CN109269993A - A kind of recognition methods of dissolved oxygen, device, storage medium and equipment - Google Patents
A kind of recognition methods of dissolved oxygen, device, storage medium and equipment Download PDFInfo
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Abstract
The present invention relates to a kind of recognition methods of dissolved oxygen, device, storage medium and equipment, comprising: obtain the dissolved oxygen content of ground black and odorous water sampled point, ground black and odorous water sampled point each wave band water body reflectivity；Obtain the water body reflectivity of black and odorous water sampled point each wave band in unmanned plane multispectral remote sensing photographic device；The water body reflectivity of the dissolved oxygen content of ground black and odorous water sampled point, black and odorous water sampled point each wave band in unmanned plane multispectral remote sensing photographic device is subjected to correlation analysis, determines the water body reflectivity of optimal bands combined；The dissolved oxygen content of water body reflectivity in optimal bands combined is fitted, determines relational model；Obtain the black and odorous water image in region to be measured；According to relational model and black and odorous water image, the distribution of dissolved oxygen is determined.The present invention is not necessarily to region field survey to be measured, without chemical assay is carried out, realizes the quick identification to the dissolved oxygen of the black and odorous water of extensive area.
Description
Technical field
The present invention relates to dissolved oxygen detection fields, more particularly to a kind of recognition methods of dissolved oxygen, device, storage medium
And equipment.
Background technique
Chief component of the surface water body as water resource, being distributed, investigate, administer, planning and monitoring to it also has
Significance.And in the process of city prosperity, industry, agricultural and sanitary wastewater make the surface water body in completed region of the city not
It is limpid again, or even there is the smelly problem that blacks, become the black and odorous water in city.The original that these black and odorous waters are formed
Because be by the dissolved oxygen content in water body it is too low caused by, therefore, by being detected to the dissolved oxygen in black and odorous water, to rear
The distribution and detection of continuous black and odorous water have great directive function.
Inventor has found that the detection to the dissolved oxygen of black and odorous water is usually from ground in carrying out innovation and creation of the invention
Face region to be measured directly acquires the sample of black and odorous water, and is directly obtained by the chemical detection of the sample to black and odorous water molten
The distribution situation of oxygen is solved, this mode is only limited to the research in small range region, and researcher is needed to reach region to be measured
It is acquired, requires chemical detection every time to obtain dissolved oxygen, operate inconvenient.Therefore, how to realize to a wide range of
The dissolution oxygen distribution of the black and odorous water in region is identified, urgent problem to be solved is become.
Summary of the invention
Based on this, the object of the present invention is to provide a kind of recognition methods of dissolved oxygen, have without arriving region to be measured
Field survey is carried out, without progress chemical assay, it can be achieved that the quick knowledge of the dissolved oxygen to the black and odorous water of extensive area
Other advantage.
A kind of recognition methods of dissolved oxygen, includes the following steps:
The dissolved oxygen content and ground black and odorous water sampled point for obtaining ground black and odorous water sampled point are in each wave band
Water body reflectivity；
According to the ground black and odorous water sampled point in the water body reflectivity of each wave band, obtains black and odorous water sampled point and exist
The water body reflectivity of each wave band in unmanned plane multispectral remote sensing photographic device；
The dissolved oxygen content of the ground black and odorous water sampled point and the black and odorous water sampled point is more in unmanned plane
The water body reflectivity of each wave band carries out correlation analysis in spectral remote sensing photographic device, determines the best band of characterization dissolved oxygen
Combined water body reflectivity；
Dissolved oxygen content under the water body reflectivity of optimal bands combined is fitted, determine dissolved oxygen content with most
The relational model of the water body reflectivity of good band combination；Wherein, the water body of the dissolution oxygen distribution and optimal bands combined reflects
The relationship of rate meets: the concentration of dissolved oxygen linearly increases with the increase of the water body reflectivity of optimal bands combined；
The unmanned plane multispectral image in region to be measured is obtained, and determines black and odorous water image；
According to the relational model and the black and odorous water image, the distribution of dissolved oxygen is determined.
By determining the dissolved oxygen of ground black and odorous water sampled point and the best wave of unmanned plane multispectral remote sensing photographic device
The relational model of the water body reflectivity of Duan Zuhe, and then divided according to the space that the black and odorous water in region to be measured can be obtained dissolved oxygen
Cloth, without chemical assay is carried out, is realized to the black smelly of extensive area without carrying out field survey to region to be measured
The quick identification of the dissolved oxygen of water body.
In one embodiment, by will be described anti-in the water body of each wave band according to the ground black and odorous water sampled point
It penetrates rate and carries out convolution algorithm mapping, obtain black and odorous water sampled point each wave band in unmanned plane multispectral remote sensing photographic device
Water body reflectivity, wherein the mode of the convolution algorithm mapping are as follows:
In formula, λ indicates wavelength, and λ min is the start wavelength of unmanned plane multispectral remote sensing photographic device, and λ max is nobody
The termination wavelength of machine multispectral remote sensing photographic device；R (λ) is the water body reflectivity that ground black and odorous water sampled point is λ in wavelength；
F (λ) is spectral response functions；The water body reflectivity of R expression unmanned plane multispectral remote sensing photographic device.
In one embodiment, the table of the relational model of the water body reflectivity of the dissolved oxygen content and optimal bands combined
Show mode are as follows: y=111.514x+6.1708, wherein x indicates that the water body reflectivity of optimal bands combined, y indicate that dissolved oxygen contains
Amount；The water body reflectivity of the optimal bands combined is the water body reflectivity at wave band 660nm and the water at wave band 735nm
The difference of volume reflectivity.
In one embodiment, the unmanned plane multispectral image for obtaining region to be measured, and determine black and odorous water image
The step of, comprising:
Obtain the unmanned plane multispectral image in region to be measured；Wherein, the multispectral image includes shooting to region to be measured
Several continuous unmanned plane multispectral images；
Several continuous unmanned plane multispectral images are spliced, the global image in region to be measured is obtained；
Radiant correction is carried out to the global image, the global image after being corrected；
The global image after correction is handled by sobel operator, obtains global gradient image；
8 field connected domain calculations are used to the global gradient image, the global gradient image are divided into more
A connected domain；
The area that each connected domain is counted by histogram method obtains the connection area of each connected domain, if connected domain
Connection area is not up to preset connection area threshold, then the connected domain is determined as non-black and odorous water image；
If connected domain area reaches preset connection area threshold, according to suspension bed sediment inversion method, the company is calculated
The Suspended Sedimentation Concentration in logical domain；The connected domain is rejected if Suspended Sedimentation Concentration is greater than 100mg/L；Otherwise, by the connected domain
It is determined as black and odorous water image, wherein the calculation formula of the suspension bed sediment inversion method are as follows: y=2570x2-6531x+
3748；Wherein x=lg [R (660)]/lg [R (550)], R (660) indicate that central wavelength is the reflectivity of wave band at 660nm, R
(550) indicate that central wavelength is the reflectivity of wave band at 550nm；Y is concentration of suspension.
By combining sobel operator and Connected area disposal$ mode, the quick determination to black and odorous water is realized.
In one embodiment, the unmanned plane multispectral image in the region to be measured are as follows: multispectral by UAV flight
Several continuous multispectral images that remote sensing photographic device obtains.
In one embodiment, the unmanned plane multispectral image in the region to be measured is that UAV flight's multispectral remote sensing is taken the photograph
The image of the green channel and red channel that are obtained as device, by green channel and red channel with by black and odorous water and other
Atural object is effectively distinguished.
In one embodiment, described according to the relational model and the black and odorous water image, determine point of dissolved oxygen
After cloth, the concentration according to dissolution oxygen distribution is further comprised the steps of:, is that dissolved oxygen lacks area and dissolution by region division to be measured
The normal area of oxygen, and lack area's setting aerator in dissolved oxygen and increase dissolved oxygen content.
The present invention also provides a kind of identification devices of dissolved oxygen, comprising:
Sample point data obtains module, and the dissolved oxygen content and ground for obtaining ground black and odorous water sampled point are black
Water body reflectivity of the smelly water body sampled point in each wave band；
Water body reflectivity obtains module, reflects for the water body according to the ground black and odorous water sampled point in each wave band
Rate obtains the water body reflectivity of black and odorous water sampled point each wave band in unmanned plane multispectral remote sensing photographic device；
Wave band determining module, for by the dissolved oxygen content of the ground black and odorous water sampled point and the black smelly water
The water body reflectivity of sampler body point each wave band in unmanned plane multispectral remote sensing photographic device carries out correlation analysis, determines table
Levy the water body reflectivity of the optimal bands combined of dissolved oxygen；
Relational model determining module, for intending the dissolved oxygen content under the water body reflectivity of optimal bands combined
It closes, determines the relational model of the water body reflectivity of dissolved oxygen content and optimal bands combined；Wherein, the dissolved oxygen content with most
The relationship of the water body reflectivity of good band combination meets: the content of dissolved oxygen with the water body reflectivity of optimal bands combined increasing
Add linear growth；
Black and odorous water image collection module for obtaining the unmanned plane multispectral image in region to be measured, and determines black smelly water
Body image；
Oxygen distribution determining module is dissolved, for determining dissolved oxygen according to the relational model and the black and odorous water image
Distribution.
By determining the dissolved oxygen of ground black and odorous water sampled point and the best wave of unmanned plane multispectral remote sensing photographic device
The relational model of the water body reflectivity of Duan Zuhe, and then divided according to the space that the black and odorous water in region to be measured can be obtained dissolved oxygen
Cloth, without chemical assay is carried out, is realized to the black smelly of extensive area without carrying out field survey to region to be measured
The quick identification of the dissolved oxygen of water body.
The present invention also provides a kind of computer readable storage mediums, store computer program thereon, the computer program
The step of recognition methods of dissolved oxygen described in above-mentioned any one is realized when being executed by processor.
The present invention also provides a kind of computer equipment, including reservoir, processor and it is stored in the reservoir simultaneously
The computer program that can be executed by the processor, the processor are realized when executing the computer program as above-mentioned any one
The step of recognition methods of the item dissolved oxygen.
In order to better understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Detailed description of the invention
Fig. 1 is the flow chart of the recognition methods of dissolved oxygen in the embodiment of the present invention.
Specific embodiment
Referring to Fig. 1, its flow chart for the recognition methods of dissolved oxygen in the embodiment of the present invention, the identification of the dissolved oxygen
Method includes the following steps:
Step S1: the dissolved oxygen content and ground black and odorous water sampled point for obtaining ground black and odorous water sampled point are each
The water body reflectivity of a wave band.
Wherein, the dissolved oxygen content is the content of the molecular oxygen in the air being dissolved in water, and is usually denoted as DO, is used
The milligram number of oxygen indicates in every liter of water.Oxygen in water number be measure water body self-purification ability an index.It is described to obtain
The step of taking the dissolved oxygen of the black and odorous water of ground sampled point are as follows: by the water body of acquisition ground black and odorous water sampled point, then lead to
It crosses chemical detection mode and obtains dissolved oxygen in black and odorous water.
Wherein, the water body reflectivity is water body to the reflected energy of sunlight and the ratio of projectile energy, and in difference
The reflectivity of wave band water body is different.
Wherein, the black and odorous water of the sampled point is directly existing using ASD spectrometer in the water body reflectivity of each wave band
Field measurement collects corresponding unmanned plane wave band by spectral response functions.Ground surface reflectance is the foundation of modeling, can basis
The data on ground establish corresponding model, are directly used in multispectral image and generate dissolved oxygen concentration spatial distribution map.
Step S2: according to the ground black and odorous water sampled point in the water body reflectivity of each wave band, black and odorous water is obtained
The water body reflectivity of sampled point each wave band in unmanned plane multispectral remote sensing photographic device.
Wherein, the black and odorous water obtained from ground each wave band water body reflectivity, and by multispectral in unmanned plane
The black and odorous water in multi-spectral remote sensing image that remote sensing photographic device obtains is different in the water body reflectivity of each wave band, still,
There are mapping relations for the two water body reflectivity, therefore, anti-in the water body of each wave band according to the black and odorous water of the sampled point
Rate is penetrated, can get the water body reflectivity of black and odorous water each wave band in multi-spectral remote sensing image.
Wherein, unmanned plane multispectral remote sensing resolution of photographic device is high, and is protected from weather influences, and can be used for tiny river
The identification of the water pollutions parameter such as TP.
Step S3: the dissolved oxygen content of the ground black and odorous water sampled point and the black and odorous water sampled point are existed
The water body reflectivity of each wave band carries out correlation analysis in unmanned plane multispectral remote sensing photographic device, determines characterization dissolved oxygen
The water body reflectivity of optimal bands combined；
Step S4: the dissolved oxygen content under the water body reflectivity of optimal bands combined is fitted, determines dissolved oxygen
The relational model of the water body reflectivity of content and optimal bands combined；Wherein, the dissolved oxygen content and optimal bands combined
The relationship of water body reflectivity meets: the content of dissolved oxygen linearly increases with the increase of the water body reflectivity of optimal bands combined
It is long.
Step S5: the unmanned plane multispectral image in region to be measured is obtained, and determines black and odorous water image；
Step S6: according to the relational model and the black and odorous water image, the distribution of dissolved oxygen is determined.
By determining the dissolved oxygen of ground black and odorous water sampled point and the best wave of unmanned plane multispectral remote sensing photographic device
The relational model of the water body reflectivity of Duan Zuhe, and then divided according to the space that the black and odorous water in region to be measured can be obtained dissolved oxygen
Cloth, without chemical assay is carried out, is realized to the black smelly of extensive area without carrying out field survey to region to be measured
The quick identification of the dissolved oxygen of water body.
In one embodiment, in step s 2, by by it is described according to the ground black and odorous water sampled point each
The water body reflectivity of wave band carries out convolution algorithm mapping, obtains black and odorous water sampled point in unmanned plane multispectral remote sensing photographic device
In each wave band water body reflectivity the step of, wherein the mode of convolution algorithm mapping are as follows:
In formula, λ indicates wavelength, and λ min is the start wavelength of unmanned plane multispectral remote sensing photographic device, and λ max is nobody
The termination wavelength of machine multispectral remote sensing photographic device；R (λ) is the water body reflectivity that ground black and odorous water sampled point is λ in wavelength；
F (λ) is spectral response functions；The water body reflectivity of R expression unmanned plane multispectral remote sensing photographic device.
In one embodiment, at the water body reflectivity of the optimal bands combined, the content of dissolved oxygen is more, preferably
, the water body reflectivity of the optimal bands combined is the water body reflectivity at wave band 660nm and the water at wave band 735nm
The difference of volume reflectivity.
In one embodiment, the table of the relational model of the water body reflectivity of the dissolved oxygen content and optimal bands combined
Show mode are as follows: y=111.514x+6.1708, wherein x indicates that the water body reflectivity of optimal bands combined, y indicate that dissolved oxygen contains
Amount；The water body reflectivity of the optimal bands combined is the water body reflectivity at wave band 660nm and the water at wave band 735nm
The difference of volume reflectivity.
In one embodiment, the unmanned plane multispectral image for obtaining region to be measured, and determine black and odorous water image
The step of, comprising:
Step S51: the unmanned plane multispectral image in region to be measured is obtained, wherein the multispectral image includes to be measured
Several continuous unmanned plane multispectral images of region shooting.
In one embodiment, the unmanned plane multispectral image in the region to be measured is that UAV flight's multispectral remote sensing is taken the photograph
Several the continuous multispectral images shot as device.
In one embodiment, inventor has found in carrying out innovation and creation of the invention, by using multispectral remote sensing
Black and odorous water and other atural objects can be carried out more apparent area by the image that the green channel and red channel of photographic device obtain
Point, therefore, for convenience of subsequent determining black and odorous water image, pass through the green channel and red channel of multispectral remote sensing photographic device
Multispectral image of the image of acquisition as region to be measured.
Step S52: several continuous unmanned plane multispectral images are spliced, the global image in region to be measured is obtained.
Step S53: radiant correction is carried out to the global image, the global image after being corrected.
Step S54: being handled the global image after correction by sobel operator, obtains global gradient image.
Wherein, Sobel Operator (Sobel operator, referred to as " sobel operator ") is the upper of pixel each in image
The gray value weighted difference in lower four field of left and right, in the global gradient image that edge can reach extreme value and obtain.
Step S55: using 8 field connected domain calculations to the global gradient image, by the global gradient image
It is divided into multiple connected domains；
Step S56: counting the area of each connected domain by histogram method, obtains the connection area of each connected domain, if
The connection area of connected domain is not up to preset connection area threshold, then the connected domain is determined as non-black and odorous water image；
If connected domain area reaches preset connection area threshold, according to suspension bed sediment inversion method, the outstanding of the connected domain is calculated
Floating sediment concentration；The connected domain is rejected if Suspended Sedimentation Concentration is greater than 100mg/L；Otherwise, the connected domain is determined as black
Smelly water body image, wherein the calculation formula of the suspension bed sediment inversion method are as follows: y=2570x2-6531x+3748；Wherein x=
Lg [R (660)]/lg [R (550)], R (660) indicate that central wavelength is the reflectivity of wave band at 660nm, and R (550) indicates center
Wavelength is the reflectivity of wave band at 550nm；Y is concentration of suspension.Wherein, the central wavelength of sensor specific band, represents
The reflectivity of one wave band, the application indicate a certain wave band with central wavelength.
In one embodiment, in step s 6, described according to the relational model and the black and odorous water image, it determines
The step of distribution of dissolved oxygen are as follows: obtain black and odorous water image in the water body reflectivity of the optimal bands combined, further according to most
The water body reflectivity of good band combination calculates the content of dissolved oxygen in black and odorous water.
In one embodiment, the dissolved oxygen in black and odorous water is effectively treated to realize, it is described according to the pass
It is model and the black and odorous water image, further includes step S8 after the distribution for determining dissolved oxygen: is described according to the relationship mould
Type and the black and odorous water image after the distribution for determining dissolved oxygen, further comprise the steps of: the intensive journey according to dissolution oxygen distribution
Region division to be measured is that dissolved oxygen lacks area and the normal area of dissolved oxygen, and lacks area's setting aerator in dissolved oxygen and increase by degree
Dissolved oxygen content.
The present invention also provides a kind of identification devices of dissolved oxygen, comprising:
Sample point data obtains module, and the dissolved oxygen content and ground for obtaining ground black and odorous water sampled point are black
Water body reflectivity of the smelly water body sampled point in each wave band；
Water body reflectivity obtains module, reflects for the water body according to the ground black and odorous water sampled point in each wave band
Rate obtains the water body reflectivity of black and odorous water sampled point each wave band in unmanned plane multispectral remote sensing photographic device；
Wave band determining module, for by the dissolved oxygen content of the ground black and odorous water sampled point and the black smelly water
The water body reflectivity of sampler body point each wave band in unmanned plane multispectral remote sensing photographic device carries out correlation analysis, determines table
Levy the water body reflectivity of the optimal bands combined of dissolved oxygen；
Relational model determining module, for intending the dissolved oxygen content under the water body reflectivity of optimal bands combined
It closes, determines the relational model of the water body reflectivity of dissolved oxygen content and optimal bands combined；Wherein, the dissolved oxygen content with most
The relationship of the water body reflectivity of good band combination meets: the content of dissolved oxygen with the water body reflectivity of optimal bands combined increasing
Add linear growth；
Black and odorous water image collection module for obtaining the unmanned plane multispectral image in region to be measured, and determines black smelly water
Body image；
Oxygen distribution determining module is dissolved, for determining dissolved oxygen according to the relational model and the black and odorous water image
Distribution.
By determining the dissolved oxygen of ground black and odorous water sampled point and the best wave of unmanned plane multispectral remote sensing photographic device
The relational model of the water body reflectivity of Duan Zuhe, and then divided according to the space that the black and odorous water in region to be measured can be obtained dissolved oxygen
Cloth, without chemical assay is carried out, is realized to the black smelly of extensive area without carrying out field survey to region to be measured
The quick identification of the dissolved oxygen of water body.
In one embodiment, the water body reflectivity obtains module, for by will be described black smelly according to the ground
Water body sampled point carries out convolution algorithm mapping in the water body reflectivity of each wave band, and it is more in unmanned plane to obtain black and odorous water sampled point
In spectral remote sensing photographic device the step of the water body reflectivity of each wave band, wherein the mode of the convolution algorithm mapping are as follows:
In formula, λ indicates wavelength, and λ min is the start wavelength of unmanned plane multispectral remote sensing photographic device, and λ max is nobody
The termination wavelength of machine multispectral remote sensing photographic device；R (λ) is the water body reflectivity that ground black and odorous water sampled point is λ in wavelength；
F (λ) is spectral response functions；The water body reflectivity of R expression unmanned plane multispectral remote sensing photographic device.
In one embodiment, in the water body reflectivity of the optimal bands combined, the content of dissolved oxygen is more, preferably
, the water body reflectivity of the optimal bands combined is the water body reflectivity at wave band 660nm and the water at wave band 735nm
The difference of volume reflectivity.
In one embodiment, the table of the relational model of the water body reflectivity of the dissolved oxygen content and optimal bands combined
Show mode are as follows: y=111.514x+6.1708, wherein x indicates that the water body reflectivity of optimal bands combined, y indicate that dissolved oxygen contains
Amount；The water body reflectivity of the optimal bands combined is the water body reflectivity at wave band 660nm and the water at wave band 735nm
The difference of volume reflectivity.
In one embodiment, the black and odorous water image collection module includes:
Area image to be measured obtains module, for obtaining the unmanned plane multispectral image in region to be measured, wherein the mostly light
Spectrum image includes several continuous unmanned plane multispectral images to region to be measured shooting.
Global image obtains module, for splicing several continuous unmanned plane multispectral images, obtains region to be measured
Global image.
Correction module, for carrying out radiant correction to the global image, the global image after being corrected.
Global gradient image obtains module, for being handled by sobel operator the global image after correction, obtains
Global gradient image.
Connected domain division module will be described complete for using 8 field connected domain calculations to the global gradient image
Office's gradient image is divided into multiple connected domains；
Judgment module obtains the connected surface of each connected domain for counting the area of each connected domain by histogram method
Product, if the connection area of connected domain is not up to preset connection area threshold, is determined as non-black and odorous water for the connected domain
Image；If connected domain area reaches preset connection area threshold, according to suspension bed sediment inversion method, the connected domain is calculated
Suspended Sedimentation Concentration；The connected domain is rejected if Suspended Sedimentation Concentration is greater than 100mg/L；Otherwise, the connected domain is determined
For black and odorous water image, wherein the calculation formula of the suspension bed sediment inversion method are as follows: y=2570x2-6531x+3748；Its
Middle x=lg [R (660)]/lg [R (550)], R (660) indicate that central wavelength is the reflectivity of wave band at 660nm, and R (550) is indicated
Central wavelength is the reflectivity of wave band at 550nm；Y is concentration of suspension.Wherein, the central wavelength of sensor specific band, generation
The table reflectivity of one wave band, the application indicate a certain wave band with central wavelength.
In one embodiment, the dissolved oxygen in black and odorous water is effectively treated to realize, it is described according to the pass
It is model and the black and odorous water image, further includes step S8 after the distribution for determining dissolved oxygen: is described according to the relationship mould
Type and the black and odorous water image after the distribution for determining dissolved oxygen, further comprise the steps of: the intensive journey according to dissolution oxygen distribution
Region division to be measured is that dissolved oxygen lacks area and the normal area of dissolved oxygen, and lacks area's setting aerator in dissolved oxygen and increase by degree
Dissolved oxygen content.
The present invention also provides a kind of computer readable storage mediums, store computer program thereon, the computer program
It is realized when being executed by processor as described in any of the above-described the step of the recognition methods of dissolved oxygen.
The present invention also provides a kind of computer equipment, including reservoir, processor and it is stored in the reservoir simultaneously
The computer program that can be executed by the processor, the processor are realized when executing the computer program such as any of the above-described institute
The step of stating the recognition methods of dissolved oxygen.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.
Claims (10)
1. a kind of recognition methods of dissolved oxygen, which comprises the steps of:
Water body of the dissolved oxygen content and ground black and odorous water sampled point of acquisition ground black and odorous water sampled point in each wave band
Reflectivity；
According to the ground black and odorous water sampled point in the water body reflectivity of each wave band, black and odorous water sampled point is obtained at nobody
The water body reflectivity of each wave band in machine multispectral remote sensing photographic device；
The dissolved oxygen content of the ground black and odorous water sampled point and the black and odorous water sampled point is multispectral in unmanned plane
The water body reflectivity of each wave band carries out correlation analysis in remote sensing photographic device, determines the optimal bands combined of characterization dissolved oxygen
Water body reflectivity；
The dissolved oxygen content of water body reflectivity in optimal bands combined is fitted, determines dissolved oxygen content and best band
The relational model of combined water body reflectivity；Wherein, the pass of the water body reflectivity of the dissolved oxygen content and optimal bands combined
System meets: the content of dissolved oxygen linearly increases with the increase of the water body reflectivity of optimal bands combined；
The unmanned plane multispectral image in region to be measured is obtained, and determines black and odorous water image；
According to the relational model and the black and odorous water image, the distribution of dissolved oxygen is determined.
2. the recognition methods of dissolved oxygen according to claim 1, which is characterized in that by will be described black according to the ground
Smelly water body sampled point carries out convolution algorithm mapping in the water body reflectivity of each wave band, obtains black and odorous water sampled point in unmanned plane
The water body reflectivity of each wave band in multispectral remote sensing photographic device, wherein the mode of the convolution algorithm mapping are as follows:
In formula, λ indicates wavelength, and λ min is the start wavelength of unmanned plane multispectral remote sensing photographic device, and λ max is that unmanned plane is more
The termination wavelength of spectral remote sensing photographic device；R (λ) is the water body reflectivity that ground black and odorous water sampled point is λ in wavelength；f(λ)
For spectral response functions；The water body reflectivity of R expression unmanned plane multispectral remote sensing photographic device.
3. the recognition methods of dissolved oxygen according to claim 1, which is characterized in that the dissolved oxygen content and best band
The representation of the relational model of combined water body reflectivity are as follows: y=111.514x+6.1708, wherein x indicates best band
Combined water body reflectivity, y indicate dissolved oxygen content；The water body reflectivity of the optimal bands combined is at wave band 660nm
Water body reflectivity and water body reflectivity at wave band 735nm difference.
4. the recognition methods of dissolved oxygen according to claim 1, which is characterized in that the unmanned plane for obtaining region to be measured
Multispectral image, and the step of determining black and odorous water image, comprising:
Obtain the unmanned plane multispectral image in region to be measured；Wherein, the unmanned plane multispectral image includes clapping region to be measured
Several the continuous unmanned plane multispectral images taken the photograph；
Several continuous unmanned plane multispectral images are spliced, the global image in region to be measured is obtained；
Radiant correction is carried out to the global image, the global image after being corrected；
The global image after correction is handled by sobel operator, obtains global gradient image；
8 field connected domain calculations are used to the global gradient image, the global gradient image is divided into multiple companies
Logical domain；
The area that each connected domain is counted by histogram method obtains the connection area of each connected domain, if the connection of connected domain
Area is not up to preset connection area threshold, then the connected domain is determined as non-black and odorous water image；
If connected domain area reaches preset connection area threshold, according to suspension bed sediment inversion method, the connected domain is calculated
Suspended Sedimentation Concentration；The connected domain is rejected if Suspended Sedimentation Concentration is greater than 100mg/L；Otherwise, the connected domain is determined
For black and odorous water image, wherein the calculation formula of the suspension bed sediment inversion method are as follows: y=2570x2-6531x+3748；Its
Middle x=lg [R (660)]/lg [R (550)], R (660) indicate that central wavelength is the reflectivity of wave band at 660nm, and R (550) is indicated
Central wavelength is the reflectivity of wave band at 550nm；Y is concentration of suspension.
5. the recognition methods of dissolved oxygen according to claim 1, which is characterized in that the unmanned plane mostly light in the region to be measured
Compose image are as follows: several the continuous multispectral images obtained by UAV flight's multispectral remote sensing photographic device.
6. the recognition methods of dissolved oxygen according to claim 1, which is characterized in that the unmanned plane mostly light in the region to be measured
Spectrum image is the image of the green channel and red channel that are obtained by UAV flight's multispectral remote sensing photographic device.
7. the recognition methods of dissolved oxygen according to claim 1, which is characterized in that described according to the relational model and institute
Black and odorous water image is stated, after the distribution for determining dissolved oxygen, further comprises the steps of: the concentration according to dissolution oxygen distribution, it will be to
Surveying region division is that dissolved oxygen lacks area and the normal area of dissolved oxygen, and lacks area's setting aerator increase dissolved oxygen in dissolved oxygen and contain
Amount.
8. a kind of identification device of dissolved oxygen characterized by comprising
Sample point data obtains module, the black smelly water of dissolved oxygen content and ground for obtaining ground black and odorous water sampled point
Water body reflectivity of the sampler body point in each wave band；
Water body reflectivity obtain module, for according to the ground black and odorous water sampled point each wave band water body reflectivity,
Obtain the water body reflectivity of black and odorous water sampled point each wave band in unmanned plane multispectral remote sensing photographic device；
Wave band determining module, for adopting the dissolved oxygen content of the ground black and odorous water sampled point and the black and odorous water
The water body reflectivity of sampling point each wave band in unmanned plane multispectral remote sensing photographic device carries out correlation analysis, determines that characterization is molten
Solve the water body reflectivity of the optimal bands combined of oxygen；
Relational model determining module, for the dissolved oxygen content under the water body reflectivity of optimal bands combined to be fitted,
Determine the relational model of the water body reflectivity of dissolved oxygen content and optimal bands combined；Wherein, the dissolved oxygen content and best
The relationship of the water body reflectivity of band combination meets: the concentration of dissolved oxygen with the water body reflectivity of optimal bands combined increase
It is linear to increase；
Black and odorous water image collection module for obtaining the unmanned plane multispectral image in region to be measured, and determines black and odorous water figure
Picture；
Oxygen distribution determining module is dissolved, for determining point of dissolved oxygen according to the relational model and the black and odorous water image
Cloth.
9. a kind of computer readable storage medium, stores computer program thereon, which is characterized in that the computer program is located
It manages and is realized when device executes as described in any one of claim 1 to 7 the step of the recognition methods of dissolved oxygen.
10. a kind of computer equipment, which is characterized in that including reservoir, processor and be stored in the reservoir and can
The computer program executed by the processor, the processor realize such as claim 1 to 7 when executing the computer program
Any one of described in dissolved oxygen recognition methods the step of.
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