CN108739591A - It is a kind of based on dynamic structure light measurement cross fish pass cross fish amount automatic counter system and method for counting - Google Patents
It is a kind of based on dynamic structure light measurement cross fish pass cross fish amount automatic counter system and method for counting Download PDFInfo
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- 241000251468 Actinopterygii Species 0.000 title claims abstract description 145
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005259 measurement Methods 0.000 title claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000000284 extract Substances 0.000 claims description 4
- 230000009182 swimming Effects 0.000 claims description 4
- 238000005194 fractionation Methods 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000029264 phototaxis Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 241000045921 Arcos nudus Species 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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- 238000005859 coupling reaction Methods 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000005112 rheotaxis Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/90—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination
- A01K61/95—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination specially adapted for fish
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Abstract
The invention discloses a kind of, and the fish pass of crossing based on dynamic structure light measurement crosses fish amount automatic counter system and method for counting, the system includes the detecting unit and structured light light source being mounted on above fish pass, the detecting unit includes the underwater CCD camera being electrically connected with central processing unit, acoustic transceiver, aspect sensor and communication interface, wherein underwater CCD camera and acoustic transceiver be arranged in detecting unit surface and towards cross fish pass, communication interface then with mounted on data processing stations outside fish pass couple, include the data acquisition unit being connected with each other and counting unit in data processing stations.Fish pass of crossing disclosed in this invention based on dynamic structure light measurement crosses fish amount automatic counter system, pass through the mounting structure radiant above photographed scene, and projected into fish pass, projection structure smooth surface can be made farthest to be full of the cross section of fish pass, and then improve accuracy.
Description
Technical field
The invention belongs to underwater target detections and counted fields, more particularly to one kind in the field is based on dynamic structure light
The fish pass of crossing of measurement crosses fish amount automatic counter system and method for counting.
Background technology
China has built a large amount of various power stations in recent years, and the dam body in these power stations causes tired to fish free migration
Difficulty, it is especially seasonal to migrate the problem of bringing with physiological, threaten the existence and procreation of fish.To solve this problem,
Specially be designed on dam newly-built at present for fish by fish pass, and attempted fish using light, sound and biochemical attracting technology
It is induced to fish pass entrance, guide and it is helped to pass through fish pass.But it is different fish and passes through different, the different fish of the ability of fish pass
Road type is but also fish crosses dam effect difference, thus needs to count to actually crossing movement pattern of fish condition in fish pass, to combine in fact
Border situation optimizes fish channel structure, provides foundation for the formulation etc. of fish protection measure.But due to crossing fish period, number
Amount etc. is more random, it is impossible to is monitored to fish pass by artificial twenty four hours, need exploitation automation and intelligentized
Monitoring, statistical method.Research shows that general magnetic, electricity and contact class sensor are all difficult to competent fish Counts, and vision
Technology have it is non-contact, visualization, signal easily acquire transmission the advantages of, can be applied to fish pass cross fish count exploitation, but according to
So there are many technological difficulties, be mainly manifested in low visibility under nature water environment, scattering, the reflection of light are stronger so that video
Poor contrast brings difficulty to fish target identification；Fish is flexible body, and posture is changeable during travelling, and size is removed between similar fish
It is outer also lack significantly can distinguishing characteristics, cause difficulty to fish target lock-on, tracking；Fish generally has phototaxis or rheotaxis,
Under field illumination light source and fish pass flow, fish, which easily hovers in camera field of view, trembles fin causes figure's variation, rolling, migrates etc.,
These all cause difficulty to counting.
Chinese invention patent application CN104966122A discloses a kind of live fish based on computer vision and counts automatically
System, it is proposed that a kind of video count method can be used for fry numeration, fry counting, but because of the limitation of its Experimental Establishment, condition, method etc., no
It is suitble to cross the use of fish meter number occasion in the especially true dam fish pass of natural water environment, is primarily due to hardware aspect fish pass ruler
Very little only several tens cm so that the necessary size of the fish of detection is sufficiently small, and scope of activities is small, and trip state is single, and needs additional filter
Water tank, clingfish device divide fish device etc., these restrictive conditions are difficult to realize in true dam fish pass monitoring of environmental.The hair
Bright middle choose has the experiment fish pass of descending grade along downbeam, it is believed that detect certain tracked fish present frame barycenter
Coordinate declines hour counter compared with previous frame and adds, and it is irregular that actually fish moves about in fish pass, and Common Fish is smaller one
Quickly alter trip up and down along depth of water direction in region, or be suspended in somewhere wag the tail shake cause centroid position change and actually have no
Apparent displacement, especially in the case where there is light source, for the shoal of fish because there is phototaxis easily to surround light source in " whirlpool " shape around trip, these are common
The case where can all make the counting rule of the patent disclosure fail.In addition, " normal background " that the patent uses, i.e., shoot first
And extract the scene that no fish occurs and be used as normal background template, hereafter current frame image and normal background template are poor when monitoring
Point seek foreground fish, this is also unworkable in the true dam fish pass because water quality, flow velocity in dam fish pass, from
Right ambient lighting etc. can change, and cause visibility different, i.e., background can change, not using fixed background template
It is applicable in.
Invention content
The technical problems to be solved by the invention be just to provide it is a kind of based on dynamic structure light measurement cross fish pass cross fish amount
Automatic counter system and method for counting.
The present invention adopts the following technical scheme that：
It is a kind of based on dynamic structure light measurement cross fish pass cross fish amount automatic counter system, the improvement is that：It is described
System include the detecting unit and structured light light source being mounted on above fish pass, the detecting unit includes and central processing
Underwater CCD camera, acoustic transceiver, aspect sensor and the communication interface of device electrical connection, wherein underwater CCD camera and acoustics are received
Hair device is arranged in detecting unit surface and towards crossing fish pass, communication interface then with mounted on data processing stations outside fish pass
Coupling, interior data processing stations include the data acquisition unit being connected with each other and counting unit.
Further, structured light light source is mounted in detecting unit above the photographed scene of underwater CCD camera.
Further, the light that structured light light source is sent out is laser.
It is a kind of based on dynamic structure light measurement cross fish pass cross fish amount automatic counting method, it is improved in that including
Following steps：
(1) video that fish swims across the variation of structure smooth surface hour wheel profile is taken using underwater CCD camera；
(2) video fractionation is carried out, same fish is divided into several pieces of contour lines different in size；
(3) average filter method is used to reduce picture noise, it is assumed that a width size is the original image X (a, b) of N*N, and M is choosing
The total number of all pixels corresponding to modulus plate, Y (c, d) be by average filter treated image,
For (a, b) value range from 0,1,2 to N-1, s indicates the pixel region set for (a, b) with center in formula；
(4) picture obtained will be split and extracts one every fixed number, matching fusion treatment is carried out, if water in fish pass
Flow direction is Y-axis, is X-axis perpendicular to the direction of flow and side wall, then effectively respectively transports in counting region in the picture extracted
The geometric center of the contour line of moving-target is respectively：
Q1(x1,y1)、Q2(x2,y2)、Q3(x3,y3)、、、Qn(xn,yn),
Subscript indicates picture sequence numbers, since contour line center is constant always in picture, i.e. x1=x2=x3=...=
xn、y1=y2=y3=...=yn,
So can remove x, all pictures can be fused to by the subscript of y：
Q1(x,y)+Q2(x,y)+Q3(x,y)+…+Qn(x, y)=Q1(x,y)+Q2(λx,y)+Q3(2λx,y)+…+Qn((n-
1) λ x, y) wherein λ be fish average travelling speed；
(5) judge the swimming direction of fish according to the direction in fish head portion, it is consistent with water (flow) direction for downbeam, with flow
Direction is on the contrary countercurrent direction；
(6) the quantity n for all fishes that statistics occurs in entire count period1And the quantity n of the fish of countercurrent direction travelling2,
Then the quantity of the fish of downbeam is n1-n2。
The beneficial effects of the invention are as follows：
Fish pass of crossing disclosed in this invention based on dynamic structure light measurement crosses fish amount automatic counter system, by shooting
Mounting structure radiant above scene, and projected into fish pass, projection structure smooth surface can be made farthest to be full of fish pass
Cross section, and then improve accuracy.It is used as effective counting by choosing a part of region within the scope of underwater CCD camera photographed scene
Area only starts when fish starts to swim into the region and is monitored to fish, to reduce calculation amount, improves real-time.
Fish pass of crossing disclosed in this invention based on dynamic structure light measurement crosses fish amount automatic counting method, is surveyed using optics
The method programming count of amount is crossed in fish pass and crosses fish quantity, and the interference to fish is avoided, and having reached keeps fish swimming state true certainly
By the purpose changed.By image preprocessing, illumination variation, water fluctuation, static state in effective counting region can be adaptively excluded
The interference for for example underwater rubbish of sundries that background, fixed position are swung.By way of to splitting picture every several extractions, significantly
Reduce calculation amount, more can timely feed back in fish pass and cross fish information.Fish body contour line is shot by Structured Illumination
Mode, can adapt to really cross fish pass in silt it is more, the environment of visual field muddiness.By the travelling side for identifying fish in fish pass
To, can in fish pass fair current and adverse current cross fish quantity count respectively, be adapted to it is different research angles needs.
Description of the drawings
Fig. 1 is the scheme of installation of system disclosed in the embodiment of the present invention 1；
Fig. 2 is the composition schematic diagram of detecting unit in system disclosed in the embodiment of the present invention 1；
Fig. 3 is the contour line that certain fish is at a time taken by CCD camera；
Fig. 4 is the monitoring knot when certain fish first half enters count block using 1 disclosed method of the embodiment of the present invention
Fruit is schemed；
Fig. 5 is to use monitoring result figure of 1 disclosed method of the embodiment of the present invention when certain fish is completely into count block；
Fig. 6 is the true figure of the small fish model used in Fig. 4 and Fig. 5；
Fig. 7 be using 1 disclosed method of the embodiment of the present invention two fishes simultaneously pass through structure smooth surface when monitoring result
Figure；
Fig. 8 is the true figure of the two small fish models used in Fig. 7.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, right below in conjunction with drawings and examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1, as shown in Figure 1, present embodiment discloses a kind of, the fish pass of crossing based on dynamic structure light measurement crosses fish amount
Automatic counter system, the system includes being mounted on the detecting unit 2 and structured light light source 4 of 1 top of fish pass, such as Fig. 2 institutes
Show, the detecting unit 2 includes the underwater CCD camera 10 being electrically connected with central processing unit 16, acoustic transceiver 12, orientation biography
Sensor 14 and communication interface 18, wherein underwater CCD camera and acoustic transceiver be arranged in detecting unit surface and towards cross fish pass,
Communication interface then with mounted on data processing stations 3 outside fish pass couple, include being connected with each other in data processing stations
Data acquisition unit and counting unit.
In the present embodiment, structured light light source is mounted in detecting unit above the photographed scene of underwater CCD camera.Structure
The light that radiant is sent out is laser.
The course of work of system disclosed in the present embodiment is Unclosing structure radiant, when acoustic transceiver has detected fish
When group passed through fish pass, enabling signal is sent out to central processing unit, central processing unit obtains underwater CCD phases by aspect sensor
The camera lens of CCD camera is adjusted to the position of the face shoal of fish after and starts underwater CCD camera by the camera lens of machine, underwater CCD phases
The video information that machine is obtained passes through through central processing unit in data processing stations outside communications interface transmission to fish pass excessively
Result is transmitted to meter by data acquisition unit, data acquisition unit by parsing the quantity of fish in the acquiring video information shoal of fish
Counting unit preserves.
The present embodiment also disclose it is a kind of based on dynamic structure light measurement cross fish pass cross fish amount automatic counting method, including
Following steps：
(1) video that fish swims across the variation of structure smooth surface hour wheel profile is taken using underwater CCD camera；
(2) video fractionation is carried out, same fish is divided into several pieces of contour lines different in size；
(3) average filter method is used to reduce picture noise, it is assumed that a width size is the original image X (a, b) of N*N, and M is choosing
The total number of all pixels corresponding to modulus plate, Y (c, d) be by average filter treated image,
For (a, b) value range from 0,1,2 to N-1, s indicates the pixel region set for (a, b) with center in formula；
(4) picture obtained will be split and extracts one every fixed number, matching fusion treatment is carried out, if water in fish pass
Flow direction is Y-axis, is X-axis perpendicular to the direction of flow and side wall, then effectively respectively transports in counting region in the picture extracted
The geometric center of the contour line of moving-target is respectively：
Q1(x1,y1)、Q2(x2,y2)、Q3(x3,y3)、、、Qn(xn,yn),
Subscript indicates picture sequence numbers, since contour line center is constant always in picture, i.e. x1=x2=x3=...=
xn、y1=y2=y3=...=yn,
So can remove x, all pictures can be fused to by the subscript of y：
Q1(x,y)+Q2(x,y)+Q3(x,y)+…+Qn(x, y)=Q1(x,y)+Q2(λx,y)+Q3(2λx,y)+…+Qn((n-
1) λ x, y) wherein λ be fish average travelling speed；
(5) judge the swimming direction of fish according to the direction in fish head portion, it is consistent with water (flow) direction for downbeam, with flow
Direction is on the contrary countercurrent direction；
(6) the quantity n for all fishes that statistics occurs in entire count period1And the quantity n of the fish of countercurrent direction travelling2,
Then the quantity of the fish of downbeam is n1-n2。
Fig. 3 is on data processing stations, after Matlab splits video, when a certain model fish passes through structure smooth surface
The situation of change of the contour line left, closely surrounds the above method, when the first half of fish is after structure smooth surface, data processing work
It is Fig. 4 to make the profile of fish that station is dealt, and when whole fish is after structure smooth surface, is dealt by data processing stations
Fish profile be Fig. 5, it is unanimous on the whole compared with the shape of Fig. 6 realistic model fishes.Fig. 7 is that two model fishes pass through structure light
It is the case where face, unanimous on the whole compared with the shape of Fig. 8 realistic model fishes.It can be known simultaneously by the method disclosed in the present embodiment
It does not lock, illustrates that the method disclosed in the present embodiment is feasible.
Claims (4)
1. a kind of fish pass of crossing based on dynamic structure light measurement crosses fish amount automatic counter system, it is characterised in that：The system
Include mounted on detecting unit above fish pass and structured light light source, the detecting unit include being electrically connected with central processing unit
Underwater CCD camera, acoustic transceiver, aspect sensor and the communication interface connect, wherein underwater CCD camera and acoustic transceiver cloth
Set on detecting unit surface and towards crossing fish pass, communication interface then with mounted on data processing stations outside fish pass couple,
Include the data acquisition unit being connected with each other and counting unit in data processing stations.
2. the fish pass of crossing according to claim 1 based on dynamic structure light measurement crosses fish amount automatic counter system, special
Sign is：Structured light light source is mounted in detecting unit above the photographed scene of underwater CCD camera.
3. the fish pass of crossing according to claim 1 based on dynamic structure light measurement crosses fish amount automatic counter system, special
Sign is：The light that structured light light source is sent out is laser.
4. a kind of fish pass of crossing based on dynamic structure light measurement crosses fish amount automatic counting method, which is characterized in that including walking as follows
Suddenly：
(1) video that fish swims across the variation of structure smooth surface hour wheel profile is taken using underwater CCD camera；
(2) video fractionation is carried out, same fish is divided into several pieces of contour lines different in size；
(3) average filter method is used to reduce picture noise, it is assumed that a width size is the original image X (a, b) of N*N, and M is to choose mould
The total number of all pixels corresponding to plate, Y (c, d) be by average filter treated image,
For (a, b) value range from 0,1,2 to N-1, s indicates the pixel region set for (a, b) with center in formula；
(4) picture obtained will be split and extract one every fixed number, carry out matching fusion treatment, if in fish pass water flowing
Direction is Y-axis, is X-axis perpendicular to the direction of flow and side wall, then effectively respectively moves mesh in counting region in the picture extracted
The geometric center of target contour line is respectively：
Q1(x1,y1)、Q2(x2,y2)、Q3(x3,y3)、、、Qn(xn,yn),
Subscript indicates picture sequence numbers, since contour line center is constant always in picture, i.e. x1=x2=x3=...=xn、y1=
y2=y3=...=yn,
So can remove x, all pictures can be fused to by the subscript of y：
Q1(x,y)+Q2(x,y)+Q3(x,y)+…+Qn(x, y)=Q1(x,y)+Q2(λx,y)+Q3(2λx,y)+…+Qn((n-1)λ
x,y)
Wherein λ is the average travelling speed of fish；
(5) judge the swimming direction of fish according to the direction in fish head portion, it is consistent with water (flow) direction for downbeam, with water (flow) direction
Opposite is countercurrent direction；
(6) the quantity n for all fishes that statistics occurs in entire count period1And the quantity n of the fish of countercurrent direction travelling2, then suitable
The quantity for flowing the fish in direction is n1-n2。
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Application publication date: 20181106 |