CN107238440B - The temperature correction method of infrared thermal imaging detection system - Google Patents
The temperature correction method of infrared thermal imaging detection system Download PDFInfo
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- CN107238440B CN107238440B CN201610205706.0A CN201610205706A CN107238440B CN 107238440 B CN107238440 B CN 107238440B CN 201610205706 A CN201610205706 A CN 201610205706A CN 107238440 B CN107238440 B CN 107238440B
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- 238000001514 detection method Methods 0.000 title claims abstract description 33
- 238000001931 thermography Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005855 radiation Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/80—Calibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0092—Temperature by averaging, e.g. by scan
Abstract
The present invention provides a kind of temperature correction method of infrared thermal imaging detection system, and this method comprises the following steps: to reference background set target temperature, and the actual temperature with reference to background being made to reach the target temperature；Obtain the thermal map with reference to background；The thermal map with reference to background is divided into multiple regions, and obtains the average temperature value in each region；For each region of the thermal map with reference to background, successively judge the average temperature value in each region relative to the actual temperature with reference to background error whether within allowed band；If the average temperature value with reference to some region of the thermal map of background exceeds allowed band, so to the average temperature value in the region, the difference between the mean temperature in the region and the actual temperature with reference to background is compensated, so that temperature is consistent with the actual temperature with reference to background after the compensation in the region.The present invention can effectively correct the temperature error of system.
Description
Technical field
The present invention relates to the field of medical instrument technology, more particularly, to a kind of temperature of infrared thermal imaging detection system
Bearing calibration.
Background technique
Currently, overall application infrared thermal imaging detection system in the medical field, it not only can be more globally for human body
Kind disease and sub-health state carry out early warning analysis, and will not generate any ray, will not damage, not pollute to human body
Environment, it is easy to be economical.
Since the Temperature Distribution of normal human has certain stability and characteristic, the temperature at each position of body is different,
Form different thermal fields.When disease occurs for human body somewhere or function changes, blood flow can accordingly change at this, cause
Body local temperature changes, and shows as temperature drift or relatively low.According to this principle, acquired by infrared thermal imaging detection system
Human infrared radiation, and digital signal is converted to, pseudo- color thermal map is formed, using dedicated analysis software, through specialist to heat
Map analysis, judges the degree at the position of body foci, the property of disease and lesion, provides reliable basis for clinical diagnosis.
However, when acquiring human infrared radiation using traditional infrared thermal imaging detection system, often by system itself
And the influence of environmental factor, obtained color thermal map temperature point data is unstable, and keep the imaging surface on computer non-homogeneous, thus
Influence the diagnosis to the human body state of an illness.
Summary of the invention
The present invention is to propose to solve the above-mentioned problems, and its purpose is to provide one kind can effectively correct system temperature
Error is spent, to improve the temperature correction method of the infrared thermal imaging detection system of chart imaging quality.
The temperature correction method of infrared thermal imaging detection system according to the present invention, may include: step S10, to reference
Background set target temperature, and the actual temperature with reference to background is made to reach the target temperature；Step S20, described in acquisition
With reference to the thermal map of background；The thermal map with reference to background is divided into multiple regions by step S30, and obtains the flat of each region
Equal temperature value；Step S40 successively judges the average temperature value in each region for each region of the thermal map with reference to background
Whether the error relative to the actual temperature with reference to background is within allowed band；If the thermal map with reference to background
The average temperature value in a region exceeds allowed band, then, to the average temperature value in the region, compensating the region in step S50
Mean temperature and the actual temperature with reference to background between difference so that temperature and the reference after the compensation in the region
The actual temperature of background is consistent.
Preferably, the temperature correction method of infrared thermal imaging detection system of the invention, can also include: step S60, sentence
It is disconnected whether to all areas of the thermal map with reference to background, complete average temperature value relative to the reality with reference to background
The error of border temperature whether the judgement within allowed band；If being negative in the judging result of the step S60,
Return to the step S40.
Preferably, in the step S30, according to the induction of each pixel in each region of the thermal map with reference to background
The average temperature value in each region is calculated in temperature.
According to the temperature correction method of infrared thermal imaging detection system of the invention as described above, can effectively correct infrared
The temperature error of thermal imaging detection system helps to enhance and divide the state of an illness to improve the chart imaging quality of testee
Analyse judgement.
Detailed description of the invention
Fig. 1 is the exemplary block diagram of the infrared thermal imaging detection system of the embodiment of the present invention.
Fig. 2 is the Background apparatus front schematic view of first embodiment of the invention.
Fig. 3 is the Background apparatus front schematic view of second embodiment of the invention.
Fig. 4 is the Background apparatus front schematic view of third embodiment of the invention.
Fig. 5 is the Background apparatus front schematic view of fourth embodiment of the invention.
Fig. 6 is the temperature correction method precedence diagram of the infrared thermal imaging detection system of the embodiment of the present invention.
Fig. 7 is the schematic diagram when thermal map of the background board of the embodiment of the present invention is divided into four regions.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.When illustrating the embodiment of the present invention, if right
The specific descriptions of related known element or function are an impediment to the gist of the invention, then by description is omitted.
Also, technical terms used in the present specification are to be not intended to limit this in order to illustrate summary of the invention
Invention.In the present specification, singular type sentence also includes complex number type in the case where not illustrating.It is used in the description
"comprising" or " comprising " be not precluded except mentioned constituent element, step, movement and/or component, there is also it
His more than one constituent element, step, movement and/or component.
Fig. 1 shows the exemplary block diagram of the infrared thermal imaging detection system 1 of the embodiment of the present invention.
As shown in Figure 1, the infrared thermal imaging detection system 1 of the embodiment of the present invention includes image collecting device 100, computer dress
Set 200, display device 300 and Background apparatus 400.
Described image acquisition device 100, for acquiring the infrared of testee (for example, human body or Background apparatus 400 etc.)
Radiation, and collected infra-red radiation is converted into electric signal.Here, described image acquisition device 100 can use it is such as red
The equipment such as outer video camera.
The computer apparatus 200 receives the electric signal of the related infra-red radiation from image collecting device 100, and to this
Electric signal is handled, to form thermal map signal.Here, the computer apparatus 200 can be using equipment such as PC.
The display device 300 receives the thermal map signal from computer apparatus 200, forms thermal map according to the thermal map signal
And it is shown to outside.Here, the display device 300 can be using equipment such as display, touch panels.
The Background apparatus 400, for providing stable ambient temperature environment for infrared thermal imaging detection system 1.
Hereinafter, being illustrated referring to Background apparatus 400 of the Fig. 2 to Fig. 5 to the embodiment of the present invention.
Fig. 2 to Fig. 5 shows the front schematic view of the Background apparatus 400 of first to fourth embodiment of the invention.
As shown in Figures 2 to 5, Background apparatus 400 includes: background board 410, is in panel-shaped；And more than two temperature
N Reference Alignment source 420 is spent, array is arranged in background board 410, for forming uniform and stable temperature environment in background board 410；Control
Device (not shown) processed, is electrically connected, with the temperature for controlling temperature reference calibration source 420 with temperature reference calibration source 420.
The material of the background board 410 is not specifically limited, and can use the materials systems such as metal, timber, hard board, plastics
Make background board 410.
The temperature reference calibration source 420 can be electric heater or can generate the cooling end of the refrigeration machine of low temperature
End can carry out any control to the temperature of each temperature reference calibration source 420 by controller (not shown), also i.e., it is possible to
Target temperature, and being heated or cooled by predetermined time are set, the temperature of temperature reference calibration source 420 is made to reach target temperature
Degree.In addition, the array configuration of the temperature reference calibration source 420 can be the matrix of n × m, wherein n >=2, m >=2, Fig. 2 are used
2 × 2 matrix arrangements, Fig. 3 use 3 × 4 matrix arrangements.The array configuration of the temperature reference calibration source 420 may be used also
Think cross arrangement as shown in Figure 4, and can be circular arrangement as shown in Figure 5.Under extreme case, in background board 410,
Two temperature reference calibration sources 420, or left and right two temperature reference calibration sources 420 of arrangement can be arranged up and down.Here, to institute
The array configuration for stating temperature reference calibration source 420 is not specifically limited, but can take the array of all kinds of shapes as needed
Layout.
As described above, background board 410 can be made by arranging temperature reference calibration source 420 in 410 array of background board
Bulk temperature is more uniform and stablizes.
In addition, in order to correct temperature error present in infrared thermal imaging detection system 1 of the present invention, the computer apparatus
200 can be divided into the thermal map of background board 410 multiple regions, and according to the temperature sensor of pixel each in each region, meter
The average temperature value for obtaining each region is calculated, and the computer apparatus 200 is directed to each region of the thermal map of background board 410,
Can successively judge its average temperature value relative to the actual temperature of background board 410 error whether within allowed band, and
And the computer apparatus 200 has exceeded the average temperature value in the region of the allowed band to average temperature value, compensates the region
Mean temperature and background board 410 actual temperature between difference so that temperature and background board 410 after the compensation in the region
Actual temperature is consistent.
Next, explanation carries out temperature school for temperature error present in infrared thermal imaging detection system 1 of the invention
Positive method.
Fig. 6 shows the temperature correction method precedence diagram of the infrared thermal imaging detection system 1 of the embodiment of the present invention, and Fig. 7 shows
Example property shows the situation when thermal map 411 of background board 410 to be divided into four regions.
Referring to Fig. 6, the temperature correction method of the infrared thermal imaging detection system of the embodiment of the present invention includes the following steps.
Firstly, to reference background set target temperature, and the actual temperature with reference to background is made to reach target in step S10
Temperature.Specifically, setting target to the temperature reference calibration source 420 for being arranged in background board 410 by controller (not shown)
Temperature (such as 25 degree, but not limited thereto), and being heated or cooled so that the actual temperature of background board 410 is reached by predetermined time
To target temperature.
Then, in step S20, the thermal map for referring to background is obtained.It is carried on the back specifically, being acquired using image collecting device 100
The infra-red radiation of scape plate 410, and collected infra-red radiation is converted into electric signal, computer apparatus 200 receives image collector
The electric signal of 410 infra-red radiation of related background board of 100 transmission is set, and the electric signal is handled, to form thermal map signal,
Display device 300 receives the thermal map signal that computer apparatus 200 transmits, according to the thermal map of thermal map signal formation background board 410
It is shown to outside.
Then, in step S30, the thermal map of reference background is divided into multiple regions, and obtains the average temperature in each region
Angle value.Specifically, the thermal map of background board 410 is divided into multiple regions by computer apparatus 200, and according to picture each in each region
The average temperature value in each region is calculated in the temperature sensor of vegetarian refreshments.Here, referring to Fig. 7, it can be by the heat of background board 410
Figure 41 1 is divided into tetra- regions A, B, C, D.
Then, the mean temperature in each region is successively judged for each region of the thermal map of reference background in step S40
It is worth the error of the actual temperature relative to reference background whether within allowed band.Specifically, computer apparatus 200 is for back
Each region of the thermal map 411 of scape plate 410, judges the difference between its average temperature value and the actual temperature of background board 410 one by one
Whether value is less than or equal to preset error amount (for example, ± 0.5 degree).Here, according to the actual situation, can be previously set suitable
When error amount.
If the average temperature value with reference to some region of the thermal map of background exceeds allowed band, in step S50, to this
The average temperature value in region compensates the difference between the mean temperature in the region and the actual temperature with reference to background, so that
Temperature is consistent with the actual temperature with reference to background after the compensation in the region.Specifically, assuming initially that: background board
410 actual temperature is 25 degree, and preset error amount is ± 0.5 degree, referring to Fig. 7, in the thermal map 411 of background board 410,
The detection calculating mean temperature of region A is 23 degree, the detection of region B calculating mean temperature is 24 degree, the detection of region C is calculated and put down
Equal temperature is 25 degree, the detection of region D calculating mean temperature is 26 degree.At this point, the average temperature value of region A, B, D have exceeded it is pre-
The error amount first set, so that computer apparatus 200 compensates respectively for the average temperature value of region A, B, D, also that is, to area
The average temperature value of domain A adds 2 degree, adds 1 degree to the average temperature value of region B, from the average temperature value of the region D degree that subtracts 1, to make
Temperature reaches 25 degree after obtaining the compensation of region A, B, D.
Then, in step S60, judge whether all areas of the thermal map to reference background, complete average temperature value
The error of actual temperature relative to reference background whether the judgement within allowed band.
If the judging result in step S60 is "No", step S40 is returned to.
If being "Yes" in the judging result of step S60, in step S70, infrared thermal imaging is carried out to testee
Detection.Specifically, testee (such as human body) to be placed in the front of background board 410, start to carry out infrared heat to testee
Image checking.
According to the temperature correction method of the infrared thermal imaging detection system 1 of the embodiment of the present invention as described above, to such as people
It, being capable of school based on the stable ambient temperature that Background apparatus 400 provides before the testees such as body carry out infrared thermal imaging detection
Temperature error present in positive infrared thermal imaging detection system, so that the temperature point data of the thermal map of testee everywhere is more
Accurately, imaging surface uniformity is improved, from there through the thermal map of the testees such as human body to the analytical judgment ability of the state of an illness
It can be more accurate.
In explanation above-mentioned, it is described although dividing the situation that region is four with the thermal map 411 of background board 410,
But the present invention is not limited to this, but according to actual needs, the thermal map 411 of background board 410 can be divided into any amount
Region.Obviously, background board 410 thermal map 411 divide region it is more, correction accuracy also can be higher, thus to testee into
After the detection of row infrared thermal imaging, finally obtained thermal map quality is also higher.
More than, the preferred embodiment of the present invention is described in detail.But the present invention is not limited to reality above-mentioned
It applies example, but can be realized with different various forms.Revealed embodiment is of the invention just for the sake of making in this specification
It discloses completely, so that those skilled in the art completely learn that scope of the invention is provided.Protection scope of the present invention
It should be based on the contents of the claims.
Claims (3)
1. a kind of temperature correction method of infrared thermal imaging detection system, comprising:
Step S10, the background board for being disposed with more than two temperature reference calibration sources to array are formed by with reference to background set mesh
Temperature is marked, and the actual temperature with reference to background is made to reach the target temperature；
Step S20 obtains the thermal map with reference to background；
The thermal map with reference to background is divided into multiple regions, and obtains the average temperature value in each region by step S30；
Step S40, for each region of the thermal map with reference to background, successively judge the average temperature value in each region relative to
Whether the error of the actual temperature with reference to background is within allowed band；
If the average temperature value with reference to some region of the thermal map of background exceeds allowed band, in step S50, to this
The average temperature value in region compensates the difference between the mean temperature in the region and the actual temperature with reference to background, so that
Temperature is consistent with the actual temperature with reference to background after the compensation in the region.
2. the temperature correction method of infrared thermal imaging detection system as described in claim 1, which is characterized in that further include as follows
Step:
Step S60 judges whether all areas to the thermal map with reference to background, completes average temperature value relative to institute
State with reference to background actual temperature error whether the judgement within allowed band；
If being negative in the judging result of the step S60, the step S40 is returned to.
3. the temperature correction method of infrared thermal imaging detection system as claimed in claim 1 or 2, which is characterized in that described
Each region is calculated according to the temperature sensor of each pixel in each region of the thermal map with reference to background in step S30
Average temperature value.
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| CN109916519A (en) * | 2019-03-18 | 2019-06-21 | 深圳市沃特沃德股份有限公司 | Detection temperature is most worth the method, apparatus, computer equipment and storage medium of position |
| CN111397736A (en) * | 2020-03-20 | 2020-07-10 | 江苏博子岛智能产业技术研究院有限公司 | Thermal imaging temperature measurement system |
| CN111401349A (en) * | 2020-06-08 | 2020-07-10 | 广州图普网络科技有限公司 | Face temperature measurement method and device, electronic equipment and storage medium |
| CN112858384B (en) * | 2021-01-08 | 2023-06-23 | 湖南中冶长天节能环保技术有限公司 | High-temperature detection-cooling treatment method and system for activated carbon flue gas purification device |
| CN114441048A (en) * | 2022-02-09 | 2022-05-06 | 深兰自动驾驶研究院(山东)有限公司 | Physiological heat map acquisition device and method, electronic equipment and storage medium |
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| CN101806627A (en) * | 2010-03-30 | 2010-08-18 | 中国计量学院 | Method for measuring influence of background factors to infrared temperature measurement |
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| CN1821732A (en) * | 2006-04-06 | 2006-08-23 | 中国人民解放军空军航空医学研究所 | Method and device for real-time correcting infrared measuring temperature |
| CN105136304A (en) * | 2014-05-26 | 2015-12-09 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Temperature calibration method and system |
| CN104614076A (en) * | 2015-01-27 | 2015-05-13 | 天津大学 | Precision calibrating method of infrared thermometer with wide temperature range |
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