CN106485868B - Monitoring method, the monitoring server of system and fire behavior of fire behavior - Google Patents
Monitoring method, the monitoring server of system and fire behavior of fire behavior Download PDFInfo
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- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
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Abstract
The invention discloses the monitoring servers of a kind of monitoring method of fire behavior, system and fire behavior.Wherein, this method comprises: reading the thermal image in the target area that current time monitors and collected monitoring data；Suspicious fire source threshold value is calculated according to the sum of the grayscale values monitoring data of thermal image；When thermal image is greater than fire source threshold value there are the gray value of any one or more pixels, determine that there are suspicious fire source regions in target area；Read the thermal image of the target area monitored after current time；Extract the thermal image for the target area that current time monitors, or the dynamic parameter in the suspicious fire source region in the thermal image of the target area monitored after current time, after judging whether dynamic parameter meets the first preset condition, the fire behavior information of target area is obtained.The present invention solves in the prior art during monitoring fire behavior, due to the influence of external condition, causes to monitor the low technical problem of fire behavior accuracy rate.
Description
Technical field
The present invention relates to monitoring field, the monitoring in particular to a kind of monitoring method of fire behavior, system and fire behavior is taken
Business device.
Background technique
Currently, can all cause forest fire because of nature and artificial origin every year, large stretches of forests is burnt.Most forest fires
It is all finally to lead to large area fire because small fire fails to find in time, save.Therefore, how in time, accurate and effective spy
The fire behavior for surveying early stage, is of great significance.
Mainly include following several modes in existing monitoring method: 1. utilize satellite monitoring forest fires, still, due to defending
Star Forest Fire Monitoring is passed by number by satellite and its resolution ratio is limited, and the rate of false alarm of monitoring result is higher, is not suitable for forest fires
Real time monitoring.2. fire behavior is monitored using visible light camera, due to that could pass through visible after forest vigorous combustion gets up
Light video camera monitors smog, and smog drift with the wind, and the smog monitored may deviate ignition point, and visible light is taken the photograph
Detectivity of the camera at night will be greatly reduced, it is difficult to realize 24 hours real-time monitorings.Therefore, using visible light camera
Smog is monitored to judge the method for fire behavior, it may have significant limitation.3. fire behavior is monitored using thermal imaging system, due to thermal imaging system
It is the equipment that the infra-red radiation of object is imaged, as long as the temperature of object is greater than absolute zero, can all there is infra-red radiation,
Therefore, forest fire is monitored using thermal infrared imager may be implemented 24 hours real-time monitorings, not only be easy discovery early fire,
And it can also find the hidden fire that visible light can not detect.
But using thermal imaging system monitoring fire behavior, there are the following problems, and the infra-red radiation of distant objects is by atmospheric transmittance shadow
Sound is larger, and the principal element for influencing atmospheric transmittance is distance, environment temperature, ambient humidity and visibility.Same object exists
Varying environment, the heat radiation under different distance are different, and therefore, accurately to detect the forest fires of distant place, are really achieved early stage
Fire alarm, it is necessary to obtain current weather condition and monitoring position at a distance from fire source.Currently, most of use thermal imaging system
The infrared forest fire detection system that thermal image is established is acquired, determines whether fire behavior according only to single threshold value, it is difficult to be adapted to each
The variation of kind climate and weather condition also has a small number of infrared forest fire detection systems to add numerical map, for obtaining thermal imaging system week
The range information enclosed, but without obtaining current weather condition information.
For above-mentioned during monitoring fire behavior, due to the influence of external condition, cause monitoring fire behavior accuracy rate low
Problem, currently no effective solution has been proposed.
Summary of the invention
The embodiment of the invention provides the monitoring servers of a kind of monitoring method of fire behavior, system and fire behavior, at least to solve
Certainly in the prior art during monitoring fire behavior, due to the influence of external condition, cause to monitor the low technology of fire behavior accuracy rate
Problem.
According to an aspect of an embodiment of the present invention, a kind of monitoring method of fire behavior is provided, comprising: read when current
The thermal image for the target area that quarter monitors and collected monitoring data, wherein monitoring data include at least: monitoring position
It sets at a distance from target area and weather information；Suspicious fire source threshold is calculated according to the sum of the grayscale values monitoring data of thermal image
Value；When being greater than fire source threshold value there are the gray value of any one or more pixels in thermal image, determines in target area and deposit
In suspicious fire source region；When determining in target area there are when suspicious fire source region, reads and monitored after current time
The thermal image of target area；The thermal image for the target area that current time monitors is extracted, or is monitored after current time
To target area thermal image in suspicious fire source region dynamic parameter, and it is default to judge whether dynamic parameter meets first
Condition；When dynamic parameter meets the first preset condition, the fire behavior information of target area is obtained.
Further, the step of suspicious fire source threshold value being calculated according to the sum of the grayscale values monitoring data of thermal image include:
The background gray levels of thermal image are calculated according to the gray value of pixel each in thermal image；According to monitoring position and target area
Distance and weather information calculate the atmospheric transmittance at current time；Planimeter is carried out to atmospheric transmittance and default gray threshold
It calculates, the calculated result and background gray levels that quadrature is calculated carry out summation operation, obtain suspicious fire source threshold value.
Further, according to monitoring position at a distance from target area and weather information calculate current time atmosphere it is saturating
The step of crossing rate includes: the attenuation coefficient that current time is calculated according to weather information, and weather information includes at least: environment temperature,
Ambient humidity and visibility；It is by attenuation coefficient and apart from progress quadrature operation, the result of quadrature operation is saturating as atmosphere is calculated
Cross the values of powers of the power function of rate；Atmospheric transmittance is calculated by power function.
Further, the dynamic parameter in suspicious fire source region includes at least following any one or more parameters: suspicious fire
The boundary of source region, the gray-value variation in suspicious fire source region, the fluctuation direction in suspicious fire source region and suspicious fire source region
Vibration frequency judge whether dynamic parameter meets in the case where the dynamic parameter in suspicious fire source region includes multiple parameters
The step of first preset condition includes:, when any one or two dynamic parameters meet the following contents, to determine in thermal image
Dynamic parameter meets the first preset condition: the boundary in the suspicious fire source region in thermal image is irregular image；In thermal image
The gray-value variation in suspicious fire source region is successively to successively decrease from bottom to up；The fluctuation direction in the suspicious fire source region in thermal image is
Same direction；The vibration frequency in the suspicious fire source region in thermal image reaches predeterminated frequency range.
Further, the dynamic parameter in suspicious fire source region includes: the boundary in suspicious fire source region, suspicious fire source region
Gray-value variation, the fluctuation direction in suspicious fire source region and the vibration frequency in suspicious fire source region, wherein judge dynamic parameter
The step of whether meeting the first preset condition includes: in thermal image, when dynamic parameters any one or more in dynamic parameter
When meeting the following contents, determine that dynamic parameter meets the first preset condition: the boundary in the suspicious fire source region in thermal image is non-
Regular image；The gray-value variation in the suspicious fire source region in thermal image is successively to successively decrease from bottom to up；It is suspicious in thermal image
The fluctuation direction in fire source region is same direction；The vibration frequency in the suspicious fire source region in thermal image reaches predeterminated frequency model
It encloses.
Further, before the thermal image for reading the target area monitored after current time, method includes: control
Thermal imaging system processed continuously acquires the multiframe thermal image in target area.
Further, obtain target area fire behavior information after, method further include: according to the operation information of holder with
And the location information of fire behavior is calculated according to default computation model at a distance from target area for monitoring position；Wherein, thermal imaging system
And visible light camera is installed on holder, thermal imaging system is installed on holder, and the operation information of holder includes at least: holder
Longitudinal axis angle, the longitude and latitude of the horizontal axis angle holder of the current field of holder and the height of holder of current field.
Further, in the location information that fire behavior is calculated according to default computation model, and in visible images subscript
Before knowing coordinate position out, method further include: read the visible images that visible light camera takes；It will be seen that light image with
And thermal image carries out compression processing, obtains image data；By image data, operation information together with holder and monitoring position with
The distance of target area, is sent to warning device, so that warning device determines the location information of fire behavior, and on visible images
Identify coordinate position.
According to another aspect of an embodiment of the present invention, a kind of monitoring server of fire behavior is additionally provided, comprising: first reads
Unit, for reading the thermal image in the target area that current time monitors, and in current time collected monitoring number
According to, wherein monitoring data include at least: monitoring position is at a distance from target area and weather information；First computing unit is used
Suspicious fire source threshold value is calculated in the sum of the grayscale values monitoring data according to thermal image；First determination unit, for working as thermal image
It is middle there are the gray value of any one or more pixels be greater than fire source threshold value when, determine that there are suspicious zone of origin in target area
Domain；Second reading unit, for reading and being monitored after current time when determining in target area there are when suspicious fire source region
The thermal image for the target area arrived；Judging unit, for extracting the thermal image for the target area that current time monitors, Huo Zhe
The dynamic parameter in the suspicious fire source region in the thermal image of the target area monitored after current time, and judge dynamic parameter
Whether first preset condition is met；Second determination unit, for determining target area when dynamic parameter meets the first preset condition
There are fire behaviors in domain.
Further, the first computing unit includes: the first computing module, for the ash according to pixel each in thermal image
The background gray levels of angle value calculating thermal image；Second computing module, for according to monitoring position at a distance from target area and
The atmospheric transmittance at weather information calculating current time；Third computing module, for atmospheric transmittance and default gray threshold
Quadrature calculating is carried out, the calculated result and background gray levels that quadrature is calculated carry out read group total, obtain suspicious fire source threshold value.Into
One step, the second computing module includes: the first sub- computing module, for calculating the decaying system at current time according to weather information
Number, weather information include at least: environment temperature, ambient humidity and visibility；Second sub- computing module, for by attenuation coefficient with
Distance carries out quadrature operation, using the result of quadrature operation as the values of powers for the power function for calculating atmospheric transmittance；Third calculates
Module, for atmospheric transmittance to be calculated by power function.
Further, the dynamic parameter in suspicious fire source region includes at least following any one or more parameters: suspicious fire
The boundary of source region, the gray-value variation in suspicious fire source region, the fluctuation direction in suspicious fire source region and suspicious fire source region
Vibration frequency, in the case where the dynamic parameter in suspicious fire source region includes multiple parameters, judging unit includes: the first judgement
Module when any one or two dynamic parameters meet the following contents, determines that dynamic parameter meets the in thermal image
One preset condition: the boundary in the suspicious fire source region in thermal image is irregular image；Suspicious fire source region in thermal image
Gray-value variation is successively to successively decrease from bottom to up；The fluctuation direction in the suspicious fire source region in thermal image is same direction；Thermal map
The vibration frequency in the suspicious fire source region as in reaches predeterminated frequency range.
Further, the dynamic parameter in suspicious fire source region includes: the boundary in suspicious fire source region, suspicious fire source region
Gray-value variation, the fluctuation direction in suspicious fire source region and the vibration frequency in suspicious fire source region, wherein judging unit packet
Include: the second judgment module is used in multiframe thermal image, when any one or more dynamic parameters meet the following contents, really
Determine dynamic parameter and meet the first preset condition: the boundary in the suspicious fire source region in thermal image is irregular image；In thermal image
Suspicious fire source region gray-value variation be successively successively decrease from bottom to up；The fluctuation direction in the suspicious fire source region in thermal image
For same direction；The vibration frequency in the suspicious fire source region in thermal image reaches predeterminated frequency range.
Further, server further include: control unit continuously acquires multiframe in target area for controlling thermal imaging system
Thermal image.
Further, server further include: third computing unit, for the operation information of holder and monitoring position and mesh
The distance for marking region, the location information of fire behavior is calculated according to default computation model；Wherein, thermal imaging system and visible image capturing
Machine is installed on holder, and the operation information of holder includes at least: the current field of the longitudinal axis angle of the current field of holder, holder
Horizontal axis angle, the longitude and latitude of holder and the height of holder.
Further, server further include: third reading unit, the visible light taken for reading visible light camera
Image；Data processing unit, for it will be seen that light image and thermal image progress compression processing, obtain image data；Data hair
Unit is sent, for by image data, operation information and monitoring position together with holder to be sent to report at a distance from target area
Alarm device so that warning device determines the location information of fire behavior, and identifies coordinate position on visible images.
Another aspect according to an embodiment of the present invention additionally provides a kind of monitoring system of fire behavior, comprising: thermal imaging system is used
Thermal image in monitoring objective region；Rangefinder, for measuring monitoring position at a distance from target area；Meteorological sensor,
For acquiring current weather information；Controller, for the thermal map according to thermal imaging system in the target area that current time monitors
As, stadia surveying to detection position is at a distance from target area and the collected weather information of meteorological sensor calculates
To suspicious fire source threshold value, when being greater than suspicious fire source threshold value there are the gray value of any one or more pixels in thermal image,
Determine that there are suspicious fire source regions in target area, and in the thermal image for reading the target area monitored after current time
Later, the thermal image for the target area that current time monitors, or the target area monitored after current time are extracted
Thermal image in suspicious fire source region dynamic parameter, when dynamic parameter meet the first preset condition when, obtain target area
Fire behavior information.
Further, system further includes, it is seen that light video camera, the visible images for photographic subjects region；Holder is used
In installation thermal imaging system, rangefinder, meteorological sensor and visible light camera；Processor, for according to the visible of target area
The location information of fire behavior is calculated at a distance from target area in light image, the operation information of holder and monitoring position, and
Coordinate position is identified on visible images.
In embodiments of the present invention, it reads in the thermal image of the target area that current time monitors and collected
Monitoring data, wherein monitoring data include at least: monitoring position is at a distance from target area and weather information；According to thermal map
Suspicious fire source threshold value is calculated in the sum of the grayscale values monitoring data of picture；When there are any one or more pixels in thermal image
When gray value is greater than fire source threshold value, determine that there are suspicious fire source regions in target area；When determining that there are suspicious in target area
When fire source region, the thermal image of the target area monitored after current time is read；The mesh that extraction current time monitors
The thermal image in region is marked, or the suspicious fire source region in the thermal image of target area monitored after current time is dynamic
State parameter, and judge whether dynamic parameter meets the first preset condition；When dynamic parameter meets the first preset condition, mesh is determined
It marks in region there are the method for fire behavior, solves in the prior art during monitoring fire behavior, due to the influence of external condition,
Cause to monitor the low technical problem of fire behavior accuracy rate.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of flow chart of the monitoring method of optional fire behavior according to an embodiment of the present invention；
Fig. 2 is the flow chart of the monitoring method of another optional fire behavior according to an embodiment of the present invention；And
Fig. 3 is the schematic diagram of the monitoring server of another optional fire behavior according to an embodiment of the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
Embodiment one
According to embodiments of the present invention, a kind of embodiment of the method for the monitoring method of fire behavior is provided, it should be noted that
The step of process of attached drawing illustrates can execute in a computer system such as a set of computer executable instructions, also,
It, in some cases, can be to be different from shown in sequence execution herein although logical order is shown in flow charts
The step of out or describing.
Fig. 1 is a kind of flow chart of the monitoring method of optional fire behavior according to an embodiment of the present invention, as shown in Figure 1, should
Method includes the following steps:
Step S12 reads the thermal image in the target area that current time monitors and collected monitoring data,
Wherein, monitoring data include at least: monitoring position is at a distance from target area and weather information.
In above-mentioned steps S12, monitoring device may include thermal imaging system, rangefinder and meteorological sensor, and thermal imaging system can
With the thermal image of real-time monitoring target area, thermal imaging system can carry out comprehensive or fixed point scanning to ground, to be supervised
Control the thermal image of the arbitrary region in range.Rangefinder can monitor the distance between position and target area, gas with real-time measurement
Image sensor can be current with real-time detection weather information, wherein weather information may include current environment temperature, environmental wet
The information such as degree and visibility.
It should be noted that above-mentioned monitoring position can be the position where monitoring device, in a kind of optional applied field
Under scape, scattering device has multiple monitoring steel towers in forest zone, and the top of multiple monitoring steel towers is provided with holder, and monitoring device is mounted on
On holder, holder can rotate, so that the thermal image and monitoring data in multiple monitoring devices acquisition forest zone.Wherein, monitoring is set
Standby thermal imaging system, rangefinder and the meteorological sensor for including.Thus, in above-mentioned application scenarios, monitoring position can be holder
Position.It for multiple monitoring devices, may be mounted on the holder of different location, multiple prisons on different holders
Control equipment can carry out information exchange by network between monitoring center.
Suspicious fire source threshold value is calculated according to the sum of the grayscale values monitoring data of thermal image in step S14.
In above-mentioned steps S14, thermal image can be thermal imaging system by non-contact detection infrared energy, and by infrared energy
Electric signal is converted to, and then forms thermal image, wherein temperature value can be calculated by above-mentioned thermal image.In thermal image
In, intuitively the height of temperature can be indicated with different colors, for example, can indicate temperature height with red, marked with blue
It is low to know temperature.Atmospheric transmittance can be calculated by distance, environment temperature, ambient humidity and the visibility information monitored, then
Above-mentioned suspicious fire source threshold value is calculated by the gray value of atmospheric transmittance and thermal image.
It should be noted that by joined rangefinder and meteorological sensor in Fire Monitor System, it can be real-time
Ground monitors distance and weather information, can calculate atmospheric transmittance in real time, by the value of real-time update atmospheric transmittance come
Reach the suspicious fire source threshold value of real-time update, the accuracy rate of the differentiation of fire behavior can be effectively improved.
Step S18, when being greater than suspicious fire source threshold value there are the gray value of any one or more pixels in thermal image,
Determine that there are suspicious fire source regions in target area.
Specifically, by comparing the size relation of the gray value of pixel and suspicious fire source threshold value, when gray value is greater than can
When doubting fire source threshold value, determine that there are suspicious fire source regions in target area, when gray value is less than or equal to suspicious fire source threshold value, really
Setting the goal in region, there is no suspicious fire source regions, it is possible to further determine in target area without fire behavior.
It should be noted that suspicious fire source region can be set of the gray value greater than the pixel of suspicious fire source threshold value.
It should also be noted that, judging to lead in thermal image with the presence or absence of the method in the region greater than suspicious fire source threshold value
Cross such as under type: first way: the size by comparing the gray value of each pixel and suspicious fire source threshold value in thermal image,
When there are when the pixel that gray value is greater than suspicious fire source threshold value, determine to judge to exist in thermal image to be greater than suspicious fire in thermal image
The region of source threshold value.The second way: being divided into multiple sub- thermal images for thermal image, successively calculates the gray scale of every sub- thermal image
Value determines in thermal image and exists greater than suspicious fire source when the gray value of any one sub- thermal image is greater than suspicious fire source threshold value
The region of threshold value.The third mode: any one region in selection thermal image compares the gray value of each pixel in the region
With the size of suspicious fire source threshold value, when in the region there are gray value be greater than suspicious fire source threshold value pixel when, determine thermal map
There is the region greater than suspicious fire source threshold value as in.
Step S20 is read and is monitored after current time when determining in target area there are when suspicious fire source region
The thermal image of target area.
In above-mentioned steps S20, when there is suspicious fire source region in the target area, thermal imaging system acquisition target area is being worked as
Continuous multiframe thermal image after the preceding moment.
Under a kind of optionally application scenarios, thermal imaging system is installed on holder, drives thermal imagery by control cloud platform rotation
The direction of the camera lens of instrument, so that the region monitored within its monitoring range that thermal imaging system is comprehensive.When thermal imaging system is in first frame
There are when suspicious fire source region in thermal image, control holder stops operating, and makes the company of thermal imaging system continuous acquisition after the first frame
Continuous multiframe thermal image.
Step S22, extracts the thermal image for the target area that current time monitors, or monitors after current time
Target area thermal image in suspicious fire source region dynamic parameter, and judge whether dynamic parameter meets the first default item
Part.
In above-mentioned steps S22, in continuous multiframe thermal image, the dynamic of the suspicious fire source region in every frame image is extracted
State parameter analyzes the characteristics of whether situation of change of dynamic parameter meets forest fires.Wherein, dynamic parameter may include: suspicious fire
The boundary of source region, the gradient of the gray-value variation in suspicious fire source region, the fluctuation direction in suspicious fire source region and suspicious fire
The vibration frequency of source region.
It should be noted that judging that dynamic parameter the first preset condition of satisfaction can when dynamic parameter includes multiple parameters
To be at least two parameters in multiple parameters while meet the corresponding preset condition of parameters.
Step S24 obtains the fire behavior information of target area when dynamic parameter meets the first preset condition.
In above-mentioned steps S24, dynamic parameter the first preset condition of satisfaction, which can be, open fire in target area, or
Person be in target area there are early fires, for example, temporarily naked eyes and the hidden fire that can not find of visible light camera.
S12 to step S24 through the above steps in the present embodiment reads the heat in the target area that current time monitors
Image and collected monitoring data, wherein monitoring data include at least: monitoring position at a distance from target area and
Weather information；Suspicious fire source threshold value is calculated according to the sum of the grayscale values monitoring data of thermal image；When the presence in thermal image is appointed
When the gray value of one or more of anticipating pixels is greater than fire source threshold value, determine that there are suspicious fire source regions in target area；When true
It sets the goal in region there are when suspicious fire source region, reads the thermal image of the target area monitored after current time；It mentions
The thermal image for the target area for taking current time to monitor, or the thermal image of target area monitored after current time
In suspicious fire source region dynamic parameter, and judge whether dynamic parameter meets the first preset condition；When dynamic parameter meets
When the first preset condition, the fire behavior information of target area is obtained, is solved in the prior art during monitoring fire behavior, due to
The influence of external condition causes to monitor the low technical problem of fire behavior accuracy rate.
Optionally, step S14, the step of suspicious fire source threshold value is calculated according to the sum of the grayscale values monitoring data of thermal image
May include:
Step S141 calculates the background gray levels of thermal image according to the gray value of pixel each in thermal image.
Specifically, the step of calculating the background gray levels of thermal image according to the gray value of pixel each in thermal image can be with
It include: the gray value for obtaining each pixel in thermal image；The quantity of the pixel in thermal image with same grayscale value is counted,
Obtain multiple groups pixel collection；Using the gray value of one group of most pixel collection of pixel quantity as the background of thermal image ash
Angle value.
Step S143, according to monitoring position at a distance from target area and weather information calculate current time atmosphere it is saturating
Cross rate.
Specifically, according to information such as current distance, environment temperature, ambient humidity and visibility, current time is calculated
Atmospheric transmittance, further according to priori knowledge, i.e. the gray value that is imaged in thermal image of target image, calculate under current distance can
Doubt fire source threshold value.
Step S145 carries out quadrature calculating to atmospheric transmittance and default gray threshold, the calculated result that quadrature is calculated
Summation operation, which is carried out, with background gray levels obtains suspicious fire source threshold value.
Specifically, since the infra-red radiation of distant objects is affected by atmospheric transmittance, and atmospheric transmittance is influenced
Principal element is distance, environment temperature, ambient humidity and visibility.Hot spoke of the same object under varying environment, different distance
It is different for penetrating.S141 to step S145 through the above steps, by the way that rangefinder and meteorological sensor is added, by calculating in real time
Atmospheric transmittance updates suspicious fire source threshold value, can effectively improve the accuracy rate of fire behavior judgement.
It should be noted that default gray threshold can be the gray value of the flame under short distance, wherein closely can be with
It is 100 meters.
Specifically, suspicious fire source threshold value T can be calculated by following formula:
T=G+F × τ；Wherein, G is the background gray levels of thermal image, and F is default gray threshold, and τ is atmospheric transmittance.
Optionally, step S143, according to monitoring position at a distance from target area and weather information calculate current time
Atmospheric transmittance the step of may include:
Step S1431 calculates the attenuation coefficient at current time according to weather information, and weather information includes at least: environment temperature
Degree, ambient humidity and visibility.
Step S1433, it is by attenuation coefficient and apart from progress quadrature operation, the result of quadrature operation is saturating as atmosphere is calculated
Cross the values of powers of the power function of rate.
Atmospheric transmittance is calculated by power function in step S1435.
Specifically, it by weather information and apart from the method for calculating atmospheric transmittance, can be counted according to following formula
Calculate atmospheric transmittance τ:
τ=exp (- σ × x), wherein σ is attenuation coefficient, and x is monitoring position at a distance from target area.
Optionally, the dynamic parameter in suspicious fire source region includes at least following any one or more parameters: suspicious fire source
The boundary in region, the gray-value variation in suspicious fire source region, the fluctuation direction in suspicious fire source region and suspicious fire source region
Vibration frequency, in the case where the dynamic parameter in suspicious fire source region includes multiple parameters, step S22 judges that dynamic parameter is
The step of the first preset condition of no satisfaction includes:
Step S220, when any one or two dynamic parameters meet the following contents, determines that dynamic is joined in thermal image
Number meets the first preset condition: the boundary in the suspicious fire source region in thermal image is irregular image；Suspicious fire in thermal image
The gray-value variation of source region is successively to successively decrease from bottom to up；The fluctuation direction in the suspicious fire source region in thermal image is same side
To；And the vibration frequency in the suspicious fire source region in thermal image reaches predeterminated frequency range.
Optionally, the dynamic parameter in suspicious fire source region includes: the boundary in suspicious fire source region, the ash in suspicious fire source region
Angle value variation, the fluctuation direction in suspicious fire source region and the vibration frequency in suspicious fire source region, wherein step S22, judgement are dynamic
The step of whether state parameter meets the first preset condition may include:
Step S221, when any one or more dynamic parameters meet the following contents, determines that dynamic is joined in thermal image
Number meets the first preset condition: the boundary in the suspicious fire source region in thermal image is irregular image；Step S221b, thermal image
In suspicious fire source region gray-value variation be successively successively decrease from bottom to up；Step S221c, the suspicious zone of origin in thermal image
The fluctuation direction in domain is same direction；And step S221d, the vibration frequency in the suspicious fire source region in thermal image reach default
Frequency range.
Specifically, since there are irregularity boundaries for forest fires, grey scale change is successively passed from bottom to up in thermal image after imaging
Subtracting, fluctuating direction is the features such as same direction and vibration frequency are in fixed range, therefore, can be by extracting multiframe thermal map
The dynamic parameter in the suspicious fire source region as in, to judge in target area with the presence or absence of fire behavior.Wherein, when suspicious fire source region
Dynamic parameter the characteristics of meeting forest fires when, determine in target area there are fire behavior, when suspicious fire source region dynamic parameter not
When the characteristics of meeting forest fires, determine that there is no fire behaviors in target area.Above-mentioned predeterminated frequency range can be preset, example
Such as, 8-12 hertz.
It should be noted that it is above-mentioned when there is suspicious fire source region in the target area, further target area is carried out
The thermal images of continuous multiple frames carries out the extraction and differentiation of feature, it is possible to reduce exist in target area movement high temp objects or
When reflective spot, the problem of causing fire behavior to report by mistake, improves the accuracy of the fire behavior judgement of Fire Monitor System.
Optionally, before step S20, the multiframe thermal image for reading the target area monitored after current time,
This method may include:
Step S19, control thermal imaging system continuously acquire the multiframe thermal image in target area.
Specifically, thermal imaging system may be mounted on holder, determine that target area there are when suspicious fire source region, can control
Holder stop motion processed, so that thermal imaging system stop motion, the continuous multiframe thermal image in monitoring objective region.
Optionally, determine that there are fire behaviors in target area when dynamic parameter meets the first preset condition in step S24
Later, this method can also include: step S253, according to the operation information of holder and monitoring position and target area away from
From the location information of fire behavior is calculated according to default computation model.
Wherein, thermal imaging system and visible light camera are installed on holder, and the operation information of holder includes at least: holder
Longitudinal axis angle, the horizontal axis angle of the current field of holder, the longitude and latitude of holder and the height of holder of current field.
Specifically, determining that target area, can be according to the longitudinal and transverse shaft angle of the current field of holder there are after fire behavior
Degree leads in three-dimensional geographic information system in conjunction with the longitude and latitude and height where the fixation position of the monitoring device of forest zone setting
It crosses three-dimensional scientific algorithm and obtains the specified place of the fire behavior.
It should be noted that being used to acquire the thermal imaging system of target area thermography and for acquiring target area visible light figure
The visible light camera of picture can be placed in shield using double-window structure, be mounted on the holder at monitoring tower top end.Holder
Rotation and stopping, can driving thermal imaging system and visible light camera to be directed toward different directions and be monitored.
Optionally, in step S253, before the location information of fire behavior is calculated according to default computation model, this method is also
May include:
Step S2520 reads the visible images that visible light camera takes.
Step S2521, it will be seen that light image and thermal image carry out compression processing, obtain image data.
Step S2523, by image data, operation information together with holder and monitoring position at a distance from target area,
It is sent to warning device, so that warning device determines the location information of fire behavior, and identifies coordinate position on visible images.
Specifically, in above-mentioned steps S2520 into step S2523, the CPU that can use embedded processing equipment is first used
H.264 or MPEG4 video compression algorithm, thermal imaging system and visible light camera acquired image are compressed, figure is obtained
As data.Weather information, fire behavior warning message, geographical location information, image information are packaged TCP/I P packet, then by having
Line or wireless network are sent to warning device.
It should be noted that the image data that above-mentioned compression can be obtained, by weather information, fire behavior warning message,
Location information, image information packing TCP/I P packet are managed, monitoring center is sent to by wired or wireless network system, then by supervising
The computer at control center combines its GIS-Geographic Information System, and unified interface shows video, meteorology and warning message, realizes the unified platform
Monitoring system.
Optionally, in step S253, after the location information of fire behavior is calculated according to default computation model, this method is also
May include:
Step S254, warning device issue alarm signal.
Specifically, after the place where fire behavior is identified in visible images, pass through and issue alarm signal, remind prison
The staff of control fire behavior makes corresponding processing, to reduce loss caused by forest fire.Wherein, alarm signal can be logical
It crosses sound and issues alarm, can also be issued and be alarmed by the flashing of light, or by wireless communication networks by the place of fire behavior
Information etc. is sent on the handheld terminal of staff.
In a kind of optional application scenarios, Fig. 2 is a kind of monitoring side of optional fire behavior according to an embodiment of the present invention
The monitoring method of the flow chart of method, above-mentioned fire behavior can specifically include following steps:
Step a1, the monitoring position at stadia surveying current time is at a distance from target area.
Step a2, meteorological sensor acquire the weather information at current time.
Step a3, thermal imaging system monitor the thermal image in the target area at current time.
In above-mentioned steps a1 into step a3, monitoring device may include rangefinder, meteorological sensor and thermal imaging system, three
It works at the same time, while acquiring the monitoring position at current time at a distance from target area, in weather information and target area
Thermal image.Monitoring device is mounted on the holder at monitoring tower top end, by cloud platform rotation, thermal imaging system is driven to be directed toward different directions
It is monitored, comprehensive/fixed point scanning is carried out to forest zone and obtains thermal image.
The suspicious fire source threshold at current time is calculated by the gray value of distance, weather information and thermal image by step b
Value.
In above-mentioned steps b, according to the distance at current time, environment temperature, ambient humidity and visibility, it is saturating to calculate atmosphere
Rate τ is crossed, further according to priori knowledge, i.e. the background gray levels G of thermal image, calculates the suspicious fire source threshold value at current time.F is low coverage
Gray value from lower flame can determine suspicious fire source threshold value T=G+F × τ according to following formula.
Step c judges in target area with the presence or absence of the region greater than suspicious fire source threshold value.It is big when existing in target area
When suspicious fire source threshold value, step d is executed, when existing in target area less than or equal to suspicious fire source threshold value, executes step m.
In above-mentioned steps c, if there is the region greater than suspicious fire source threshold value T in present image, target area is determined
Domain includes suspicious fire source region.
Step d identifies suspicious fire source region, reads the continuous multiframe thermal map of the target area after current time
Picture.
In above-mentioned steps d, suspicious fire source region is identified, control holder stops operating, and reads thermal imaging system at current time
The continuous multiframe thermal image monitored later.
Step e extracts the dynamic parameter in suspicious fire source region.
In above-mentioned steps e, the boundary in suspicious fire source region in thermal imaging, gradient, fluctuation direction, vibration frequency are extracted.
Wherein, the gradient in suspicious fire source region can be the gray-value variation in suspicious fire source region in above-described embodiment.
Step f, judges whether dynamic parameter meets preset condition.When dynamic parameter meets preset condition, step is executed
G executes step m when dynamic parameter does not meet preset condition.
In above-mentioned steps f, boundary, gradient, the fluctuation direction in suspicious fire source region, the situation of change of vibration frequency are analyzed
The characteristics of whether meeting forest fires.Since forest fires have fire source region irregularity boundary, fluctuation direction is usually same direction, frequency
Between specific frequency, the features such as gray value of the forest fires in thermal image once successively decreases from bottom to up are therefore, suspicious by judging
The dynamic parameter in fire source region can reduce the accuracy rate in actual monitoring fire behavior.
Step g determines that there are fire behaviors in target area.
Step h, it is seen that the visible images in light video camera photographic subjects region.
In above-mentioned steps h, monitoring device can also include visible light camera, it is seen that light video camera and thermal imaging system use
Double-window structure is placed in shield, is mounted on the holder at monitoring tower top end, and the visible images in real-time monitoring forest zone.
Step i, it will be seen that the image data that light video camera and thermal imaging system monitor is compressed, by weather information, fire
The packings such as feelings warning message, geographical location information transmission.
In above-mentioned steps i, the CPU of embedded processing equipment is first used H.264 or MPEG4 video compression algorithm is to visible light
Video camera is compressed with thermal imaging system acquired image, by weather information, fire behavior warning message, geographical location information, image
Information package TCP/IP packet；Then monitoring center is sent to by wired or wireless network system；Again by the calculating of monitoring center
Machine combines its GIS-Geographic Information System, and unified interface shows video, meteorology and warning message, realizes unified platform monitoring system.
Step j calculates the location information of fire behavior in three-dimensional geographic information system.
In above-mentioned steps j, the longitudinal and transverse shaft angle degree of the current field of the holder first sent back to according to monitoring point, in conjunction with forest zone
Longitude and latitude and height where the fixed position in monitoring point obtain fire by three-dimensional scientific algorithm in three-dimensional geographic information system
The specified place in source finally identifies fire source site in visible images.
Step k issues alarm signal.
In above-mentioned steps k, alarm can make a sound alarm, and the staff of monitoring center is reminded to make accordingly
Processing.
Step m determines that there is no fire sources in target area.
In above-mentioned steps m, while fire source is not present in target area, including thermal imaging system, visible light camera, ranging
The monitoring device of instrument and meteorological sensor can uninterruptedly monitor realtime graphic, distance and the Weather information in forest zone, real-time monitoring
Fire behavior.
It should be noted that during executing above-mentioned steps a1 to step m, it is seen that light video camera and thermal imaging system are also
The visible images monitored and thermal image can be sent to monitoring center, it will be seen that light image and thermal image are shown in display
On device, make monitoring center staff monitor in real time forest zone the case where.
Above-mentioned steps a1 to step m mainly includes mentioning for suspicious fire source region judging target area with the presence or absence of fire behavior
Take two processes of differentiation with fire behavior.By the fire monitoring method of the above-mentioned realization based on Fire Monitor System, tradition is made up
Monitoring system rate of failing to report and the higher deficiency of rate of false alarm, realize the accurate, real-time, fast monitoring of forest fire.
Embodiment two
According to embodiments of the present invention, a kind of embodiment of the monitoring server of fire behavior is additionally provided, Fig. 3 is according to the present invention
The schematic diagram of the monitoring server of a kind of optional fire behavior of embodiment, as shown in figure 3, the server includes:
First reading unit 40 for reading the thermal image in the target area that current time monitors, and is being worked as
Preceding moment collected monitoring data, wherein monitoring data include at least: monitoring position is at a distance from target area and meteorology
Information.
Specifically, monitoring device includes thermal imaging system, rangefinder and meteorological sensor, and target can be monitored in real time in thermal imaging system
The thermal image in region, thermal imaging system can carry out comprehensive or fixed point scanning to ground, any in monitoring range to obtain
The thermal image in region.Rangefinder can monitor the distance between position and target area with real-time measurement, and meteorological sensor can be real
When detect current weather information, wherein weather information may include current environment temperature, ambient humidity and visibility etc.
Information.
It should be noted that above-mentioned monitoring position can be the position where monitoring device, in a kind of optional applied field
Under scape, scattering device has multiple monitoring steel towers in forest zone, and the top of multiple monitoring steel towers is provided with holder, and monitoring device is mounted on
On holder, holder can rotate, so that the thermal image and monitoring data in multiple monitoring devices acquisition forest zone.Wherein, monitoring is set
Standby thermal imaging system, rangefinder and the meteorological sensor for including.Thus, in above-mentioned application scenarios, monitoring position can be holder
Position.It for multiple monitoring devices, may be mounted on the holder of different location, multiple prisons on different holders
Control equipment can carry out information exchange by network between monitoring center.
Suspicious fire source threshold value is calculated for the sum of the grayscale values monitoring data according to thermal image in first computing unit 42.
Specifically, thermal image can be thermal imaging system by non-contact detection infrared energy, and infrared energy is converted to electricity
Signal, and then form thermal image, wherein temperature value can be calculated by above-mentioned thermal image.In thermal image, Ke Yiyong
Different colors intuitively indicates the height of temperature, for example, temperature height can be indicated with red, it is low with blue scaling temp.
Atmospheric transmittance can be calculated by distance, environment temperature, ambient humidity and the visibility information monitored, then saturating by atmosphere
The gray value for crossing rate and thermal image calculates above-mentioned suspicious fire source threshold value.
It should be noted that by joined rangefinder and meteorological sensor in Fire Monitor System, it can be real-time
Ground monitors distance and weather information, can calculate atmospheric transmittance in real time, by the value of real-time update atmospheric transmittance come
Reach the suspicious fire source threshold value of real-time update, the accuracy rate of the differentiation of fire behavior can be effectively improved.
First determination unit 46, for when there are the gray values of any one or more pixels greater than suspicious in thermal image
When fire source threshold value, determine that there are suspicious fire source regions in target area.
Specifically, by comparing the size relation of the gray value of pixel and suspicious fire source threshold value, when gray value is greater than can
When doubting fire source threshold value, determine that there are suspicious fire source regions in target area, when gray value is less than or equal to suspicious fire source threshold value, really
Setting the goal in region, there is no suspicious fire source regions, it is possible to further determine in target area without fire behavior.
It should be noted that suspicious fire source region can be set of the gray value greater than the pixel of suspicious fire source threshold value.
Second reading unit 48, for reading at current time when determining in target area there are when suspicious fire source region
The thermal image of the target area monitored later.
Specifically, when there is suspicious fire source region in the target area, thermal imaging system acquire target area current time it
Continuous multiframe thermal image afterwards.
Under a kind of optionally application scenarios, thermal imaging system is installed on holder, drives thermal imagery by control cloud platform rotation
The direction of the camera lens of instrument, so that the region monitored within its monitoring range that thermal imaging system is comprehensive.When thermal imaging system is in first frame
There are when suspicious fire source region in thermal image, control holder stops operating, and makes the company of thermal imaging system continuous acquisition after the first frame
Continuous multiframe thermal image.
Judging unit 50, for extracting the thermal image for the target area that current time monitors, or current time it
The dynamic parameter in the suspicious fire source region in the thermal image of the target area monitored afterwards, and judge whether dynamic parameter meets
One preset condition.
Specifically, in continuous multiframe thermal image, the dynamic parameter in the suspicious fire source region in every frame image is extracted, point
The characteristics of whether situation of change of analysis dynamic parameter meets forest fires.Wherein, dynamic parameter may include: the side in suspicious fire source region
Boundary, the gradient of the gray-value variation in suspicious fire source region, the fluctuation direction in suspicious fire source region and the wave in suspicious fire source region
Dynamic frequency.
It should be noted that judging that dynamic parameter the first preset condition of satisfaction can when dynamic parameter includes multiple parameters
Meet the corresponding preset condition of parameters simultaneously at least two parameters in multiple parameters.
Second determination unit 52, for when dynamic parameter meets the first preset condition, obtaining the fire behavior letter of target area
Breath.
Specifically, the first preset condition of dynamic parameter satisfaction, which can be in target area, open fire or target
In region there are early fires, for example, temporarily naked eyes and the hidden fire that can not find of visible light camera.
The monitoring server of fire behavior includes: the first reading unit 40 in the embodiment of the present application, for reading at current time
The thermal image in target area monitored and collected monitoring data, wherein monitoring data include at least: monitoring position
It sets at a distance from target area and weather information；First computing unit 42, for monitoring number according to the sum of the grayscale values of thermal image
According to suspicious fire source threshold value is calculated；First determination unit 46, for when there are any one or more pixels in thermal image
Gray value be greater than fire source threshold value when, determine that there are suspicious fire source regions in target area；Second reading unit 48, for when true
It sets the goal in region there are when suspicious fire source region, reads the thermal image of the target area monitored after current time；Sentence
Disconnected unit 50, for extracting the thermal image for the target area that current time monitors, or monitored after current time
The dynamic parameter in the suspicious fire source region in the thermal image of target area, and judge whether dynamic parameter meets the first default item
Part；Second determination unit 52, for obtaining the fire behavior information of target area when dynamic parameter meets the first preset condition.Solution
It has determined in the prior art during monitoring fire behavior, due to the influence of external condition, has caused to monitor the low skill of fire behavior accuracy rate
Art problem.
Optionally, the first computing unit 42 may include:
First computing module, for calculating the background gray scale of thermal image according to the gray value of pixel each in thermal image
Value.
Specifically, the first computing module includes: the first acquisition submodule, for obtaining the ash of each pixel in thermal image
Angle value；First statistic submodule, the frequency of occurrence of each gray value in the gray value for counting each pixel；First determines
Submodule, for using the most gray value of frequency of occurrence as the background gray levels of thermal image.
Second computing module, for according to monitoring position at a distance from target area and weather information calculate current time
Atmospheric transmittance.
Third computing module calculates quadrature for carrying out quadrature calculating to atmospheric transmittance and default gray threshold
Calculated result and background gray levels carry out summation operation and obtain suspicious fire source threshold value.
Specifically, according to information such as current distance, environment temperature, ambient humidity and visibility, current time is calculated
Atmospheric transmittance, further according to priori knowledge, i.e. the gray value that is imaged in thermal image of target image, calculate under current distance can
Doubt fire source threshold value.
It should be noted that the infra-red radiation due to distant objects is affected by atmospheric transmittance, and it is saturating to influence atmosphere
The principal element for crossing rate is distance, environment temperature, ambient humidity and visibility.Same object is under varying environment, different distance
Heat radiation be different.The function of being realized by above-mentioned first computing module, the second computing module and third computing module is led to
Addition rangefinder and meteorological sensor are crossed, by calculating atmospheric transmittance in real time, updates suspicious fire source threshold value, it can be effectively
Improve the accuracy rate of fire behavior judgement.
It should be noted that default gray threshold can be the gray value of the flame under short distance, wherein closely can be with
It is 100 meters.
Specifically, suspicious fire source threshold value T can be calculated by following formula:
T=G+F × τ；Wherein, G is the background gray levels of thermal image, and F is default gray threshold, and τ is atmospheric transmittance.
Optionally, the second computing module may include:
First sub- computing module, for calculating the attenuation coefficient at current time according to weather information, weather information is at least wrapped
It includes: environment temperature, ambient humidity and visibility.
Second sub- computing module, for by attenuation coefficient with apart from carry out quadrature operation, using the result of quadrature operation as
Calculate the values of powers of the power function of atmospheric transmittance.
The sub- computing module of third, for atmospheric transmittance to be calculated by power function.
Specifically, it by weather information and apart from the method for calculating atmospheric transmittance, can be counted according to following formula
Calculate atmospheric transmittance τ:
τ=exp (- σ × x), wherein σ is attenuation coefficient, and x is monitoring position at a distance from target area.
Optionally, the dynamic parameter in suspicious fire source region includes at least following any one or more parameters: suspicious fire source
The boundary in region, the gray-value variation in suspicious fire source region, the fluctuation direction in suspicious fire source region and suspicious fire source region
Vibration frequency, in the case where the dynamic parameter in suspicious fire source region includes multiple parameters, judging unit 50 includes:
First judgment module, in thermal image, when any one or two dynamic parameters meet the following contents, really
Determine dynamic parameter and meet the first preset condition: the boundary in the suspicious fire source region in thermal image is irregular image；In thermal image
Suspicious fire source region gray-value variation be successively successively decrease from bottom to up；The fluctuation direction in the suspicious fire source region in thermal image
For same direction；And the vibration frequency in the suspicious fire source region in thermal image reaches predeterminated frequency range.
Optionally, the dynamic parameter in suspicious fire source region includes: the boundary in suspicious fire source region, the ash in suspicious fire source region
Angle value variation, the fluctuation direction in suspicious fire source region and the vibration frequency in suspicious fire source region, wherein judging unit 50 can be with
Include:
Second judgment module is used in thermal image, when any one or more dynamic parameters meet the following contents, really
Determine dynamic parameter and meet the first preset condition: the boundary in the suspicious fire source region in every frame thermal image is irregular image；Multiframe
The gray-value variation in the suspicious fire source region in thermal image is successively to successively decrease from bottom to up；Suspicious zone of origin in multiframe thermal image
The fluctuation direction in domain is same direction；The vibration frequency in the suspicious fire source region in multiframe thermal image reaches predeterminated frequency range.
Specifically, since there are irregularity boundaries for forest fires, grey scale change is successively passed from bottom to up in thermal image after imaging
Subtracting, fluctuating direction is the features such as same direction and vibration frequency are in fixed range, therefore, can be by extracting multiframe thermal map
The dynamic parameter in the suspicious fire source region as in, to judge in target area with the presence or absence of fire behavior.Wherein, when suspicious fire source region
Dynamic parameter the characteristics of meeting forest fires when, determine in target area there are fire behavior, when suspicious fire source region dynamic parameter not
When the characteristics of meeting forest fires, determine that there is no fire behaviors in target area.Above-mentioned predeterminated frequency range can be preset, example
Such as, 8-12 hertz.
It should be noted that it is above-mentioned when there is suspicious fire source region in the target area, further target area is carried out
The thermal images of continuous multiple frames carries out the extraction and differentiation of feature, it is possible to reduce exist in target area movement high temp objects or
When reflective spot, the problem of causing fire behavior to report by mistake, improves the accuracy of the fire behavior judgement of Fire Monitor System.
Optionally, which can also include:
Control unit continuously acquires multiframe thermal image in target area for controlling thermal imaging system.
Specifically, thermal imaging system can be installed on holder, be stopped operating by control holder to control thermal imaging system and continuously acquire
The thermal image of target area.
Optionally, which can also include: third computing unit, for according to holder operation information and monitoring
The location information of fire behavior is calculated according to default computation model at a distance from target area for position.
Wherein, thermal imaging system and visible light camera are installed on holder, and the operation information of holder includes at least: holder
Longitudinal axis angle, the horizontal axis angle of the current field of holder, the longitude and latitude of holder and the height of holder of current field.
Specifically, when Fire Monitor System includes visible light camera, determining that target area, can there are after fire behavior
Longitude and latitude with according to the longitudinal and transverse shaft angle degree of the current field of holder, where the fixation position for the monitoring device being arranged in conjunction with forest zone
Degree and height, in three-dimensional geographic information system, obtain the specified place of the fire behavior by three-dimensional scientific algorithm, finally visible
The coordinate position where fire behavior is identified in light image.
It should be noted that for acquiring the thermal imaging system of target area thermography, and for acquiring target area visible light
The visible light camera of image can be placed in shield using double-window structure, be mounted on the holder at monitoring tower top end.Holder
Rotation and stopping, thermal infrared imager and visible light camera can be driven to be directed toward different directions and be monitored.
Optionally, which can also include:
Third reading unit, the visible images taken for reading visible light camera.
Data processing unit, for it will be seen that light image and thermal image progress compression processing, obtain image data.
Data transmission unit, for the operation information and monitoring position and target area by image data, together with holder
Distance, be sent to warning device, so that warning device determines the location information of fire behavior, and identify seat on visible images
Cursor position.
Specifically, in data processing unit and data transmission unit, the CPU that can use embedded processing equipment is first used
H.264 or MPEG4 video compression algorithm, thermal imaging system and visible light camera acquired image are compressed, figure is obtained
As data.Weather information, fire behavior warning message, geographical location information, image information are packaged TCP/I P packet, then by having
Line or wireless network are sent to warning device.
It should be noted that the image data that above-mentioned compression can be obtained, by weather information, fire behavior warning message,
Location information, image information packing TCP/I P packet are managed, monitoring center is sent to by wired or wireless network system, then by supervising
The computer at control center combines its GIS-Geographic Information System, and unified interface shows video, meteorology and warning message, realizes the unified platform
Monitoring system.
Optionally, which can also include: warning device, for issuing alarm signal.
Embodiment three
According to embodiments of the present invention, a kind of embodiment of the monitoring system of fire behavior is additionally provided.The system includes:
Thermal imaging system, for the thermal image in monitoring objective region；
Rangefinder, for measuring monitoring position at a distance from target area；
Meteorological sensor, for acquiring current weather information；
Monitoring server is surveyed for thermal image, the rangefinder according to thermal imaging system in the target area that current time monitors
The detection position measured is at a distance from target area and suspicious fire source is calculated in the collected weather information of meteorological sensor
Threshold value determines target area when being greater than suspicious fire source threshold value there are the gray value of any one or more pixels in thermal image
There are suspicious fire source regions in domain, and after the thermal image for reading the target area monitored after current time, extract
In the thermal image for the target area that current time monitors, or the thermal image of target area that is monitored after current time
The dynamic parameter in suspicious fire source region obtains the fire behavior information of target area when dynamic parameter meets the first preset condition.
Specifically, above-mentioned monitoring position can be the position where monitoring device, and monitoring device may include thermal imaging system, survey
Distance meter and meteorological sensor, under a kind of optional application scenarios, scattering device has multiple monitoring steel towers, Duo Gejian in forest zone
The top of control steel tower is provided with holder, and monitoring device is mounted on holder, and holder can rotate, so that multiple monitoring devices acquire
The thermal image and monitoring data in forest zone.Wherein, thermal imaging system, rangefinder and the meteorological sensor that monitoring device includes.Thus,
In above-mentioned application scenarios, monitoring position can be the position of holder.For multiple monitoring devices, it may be mounted at and be located at difference
On the holder of position, multiple monitoring devices on different holders can carry out information friendship by network between monitoring center
Mutually.
It should be noted that working as gray value by comparing the gray value of pixel and the size relation of suspicious fire source threshold value
When greater than suspicious fire source threshold value, determine that there are suspicious fire source regions in target area, when gray value is less than or equal to suspicious fire source threshold
When value, determine that there is no suspicious fire source regions in target area, it is possible to further determine in target area without fire behavior.Wherein,
Suspicious fire source region can be set of the gray value greater than the pixel of suspicious fire source threshold value.
The present embodiment is by thermal imaging system, for the thermal image in monitoring objective region；Rangefinder, for measuring monitoring position
At a distance from target area；Meteorological sensor, for acquiring current weather information；Monitoring server, for according to thermal imaging system
The detection position that thermal image, stadia surveying in the target area that current time monitors arrive at a distance from target area and
Suspicious fire source threshold value is calculated in the collected weather information of meteorological sensor, when there are any one or more pictures in thermal image
It when vegetarian refreshments is greater than suspicious fire source threshold value, determines that there are suspicious fire source regions in target area, and is reading after current time
After the thermal image of the target area monitored, the thermal image for the target area that current time monitors is extracted, or current
The dynamic parameter in suspicious fire source region in the thermal image of the target area monitored after moment, when dynamic parameter meets first in advance
If when condition, obtaining the fire behavior information of target area, solve in the prior art during monitoring fire behavior, due to extraneous item
The influence of part causes to monitor the low technical problem of fire behavior accuracy rate.
Optionally, which can also include,
Visible light camera, the visible images for photographic subjects region；
Holder, for installing thermal imaging system, rangefinder, meteorological sensor and visible light camera；
Processor, for according to the visible images of target area, the operation information of holder and monitoring position and target
The distance in region, is calculated the location information of fire behavior, and coordinate position is identified on visible images.
Specifically, determining that target area, can be according to the longitudinal and transverse shaft angle of the current field of holder there are after fire behavior
Degree leads in three-dimensional geographic information system in conjunction with the longitude and latitude and height where the fixation position of the monitoring device of forest zone setting
It crosses three-dimensional scientific algorithm and obtains the specified place of the fire behavior, the coordinate bit where fire behavior is finally identified in visible images
It sets.
It should be noted that being used to acquire the thermal imaging system of target area thermography and for acquiring target area visible light figure
The visible light camera of picture can be placed in shield using double-window structure, be mounted on the holder at monitoring tower top end.Holder
Rotation and stopping, can driving thermal imaging system and visible light camera to be directed toward different directions and be monitored.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes: that USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (14)
1. a kind of monitoring method of fire behavior, which is characterized in that the described method includes:
Read the thermal image in the target area that current time monitors and collected monitoring data, wherein the monitoring
Data include at least: monitoring position is at a distance from the target area and weather information；
Suspicious fire source threshold value is calculated according to the sum of the grayscale values atmospheric transmittance of the thermal image, wherein the atmosphere penetrates
Rate is calculated by the monitoring data；
When being greater than the suspicious fire source threshold value there are the gray value of any one or more pixels in the thermal image, determine
There are suspicious fire source regions in the target area；
When determining in the target area there are when the suspicious fire source region, reads and monitored after the current time
The thermal image of the target area；
The thermal image for the target area that the current time monitors is extracted, or the institute monitored after the current time
The dynamic parameter in the suspicious fire source region in the thermal image of target area is stated, and judges whether the dynamic parameter meets
One preset condition；
When the dynamic parameter meets first preset condition, the fire behavior information of the target area is obtained；
Wherein, the step of suspicious fire source threshold value is calculated in monitoring data described in the sum of the grayscale values of the thermal image include:
The background gray levels of the thermal image are calculated according to the gray value of pixel each in the thermal image；
Monitoring position is at a distance from the target area and the weather information calculates the big of the current time according to described
Vapor permeability；
Quadrature calculating carried out to the atmospheric transmittance and default gray threshold, the calculated result that the quadrature is calculated with it is described
Background gray levels carry out read group total, obtain the suspicious fire source threshold value.
2. the method according to claim 1, wherein according to the monitoring position at a distance from the target area
And the weather information calculates the step of atmospheric transmittance at the current time and includes:
The attenuation coefficient at the current time is calculated according to the weather information, the weather information includes at least: environment temperature,
Ambient humidity and visibility；
The attenuation coefficient and the distance are subjected to quadrature operation, using the result of the quadrature operation as the calculating atmosphere
The values of powers of the power function of transmitance；
The atmospheric transmittance is calculated by the power function.
3. the method according to claim 1, wherein the dynamic parameter in the suspicious fire source region includes at least such as
Under any one or more parameters: the boundary in the suspicious fire source region, the gray-value variation in the suspicious fire source region are described
The fluctuation direction in suspicious fire source region and the vibration frequency in the suspicious fire source region,
In the case where the dynamic parameter in the suspicious fire source region includes multiple parameters, judge whether the dynamic parameter meets
The step of first preset condition includes:
In the thermal image, when any one or more dynamic parameters meet the following contents, the dynamic ginseng is determined
Number meets first preset condition:
The boundary in the suspicious fire source region in the thermal image is irregular image；
The gray-value variation in the suspicious fire source region in the thermal image is successively to successively decrease from bottom to up；
The fluctuation direction in the suspicious fire source region in the thermal image is same direction；
The vibration frequency in the suspicious fire source region in the thermal image reaches predeterminated frequency range.
4. according to the method described in claim 3, it is characterized in that, described in being monitored after the current time in reading
Before the thermal image of target area, which comprises
Control thermal imaging system continuously acquires thermal image described in the multiframe in the target area.
5. according to the method described in claim 4, it is characterized in that, after the fire behavior information for obtaining the target area, institute
State method further include: according to the operation information of holder and the monitoring position at a distance from the target area, according to default
The location information of the fire behavior is calculated in computation model；
Wherein, the thermal imaging system and visible light camera are installed on the holder, and the operation information of the holder at least wraps
Include: the longitudinal axis angle of the current field of the holder, the horizontal axis angle of the current field of the holder, the holder longitude and latitude
With the height of the holder.
6. according to the method described in claim 5, it is characterized in that, the fire behavior is calculated according to default computation model
Before location information, the method also includes:
Read the visible images that visible light camera takes；
The visible images and the thermal image are subjected to compression processing, obtain image data；
By described image data, operation information together with the holder and the monitoring position and the target area away from
From warning device being sent to, so that the warning device determines the location information of the fire behavior, and on the visible images
Identify coordinate position.
7. a kind of monitoring server of fire behavior, which is characterized in that the server includes:
First reading unit, for reading thermal image and collected monitoring in the target area that current time monitors
Data, wherein the monitoring data include at least: monitoring position is at a distance from the target area and weather information；
Suspicious fire source threshold value is calculated for the sum of the grayscale values atmospheric transmittance according to the thermal image in first computing unit,
Wherein, the atmospheric transmittance is calculated by the monitoring data；
First determination unit, in the thermal image there are the gray value of any one or more pixels be greater than it is described can
When doubting the pixel of fire source threshold value, determine that there are suspicious fire source regions in the target area；
Second reading unit, for reading and working as described when determining in the target area there are when the suspicious fire source region
The thermal image of the target area monitored after the preceding moment；
Judging unit, for extracting the thermal image for the target area that the current time monitors, or at the current time
The dynamic parameter in the suspicious fire source region in the thermal image of the target area monitored later, and judge the dynamic
Whether parameter meets the first preset condition；
Second determination unit, for obtaining the target area when the dynamic parameter meets first preset condition
Fire behavior information；
Wherein, first computing unit includes:
First computing module, for calculating the background ash of the thermal image according to the gray value of pixel each in the thermal image
Angle value；
Second computing module, for according to the monitoring position at a distance from the target area and the weather information calculate
The atmospheric transmittance at the current time；
Third computing module, for carrying out quadrature calculating to the atmospheric transmittance and default gray threshold, by the planimeter
The calculated result of calculation and the background gray levels carry out read group total, obtain the suspicious fire source threshold value.
8. server according to claim 7, which is characterized in that second computing module includes:
First sub- computing module, for calculating the attenuation coefficient at the current time, the meteorological letter according to the weather information
Breath includes at least: environment temperature, ambient humidity and visibility；
Second sub- computing module, for the attenuation coefficient and the distance to be carried out quadrature operation, by the quadrature operation
As a result the values of powers as the power function for calculating the atmospheric transmittance；
The sub- computing module of third, for the atmospheric transmittance to be calculated by the power function.
9. server according to claim 7, which is characterized in that the dynamic parameter in the suspicious fire source region includes at least
Following any one or more parameters: the boundary in the suspicious fire source region, the gray-value variation in the suspicious fire source region, institute
Fluctuation direction and the vibration frequency in the suspicious fire source region for stating suspicious fire source region, in the dynamic of the suspicious fire source region
In the case that state parameter includes multiple parameters, the judging unit includes:
First judgment module is used in the thermal image, when any one or more dynamic parameters meet the following contents
When, determine that the dynamic parameter meets first preset condition:
The boundary in the suspicious fire source region in the thermal image is irregular image；
The gray-value variation in the suspicious fire source region in the thermal image is successively to successively decrease from bottom to up；
The fluctuation direction in the suspicious fire source region in the thermal image is same direction；
The vibration frequency in the suspicious fire source region in the thermal image reaches predeterminated frequency range.
10. server according to claim 9, which is characterized in that the server further include:
Control unit continuously acquires thermal image described in multiframe in the target area for controlling thermal imaging system.
11. server according to claim 10, which is characterized in that the server further include: third computing unit is used
In the operation information and the monitoring position according to holder at a distance from the target area, calculated according to default computation model
Obtain the location information of the fire behavior；
Wherein, the thermal imaging system and visible light camera are installed on the holder, and the operation information of the holder at least wraps
Include: the longitudinal axis angle of the current field of the holder, the horizontal axis angle of the current field of the holder, the holder longitude and latitude
With the height of the holder.
12. server according to claim 11, which is characterized in that the server further include:
Third reading unit, the visible images taken for reading visible light camera；
Data processing unit obtains image data for the visible images and the thermal image to be carried out compression processing；
Data transmission unit, for by described image data, operation information and the monitoring position together with the holder and
The distance of the target area, is sent to warning device, so that the warning device determines the location information of the fire behavior, and
Coordinate position is identified on the visible images.
13. a kind of monitoring system of fire behavior, which is characterized in that the system comprises:
Thermal imaging system, for the thermal image in monitoring objective region；
Rangefinder, for measuring monitoring position at a distance from the target area；
Meteorological sensor, for acquiring current weather information；
Monitoring server, for the thermal image, described according to the thermal imaging system in the target area that current time monitors
The detection position that stadia surveying arrives is at a distance from the target area and the collected meteorology of the meteorological sensor
Suspicious fire source threshold value is calculated in information, wherein the suspicious fire source threshold value is penetrated according to the sum of the grayscale values atmosphere of the thermal image
Rate is calculated, and the atmospheric transmittance is by the detection position at a distance from the target area and the weather information meter
It obtains, the background gray levels of the thermal image is calculated according to the gray value of pixel each in the thermal image, according to described
Position is at a distance from the target area and the weather information calculates the atmospheric transmittance at the current time for monitoring, to institute
It states atmospheric transmittance and default gray threshold carries out quadrature calculating, the calculated result that the quadrature is calculated and the background gray scale
Value carries out read group total, obtains the suspicious fire source threshold value；When there are any one or more pixels in the thermal image
It when gray value is greater than the suspicious fire source threshold value, determines that there are suspicious fire source regions in the target area, and is reading in institute
After the thermal image for stating the target area monitored after current time, the target area that the current time monitors is extracted
The thermal image in domain, or suspicious zone of origin described in the thermal image of the target area that is monitored after the current time
The dynamic parameter in domain obtains the fire behavior information of the target area when the dynamic parameter meets the first preset condition.
14. system according to claim 13, which is characterized in that the system also includes,
Visible light camera, for shooting the visible images of the target area；
Holder, for installing the thermal imaging system, the rangefinder, the meteorological sensor and the visible light camera；
Processor, for according to the visible images of the target area, the operation information of the holder and the prison
Location is set at a distance from the target area, the location information of the fire behavior is calculated, and in the visible images subscript
Know coordinate position out.
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