CN206118799U - Cultured fish direction survey system of moving about - Google Patents
Cultured fish direction survey system of moving about Download PDFInfo
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- CN206118799U CN206118799U CN201621035679.9U CN201621035679U CN206118799U CN 206118799 U CN206118799 U CN 206118799U CN 201621035679 U CN201621035679 U CN 201621035679U CN 206118799 U CN206118799 U CN 206118799U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The utility model relates to a cultured fish direction survey system of moving about, this system include nearly infrared camera and with the master controller that nearly infrared camera connects, wherein: the master controller is used for control the nearly infrared image of fish in the nearly infrared camera collection fish pond, and according to nearly infrared image confirms the direction of moving about of fish. The utility model discloses a nearly infrared camera gathers the direction of moving about of fish, then adopts the master controller to carry out data processing, and then the direction of being moved about. Because the utility model discloses a be that nearly infrared camera carries out image acquisition, and the near infrared band is in non - visible light scope, especially adapted being applied to among the dark batch production recirculating water aquaculture of light condition. Simultaneously, can not cause the influence to the normal growth of fish.
Description
Technical field
This utility model is related to cultural technique field, more particularly, to a kind of cultured fishes swimming direction measurement system.
Background technology
With the expansion and the development of information technology of industrialized aquiculture scale, it is necessary to in aquaculture process
The real-time behavior of cultivation object is monitored.Wherein, the swimming direction of Fish is an important finger for weighing Fish group behavior
Mark.Therefore, the swimming direction information for promptly and accurately obtaining Fish can provide important method foundation for subsequent rows for monitoring analysis,
It is significant to follow-up study fish disease early warning, throwing feeding control etc..
The method that at present measure in fish swimming direction mainly uses conventional machines vision.Generally image is modeled
Analyzing and processing, this kind of method low cost, but there is also many weak points.For example, in actual production process, batch production circulation
The general light of water cultivating workshop, than dark, is to obtain preferable effect, needs to increase light source or extra light filling, it is possible to can shadow
Ring the normal growth of Fish.
Utility model content
For disadvantages described above, this utility model provides a kind of cultured fishes swimming direction measurement system, it is adaptable to light line
In the dark industrial circulating water cultivating of part, and the normal growth of Fish will not be impacted.
This utility model provide cultured fishes swimming direction measurement system include near infrared camera and with the near-infrared
The main controller of camera connection, wherein：
The main controller is used to control the near-infrared image of Fish in the near infrared camera collection fishpond, and according to described
Near-infrared image determines the swimming direction of the Fish.
Optionally, the system also includes the near-infrared light source being connected with the main controller；
The main controller is additionally operable to control the opening and closing of the near-infrared light source；
The near-infrared light source is used to when opening be the near infrared camera light filling.
Optionally, the near-infrared light source includes enclosing several near-infrared lamps being located at around the near infrared camera, respectively
The optical axis of individual near-infrared lamp is parallel with the optical axis of the near infrared camera, and the focus of each near-infrared lamp is at grade.
Optionally, the system also includes：
Water treatment facilities, for carrying out physical filtering and/or biochemistry filtered to the breeding water in the fishpond.
Optionally, the main controller specifically for：
According to the luminance difference of each pixel in the near-infrared image, background image is determined；
According to the brightness of the brightness of each pixel in the near-infrared image and corresponding pixel points in the background image,
Determine the position that each bar fish is located；
According to edge calculations algorithm, the fish of pair determination out position carries out edge segmentation；
It is determined that splitting the head and barycenter of the fish for obtaining；
According to the head of the fish relative to the direction of barycenter, the swimming direction of the fish is determined.
Optionally, the main controller is additionally operable to：
Before it is determined that splitting the head and barycenter of the fish for obtaining, filtered according to each bar fish for obtaining is split,
Using pixel number more than default minimum threshold and less than default max-thresholds fish as it needs to be determined that head and barycenter
Fish.
Optionally, the main controller specifically for：It is described to determine the head for splitting the fish for obtaining, including：
It is determined that splitting the minimum enclosed rectangle of the fish for obtaining；
The minimum enclosed rectangle is divided into into three sub- rectangles, length of the three sub- rectangles along the minimum enclosed rectangle
The arrangement of degree direction；
Calculate the average brightness value of each pixel of first sub- rectangle and fish in the sub- rectangle in three sub- rectangles
Width；
Calculate the average brightness value of each pixel of the 3rd submatrix and fish in the submatrix in three submatrixs
Width；
By the submatrix that average brightness value and width in first sub- rectangle and the 3rd submatrix are larger
As the position of fish head；
Wherein, the width is the length scale of the width along the minimum enclosed rectangle.
The cultured fishes swimming direction measurement system that this utility model is provided, using near infrared camera the travelling of Fish is gathered
Direction, then carries out data processing using main controller, and then obtains swimming direction.Figure is carried out due to using near infrared camera
As collection, and near infrared band is in non-visible light range, is highly suitable to be applied for the dark industrial circulating water of light condition and supports
In growing.Meanwhile, the normal growth of Fish will not be impacted.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present disclosure or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Disclosed some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these figures.
Fig. 1 shows the scheme of installation of cultured fishes swimming direction measurement system in the embodiment of this utility model one；
Fig. 2 shows the decile schematic diagram of the minimum enclosed rectangle of fish in the embodiment of this utility model one；
Description of reference numerals：
1- near infrared cameras；2- main controllers；3- near-infrared light sources；4- fishponds；5- water treatment facilities.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present disclosure, the technical scheme in the embodiment of the present disclosure is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than the embodiment of whole.
Based on the embodiment in the disclosure, it is all that those of ordinary skill in the art are obtained under the premise of creative work is not made
Other embodiment, belongs to the scope of disclosure protection.
This utility model provides a kind of cultured fishes swimming direction measurement system, as shown in figure 1, the system includes near-infrared
Camera 1 and the main controller 2 being connected with the near infrared camera 1, wherein：
The main controller 2 be used for control the near infrared camera 1 collection fishpond 4 in Fish near-infrared image, and according to
The near-infrared image determines the swimming direction of the Fish.
In practical application, the near infrared camera 1 can be arranged on the top in fishpond 4, to gather the near-infrared of Fish
Image.Now, can be by the optical axis of infrared camera perpendicular to the water surface of fishpond 4.
In the swimming direction measurement system that this utility model is provided, the swimming direction of Fish is gathered using near infrared camera 1,
Then data processing is carried out using main controller 2, and then obtains swimming direction.Image is carried out due to using near infrared camera 1
Collection, and near infrared band is in non-visible light range, is highly suitable to be applied for the dark industrial circulating water cultivating of light condition
In.Based on strong absorbability of the water near infrared band light, the brightness of object submerged in water depend on light from light source to
Target object returns to the path of camera again, and then determines swimming direction.Meanwhile, the normal growth of Fish will not be caused
Affect.
In the specific implementation, the swimming direction measurement system that this utility model is provided can also include and the main controller 2
The near-infrared light source 3 of connection；Corresponding, the main controller 2 is additionally operable to control the opening and closing of the near-infrared light source 3；Institute
Near-infrared light source 3 is stated for being the light filling of the near infrared camera 1 when opening.Here, using near-infrared light source 3 to near-infrared phase
Machine 1 carries out light filling, to improve the image quality of collection.
Wherein, the concrete structure and set-up mode of near-infrared light source 3 can be selected as needed.For example, near-infrared
Light source 3 includes enclosing several near-infrared lamps being located at around the near infrared camera 1, and the optical axis of each near-infrared lamp is near with described
The optical axis of infrared camera 1 is parallel, and the focus of each near-infrared lamp is at grade.Like this, each near-infrared lamp can
It is identical with the light filling amount near infrared camera 1 in any direction.
Wherein, the quantity of near-infrared lamp, the wavelength of near-infrared lamp launching light, power of near-infrared lamp etc. can be selected voluntarily
Select, for example, 8, wavelength is 820nm, power is 3W, the power of whole near-infrared light source 3 is 24W, these far-infrared lamps with
The distance between camera is 5cm.
In the specific implementation, in order to purify to the breeding water in fishpond 4, the swimming direction that this utility model is provided
Measurement system can also include：Water treatment facilities 5, for carrying out physical filtering and/or life to the breeding water in the fishpond 4
Change and filter.
Wherein, physical filtering refers to the large granular impurities such as feces, the residual bait in eliminating water.
Wherein, the biochemistry filtered ammonia nitrogen referred in separation water and nitrite, ultraviolet ray sterilization bactericidal etc..
In the specific implementation, the size and material in fishpond 4 can be selected as the case may be, and for example, 1.2m is high, directly
Footpath is the glass jar fishpond 4 of 1.5m.
In the specific implementation, main controller 2 can adopt PC, industrial computer.
In the specific implementation, the main controller 2 determines that the mode of swimming direction has various according to near-infrared image, wherein one
Kind of mode is：
S1, according to the luminance difference of each pixel in the near-infrared image, determine background image；
S2, according to the brightness of each pixel in the near-infrared image with the background image corresponding pixel points it is bright
Degree, determines the position that each bar fish is located；
S3, according to edge calculations algorithm, pair determine that the fish of out position carries out edge segmentation；
S4, determination split the head and barycenter of the fish for obtaining；
S5, according to the head of the fish relative to the direction of barycenter, determine the swimming direction of the fish.
Main controller 2, by determining background image, is then based on background image and determines each bar fish in above-mentioned processing procedure
Position, and using each bar fish as target, carry out edge segmentation, determine barycenter and head, then according to the relative of barycenter and head
Position, determines swimming direction.It is, of course, also possible to determine swimming direction using other modes, do not repeat one by one here.
It will be appreciated that as each frame near-infrared image for collecting, the trip of fish can be determined by said process
Dynamic direction.
In near-infrared image the brightness of fish than the wall of fishpond 4 return come brightness it is high, based on this, in S1, background image
Determination process can be：When the average pixel luminance of (x, y) of certain positionMore than δ Ix,y(0<δ<1, Ix,yFor picture herein
Plain brightness) when, now background luminance is Ix,y, otherwise background luminance isFish in such that it is able to remove background are obtaining
Image background.Wherein, coefficient δ needs to be obtained according to field condition test of many times.
In S2, for position (x, y),And σx,yFor mean flow rate and background variance, Ix,yFor the brightness of pixel.
IfThen this point is background, on the contrary the then target to detect.
In S3, fish body depth is different, and brightness is different, and this feature can be used for the fish body edge segmentation for overlapping up and down.Wherein,
Edge calculations algorithm, for example, the edge calculations algorithm based on Roberts operators.
In S5, compared to fish other parts, fish head portion reflect light brightness it is bright and with width width, may be used to determine
The direction of motion of fish.
In the specific implementation, the main controller 2 in the swimming direction measurement system that this utility model is provided can be also used for：
It is determined that split before the head and barycenter of the fish for obtaining, filtered according to each bar fish for obtaining is split, by pixel
Number more than default minimum threshold and less than default max-thresholds fish as it needs to be determined that the fish of head and barycenter.
Here, excessive or too small object compared with fish, filter can be removed according to pixel quantity by filter process
Except noise and the speckle without detached overlap.Wherein, the pixel of 20 fishes that minimum threshold can be maximum according to
Several meansigma methodss, max-thresholds can be the meansigma methodss of the number of the pixel according to 20 minimum fishes.
In the specific implementation, the S4 performed by the main controller 2 can be specifically included：
It is determined that splitting the minimum enclosed rectangle of the fish for obtaining；
The minimum enclosed rectangle is divided into into three sub- rectangles, length of the three sub- rectangles along the minimum enclosed rectangle
The arrangement of degree direction；
Calculate the average brightness value of each pixel of first sub- rectangle and fish in the sub- rectangle in three sub- rectangles
Width；
Calculate the average brightness value of each pixel of the 3rd submatrix and fish in the submatrix in three submatrixs
Width；
By the submatrix that average brightness value and width in first sub- rectangle and the 3rd submatrix are larger
As the position of fish head；
Wherein, the width is the length scale of the width along the minimum enclosed rectangle.
Here, as shown in Fig. 2 by each target be divided into three parts and calculate before and after 1/3rd brightness and width
Degree, 1/3rd wide and bright fish portions are considered as fish head, may thereby determine that fish movement direction.
In the specific implementation, in centroid position, really timing can adopt following manner to main controller 2：
The barycenter of target area is calculated using image moment, using single order away from calculating target centroid, for target image, its rank
Away from can be expressed as：
Wherein, p and q is nonnegative integer, and i and j is image pixel index, and its target centroid obtains coordinate formula and is：
In the specific implementation, if brightness is brighter and wider width part falls in barycenter side, the sub- square of the side end
Battle array is considered as the head of fish, and the submatrix of end side is the afterbody of fish.
It should be noted that although the main controller in this utility model is related to flow chart of data processing, this practicality is new
The improvements of type not here, and main controller data handling procedure it is fairly simple, can be using of the prior art hard
Part module is realized, therefore is not related to the improvement of computer program.
In description of the present utility model, a large amount of details are illustrated.It is to be appreciated, however, that reality of the present utility model
Applying example can put into practice in the case of without these details.In some instances, known method, knot is not been shown in detail
Structure and technology, so as not to obscure the understanding of this description.
Above example only to illustrate the technical solution of the utility model, rather than a limitation；Although with reference to aforementioned reality
Apply example to be described in detail this utility model, it will be understood by those within the art that；It still can be to front
State the technical scheme described in each embodiment to modify, or equivalent is carried out to which part technical characteristic；And these
Modification is replaced, and does not make the spirit and model of each embodiment technical scheme of essence disengaging this utility model of appropriate technical solution
Enclose.
Claims (7)
1. a kind of cultured fishes swimming direction measurement system, it is characterised in that including near infrared camera and with the near-infrared phase
The main controller of machine connection, wherein：
The main controller is used to control the near-infrared image of Fish in the near infrared camera collection fishpond, and according to described near red
Outer image determines the swimming direction of the Fish.
2. system according to claim 1, it is characterised in that also include the near-infrared light source being connected with the main controller；
The main controller is additionally operable to control the opening and closing of the near-infrared light source；
The near-infrared light source is used to when opening be the near infrared camera light filling.
3. system according to claim 2, it is characterised in that the near-infrared light source includes enclosing being located at the near-infrared phase
Several near-infrared lamps around machine, the optical axis of each near-infrared lamp is parallel with the optical axis of the near infrared camera, and each is near
The focus of infrared lamp is at grade.
4. system according to claim 1, it is characterised in that also include：
Water treatment facilities, for carrying out physical filtering and/or biochemistry filtered to the breeding water in the fishpond.
5. system according to claim 1, it is characterised in that the main controller specifically for：
According to the luminance difference of each pixel in the near-infrared image, background image is determined；
According to the brightness of the brightness of each pixel in the near-infrared image and corresponding pixel points in the background image, it is determined that
The position that each bar fish is located；
According to edge calculations algorithm, the fish of pair determination out position carries out edge segmentation；
It is determined that splitting the head and barycenter of the fish for obtaining；
According to the head of the fish relative to the direction of barycenter, the swimming direction of the fish is determined.
6. system according to claim 5, it is characterised in that the main controller is additionally operable to：
Before it is determined that splitting the head and barycenter of the fish for obtaining, filtered according to each bar fish for obtaining is split, by picture
Vegetarian refreshments number more than default minimum threshold and less than default max-thresholds fish as it needs to be determined that the fish of head and barycenter.
7. system according to claim 5, it is characterised in that the main controller specifically for：The determination is split
To the head of fish include：
It is determined that splitting the minimum enclosed rectangle of the fish for obtaining；
The minimum enclosed rectangle is divided into into three sub- rectangles, three sub- rectangles are along the length side of the minimum enclosed rectangle
To arrangement；
Calculate the width of fish in the average brightness value of each pixel of first sub- rectangle and the sub- rectangle in three sub- rectangles
Degree；
Calculate the width of fish in the average brightness value of each pixel of the 3rd submatrix and the submatrix in three submatrixs
Degree；
Using the larger submatrix of average brightness value and width in first sub- rectangle and the 3rd submatrix as
The position of fish head；
Wherein, the width is the length scale of the width along the minimum enclosed rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621035679.9U CN206118799U (en) | 2016-08-31 | 2016-08-31 | Cultured fish direction survey system of moving about |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621035679.9U CN206118799U (en) | 2016-08-31 | 2016-08-31 | Cultured fish direction survey system of moving about |
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| CN206118799U true CN206118799U (en) | 2017-04-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106417104A (en) * | 2016-08-31 | 2017-02-22 | 北京农业信息技术研究中心 | Cultured fish swimming direction detecting system and method |
| CN112834780A (en) * | 2021-01-05 | 2021-05-25 | 三峡大学 | Infrared seaweed particle image speed measuring device and measuring method thereof |
-
2016
- 2016-08-31 CN CN201621035679.9U patent/CN206118799U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106417104A (en) * | 2016-08-31 | 2017-02-22 | 北京农业信息技术研究中心 | Cultured fish swimming direction detecting system and method |
| CN112834780A (en) * | 2021-01-05 | 2021-05-25 | 三峡大学 | Infrared seaweed particle image speed measuring device and measuring method thereof |
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