CN108419045B - Monitoring method and device based on infrared thermal imaging technology - Google Patents
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- 238000001931 thermography Methods 0.000 title claims abstract description 109
- 238000012544 monitoring process Methods 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005516 engineering process Methods 0.000 title claims abstract description 26
- 230000002159 abnormal effect Effects 0.000 claims abstract description 100
- 230000005855 radiation Effects 0.000 claims abstract description 10
- 238000012806 monitoring device Methods 0.000 claims abstract description 6
- 238000007667 floating Methods 0.000 claims description 80
- 239000003086 colorant Substances 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 13
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
Abstract
A monitoring method and a monitoring device based on an infrared thermal imaging technology are used for solving the problems that the monitoring method in the prior art can only determine an abnormal monitoring area and cannot determine a monitoring point triggering abnormity in the abnormal monitoring area. The method comprises the following steps: the method comprises the steps of detecting infrared radiation of a monitoring area, determining a thermal imaging image corresponding to the monitoring area, monitoring temperature values of all pixel points in the thermal imaging image, determining abnormal pixel points corresponding to the temperature values meeting a preset alarm rule in the thermal imaging image, recording coordinate values of the abnormal pixel points in the thermal imaging image, converting the thermal imaging image into a first gray scale map, marking the abnormal pixel points in a preset color according to the coordinate values in the first gray scale map to obtain a second gray scale map, enabling a user to visually check the abnormal pixel points in the thermal imaging image corresponding to the monitoring area through the second gray scale map, and further determining a monitoring point triggering abnormity in the monitoring area according to the abnormal pixel points.
Description
Technical Field
The present application relates to the field of image monitoring, and in particular, to a monitoring method and apparatus based on an infrared thermal imaging technology.
Background
At present, various monitoring devices are widely applied to important fields such as military affairs, public security, fire protection, oil fields, forests, traffic management and the like which need all-weather real-time monitoring. With the development of photoelectric information, microelectronics, network communication, digital video, multimedia technologies and sensing technologies, modern high and new technologies almost have applications or are about to be applied in security monitoring systems. An infrared thermal imaging technology which develops rapidly in the modern sensing technology is also applied to a safety precaution system, the infrared thermal imaging technology detects infrared specific waveband signals of object heat radiation by using a photoelectric technology, the signals are converted into thermal imaging images which can be distinguished by human vision, the thermal imaging images represent the surface temperature distribution condition of the detected object, and people can monitor the surface temperature distribution condition of the object through the thermal imaging images of the object.
The existing monitoring method based on the infrared thermal imaging technology is generally applied to monitoring scenes sensitive to temperature, such as forest fire prevention monitoring scenes, machine room server monitoring scenes and the like.
Disclosure of Invention
The embodiment of the application provides a monitoring method and a monitoring device based on an infrared thermal imaging technology, which are used for solving the problems that the monitoring method in the prior art can only determine an abnormal monitoring area and cannot determine a monitoring point triggering an abnormality in the abnormal monitoring area.
The purpose of the application is realized by the following technical scheme:
in a first aspect, a monitoring method based on an infrared thermal imaging technology is provided, the method including: detecting infrared radiation of a monitored area, determining a thermal imaging image corresponding to the monitored area, monitoring temperature values of all pixel points in the thermal imaging image, determining abnormal pixel points corresponding to the temperature values meeting a preset alarm rule in the thermal imaging image, recording coordinate values of the abnormal pixel points in the thermal imaging image, converting the thermal imaging image into a first gray scale image, and identifying the abnormal pixel points in a preset color according to the coordinate values in the first gray scale image to obtain a second gray scale image.
In the embodiment of the application, abnormal pixel points in the monitoring area are determined by monitoring the temperature values of the pixel points in the thermal imaging image, the thermal imaging image is converted into the first gray scale image, the abnormal pixel points are identified by preset colors in the first gray scale image to obtain the second gray scale image, so that a user can visually check the abnormal pixel points in the thermal imaging image corresponding to the monitoring area through the second gray scale image, and then the abnormal monitoring points triggered in the monitoring area are determined according to the abnormal pixel points.
Preferably, the number of the preset alarm rules is at least two, the preset colors correspond to the preset alarm rules one to one, and different preset alarm rules correspond to different preset colors.
In the embodiment of the application, when the number of the alarm rules is at least two, the preset colors for identifying the abnormal pixel points correspond to the preset alarm rules one to one, and different preset alarm rules correspond to different preset colors, so that a user can visually judge which type of alarm rules the abnormal pixel points meet according to the colors of the abnormal pixel points.
Preferably, after obtaining the second gray scale map, the method further includes:
determining a minimum circumscribed rectangle of the second gray-scale image, and determining a length value and a width value of the minimum circumscribed rectangle; generating a suspension window in direct proportion to the minimum circumscribed rectangle according to the length value and the width value of the minimum circumscribed rectangle; and displaying the image in the minimum bounding rectangle in the floating window.
In the embodiment of the application, the second gray scale map is displayed in the suspension window, so that a user can more visually check the abnormal pixel points in the monitoring area corresponding to the second gray scale map through the suspension window.
Preferably, after obtaining the second gray scale map, the method further includes:
determining a minimum circumscribed rectangle of the second gray-scale image, and determining a length value and a width value of the minimum circumscribed rectangle; generating a floating window with a preset length value in advance; determining the width value of the floating window in equal proportion according to the length value and the width value of the minimum circumscribed rectangle and the preset length value of the floating window; according to the length value and the width value of the floating window, the minimum circumscribed rectangle is amplified or reduced in equal proportion; and displaying the enlarged or reduced image in the minimum bounding rectangle on the floating window.
In the embodiment of the application, the second gray scale map is displayed in the suspension window, so that a user can more visually check the abnormal pixel points in the monitoring area corresponding to the second gray scale map through the suspension window.
Preferably, the floating window includes a roller therein, and the roller is used for enlarging or reducing the image displayed in the floating window.
In the embodiment of the present application, the image displayed in the floating window may be enlarged or reduced through the roller, and certainly, the image displayed in the floating window may also be enlarged or reduced through other manners, which is not limited in the present application.
In a second aspect, a monitoring apparatus based on infrared thermal imaging technology is provided, where the apparatus includes a determining module and a processing module, where the determining module is configured to determine a thermal imaging image corresponding to a monitored area by detecting infrared radiation of the monitored area; the processing module is used for monitoring temperature values of all pixel points in the thermal imaging image, determining abnormal pixel points corresponding to the temperature values meeting a preset alarm rule in the thermal imaging image, recording coordinate values of the abnormal pixel points in the thermal imaging image, converting the thermal imaging image into a first gray scale map, and identifying the abnormal pixel points in a preset color according to the coordinate values in the first gray scale map to obtain a second gray scale map.
Preferably, the number of the preset alarm rules is at least two, the preset colors correspond to the preset alarm rules one to one, and different preset alarm rules correspond to different preset colors.
Preferably, the processing module is further configured to:
after a second gray scale map is obtained, determining a minimum circumscribed rectangle of the second gray scale map, and determining a length value and a width value of the minimum circumscribed rectangle; generating a suspension window in direct proportion to the minimum circumscribed rectangle according to the length value and the width value of the minimum circumscribed rectangle; and displaying the image in the minimum bounding rectangle in the floating window.
Preferably, the processing module is further configured to:
after a second gray scale map is obtained, determining a minimum circumscribed rectangle of the second gray scale map, and determining a length value and a width value of the minimum circumscribed rectangle; generating a floating window with a preset length value in advance; determining the width value of the floating window in equal proportion according to the length value and the width value of the minimum circumscribed rectangle and the preset length value of the floating window; according to the length value and the width value of the floating window, the minimum circumscribed rectangle is amplified or reduced in equal proportion; and displaying the enlarged or reduced image in the minimum bounding rectangle on the floating window.
Preferably, the floating window includes a roller therein, and the roller is used for enlarging or reducing the image displayed in the floating window.
In the above embodiment of the application, the abnormal pixel points in the monitoring area are determined by monitoring the temperature values of the pixel points in the thermal imaging image, the thermal imaging image is converted into the first gray scale image, the abnormal pixel points are identified by preset colors in the first gray scale image to obtain the second gray scale image, so that a user can visually check the abnormal pixel points in the thermal imaging image corresponding to the monitoring area through the second gray scale image, and then determine the abnormal triggering monitoring points in the monitoring area according to the abnormal pixel points.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart of a monitoring method based on an infrared thermal imaging technology according to an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating a second gray scale map according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of displaying a second gray scale map in a floating window according to an embodiment of the present disclosure;
fig. 4 is a flowchart illustrating a specific scenario monitoring provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a monitoring device based on an infrared thermal imaging technology according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to solve the problem that a monitoring method in the prior art can only determine an abnormal monitoring area and cannot determine a monitoring point triggering an abnormality in the abnormal monitoring area, the embodiment of the application provides a monitoring method based on an infrared thermal imaging technology.
Fig. 1 is a flowchart of a monitoring method based on an infrared thermal imaging technology according to an embodiment of the present application, and as shown in fig. 1, the monitoring method includes:
s101: and detecting the infrared radiation of the monitored area, and determining a thermal imaging image corresponding to the monitored area.
In the embodiment of the present application, the existing infrared thermal imaging technology may be adopted, and the thermal imaging image corresponding to the monitored area is determined by detecting the infrared radiation of the monitored area, which is achievable by the prior art, and the detailed description is not given in the present application.
S102: and monitoring the temperature values of all pixel points in the thermal imaging image.
In the embodiment of the application, the thermal imaging image can represent the surface temperature distribution condition of the monitored object in the monitoring area, and the surface temperature of the monitored object in the monitoring area can be judged by monitoring the temperature values of all the pixel points in the thermal imaging image.
S103: in the thermal imaging image, determining abnormal pixel points corresponding to temperature values meeting preset alarm rules, and recording coordinate values of the abnormal pixel points in the thermal imaging image.
In the embodiment of the application, the alarm rule of the monitoring area can be preset according to the requirement in practical application, the temperature value meeting the preset alarm rule is determined as the abnormal temperature value, the abnormal pixel point corresponding to the abnormal temperature value is determined in the thermal imaging image, and the coordinate value of the abnormal pixel point in the thermal imaging image is recorded for subsequent use.
S104: and converting the thermal imaging image into a first gray scale image, and identifying abnormal pixel points in the first gray scale image according to coordinate values by preset colors to obtain a second gray scale image.
The gradation is an order in which white and black are logarithmically divided into several levels, and is usually 256 levels, and an image represented by gradation is referred to as a gradation map.
In the embodiment of the application, the thermal imaging image is a color image with a preset color, the temperature of the surface of the monitored object in the monitoring area is reflected through the color depth and the color, the thermal imaging image is converted into the first gray scale image in the application, according to the coordinate value of the recorded abnormal pixel point in the thermal imaging image, the abnormal pixel point is identified by the preset color in the first gray scale image, the second gray scale image is obtained, the second gray scale image is an image with a black-white grade, and the abnormal pixel point passes through the preset color identification, so that a user can visually check the abnormal pixel point in the thermal imaging image corresponding to the monitoring area through the second gray scale image, and further determine the abnormal monitoring point triggered in the monitoring area according to the abnormal pixel point.
In the embodiment of the application, the preset alarm rule for the monitoring area may be one or more (where the plurality of alarm rules refers to two or more), when the preset alarm rules are at least two, the preset color corresponds to the preset alarm rule one to one, and different preset alarm rules correspond to different preset colors, so that a user can visually judge which type of alarm rule the abnormal pixel point satisfies according to the color of the abnormal pixel point. For example, assuming that three alarm rules are preset, namely an alarm rule a, an alarm rule B, and an alarm rule C, in the embodiment of the present application, different colors may be set for the different alarm rules a, B, and C, respectively, assuming that red is set for the alarm rule a, blue is set for the alarm rule B, and green is set for the alarm rule C. Supposing that in a thermal imaging image, an abnormal pixel point A corresponding to a temperature value meeting a preset alarm rule A, an abnormal pixel point B corresponding to a temperature value meeting an alarm rule B and an abnormal pixel point C corresponding to a temperature value meeting an alarm rule C are determined, coordinate values of the abnormal pixel point A, the abnormal pixel point B and the abnormal pixel point C in the thermal imaging image are recorded, the thermal imaging image is converted into a first gray scale map, after the thermal imaging image is converted into the first gray scale map, the abnormal pixel point A, the abnormal pixel point B and the abnormal pixel point C are identified in the first gray scale map according to the recorded coordinate values of the abnormal pixel point A, the abnormal pixel point B and the abnormal pixel point C in the thermal imaging image so as to obtain a second gray scale map according to preset colors respectively corresponding to the alarm rule A, the alarm rule B and the alarm rule C, referring to fig. 2, the abnormal pixel point a is identified by red, the abnormal pixel point B is identified by blue, and the abnormal pixel point C is identified by green in the first gray scale corresponding to the monitoring area, so that the user can conveniently judge that the abnormal pixel point a satisfies the alarm rule a, the abnormal pixel point B satisfies the alarm rule B, and the abnormal pixel point C satisfies the alarm rule C according to the color of the abnormal pixel point.
In the embodiment of the application, because a plurality of monitoring areas are usually monitored simultaneously in practical application, after some monitoring areas are abnormal, a user needs to check the abnormal monitoring areas in the plurality of monitoring areas, which is not very intuitive and has poor user experience.
In the embodiment of the present application, the following two methods for displaying the second grayscale image in the floating window are proposed.
In the first embodiment, after the second gray scale map is obtained, the minimum bounding rectangle of the second gray scale map is determined, the length value and the width value of the minimum bounding rectangle are determined, a floating window in direct proportion to the minimum bounding rectangle is generated according to the length value and the width value of the minimum bounding rectangle, and an image in the minimum bounding rectangle is displayed in the floating window.
In the embodiment of the present application, since the monitored area actually monitored is usually an irregular area (a circular area, a triangular area, an irregular polygonal area, etc.), and the floating window is a rectangle, before the second grayscale map corresponding to the abnormal monitored area is displayed on the floating window, the second grayscale map needs to be processed. According to the method and the device, the length value and the width value of the minimum external rectangle can be determined by determining the minimum external rectangle of the second gray scale map, and then the suspension window in direct proportion to the minimum external rectangle can be generated according to the length value and the width value of the minimum external rectangle, so that the size of the suspension window can be determined according to the minimum external rectangle of the second gray scale map, and then a user can more visually check abnormal pixel points in a monitoring area corresponding to the second gray scale map through the suspension window.
It should be noted that, when the floating window proportional to the minimum circumscribed rectangle is generated in the present application, the size relationship between the floating window and the minimum circumscribed rectangle is not limited, for example, the generated floating window may be larger than the minimum circumscribed rectangle, or the generated floating window may be smaller than the minimum circumscribed rectangle, which may be determined according to the size of the display screen in the practical application.
Fig. 3 is a schematic diagram illustrating a second grayscale map displayed in a floating window according to an embodiment of the present disclosure, and as shown in fig. 3, the floating window is displayed on the second grayscale map corresponding to an original monitoring area, of course, the position of the floating window is not limited in the present disclosure, the floating window is usually displayed near an abnormal monitoring area, and if there are multiple abnormal monitoring areas, the floating window generated for each abnormal monitoring area is displayed near the corresponding monitoring area, so that a user can more conveniently know which monitoring area is abnormal.
In a second embodiment, after the second gray scale map is obtained, a minimum circumscribed rectangle of the second gray scale map is determined, a length value and a width value of the minimum circumscribed rectangle are determined, a floating window with a preset length value is generated in advance, the width value of the floating window is determined in equal proportion according to the length value and the width value of the minimum circumscribed rectangle and the preset length value of the floating window, the minimum circumscribed rectangle is enlarged or reduced in equal proportion according to the length value and the width value of the floating window, and an image in the enlarged or reduced minimum circumscribed rectangle is displayed in the floating window.
It should be noted that, the preset length value of the floating window in the second embodiment may be determined according to actual requirements, for example, a length suitable for the size of the current screen may be determined according to the size of the current display screen, and the application is not limited in this application.
It should be further noted that, the width value of the floating window is determined in equal proportion according to the length value and the width value of the minimum circumscribed rectangle and the preset length value of the floating window, and the following formula can be adopted:
nW＝nL*xW/yL；
wherein n L is a preset length value of the floating window, y L is a length value of the minimum bounding rectangle of the second gray scale image, xW is a width value of the minimum bounding rectangle of the second gray scale image, and nW is a width value of the floating window.
According to the second implementation mode for displaying the second gray scale map in the floating window, the floating window with the preset length value is generated in advance according to the size of the second gray scale map in an equal proportion mode, the width value of the floating window is determined in an equal proportion mode according to the length value and the width value of the minimum external rectangle of the second gray scale map and the preset length value of the floating window, the minimum external rectangle is amplified or reduced in an equal proportion mode according to the length value and the width value of the floating window, the size of the minimum external rectangle of the second gray scale map is adjusted in an equal proportion mode according to the preset length value of the floating window, the floating window can display minimum external rectangle images with different sizes, and a user can visually check abnormal pixel points in a monitoring area corresponding to the second gray scale map through the floating window.
In the embodiment of the application, a roller may be disposed in the floating window for enlarging or reducing the image displayed in the floating window.
It should be noted that, in the present application, the image displayed in the floating window may be enlarged or reduced through the scroll wheel, and of course, the image displayed in the floating window may also be enlarged or reduced through other manners, which is not limited in the present application.
In the embodiment of the present application, a monitoring method based on an infrared thermal imaging technology provided by the present application is explained below with a specific example.
In the embodiment of the present application, it is assumed that servers in all buildings in one campus are monitored, so that the whole campus can be used as a monitoring area, infrared radiation of the campus is detected, a thermal imaging image corresponding to the campus is determined, and some positions in the whole campus are not concerned by a user according to user requirements, for example, areas such as a road and a parking lot in the campus are not concerned by the user, so that the user can select an area corresponding to a building concerned by the user in the whole campus as the monitoring area according to actual requirements. Assuming that there are four buildings, namely building 1, building 2, building 3, and building 4, in the entire park, the user may use the area 1, area 2, area 3, and area 4 corresponding to the four buildings as the monitoring areas.
It should be noted that, in the present application, before monitoring is performed, the area 1, the area 2, the area 3, and the area 4 may be selected as monitoring areas in a campus, and it is needless to say that after a thermal imaging image of the whole campus is determined, the thermal imaging image 1, the thermal imaging image 2, the thermal imaging image 3, and the thermal imaging image 4 corresponding to the area 1, the area 2, the area 3, and the area 4 are selected as monitoring objects in the thermal imaging image.
Executing the monitoring method provided in fig. 1 of the present application for the monitoring area corresponding to each building, as shown in fig. 4, after monitoring each building is started, monitoring temperature values of all pixel points in the thermal imaging image 1, the thermal imaging image 2, the thermal imaging image 3, and the thermal imaging image 4 corresponding to each building respectively, determining whether there is an abnormal temperature value, if there is no abnormal temperature value, continuing monitoring until there is an abnormal temperature value, if there is an abnormal temperature value, determining abnormal pixel points corresponding to temperature values satisfying a preset alarm rule corresponding to each monitoring area in the thermal imaging image 1, the thermal imaging image 2, the thermal imaging image 3, and the thermal imaging image 4 respectively, where the preset alarm rules are set for different monitoring areas respectively, for example, assuming that two different alarm rules are set for the area 1 in advance, if the temperature value of the first alarm rule is greater than 90 ℃ and the temperature value of the second alarm rule is less than 10 ℃, the pixel points meeting the first alarm rule or the second alarm rule are determined as abnormal pixel points if the pixel points meeting the first alarm rule or the second alarm rule are monitored in the area 1. After determining abnormal pixel points in the thermal imaging image 1, the thermal imaging image 2, the thermal imaging image 3 and the thermal imaging image 4 respectively, recording coordinate values of the abnormal pixel points in the thermal imaging image corresponding to the abnormal pixel points, converting the thermal imaging image including the abnormal pixel points into a first gray scale map, marking the abnormal pixel points in the first gray scale map in preset colors according to the recorded coordinate values to obtain a second gray scale map, and displaying the second gray scale map in a suspension window by adopting one of two implementation methods provided by the application.
In the present application, the thermal imaging image may be converted into the second gray scale map on the original image of the thermal imaging image corresponding to the monitored area, or the thermal imaging image may be converted into the second gray scale map after the thermal imaging image is displayed in the floating window, which is not limited in the present application.
Based on the same inventive concept as the monitoring method based on the infrared thermal imaging technology provided above, the embodiment of the present application further provides a monitoring device based on the infrared thermal imaging technology, and the composition and the use of the device will be described in detail below.
Fig. 5 is a schematic structural diagram of a monitoring apparatus based on an infrared thermal imaging technology according to an embodiment of the present invention, as shown in fig. 5, the monitoring apparatus includes a determining module 101 and a processing module 102, where:
the determining module 101 is configured to determine a thermal imaging image corresponding to a monitored area by detecting infrared radiation of the monitored area.
The processing module 102 is configured to monitor temperature values of all pixel points in the thermal imaging image after the determining module 101 determines the thermal imaging image corresponding to the monitored area, determine, in the thermal imaging image, an abnormal pixel point corresponding to a temperature value that meets a preset alarm rule, record a coordinate value of the abnormal pixel point in the thermal imaging image, convert the thermal imaging image into a first grayscale image, and identify, in the first grayscale image, the abnormal pixel point in a preset color according to the coordinate value to obtain a second grayscale image.
Preferably, the number of the preset alarm rules is at least two, the preset colors correspond to the preset alarm rules one to one, and different preset alarm rules correspond to different preset colors.
Preferably, the processing module 102 is further configured to:
after a second gray scale map is obtained, determining a minimum circumscribed rectangle of the second gray scale map, and determining a length value and a width value of the minimum circumscribed rectangle; generating a suspension window in direct proportion to the minimum circumscribed rectangle according to the length value and the width value of the minimum circumscribed rectangle; and displaying the image in the minimum bounding rectangle in the floating window.
Preferably, the processing module 102 is further configured to:
after a second gray scale map is obtained, determining a minimum circumscribed rectangle of the second gray scale map, and determining a length value and a width value of the minimum circumscribed rectangle; generating a floating window with a preset length value in advance; determining the width value of the floating window in equal proportion according to the length value and the width value of the minimum circumscribed rectangle and the preset length value of the floating window; according to the length value and the width value of the floating window, the minimum circumscribed rectangle is amplified or reduced in equal proportion; and displaying the enlarged or reduced image in the minimum bounding rectangle on the floating window.
Preferably, the floating window includes a roller therein, and the roller is used for enlarging or reducing the image displayed in the floating window.
In the above embodiment of the application, the abnormal pixel points in the monitoring area are determined by monitoring the temperature values of the pixel points in the thermal imaging image, the thermal imaging image is converted into the first gray scale image, the abnormal pixel points are identified by preset colors in the first gray scale image to obtain the second gray scale image, so that a user can visually check the abnormal pixel points in the thermal imaging image corresponding to the monitoring area through the second gray scale image, and then determine the abnormal triggering monitoring points in the monitoring area according to the abnormal pixel points.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (8)
1. A monitoring method based on an infrared thermal imaging technology is characterized by comprising the following steps:
detecting infrared radiation of a monitored area, and determining a thermal imaging image corresponding to the monitored area;
monitoring temperature values of all pixel points in the thermal imaging image;
determining abnormal pixel points corresponding to temperature values meeting preset alarm rules in the thermal imaging image, and recording coordinate values of the abnormal pixel points in the thermal imaging image;
converting the thermal imaging image into a first gray scale image, and identifying the abnormal pixel points in a preset color in the first gray scale image according to the coordinate values to obtain a second gray scale image;
the preset alarm rules are at least two, the preset colors correspond to the preset alarm rules one to one, and different preset alarm rules correspond to different preset colors.
2. The method of claim 1, after obtaining the second gray scale map, further comprising:
determining a minimum circumscribed rectangle of the second gray-scale image, and determining a length value and a width value of the minimum circumscribed rectangle;
generating a suspension window in direct proportion to the minimum circumscribed rectangle according to the length value and the width value of the minimum circumscribed rectangle;
and displaying the image in the minimum bounding rectangle in the floating window.
3. The method of claim 1, after obtaining the second gray scale map, further comprising:
determining a minimum circumscribed rectangle of the second gray-scale image, and determining a length value and a width value of the minimum circumscribed rectangle;
generating a floating window with a preset length value in advance;
determining the width value of the floating window in equal proportion according to the length value and the width value of the minimum circumscribed rectangle and the preset length value of the floating window;
according to the length value and the width value of the floating window, the minimum circumscribed rectangle is amplified or reduced in equal proportion;
and displaying the enlarged or reduced image in the minimum bounding rectangle on the floating window.
4. The method of claim 3, wherein the floating window includes a scroll wheel therein for enlarging or reducing the image displayed in the floating window.
5. A monitoring device based on an infrared thermal imaging technology is characterized by comprising a determining module and a processing module;
the determining module is used for determining a thermal imaging image corresponding to a monitoring area by detecting infrared radiation of the monitoring area;
the processing module is used for monitoring temperature values of all pixel points in the thermal imaging image, determining abnormal pixel points corresponding to the temperature values meeting a preset alarm rule in the thermal imaging image, recording coordinate values of the abnormal pixel points in the thermal imaging image, converting the thermal imaging image into a first gray scale map, and identifying the abnormal pixel points in a preset color according to the coordinate values in the first gray scale map to obtain a second gray scale map; the preset alarm rules are at least two, the preset colors correspond to the preset alarm rules one to one, and different preset alarm rules correspond to different preset colors.
6. The apparatus of claim 5, wherein the processing module is further to:
after a second gray scale map is obtained, determining a minimum circumscribed rectangle of the second gray scale map, and determining a length value and a width value of the minimum circumscribed rectangle;
generating a suspension window in direct proportion to the minimum circumscribed rectangle according to the length value and the width value of the minimum circumscribed rectangle;
and displaying the image in the minimum bounding rectangle in the floating window.
7. The apparatus of claim 5, wherein the processing module is further to:
after a second gray scale map is obtained, determining a minimum circumscribed rectangle of the second gray scale map, and determining a length value and a width value of the minimum circumscribed rectangle;
generating a floating window with a preset length value in advance;
determining the width value of the floating window in equal proportion according to the length value and the width value of the minimum circumscribed rectangle and the preset length value of the floating window;
according to the length value and the width value of the floating window, the minimum circumscribed rectangle is amplified or reduced in equal proportion;
and displaying the enlarged or reduced image in the minimum bounding rectangle on the floating window.
8. The apparatus of claim 7, wherein the floating window includes a scroll wheel therein, the scroll wheel for enlarging or reducing an image displayed in the floating window.
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