CN116437164A - Thermal imager, thermal imager monitoring method, thermal imager monitoring device, computer equipment and storage medium - Google Patents
Thermal imager, thermal imager monitoring method, thermal imager monitoring device, computer equipment and storage medium Download PDFInfo
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Abstract
The application relates to a thermal imager, a thermal imager monitoring method, a thermal imager monitoring device, a computer device and a storage medium. The thermal imager comprises an imaging zoom lens group and an imaging focusing lens group, and the method comprises the following steps: acquiring characteristic information of a target monitoring scene, and determining target data parameters of a thermal imager corresponding to the target monitoring scene according to the characteristic information; the target data parameters comprise target zoom parameters of the imaging zoom lens group and target focusing parameters of the imaging focusing lens group; adjusting the imaging zoom lens group according to the target zoom parameter, and adjusting the imaging focusing lens group according to the target focusing parameter; and acquiring a monitoring image obtained by the thermal imager under the target data parameters. By adopting the method, the zoom focusing position of the thermal imager can be automatically adjusted when the multi-point target is monitored, clear imaging can be realized without the adjustment of staff, the working efficiency is higher, and the operation is simpler and more convenient.
Description
Technical Field
The present disclosure relates to the field of temperature monitoring technologies, and in particular, to a thermal imager, a thermal imager monitoring method, a thermal imager monitoring device, a computer device, and a storage medium.
Background
The valve hall of the convertor station is mainly used for distributing the replacing flow valve and the building of related equipment. More electrical equipment is typically located in the valve hall. These electrical devices operate for a long period of time, which is extremely prone to temperature rise, and therefore require temperature monitoring of the electrical devices.
In the prior art, the electric equipment is monitored through the thermal imager, the thermal imager is arranged on the rotary holder, and the thermal imager can face the monitored electric equipment through the rotation of the holder.
However, because the thermal imager is fixed in position and the distances between different electrical devices and the thermal imager are different, even if the thermal imager rotates towards the electrical device through the cradle head, the acquired thermal infrared image of the electrical device is not clear enough.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a thermal imager, a thermal imager monitoring method, a thermal imager monitoring device, a computer device, and a storage medium capable of acquiring a high-definition thermal infrared image.
In a first aspect, the present application provides a thermal imager monitoring method, the thermal imager including an imaging zoom lens group and an imaging focus lens group, the method comprising:
acquiring characteristic information of a target monitoring scene, and determining target data parameters of a thermal imager corresponding to the target monitoring scene according to the characteristic information; the target data parameters comprise target zoom parameters of the imaging zoom lens group and target focusing parameters of the imaging focusing lens group;
Adjusting the imaging zoom lens group according to the target zoom parameter, and adjusting the imaging focusing lens group according to the target focusing parameter;
and acquiring a monitoring image obtained by the thermal imager under the target data parameters.
In one embodiment, after feature information of a target monitoring scene is acquired, determining target data parameters of a thermal imager corresponding to the target monitoring scene according to the feature information; before the target data parameters include the target zoom parameters of the imaging zoom lens group and the target focus parameters of the imaging focus lens group, the method further comprises:
determining characteristic data parameters of the thermal imagers corresponding to each monitoring scene; the characteristic data parameters comprise characteristic zoom parameters of the imaging zoom lens group and characteristic focusing parameters of the imaging focusing lens group.
In one embodiment, determining characteristic data parameters of a thermal imager corresponding to each monitoring scene; the characteristic data parameters comprise characteristic zoom parameters of the imaging zoom lens group and characteristic focusing parameters of the imaging focusing lens group, and the characteristic data parameters comprise:
for each monitoring scene, adjusting preset data parameters of the thermal imager; the preset data parameters comprise preset zoom parameters of the imaging zoom lens group and preset focusing parameters of the imaging focusing lens group;
acquiring a preset thermal infrared image of a corresponding monitoring scene based on each preset zoom parameter and each preset focusing parameter;
And determining characteristic data parameters corresponding to the monitored scene according to the preset thermal infrared image.
In one embodiment, determining the characteristic data parameters corresponding to the monitored scene according to the preset thermal infrared image includes:
identifying a characteristic thermal infrared image with the definition being greater than a preset threshold value based on the definition of each preset thermal infrared image, and determining a characteristic zoom parameter and a characteristic focusing parameter corresponding to the characteristic thermal infrared image;
and acquiring characteristic information of the monitored scene, and corresponding the characteristic information with the characteristic zoom parameter and the characteristic focusing parameter.
In one embodiment, acquiring a monitoring image of a thermal imager obtained under a target data parameter includes:
acquiring an image to be registered, which is obtained by a thermal imager under a target data parameter, and acquiring a preset thermal infrared image corresponding to the target data parameter;
acquiring a preset contour in a preset thermal infrared image, and establishing a first mark area with a preset number of preset areas on the preset contour according to a preset distance;
traversing the image to be registered, sequentially determining a second mark area consistent with each first mark area pixel, and determining a registration contour in the image to be registered according to the second mark areas;
And deforming the image to be registered, aligning the registration contour with the preset contour, and obtaining the monitoring image under the target data parameters.
In one embodiment, the imaging zoom lens group is controlled by a zoom stepper motor, the imaging focusing lens group is controlled by a focusing stepper motor, the target zoom parameter comprises the zoom rotation step number of the zoom stepper motor, and the target focusing parameter comprises the focusing rotation step number of the focusing stepper motor; adjusting the imaging zoom lens group according to the target zoom parameter, adjusting the imaging focusing lens group according to the target focusing parameter, comprising:
adjusting the variable-magnification stepping motor according to the variable-magnification rotation step number; and adjusting the focusing stepping motor according to the focusing rotation step number.
In a second aspect, the present application further provides a thermal imager monitoring device, the thermal imager including an imaging zoom lens group and an imaging focusing lens group, the device comprising:
the target parameter determining module is used for acquiring characteristic information of a target monitoring scene and determining target data parameters of a thermal imager corresponding to the target monitoring scene according to the characteristic information; the target data parameters comprise target zoom parameters of the imaging zoom lens group and target focusing parameters of the imaging focusing lens group;
the lens group adjusting module is used for adjusting the imaging zoom lens group according to the target zoom parameter and adjusting the imaging focusing lens group according to the target focusing parameter;
And the monitoring image acquisition module is used for acquiring a monitoring image obtained by the thermal imager under the target data parameters.
In a third aspect, the present application also provides a thermal infrared imager. The thermal infrared imager includes:
the thermal imaging detector assembly comprises a thermal imaging lens and is used for acquiring infrared light signals and converting the infrared light signals into electric signals;
the imaging zoom lens group is used for adjusting the multiple of the thermal imaging lens and is controlled by a zoom stepping motor;
the imaging focusing lens group is used for adjusting the focal length of the thermal imaging lens and is controlled by the focusing stepping motor; and
and the control module is used for receiving the electric signals and controlling the zoom stepping motor and the focusing stepping motor.
In a fourth aspect, the present application further provides a computer device, where the computer device includes a memory and a processor, the memory stores a computer program, and the processor implements a thermal imager monitoring method when executing the computer program, where the thermal imager includes an imaging zoom lens group and an imaging focusing lens group, and the thermal imager monitoring method includes the steps of:
acquiring characteristic information of a target monitoring scene, and determining target data parameters of a thermal imager corresponding to the target monitoring scene according to the characteristic information; the target data parameters comprise target zoom parameters of the imaging zoom lens group and target focusing parameters of the imaging focusing lens group;
Adjusting the imaging zoom lens group according to the target zoom parameter, and adjusting the imaging focusing lens group according to the target focusing parameter;
and acquiring a monitoring image obtained by the thermal imager under the target data parameters.
In a fifth aspect, the present application also provides a computer-readable storage medium. A computer readable storage medium having stored thereon a computer program which when executed by a processor implements a thermal imager monitoring method, the thermal imager comprising an imaging zoom lens group and an imaging focus lens group, the thermal imager monitoring method comprising the steps of:
acquiring characteristic information of a target monitoring scene, and determining target data parameters of a thermal imager corresponding to the target monitoring scene according to the characteristic information; the target data parameters comprise target zoom parameters of the imaging zoom lens group and target focusing parameters of the imaging focusing lens group;
adjusting the imaging zoom lens group according to the target zoom parameter, and adjusting the imaging focusing lens group according to the target focusing parameter;
and acquiring a monitoring image obtained by the thermal imager under the target data parameters.
In a sixth aspect, the present application also provides a computer program product. A computer program product comprising a computer program which when executed by a processor implements a thermal imager monitoring method, the thermal imager comprising an imaging zoom lens group and an imaging focus lens group, the thermal imager monitoring method comprising the steps of:
Acquiring characteristic information of a target monitoring scene, and determining target data parameters of a thermal imager corresponding to the target monitoring scene according to the characteristic information; the target data parameters comprise target zoom parameters of the imaging zoom lens group and target focusing parameters of the imaging focusing lens group;
adjusting the imaging zoom lens group according to the target zoom parameter, and adjusting the imaging focusing lens group according to the target focusing parameter;
and acquiring a monitoring image obtained by the thermal imager under the target data parameters.
According to the thermal imager, the thermal imager monitoring method, the thermal imager monitoring device, the computer equipment and the storage medium, the thermal imager is used for monitoring the monitored scene, and the thermal imager comprises the imaging zoom lens group and the imaging focusing lens group. When monitoring, firstly, acquiring characteristic information of a target monitoring scene, and determining target data parameters of the thermal imager according to the characteristic information, wherein the target data parameters comprise target zoom parameters of an imaging zoom lens group and target focusing parameters of an imaging focusing lens group. And the definition of the monitoring scene acquired by the thermal imager under the target data parameters is maximized. And then, adjusting the parameters of the imaging zoom lens group to target zoom parameters, and taking the thermal infrared image acquired by the thermal imager at the moment as a monitoring image when the parameters of the imaging focusing lens group are adjusted to target focusing parameters. Compared with the technical scheme that the image definition is difficult to adjust in a self-adaptive manner in the traditional technology, the scheme provided by the application can determine the parameters of the thermal imager based on the target monitoring scene, so that the monitoring image meeting the definition requirement is obtained. When the multi-point target is monitored, the zoom focusing position of the thermal imager is automatically adjusted, and clear imaging can be realized without adjustment of staff, so that the working efficiency is higher, and the operation is simpler and more convenient. The intelligent monitoring device has the advantages of being accurate, reliable, simple and durable in structure, clear and reasonable in layout, and capable of effectively improving the working efficiency of equipment and realizing intelligent monitoring of the thermal infrared imager.
Drawings
FIG. 1 is an application environment diagram of a thermal imager monitoring method in one embodiment;
FIG. 2 is a flow chart of a thermal imager monitoring method in one embodiment;
FIG. 3 is a schematic diagram of a thermal imager acquiring a monitoring image with insufficient sharpness;
FIG. 4 is a schematic diagram of acquiring a clear surveillance image by a thermal imager in one embodiment;
FIG. 5 is a schematic illustration of a contour line on a monitored image in one embodiment;
FIG. 6 is a schematic illustration of marking lines on a contour line in one embodiment;
FIG. 7 is a flow chart of a thermal imager monitoring method in another embodiment;
FIG. 8 is a block diagram of a thermal imager monitoring device in one embodiment;
fig. 9 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The thermal imager monitoring method provided by the embodiment of the application can be applied to an application environment shown in fig. 1. Wherein the terminal 102 communicates with the server 104 via a network. The data storage system may store data that the server 104 needs to process. The data storage system may be integrated on the server 104 or may be located on a cloud or other network server. The server 104 receives and processes the data information of the terminal 102, and may also control the terminal 102. The terminal 102 is used to acquire a thermal infrared image. The terminal 102 may be a thermal imager, a thermal infrared camera, or a thermal infrared camera, among others. The server 104 may be implemented as a stand-alone server or as a server cluster of multiple servers.
In one embodiment, as shown in fig. 2, a thermal imager monitoring method is provided, where the thermal imager includes an imaging zoom lens group and an imaging focusing lens group, and the method is applied to the server 104 in fig. 1 for illustration, and includes the following steps S202 to S206:
s202, acquiring characteristic information of a target monitoring scene, and determining target data parameters of a thermal imager corresponding to the target monitoring scene according to the characteristic information; the target data parameters include a target zoom parameter of the imaging zoom lens group and a target focus parameter of the imaging focus lens group.
The thermal imager is a device for converting invisible infrared energy emitted by an object into a visible thermal infrared image, and converting an image of temperature distribution of the object into a visible image by detecting infrared radiation of the object and applying means such as signal processing, photoelectric conversion and the like. In general, a thermal imager includes a thermal imaging lens and an assembly for adjusting the lens.
In this embodiment, the thermal imager includes a thermal imaging detector assembly, an imaging zoom lens assembly, an imaging focusing lens assembly, and a control module. The thermal imaging detector assembly comprises a thermal imaging lens and is used for acquiring infrared light signals and converting the infrared light signals into electric signals; the imaging zoom lens group is used for adjusting the multiple of the thermal imaging lens, and is controlled by a zoom stepping motor; the imaging focusing lens group is used for adjusting the focal length of the thermal imaging lens and is controlled by the focusing stepping motor; and the control module is used for receiving the electric signals and controlling the zoom stepping motor and the focusing stepping motor.
The control module may be a control circuit board, and the control circuit board includes a zoom stepper motor assembly and a focus stepper motor assembly, and the control circuit board drives the imaging zoom lens set by controlling the zoom stepper motor and drives the imaging focus lens set to work by controlling the focus stepper motor.
The monitoring scene is a scene which is located in the valve hall and needs to be subjected to temperature detection, and illustratively, the monitoring scene can be a region or one electric device or a plurality of electric devices. The valve hall can be internally provided with a plurality of monitoring scenes, each monitoring scene is provided with unique corresponding characteristic information, and the corresponding monitoring scene can be uniquely determined according to the characteristic information. Illustratively, all monitoring scenes may be partitioned and numbered, and the feature information may be a number. In addition, the characteristic information can be a preset position of the holder, and the monitoring scene is uniquely determined when the holder rotates to the preset position.
In one possible implementation, the characteristic information corresponds to a data parameter of the thermal imager, i.e. after determining the characteristic information of the monitored scene, the data parameter of the thermal imager can be determined. The target monitoring scene is a scene requiring temperature monitoring by a thermal imager. After the server 104 receives the target monitoring scene, determining feature information corresponding to the target monitoring scene, thereby determining target data parameters of the thermal imager, wherein the target data parameters comprise a target zoom parameter and a target focus parameter. The imaging zoom lens group in the thermal imager is under the target zoom parameter, and the imaging focusing lens group is under the target focusing parameter, so that a target monitoring scene acquired by the thermal imager is used as a monitoring image.
S204, adjusting the imaging zoom lens group according to the target zoom parameter, and adjusting the imaging focusing lens group according to the target focusing parameter.
After the target zoom parameter and the target focusing parameter are determined, the imaging zoom lens group and the imaging focusing lens group in the thermal imager can be subjected to parameter adjustment, so that the imaging zoom lens group is under the target zoom parameter, and the imaging focusing lens group is under the target focusing parameter.
When a thermal infrared image is acquired by a thermal imager, an imaging zoom lens group and an imaging focusing lens group need to be adjusted. Therefore, after the characteristic parameters of the target monitoring scene are determined, the zoom parameters of the imaging zoom lens group and the focusing parameters of the imaging focusing lens group are determined.
S206, obtaining a monitoring image obtained by the thermal imager under the target data parameters.
And adjusting the parameters of the imaging zoom lens group in the thermal imager to be target zoom parameters, and acquiring a thermal infrared image obtained by shooting a target monitoring scene by the thermal imager at the moment as a monitoring image of the target monitoring scene after adjusting the parameters of the imaging focusing lens group to be target focusing parameters.
Specifically, the corresponding thermal imager parameters when the definition of each target monitoring scene is highest are predetermined. After the target monitoring scene is determined, the corresponding thermal imager parameters are called according to the characteristic information corresponding to the target monitoring scene, so that the thermal imager can acquire the monitoring image of the target monitoring scene when the thermal imager is regulated to the parameters.
In the thermal imager monitoring method, the monitoring scene is monitored through the thermal imager, wherein the thermal imager comprises an imaging zoom lens group and an imaging focusing lens group. When monitoring, firstly, acquiring characteristic information of a target monitoring scene, and determining target data parameters of the thermal imager according to the characteristic information, wherein the target data parameters comprise target zoom parameters of an imaging zoom lens group and target focusing parameters of an imaging focusing lens group. And the definition of the monitoring scene acquired by the thermal imager under the target data parameters is maximized. And then, adjusting the parameters of the imaging zoom lens group to target zoom parameters, and taking the thermal infrared image acquired by the thermal imager at the moment as a monitoring image when the parameters of the imaging focusing lens group are adjusted to target focusing parameters. Compared with the technical scheme that the self-adaptive adjustment based on the target monitoring scene is difficult in the traditional technology, the scheme provided by the application can determine the parameters of the thermal imager based on the target monitoring scene, so that the monitoring image meeting the requirements is obtained.
In one embodiment, after obtaining feature information of a target monitoring scene, determining target data parameters of a thermal imager corresponding to the target monitoring scene according to the feature information; before the target data parameters comprise the target zoom parameters of the imaging zoom lens group and the target focusing parameters of the imaging focusing lens group, the thermal imager monitoring method further comprises the following steps: determining characteristic data parameters of the thermal imagers corresponding to each monitoring scene; the characteristic data parameters comprise characteristic zoom parameters of the imaging zoom lens group and characteristic focusing parameters of the imaging focusing lens group.
Before determining the target data parameters of the thermal imager according to the characteristic information of the target monitoring scene, the target monitoring information, the characteristic information and the target data parameters of the thermal imager need to be corresponding.
Specifically, it is necessary to mark the feature information of each monitoring scene in the valve hall, and determine the target data parameters of the thermal imager corresponding to the feature information. After the target monitoring scene is determined, the characteristic data parameters of the thermal imager can be determined according to the characteristic information corresponding to the target monitoring scene. The corresponding relation of all monitoring scenes, the characteristic information and the characteristic data parameters of the thermal imager can be stored in a data storage system and called at any time.
The characteristic data parameters of the thermal imager comprise characteristic zoom parameters of the imaging zoom lens group and characteristic focusing parameters of the imaging focusing lens group, so that for any monitored scene, the thermal imager has corresponding characteristic parameters, corresponding characteristic zoom parameters and characteristic focusing parameters, and when the imaging zoom lens group is in the characteristic zoom parameters and the imaging focusing lens group is in the characteristic focusing parameters, the thermal infrared image definition of the current monitored scene acquired by the thermal imager is highest.
In this embodiment, for each monitoring scene in the valve hall, feature information corresponding to each monitoring scene is determined, and feature data parameters of the thermal imager corresponding to the feature information are determined. The characteristic data parameters of the thermal imager comprise characteristic zoom parameters and characteristic focusing parameters, so that after a target monitoring scene is determined, the target zoom parameters of the imaging zoom lens group and the target focusing parameters of the imaging focusing lens group can be determined. By corresponding each monitoring scene with the characteristic information, shooting parameters of the thermal imager can be directly obtained according to the monitoring scenes, and the thermal infrared image meeting the requirements can be obtained. Compared with the technical scheme that multiple times of zooming and multiple times of focusing are needed in the prior art, the embodiment can omit intermediate steps and submit efficiency.
In one embodiment, determining characteristic data parameters of a thermal imager corresponding to each monitoring scene; the characteristic data parameters comprise characteristic zoom parameters of the imaging zoom lens group and characteristic focusing parameters of the imaging focusing lens group, and the characteristic data parameters comprise: for each monitoring scene, adjusting preset data parameters of the thermal imager; the preset data parameters comprise preset zoom parameters of the imaging zoom lens group and preset focusing parameters of the imaging focusing lens group; acquiring preset thermal infrared images of a monitored scene under each preset zoom parameter and each preset focusing parameter; and determining characteristic data parameters corresponding to the monitored scene according to the preset thermal infrared image.
In order to determine the characteristic data parameters of the thermal imagers corresponding to each monitoring scene, the thermal infrared images of the monitoring scenes acquired by the thermal imagers under different data parameters are required to be determined.
For each monitored scene, adjusting preset data parameters of the thermal imager, including adjusting preset zoom parameters of the imaging zoom lens set and preset focusing parameters of the imaging focusing lens set. And for each parameter adjustment of the preset zoom parameter and the preset focus parameter, the monitoring scene acquired by the thermal imager is different, so that a plurality of preset thermal infrared images under different parameters are obtained.
And (3) establishing screening conditions for a plurality of preset thermal infrared images, and manually screening or automatically screening to determine unique characteristic data parameters, namely unique characteristic zoom parameters and characteristic focusing parameters. After the target monitoring scene is determined, the corresponding target zoom parameter and the target focusing parameter can be determined based on the characteristic information.
In this embodiment, for each monitoring scene, a preset thermal infrared image obtained by the thermal imager under each parameter is obtained by continuously changing a preset zoom parameter and a preset focus parameter of the thermal imager, and a characteristic data parameter of the thermal imager corresponding to the monitoring scene is determined according to the obtained plurality of preset thermal infrared images. The corresponding characteristic data parameters can be determined after the characteristic information is determined, and the steps of determining the zoom and focus parameters are set before shooting, so that the parameters can be directly called after the target monitoring scene is determined.
In one embodiment, determining the characteristic data parameters corresponding to the monitored scene according to the preset thermal infrared image includes: identifying a characteristic thermal infrared image with the definition being greater than a preset threshold value based on the definition of each preset thermal infrared image, and determining a characteristic zoom parameter and a characteristic focusing parameter corresponding to the characteristic thermal infrared image; and acquiring characteristic information of the monitored scene, and corresponding the characteristic information with the characteristic zoom parameter and the characteristic focusing parameter.
The definition of the monitoring scene obtained in the traditional technical scheme is not high, as shown in fig. 3, so that the condition of great temperature measurement deviation occurs, and the temperature monitoring is disabled. Therefore, when the monitoring scene is subjected to infrared shooting, the data parameters of the thermal imager with the highest definition need to be determined, namely the characteristic zoom parameter and the characteristic focusing parameter with the highest definition need to be determined.
Specifically, after obtaining each preset zoom parameter and a preset thermal infrared image under a preset focusing parameter, comparing the definition of each thermal infrared image with a preset threshold, taking the preset thermal infrared image with the definition meeting the requirement as a characteristic thermal infrared image, taking the zoom parameter under the condition as a characteristic zoom parameter, and taking the focusing parameter as a characteristic focusing parameter. Illustratively, the most clear of the plurality of preset thermal infrared images may be taken as the characteristic data parameter.
In one manner of determining the highest definition thermal infrared image, please refer to fig. 4-6. The image focusing operation is performed manually, the monitored scene is placed at a significant position in the picture, the focal length position is adjusted to be the clearest, and parameters of the position are recorded as characteristic data parameters and are used as a comparison template as shown in fig. 4. Then, the outline of the key part of the monitored scene can be marked on the template, and can be various shapes such as a polygon, as shown in fig. 5. A marker line is placed at a selected appropriate location on the outline of the device where the key has been marked on the template, where the marker line must intersect the outline and be placed at a location where there is a distinct image outline boundary, as shown in fig. 6. And (3) taking the intersection point of the contour line and the mark line as the center, extracting the level value width of 5 pixels around, and determining whether the definition meets the requirement according to the level value.
In this embodiment, for a plurality of preset thermal infrared images acquired under different parameters of the thermal imager, the thermal infrared images are selected as characteristic thermal infrared images meeting the definition requirement, and the data parameters of the thermal imager at this time are taken as characteristic data parameters, including characteristic zoom parameters and characteristic focusing parameters. After the characteristic information of the target monitoring scene is determined, the definition of the thermal infrared image acquired by the thermal imager under the characteristic zoom parameter and the characteristic focusing parameter can meet the requirements. The characteristic zoom parameter and the characteristic focusing parameter are determined by acquiring a plurality of preset thermal infrared images and screening through definition, so that the efficiency is improved, and the thermal infrared images meeting the definition requirement can be acquired.
In one embodiment, acquiring a monitoring image of a thermal imager under a target data parameter includes: acquiring an image to be registered, which is obtained by a thermal imager under a target data parameter, and acquiring a preset thermal infrared image corresponding to the target data parameter; acquiring a preset contour in a preset thermal infrared image, and establishing a first mark area with a preset number of preset areas on the preset contour according to a preset distance; traversing the image to be registered, sequentially determining a second mark area consistent with each first mark area pixel, and determining a registration contour in the image to be registered according to the second mark areas; and deforming the image to be registered, aligning the registration contour with the preset contour, and obtaining the monitoring image under the target data parameters.
In order to make the monitoring image acquired by the thermal imager under the target data parameters accurate, in one possible implementation, the alignment of the preset thermal infrared image and the image to be registered comprises the following steps:
a. and taking the preset thermal infrared image as a reference image and taking the image to be registered as an image to be processed.
b. Presetting a contour in a preset thermal infrared image, taking the preset contour of the preset thermal infrared image as a reference, and selecting 4 punctuation points on the periphery of the preset contour on average as 4 data characteristic points according to the preset contour as a calculation basis: s1, S2, S3, S4.
c. And taking a certain preset position as a center, selecting an infrared data block T with the length and the width of M from a preset thermal infrared image as a data calculation basis for calculating similarity measurement, wherein the value of M is 21 pixels.
d. And calculating a data block with highest similarity with the T data block in the image to be registered by adopting a global searching method, wherein the calculation formula is as follows:
wherein T (s, T) represents an infrared data block with the length and width of M taking the position of a coordinate (i, j) as the upper left corner in infrared heat map data to be processed, wherein the value range of i is [1, M-M+1], and the value range of j is [1, n-M+1]; m is the infrared heat map data width to be processed, and n is the infrared heat map data height to be processed.
Taking (i, j) as the upper left corner in an image to be registered, taking a subgraph with the size of M multiplied by M, and calculating the similarity between the subgraph and a first mark region in a preset thermal infrared image; traversing the whole search graph, and finding out the sub-graph most similar to the first marked area from all the sub-graphs which can be obtained as a final matching result. The similarity measure formula of the algorithm is as follows. The smaller the average absolute difference R (i, j) is, the more similar it is, so that only the smallest R (i, j) needs to be found to determine the matched sub-graph position, i.e. the determined second marker region:
e. Counting the minimum value in all R (i, j), wherein the second marked area where the value is located is the position point on the to-be-processed to-be-registered image matched with the characteristic temperature point in the preset thermal infrared image, and repeating the steps c to d to obtain the target characteristic point positions T1, T2, T3 and T4 respectively.
f. And calculating whether the distance between the point S1 and the point S2, the point S3 and the point S4 is within 3 pixel points from the distance error between the point T1 and the point T2, the point T3 and the point T4 respectively, and if the distance errors are met, confirming that the point S1 is a matching alignment point of the preset thermal infrared image and the image to be registered, thereby confirming a second mark area consistent with the first mark area.
g. According to the positions of the four points T1, T2, T3 and T4, and according to a preset contour in a preset thermal infrared image, determining a registration contour of a sleeve in the image to be registered, and matching the preset contour with the registration contour, namely realizing registration, so that a monitoring image acquired by a thermal imager is accurate.
In this embodiment, a contour is preset in a preset thermal infrared image, and a plurality of first mark areas with an area equal to a preset area are taken from the preset contour. And traversing the second mark areas corresponding to the first mark areas in the image to be registered by using a frame with a preset area, thereby determining a registration contour according to the second mark areas and realizing the alignment of the preset thermal infrared image and the image to be registered. The thermal infrared image acquired by the thermal imager after alignment can be consistent with the outline of the preset thermal infrared image, so that the monitoring image can be regulated and controlled by adjusting the preset thermal infrared image.
In one embodiment, the imaging zoom lens group is controlled by a zoom stepper motor, the imaging focus lens group is controlled by a focus stepper motor, the target zoom parameter comprises a zoom rotation step number of the zoom stepper motor, and the target focus parameter comprises a focus rotation step number of the focus stepper motor; adjusting the imaging zoom lens group according to the target zoom parameter, adjusting the imaging focusing lens group according to the target focusing parameter, comprising: adjusting the variable-magnification stepping motor according to the variable-magnification rotation step number; and adjusting the focusing stepping motor according to the focusing rotation step number.
A stepper motor is a motor that converts an electrical pulse signal into a corresponding angular or linear displacement. Each time a pulse signal is input, the rotor rotates by an angle or further, the output angular displacement or linear displacement is proportional to the input pulse number, and the rotating speed is proportional to the pulse frequency. The stepper motor can be adjusted by rotating the number of steps.
The imaging zoom lens group is controlled by a zoom stepping motor, and the imaging focusing lens group is controlled by a focusing stepping motor. Specifically, the target magnification-varying parameter includes a magnification-varying rotation step number of the magnification-varying stepping motor, and the target focusing parameter includes a focusing rotation step number of the focusing stepping motor. And after the zoom rotation step number and the focusing rotation step number are determined, the thermal imager is regulated.
In one possible implementation, the rotation steps of the variable-magnification stepper motor are denoted as a and the rotation steps of the focusing stepper motor are denoted as B. The positive rotation time-varying multiple value of the variable-magnification stepping motor is increased, and the negative rotation time-varying multiple value is reduced; the focusing value increases when the focusing stepping motor rotates forward and decreases when the focusing stepping motor rotates backward. The current rotation steps of the zoom stepping motor and the focus stepping motor are read, and the values are set as C, D respectively. Judging whether the zooming is finished or not, judging whether C=A is true or not, and if so, finishing the zooming; if not, the zoom operation is executed. Specifically, if C > A, controlling the zoom stepping motor to reversely run; and if C is less than A, controlling the variable-magnification stepping motor to run in a forward rotation mode. Whether focusing is completed or not is judged, whether d=b is established or not is judged, and if yes, focusing is completed. If not, performing a focusing operation, specifically, if D > B, controlling a focusing stepping motor to perform a reverse operation; if D < B, the focusing stepping motor is controlled to run in forward rotation.
In this embodiment, the imaging zoom lens group of the thermal imager is controlled by a zoom stepper motor, and the imaging focusing lens group is controlled by a focusing stepper motor. The zoom stepping motor is adjusted by the zoom rotation step number in the target zoom parameter, and the focusing stepping motor is adjusted by the focusing rotation step number in the target focusing parameter, so that the thermal imager is adjusted by the stepping motor, and the thermal imager has higher accuracy.
In one embodiment, as shown in fig. 7, a thermal imager monitoring method, the thermal imager includes an imaging zoom lens group and an imaging focusing lens group, the thermal imager monitoring method includes the steps of:
s702, for each monitoring scene, adjusting preset data parameters of the thermal imager; the preset data parameters comprise preset zoom parameters of the imaging zoom lens group and preset focusing parameters of the imaging focusing lens group.
S704, acquiring a preset thermal infrared image of the corresponding monitored scene based on each preset zoom parameter and each preset focusing parameter.
S706, based on the definition of each preset thermal infrared image, identifying the characteristic thermal infrared image with the definition being larger than a preset threshold, and determining the characteristic zoom parameter and the characteristic focusing parameter corresponding to the characteristic thermal infrared image.
S708, acquiring characteristic information of the monitored scene, and corresponding the characteristic information with the characteristic zoom parameter and the characteristic focus parameter.
S710, acquiring characteristic information of a target monitoring scene, and determining target data parameters of a thermal imager corresponding to the target monitoring scene according to the characteristic information; the target data parameters include a target zoom parameter of the imaging zoom lens group and a target focus parameter of the imaging focus lens group.
S712, adjusting the zoom stepping motor according to the zoom rotation step number; adjusting a focusing stepping motor according to the focusing rotation step number; the imaging zoom lens group is controlled by a zoom stepping motor, the imaging focusing lens group is controlled by a focusing stepping motor, the target zoom parameter comprises the zoom rotation step number of the zoom stepping motor, and the target focusing parameter comprises the focusing rotation step number of the focusing stepping motor.
S714, acquiring an image to be registered, which is obtained by the thermal imager under the target data parameters, and acquiring a preset thermal infrared image corresponding to the target data parameters.
S716, acquiring a preset contour in the preset thermal infrared image, and establishing a preset number of first mark areas with preset areas on the preset contour according to the preset distance.
S718, traversing the image to be registered, sequentially determining a second mark region consistent with each first mark region pixel, and determining a registration contour in the image to be registered according to the second mark region.
S720, deforming the image to be registered, aligning the registration contour with the preset contour, and obtaining the monitoring image under the target data parameters.
In this embodiment, for each monitoring scene in the valve hall, preset thermal infrared images under different parameters are obtained by adjusting preset data parameters of the thermal imager. And screening out characteristic thermal infrared images meeting the definition requirements according to the definition of a plurality of preset thermal infrared images obtained from each monitoring scene, and determining characteristic zoom parameters and characteristic focusing parameters of a thermal imager corresponding to the characteristic thermal infrared images. And acquiring the characteristic information of each monitoring scene, and correspondingly enabling the characteristic information, the characteristic zoom parameter and the characteristic focusing parameter. At this time, after the feature information of the target monitoring scene is obtained, the target data parameters corresponding to the target monitoring scene can be determined, wherein the target data parameters comprise the target zoom parameter of the imaging zoom lens group and the target focusing parameter of the imaging focusing lens group, the target zoom parameter comprises the zoom rotation step number of the zoom stepping motor, and the target focusing parameter comprises the focusing rotation step number of the focusing stepping motor. The imaging zoom lens group is controlled by the zoom stepping motor, and the imaging focusing lens group is controlled by the focusing stepping motor, so that the imaging zoom lens group and the imaging focusing lens group can be adjusted by adjusting the zoom stepping motor and the focusing stepping motor. And then acquiring an image to be registered under the target data parameters through the thermal imager, determining a preset thermal infrared image corresponding to the target data parameters, and registering the image to be registered and the preset thermal infrared image to enable the monitoring image specification of the target monitoring scene acquired by the thermal imager to be consistent with the preset thermal infrared image.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a thermal imager monitoring device for realizing the above related thermal imager monitoring method. The implementation of the solution provided by the device is similar to that described in the above method, so the specific limitation of the embodiment of the thermal imager monitoring device or devices provided below may be referred to the limitation of the thermal imager monitoring method hereinabove, and will not be repeated herein.
In one embodiment, as shown in fig. 8, there is provided a thermal imager monitoring device 800, the thermal imager including an imaging zoom lens group and an imaging focus lens group, the thermal imager monitoring device 800 comprising: a target parameter determination module 802, a lens group adjustment module 804, and a monitoring image acquisition module 806, wherein:
the target parameter determining module 802 is configured to obtain feature information of a target monitoring scene, and determine a target data parameter of a thermal imager corresponding to the target monitoring scene according to the feature information; the target data parameters include a target zoom parameter of the imaging zoom lens group and a target focus parameter of the imaging focus lens group.
The lens group adjusting module 804 is configured to adjust the imaging zoom lens group according to the target zoom parameter, and adjust the imaging focusing lens group according to the target focusing parameter.
The monitoring image obtaining module 806 is configured to obtain a monitoring image obtained by the thermal imager under the target data parameter.
In one embodiment, the thermal imager monitoring device 800 further includes a characteristic data parameter determining module, configured to determine a characteristic data parameter of a thermal imager corresponding to each monitored scene; the characteristic data parameters comprise characteristic zoom parameters of the imaging zoom lens group and characteristic focusing parameters of the imaging focusing lens group.
In one embodiment, the characteristic data parameter determining module is specifically configured to: for each monitoring scene, adjusting preset data parameters of the thermal imager; the preset data parameters comprise preset zoom parameters of the imaging zoom lens group and preset focusing parameters of the imaging focusing lens group; acquiring a preset thermal infrared image of a corresponding monitoring scene based on each preset zoom parameter and each preset focusing parameter; and determining characteristic data parameters corresponding to the monitored scene according to the preset thermal infrared image.
In one embodiment, the characteristic data parameter determining module is specifically configured to: identifying a characteristic thermal infrared image with the definition being greater than a preset threshold value based on the definition of each preset thermal infrared image, and determining a characteristic zoom parameter and a characteristic focusing parameter corresponding to the characteristic thermal infrared image; and acquiring characteristic information of the monitored scene, and corresponding the characteristic information with the characteristic zoom parameter and the characteristic focusing parameter.
In one embodiment, the monitoring image acquisition module 806 is specifically configured to: acquiring an image to be registered, which is obtained by a thermal imager under a target data parameter, and acquiring a preset thermal infrared image corresponding to the target data parameter; acquiring a preset contour in a preset thermal infrared image, and establishing a first mark area with a preset number of preset areas on the preset contour according to a preset distance; traversing the image to be registered, sequentially determining a second mark area consistent with each first mark area pixel, and determining a registration contour in the image to be registered according to the second mark areas; and deforming the image to be registered, aligning the registration contour with the preset contour, and obtaining the monitoring image under the target data parameters.
In one embodiment, the imaging zoom lens group is controlled by a zoom stepper motor, the imaging focusing lens group is controlled by a focusing stepper motor, the target zoom parameter comprises the zoom rotation step number of the zoom stepper motor, and the target focusing parameter comprises the focusing rotation step number of the focusing stepper motor; the lens group adjusting module 804 is specifically configured to adjust the zoom stepper motor according to the zoom rotation step number; and adjusting the focusing stepping motor according to the focusing rotation step number.
The modules in the thermal imager monitoring device may be implemented in whole or in part by software, hardware, or a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a server, and the internal structure of which may be as shown in fig. 9. The computer device includes a processor, a memory, an Input/Output interface (I/O) and a communication interface. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface is connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer equipment is used for storing the characteristic information and the characteristic data parameter data corresponding to the monitoring environment. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a thermal imager monitoring method.
It will be appreciated by those skilled in the art that the structure shown in fig. 9 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the computer device to which the present application applies, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the method embodiments described above when the computer program is executed.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, implements the steps of the method embodiments described above.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as Static Random access memory (Static Random access memory AccessMemory, SRAM) or dynamic Random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (10)
1. A thermal imager monitoring method, wherein the thermal imager comprises an imaging zoom lens group and an imaging focusing lens group, the method comprising:
acquiring characteristic information of a target monitoring scene, and determining target data parameters of the thermal imager corresponding to the target monitoring scene according to the characteristic information; the target data parameters comprise target zoom parameters of the imaging zoom lens group and target focusing parameters of the imaging focusing lens group;
Adjusting the imaging zoom lens group according to the target zoom parameter, and adjusting the imaging focusing lens group according to the target focusing parameter;
and acquiring a monitoring image obtained by the thermal imager under the target data parameters.
2. The thermal imager monitoring method according to claim 1, wherein, in the obtaining of the feature information of the target monitoring scene, determining the target data parameter of the thermal imager corresponding to the target monitoring scene according to the feature information; before the target data parameters include the target zoom parameters of the imaging zoom lens set and the target focus parameters of the imaging focus lens set, the method further includes:
determining characteristic data parameters of the thermal imagers corresponding to each monitoring scene; the characteristic data parameters comprise characteristic zoom parameters of the imaging zoom lens group and characteristic focusing parameters of the imaging focusing lens group.
3. The thermal imager monitoring method according to claim 2, wherein the determining of the characteristic data parameters of the thermal imager corresponding to each monitoring scene; the characteristic data parameters comprise characteristic zoom parameters of the imaging zoom lens group and characteristic focusing parameters of the imaging focusing lens group, and the characteristic data parameters comprise:
For each monitoring scene, adjusting preset data parameters of the thermal imager; the preset data parameters comprise preset zoom parameters of the imaging zoom lens group and preset focusing parameters of the imaging focusing lens group;
acquiring a preset thermal infrared image of the corresponding monitoring scene based on each preset zoom parameter and each preset focusing parameter;
and determining the characteristic data parameters corresponding to the monitoring scene according to the preset thermal infrared image.
4. The thermal imager monitoring method according to claim 3, wherein said determining said characteristic data parameters corresponding to said monitored scene from said preset thermal infrared image comprises:
identifying a characteristic thermal infrared image with the definition being greater than a preset threshold value based on the definition of each preset thermal infrared image, and determining a characteristic zoom parameter and a characteristic focusing parameter corresponding to the characteristic thermal infrared image;
and acquiring characteristic information of the monitoring scene, and corresponding the characteristic information to the characteristic zoom parameter and the characteristic focusing parameter.
5. A thermal imager monitoring method as set forth in claim 3 wherein said acquiring a monitored image of said thermal imager under said target data parameters comprises:
Acquiring an image to be registered, which is obtained by the thermal imager under the target data parameters, and acquiring a preset thermal infrared image corresponding to the target data parameters;
acquiring a preset contour in the preset thermal infrared image, and establishing a first mark area with a preset number of preset areas on the preset contour according to a preset distance;
traversing the image to be registered, sequentially determining a second mark region consistent with each first mark region pixel, and determining a registration contour in the image to be registered according to the second mark region;
and deforming the image to be registered, and aligning the registration contour with the preset contour to obtain the monitoring image under the target data parameters.
6. The thermal imager monitoring method of claim 1, wherein the imaging magnification-varying lens group is controlled by a magnification-varying stepper motor, the imaging focusing lens group is controlled by a focusing stepper motor, the target magnification-varying parameter comprises a magnification-varying number of steps of rotation of the magnification-varying stepper motor, and the target focusing parameter comprises a focusing number of steps of rotation of the focusing stepper motor; the adjusting the imaging zoom lens group according to the target zoom parameter, and the adjusting the imaging focusing lens group according to the target focusing parameter, comprises:
According to the variable-magnification rotation step number, adjusting the variable-magnification stepping motor; and adjusting the focusing stepping motor according to the focusing rotation step number.
7. A thermal imager monitoring device, wherein the thermal imager comprises an imaging zoom lens group and an imaging focusing lens group, the device comprising:
the target parameter determining module is used for acquiring characteristic information of a target monitoring scene and determining target data parameters of the thermal imager corresponding to the target monitoring scene according to the characteristic information; the target data parameters comprise target zoom parameters of the imaging zoom lens group and target focusing parameters of the imaging focusing lens group;
the lens group adjusting module is used for adjusting the imaging zoom lens group according to the target zoom parameter and adjusting the imaging focusing lens group according to the target focusing parameter;
and the monitoring image acquisition module is used for acquiring a monitoring image obtained by the thermal imager under the target data parameters.
8. A thermal infrared imager, comprising:
the thermal imaging detector assembly comprises a thermal imaging lens and is used for acquiring infrared light signals and converting the infrared light signals into electric signals;
the imaging zoom lens group is used for adjusting the multiple of the thermal imaging lens and is controlled by a zoom stepping motor;
The imaging focusing lens group is used for adjusting the focal length of the thermal imaging lens and is controlled by the focusing stepping motor; and
and the control module is used for receiving the electric signals and controlling the zoom stepping motor and the focusing stepping motor.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 6 when the computer program is executed.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
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