may be notified by sound or light. In the display unit 3 of FIG. 11, a temperature distribution image 31 taken by the thermographic camera 2 is displayed on the left side, and an image 32 taken by a visible light camera (not shown) is displayed on the right side. The display position of the information 33 may be on the image 32 as in FIG. 10, or on the temperature distribution image 31, or on both images 31 and 32. Only the temperature distribution image 31 may be displayed on the display unit 3.

[0104] The information 33 is displayed on the display unit 3 from the start of the correction in step S122 until the waiting time k seconds has elapsed.

[0105] [effect] According to the embodiment described above, by notifying the user that correction is being performed during the standby time k seconds after correction is started, it is possible to avoid imaging during the occurrence of a sudden change in temperature after correction is started, thereby making it possible to perform imaging with improved reliability of the temperature distribution image.

[0106] In the above embodiment, the information 33 is displayed on the display unit 3 for the standby time k seconds after the start of correction, but the present invention is not limited to this. For example, the information 33 may be displayed for more than the standby time k seconds after the start of correction.

[0107] (Embodiment 3) A third embodiment will be described with reference to Fig. 12. In the third embodiment, the same or equivalent configurations as those in the first embodiment will be denoted by the same reference numerals. In the third embodiment, descriptions that overlap with those in the first embodiment will be omitted.

[0108] FIG. 12 is a flowchart showing a method of controlling the thermography camera 2 according to the third embodiment.

[0109] In the third embodiment, the method further includes steps (steps S135 and S136) of changing the waiting time k based on the display temperature of the temperature distribution image when the imaging control unit 11 images the temperature measurement target and obtains the temperature distribution image. Note that steps S131 to S134 and step S137 are the same as steps S101 to S104 and step S105 in the first embodiment, and therefore description thereof will be omitted.

[0110] In step S135, the imaging control unit 11 judges whether the change in the display temperature of the temperature distribution image has exceeded a predetermined range. For example, the average value of the display temperature of the temperature measurement object shown in the temperature distribution image is calculated, and it can be judged that the change in the display temperature has exceeded the predetermined range because the change in the average value has exceeded the predetermined range. Alternatively, it can be judged that the change in the display temperature has exceeded the predetermined range because the average value of the display temperature of the temperature measurement object shown in the temperature distribution image for a certain period of time has exceeded the predetermined range. For the average value for the certain period of time, for example, the average value of the display temperature of a specific part of the temperature measurement object for the past one minute can be used. Instead of the average value, the maximum value, median value, or minimum value of the display temperature of the temperature measurement object shown in the temperature distribution image may be used. Alternatively, the display temperature of a specific part of the temperature measurement object shown in the temperature distribution image may be used. For example, when there has been a temperature change of 10° C. or more since the previous imaging, the imaging control unit 11 judges that the temperature change has exceeded the predetermined range. When it is judged that the temperature change has exceeded the predetermined range (Yes in step S135), the imaging control unit 11 shortens the waiting time k seconds (step S136).

[0111] The waiting time k seconds can be changed within the range of 10 seconds to 300 seconds.

[0112] [effect] According to the above-described embodiment, it is possible to perform imaging with improved reliability of the temperature distribution image. Also, since the time required for the rapid change in temperature after the start of correction to settle down may differ depending on the display temperature of the temperature distribution image, it is possible to obtain a more accurate temperature distribution image by changing the waiting time based on the change in the display temperature of the temperature distribution image.

[0113] In the above embodiment, the standby time k seconds is shortened, but the standby time k seconds may be lengthened when the temperature change exceeds a predetermined range.

[0114] (Embodiment 4) A fourth embodiment will be described with reference to Fig. 13. In the fourth embodiment, the same or equivalent configurations as those in the first embodiment will be denoted by the same reference numerals. In the fourth embodiment, descriptions that overlap with those in the first embodiment will be omitted.

[0115] FIG. 13 is a flowchart showing a method of controlling the thermography camera 2 according to the fourth embodiment.

[0116] The fourth embodiment differs from the first embodiment in that it further includes a step of changing the imaging time interval based on the display temperature of the temperature distribution image and a step of notifying warning information when the imaging control unit 11 images the temperature measurement target and obtains a temperature distribution image (steps S145 to S147). Note that steps S141 to S144 and step S149 are the same as steps S101 to S104 and step S105 in the first embodiment, and therefore description thereof will be omitted.

[0117] In step S145, the imaging control unit 11 judges whether the display temperature of the temperature distribution image exceeds a predetermined threshold. For example, the average value of the display temperature of the temperature measurement object shown in the temperature distribution image is calculated, and when the average value exceeds a predetermined threshold, it can be judged that the display temperature has exceeded the predetermined threshold. Or, when the average value of the display temperature of the temperature measurement object shown in the temperature distribution image for a certain period of time exceeds a threshold, it can be judged that the change in the display temperature has exceeded a predetermined range. For the average value for the certain period of time, for example, the average value of the display temperature of a specific part of the temperature measurement object for the past one minute can be used. Instead of the average value, the maximum value, median value, or minimum value of the display temperature of the temperature measurement object shown in the temperature distribution image may be used. Or, the display temperature of a specific part of the temperature measurement object shown in the temperature distribution image may be used. The predetermined threshold can be a value input by the user. Or, the predetermined threshold may be a value set in advance. The predetermined threshold can be, for example, 140°C. When the display temperature of the temperature distribution image becomes high, the thermographic camera 2 switches to high temperature mode and the temperature accuracy assurance temperature may be changed. Therefore, when the display temperature of the temperature distribution image exceeds the threshold and becomes high, the imaging control unit 11 shortens the imaging time interval of N seconds (step S146). In this way, by increasing the imaging frequency when the display temperature of the temperature distribution image exceeds a predetermined threshold, it is possible to obtain a more accurate temperature transition.

[0118] Furthermore, when the display temperature of the temperature distribution image exceeds a threshold and becomes high, the imaging control unit 11 notifies warning information (step S147). The warning information can be notified, for example, by displaying the warning information on the display unit 3. The warning information can be notified, for example, by displaying characters or symbols on the display unit 3, or by sound or light. Alternatively, an alarm can be transmitted to an external device by a wireless communication module mounted on the tablet 100.

[0119] [effect] According to the above-described embodiment, it is possible to perform imaging with improved reliability of the temperature distribution image. Also, by changing the imaging time interval based on the display temperature of the temperature distribution image, it is possible to obtain a more accurate temperature distribution image. Also, by notifying a warning information when the display temperature of the temperature distribution image exceeds a predetermined threshold and becomes high, it is possible to notify the user of the occurrence of an abnormality.

[0120] In the above-described embodiment, when the display temperature exceeds a predetermined threshold value, the imaging time interval is changed and warning information is notified. However, it is not necessary for both the imaging time interval and the warning information to be changed, and either one of them may be executed.

[0121] (Embodiment 5) A fifth embodiment will be described with reference to Fig. 14. In the fifth embodiment, the same or equivalent configurations as those in the first embodiment will be denoted by the same reference numerals. In the fifth embodiment, descriptions that overlap with those in the first embodiment will be omitted.

[0122] FIG. 14 is a block diagram showing a control device 1a of a thermography camera 2a according to the fifth embodiment.

[0123] As shown in Fig. 14, the fifth embodiment differs from the first embodiment in that the control device 1a further includes an output control unit 13. The output control unit 13 controls the output of information (first information) related to the correction of the display temperature, which will be described later. The fifth embodiment also differs from the first embodiment in that the thermographic camera 2a does not include a shutter.

[0124] In this embodiment, the control device 1a controls a manual imaging mode in which the thermographic camera 2a captures images at a timing selected by the user. Furthermore, the correction control unit 12 periodically corrects the display temperature of the temperature distribution image at a predetermined correction time interval. The predetermined correction time interval is determined in advance based on the characteristics of the thermographic camera 2a, etc.

[0125] When input information is acquired from a user during the execution of the correction, the output control unit 13 generates and outputs information related to the correction of the display temperature. In this embodiment, first information is generated and output as information related to the correction of the display temperature. The first information is information indicating that the correction is being executed. The first information can be displayed, for example, by characters or symbols, or can be notified by sound or light. In this embodiment, since the display unit 3 is connected to the control device 1a, the first information can be displayed on the display unit 3 by characters or symbols.

[0126] The control device 1a is also connected to an input unit 4 such as a keyboard, buttons, or a touch panel, and acquires input information from the input unit 4. The input information may include, for example, information such as the timing of imaging (instantaneous imaging or timer imaging) and the number of images to be captured. The imaging control unit 11 causes the thermographic camera 2a to capture an image of the temperature measurement target based on the input information, and acquires a temperature distribution image. That is, unlike the interval imaging mode in which imaging is performed periodically, the present embodiment captures an image of the temperature measurement target and acquires a temperature distribution image based on input information from a user.

[0127] The control device 1a and the thermography camera 2a may be mounted on a tablet (not shown) as in the first embodiment.

[0128] [Operation] A method of controlling the thermographic camera 2a by the control device 1a will be described with reference to Fig. 15. Fig. 15 is a flow chart showing a method of controlling the thermographic camera 2a of Fig. 14.

[0129] First, the manual imaging mode is started by a user's input (step S201). At this time, the correction control unit 12 periodically corrects the display temperature of the temperature distribution image at a predetermined correction time interval (step S202).

[0130] The imaging control unit 11 determines whether or not the correction control unit 12 is correcting the display temperature (step S203). If it is a period from when the correction control unit 12 starts correcting the display temperature until a predetermined waiting time k seconds has elapsed, the imaging control unit 11 determines that the correction is being performed (Yes in step S203). If the imaging control unit 11 determines that the correction is being performed, the output control unit 13 outputs information related to the correction of the display temperature (step S204). The step of outputting information includes a step of outputting first information indicating that the correction is being performed (step S205). In this embodiment, the output control unit 13 outputs the first information to the display unit 3 by a character string saying "temperature correction in progress" as described in FIG. 11. If the predetermined waiting time k seconds has elapsed since the correction control unit 12 started correcting the display temperature, the imaging control unit 11 determines that the correction is not being performed (No in step S203) and proceeds to the next step.

[0131] The first information is not limited to a character string, and may be a symbol, etc. Alternatively, the first information may be an indicator indicating the time from the start of correction until a predetermined waiting time has elapsed, that is, until the correction is completed.

[0132] Next, the imaging control unit 11 determines whether to acquire input information from the user (step S206). If it is determined that the input information has been acquired (Yes in step S206), the imaging control unit 11 controls the thermographic camera 2 to cause the imaging element 21 to capture an image of the temperature measurement target and acquire a temperature distribution image (step S207). If it is determined that the input information has not been acquired (No in step S206), the imaging control unit 11 proceeds to step S208.

[0133] Next, the imaging control unit 11 determines whether or not the manual imaging mode is to be ended (step S208). The imaging control unit 11 determines to end the manual imaging mode when, for example, the user inputs a command to switch to another mode, or when a predetermined number of images have been captured is exceeded, etc. When the imaging control unit 11 determines not to end the manual imaging mode (No in step S208), the process returns to step S202. When the imaging control unit 11 determines to end the manual imaging mode (No in step S208), the process ends.

[0134] [effect] According to the above-described embodiment, in the manual imaging mode, information regarding correction of the display temperature is output. Specifically, when the correction is being executed, the display unit 3 displays first information indicating that the correction is being executed. By outputting the first information to the display unit 3, the user can easily recognize that the correction is being executed, and imaging during the correction can be avoided. Therefore, imaging with improved reliability of the temperature distribution image can be performed.

[0135] In the above embodiment, an example has been described in which the thermographic camera 2a does not include a shutter, but the thermographic camera 2a may include a shutter.

[0136] In the above embodiment, the information on the correction of the display temperature is the first information indicating that the correction is being performed, but the information on the correction of the display temperature is not limited to the first information. For example, the information on the correction of the display temperature may include information indicating that the correction is not being performed.

[0137] (Embodiment 6) A sixth embodiment will be described with reference to Fig. 16 and Fig. 17. In the sixth embodiment, the same or equivalent configurations as those in the fifth embodiment will be denoted by the same reference numerals. In the sixth embodiment, descriptions that overlap with those in the fifth embodiment will be omitted.

[0138] Fig. 16 is a flowchart showing a method for controlling the thermographic camera 2a according to the sixth embodiment. Fig. 17 is a diagram showing an image captured by the thermographic camera 2a.

[0139] In the sixth embodiment, as shown in Fig. 16, the process after the imaging control unit 11 determines that the correction is being performed is different from that in the fifth embodiment. In the present embodiment, in addition to the first information, second information is added to the temperature distribution image as information related to the correction of the display temperature. The second information is information indicating that the temperature distribution image is an image acquired while the correction is being performed. Note that steps S211 to S213, steps S214 to S215, and step S220 are the same as steps S201 to S203, steps S206 to S207, and step S208 in Fig. 16, and therefore the description thereof will be omitted.

[0140] After the output control unit 13 outputs the first information (step S216), the imaging control unit 11 determines whether or not to acquire input information (step S217). When the imaging control unit 11 determines that the input information has been acquired (Yes in step S217), it images the temperature measurement target to acquire a temperature distribution image (step S218). Next, the output control unit 13 adds second information indicating that correction is being performed to the temperature distribution image acquired in step S218 (step S219).

[0141] The second information is displayed in the acquired image 5 as a character string 53 of "Temperature correction in progress" as shown in FIG. 17. The second information may be a symbol or the like other than a character string. In the image 5 shown in FIG. 17, a temperature distribution image 51 taken by the thermographic camera 2a and an image 52 taken by the visible light camera are displayed side by side. The position at which the second information is displayed is not limited to that shown in FIG. 17, and the second information may be displayed at any position. In addition to being displayed in the image, the second information may be added to the file name, metadata, or the like of the acquired image.

[0142] [effect] According to the above-described embodiment, when a temperature distribution image is acquired by imaging while correction is being performed, second information indicating that the image was captured while correction was being performed is added to the acquired temperature distribution image. This allows imaging to acquire a temperature distribution image even while correction is being performed. Also, by adding the second information indicating that correction is being performed to the captured image, it is possible to easily identify that the acquired image was captured while correction was being performed.

[0143] It is noted that the step of outputting the first information in step S216 does not necessarily have to be executed.

[0144] (Embodiment 7) A seventh embodiment will be described with reference to Fig. 18 and Fig. 19. In the seventh embodiment, the same or equivalent configurations as those in the sixth embodiment will be denoted by the same reference numerals. In the sixth embodiment, descriptions that overlap with those in the fifth embodiment will be omitted.

[0145] Fig. 18 is a flowchart showing a method for controlling the thermography camera 2a according to the seventh embodiment. Fig. 19 is a diagram showing an example of information related to the execution of imaging output to the display unit 3.

[0146] The seventh embodiment differs from the sixth embodiment in that, when input information is acquired during the execution of correction, the output control unit 13 outputs information related to the execution of imaging (step S228). The seventh embodiment also differs from the sixth embodiment in that the execution of imaging is controlled based on the imaging execution information input in response to the information related to the execution of imaging (steps S229, S230). Note that steps S221 to S227 and step S231 are the same as steps S211 to S217 and step S220 in the sixth embodiment, and therefore description thereof will be omitted.

[0147] When the imaging control unit 11 determines that it has acquired input information during the execution of correction (Yes in step S227), the output control unit 13 outputs information related to the execution of imaging. The information related to the execution of imaging can be output to the display unit 3a as shown in FIG. 19. The imaging control unit 11 acquires the imaging execution information input in response to the output information related to the execution of imaging, and executes imaging based on the acquired imaging execution information. For example, the user can select information related to the execution of imaging using buttons 41 to 43 of the touch panel (input unit 4). The imaging control unit 11 performs control such that imaging is continued when the button 41 is selected, imaging is stopped when the button 42 is selected, or imaging is executed after the completion of correction when the button 43 is selected. The imaging execution information input in response to the output information related to the execution of imaging may be input from a keyboard or the like other than the touch panel.

[0148] When the button 41 or the button 43 is selected, the imaging control unit 11 determines that imaging is to be performed (Yes in step S229). When the button 42 is selected, imaging is performed after waiting until the correction is completed in step S230. When the button 42 is selected, the imaging control unit 11 determines that imaging is not to be performed (No in step S229).

[0149] [effect] According to the above-described embodiment, when input information is received during the execution of correction, information regarding the execution of imaging is output, and the execution of imaging is controlled based on the imaging execution information input for the information regarding the execution of imaging. This allows the user to select interruption, continuation, or continuation after correction is completed, even if the imaging control unit 11 receives input information from the user during the execution of correction, thereby improving user convenience.

[0150] (Embodiment 8) An eighth embodiment will be described with reference to Fig. 20. In the eighth embodiment, the same or equivalent configurations as those in the fifth embodiment will be denoted by the same reference numerals. In the eighth embodiment, descriptions that overlap with those in the fifth embodiment will be omitted.

[0151] FIG. 20 is a flowchart showing a method of controlling the thermography camera 2a according to the eighth embodiment.

[0152] The eighth embodiment differs from the fifth embodiment in that, when correction is not being performed, third information indicating that correction is not being performed is output as information related to correction of the displayed temperature (step S245). Note that steps S241 to S243 and steps S246 to S248 are the same as steps S201 to S203 and steps S246 to S248 in the fifth embodiment, and therefore description thereof will be omitted.

[0153] When the imaging control unit 11 determines that correction is not being performed (No in step S243), the output control unit 13 outputs third information indicating that correction is not being performed (step S245). The third information can be output, for example, by displaying a character string or a symbol indicating that correction is not being performed on the display unit 3. Alternatively, the notification may be given by sound or the like. By outputting the third information, the user can input input information after confirming that correction is not being performed. When the imaging control unit 11 acquires the input information (step S246), the imaging control unit 11 executes imaging based on the input information (step S247).

[0154] [effect] According to the embodiment described above, when correction is not being performed, the third information indicating that correction is not being performed is output. This allows the user to easily recognize whether correction is being performed or not, improving convenience.

[0155] In the above-described embodiment, an example has been described in which the third information indicating that correction is not being performed is output as information related to correction, but the first information and / or the second information may be output in addition to the third information.

[0156] (Embodiment 9) A ninth embodiment will be described with reference to Fig. 21. In the ninth embodiment, configurations that are the same as or similar to those in the fifth embodiment will be denoted by the same reference numerals. In the ninth embodiment, descriptions that overlap with those in the fifth embodiment will be omitted.

[0157] FIG. 21 is a flowchart showing a method of controlling the thermography camera 2a according to the ninth embodiment.

[0158] The ninth embodiment differs from the fifth embodiment in that the correction time interval is changed based on the display temperature of the temperature distribution image (steps S258 to S259). Note that steps S251 to S257 and step S260 are the same as steps S201 to S207 and step S208 in the fifth embodiment, and therefore a description thereof will be omitted.

[0159] If the display temperature of the temperature distribution image acquired by the imaging control unit 11 exceeds a predetermined threshold, there is a possibility that an abnormality has occurred in the temperature measurement target. Therefore, when the imaging control unit 11 determines that the display temperature of the temperature distribution image exceeds the predetermined threshold based on the display temperature (Yes in step S258), the correction control unit 12 changes the correction time interval (step S259). The correction time interval may be changed, for example, by shortening the correction time interval to increase the frequency of correction. By increasing the frequency of correction, a more accurate temperature distribution image can be acquired.

[0160] If it is determined that the display temperature of the temperature distribution image is equal to or lower than the threshold value (No in step S258), the correction time interval is not changed and the process proceeds to step S260.

[0161] [effect] According to the above-described embodiment, the correction time interval can be changed depending on the change in the display temperature of the temperature distribution image, so that a more accurate temperature distribution image can be obtained. [Industrial Applicability]

[0162] The present disclosure is widely applicable to thermography camera control methods and thermography camera control devices. [Explanation of symbols]

[0163] 1, 1a Control device 2. 2a Thermography camera 3 Display section 4 Input section 11 Imaging control unit 12 Correction control section 13 Output control section 21 Image sensor 22 Shutter

Claims

1. A method for controlling a thermography camera that periodically captures images, comprising the steps of: periodically correcting a display temperature of the temperature distribution image; and capturing an image of the temperature measurement target periodically at an image capturing time interval of N seconds with the thermographic camera to obtain the temperature distribution image. the step of acquiring the temperature distribution image includes capturing an image of the temperature measurement target after a waiting time k seconds has elapsed since the start of the step of correcting the display temperature until the display temperature becomes stable; The waiting time k seconds is shorter than the imaging time interval N seconds, The step of correcting the displayed temperature includes correcting the displayed temperature after waiting for N-k seconds from capturing an image of the temperature measurement target. How to control a thermal imaging camera.

2. The waiting time k seconds is determined based on a display temperature of a temperature distribution image of a reference object different from the temperature measurement object before the step of correcting the display temperature. The thermography camera control method according to claim 1 .

3. The thermographic camera includes an image sensor and a shutter disposed at a position closer to the object to be measured than the image sensor; The step of correcting the displayed temperature includes: Closing the shutter; capturing an image of the shutter with the imaging element to obtain a temperature distribution image of the shutter; and correcting the display temperature based on a temperature distribution image of the shutter. A method for controlling a thermographic camera according to claim 1 or 2.

4. The method further includes a step of displaying, on a display unit during the step of correcting the display temperature, the temperature distribution image and information indicating that correction is being performed. A method for controlling a thermographic camera according to any one of claims 1 to 3.

5. changing the waiting time k seconds based on a display temperature of the temperature distribution image; 5. A method for controlling a thermographic camera according to claim 1.

6. The step of changing the waiting time k seconds includes shortening the waiting time k seconds when an amount of change in the display temperature of the temperature distribution image exceeds a predetermined range. The thermography camera control method according to claim 5.

7. changing the imaging time interval N seconds based on a display temperature of the temperature distribution image; A method for controlling a thermographic camera according to any one of claims 1 to 6.

8. The step of changing the imaging time interval of N seconds includes shortening the imaging time interval of N seconds when a display temperature of the temperature distribution image exceeds a predetermined threshold value. The thermography camera control method according to claim 7.

9. and further comprising a step of notifying warning information when the display temperature of the temperature distribution image exceeds the predetermined threshold. The thermography camera control method according to claim 8.

10. The waiting time k seconds is 10 seconds or more and 300 seconds or less. A method for controlling a thermographic camera according to any one of claims 1 to 9.

11. A control device for a thermographic camera having an image sensor that periodically captures an image of a temperature measurement target to obtain a temperature distribution image, a correction control unit that periodically corrects a display temperature of the temperature distribution image; an imaging control unit that causes the imaging element to capture an image of the temperature measurement target at an imaging time interval of N seconds; the imaging control unit causes the imaging element to capture an image of the temperature measurement target after a waiting time k seconds has elapsed since the correction control unit started to correct the display temperature until the display temperature becomes stable; The waiting time k seconds is shorter than the imaging time interval N seconds, The correction control unit waits until N-k seconds have elapsed since the image was captured, and after waiting for N-k seconds, starts correcting the display temperature. Control device.

12. the waiting time k seconds is determined based on a display temperature of a temperature distribution image of a reference object different from the temperature measurement object before correcting the display temperature. The control device according to claim 11.

13. The thermographic camera includes a shutter disposed at a position closer to the temperature measurement target than the imaging element, closing the shutter and capturing an image of the shutter with the imaging element to obtain a temperature distribution image of the shutter; and correcting the display temperature based on a temperature distribution image of the shutter.

13. A control device according to claim 11 or 12.

14. while correcting the display temperature, displaying the temperature distribution image and information indicating that correction is being performed on a display unit. A control device according to any one of claims 11 to 13.

15. changing the waiting time k seconds based on the display temperature of the temperature distribution image; A control device according to any one of claims 11 to 14.

16. When a change in the display temperature of the temperature distribution image exceeds a predetermined range, the waiting time k seconds is shortened. The control device according to claim 15.

17. changing the image capturing time interval N seconds based on the display temperature of the temperature distribution image; 17. A control device according to any one of claims 11 to 16.

18. When the display temperature of the temperature distribution image exceeds a predetermined threshold, the imaging time interval is shortened by N seconds.

20. The control device of claim 17.

19. When the display temperature of the temperature distribution image exceeds the predetermined threshold, a warning is issued.

20. The control device of claim 18.

20. The waiting time k seconds is 10 seconds or more and 300 seconds or less.

20. A control device according to any one of claims 11 to 19.

Images