CN113932777A - Measuring device for vegetation side coverage - Google Patents
Measuring device for vegetation side coverage Download PDFInfo
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- CN113932777A CN113932777A CN202111264541.1A CN202111264541A CN113932777A CN 113932777 A CN113932777 A CN 113932777A CN 202111264541 A CN202111264541 A CN 202111264541A CN 113932777 A CN113932777 A CN 113932777A
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- camera
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- vegetation
- measuring device
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- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 241000196324 Embryophyta Species 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000004576 sand Substances 0.000 description 5
- 241000223025 Caragana microphylla Species 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000003066 decision tree Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/08—Trick photography
- G03B15/10—Trick photography using back-projection, i.e. blending artificial background with real foreground
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Studio Devices (AREA)
Abstract
The invention relates to a measuring device for vegetation side coverage, and belongs to the technical field of vegetation ecology monitoring. This measuring device of vegetation side coverage includes: camera support, the fixed horizontal pole of camera, two camera height adjustment supports, two hang background curtain supports, curtain and curtain support horizontal pole, the joint has the fixed horizontal pole of camera between two camera height adjustment supports, it is provided with camera support to slide on the fixed horizontal pole of camera, be equipped with the guiding mechanism who is used for adjusting the fixed horizontal pole of camera and is the horizontality on two camera height adjustment supports, two hang and rotate between the background curtain support and connect the curtain support horizontal pole, the curtain supports the fixed curtain that is equipped with on the horizontal pole, camera height adjustment support and hang and be provided with the vegetation that is used for measuring the side cap degree between the background curtain support. Has the advantages that: the method can provide a reference object for the picture, is convenient for calculating the projection length of the plant height and the branch length and extracting and calculating the coverage, and can quickly and accurately measure the vegetation side coverage.
Description
Technical Field
The invention belongs to the technical field of vegetation ecology monitoring, and particularly relates to a measuring device for vegetation side coverage.
Background
The coverage is a key vegetation parameter and a quantitative index which are often required to be measured in ecology, and has important significance for evaluating the vegetation health condition, the productivity, the wind prevention and sand fixation, the water and soil conservation capability and the like. However, most of the current vegetation surveys mainly use visual estimation, have extremely high requirements on the experiences of the investigators, and have great subjectivity and contingency, and the difference between the estimates of different investigators and even the same investigator in different periods can be as much as several times.
To address the uncertainty and subjectivity in vegetation coverage estimation, many researchers have proposed using photographic or remote sensing techniques to measure vegetation coverage. The method for shooting and extracting by using the digital camera is widely applied due to the advantages of high efficiency, accuracy, economy and the like. For example, applicants have used digital cameras to extract turf and desert vegetation coverage. The extraction method mainly comprises supervision and classification, an RGB threshold segmentation method, a classification decision tree method and the like. However, the coverage of vegetation extracted based on digital photos is mainly vertical shooting, and only the vertical projection coverage of vegetation can be obtained, and the side coverage is particularly important for the aspects of wind prevention and sand fixation of vegetation, water and soil conservation, sand transportation amount calculation and the like. For example, the caragana microphylla or sand barriers planted in rows have great difference in wind-proof function when the caragana microphylla or sand barriers are perpendicular to the wind speed direction and parallel to the wind speed direction. In addition, vertical photography also has large errors in estimating vegetation height.
Therefore, a measuring device for vegetation side coverage is provided to solve the defects of the prior art.
Disclosure of Invention
The invention provides a measuring device for vegetation side coverage, which aims to solve the technical problems, can provide a reference object for a picture, is convenient for calculating the projection length of the plant height and the branch length and extracting and calculating the coverage, and can quickly and accurately measure the vegetation side coverage.
The technical scheme for solving the technical problems is as follows: this measuring device of vegetation side coverage includes: camera support, the fixed horizontal pole of camera, two camera height adjustment supports, two hang background curtain support, curtain and curtain support horizontal pole, two the joint has between the camera height adjustment support the fixed horizontal pole of camera, the fixed horizontal pole of camera is gone up to slide and is provided with the camera support, two be equipped with on the camera height adjustment support and be used for the adjustment the fixed horizontal pole of camera is horizontality's guiding mechanism, two it connects to hang to rotate between the background curtain support the curtain supports the horizontal pole, the curtain supports and is fixed being equipped with on the horizontal pole the curtain, camera height adjustment support with hang and be provided with the vegetation that is used for measuring the side cap degree between the background curtain support.
Has the advantages that: the method can provide a reference object for the picture, is convenient for calculating the projection length of the plant height and the branch length and extracting and calculating the coverage, and can quickly and accurately measure the vegetation side coverage.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the adjusting mechanism is a hose, and water is injected into the hose.
The beneficial effect of adopting the further scheme is that: simple structure utilizes the linker principle, adjusts the height of both sides camera altitude mixture control support, transfers the fixed horizontal pole of camera to the level.
Furthermore, the hose is made of PVC.
The beneficial effect of adopting the further scheme is that: light weight, good waterproof performance and convenient use.
Furthermore, scales are arranged on the camera fixing cross rod.
The beneficial effect of adopting the further scheme is that: the shooting position of the camera is convenient to determine, and the measurement precision is improved.
Furthermore, the curtain is made of an inkjet printing cloth material.
The beneficial effect of adopting the further scheme is that: the reflecting intensity is high, and the projection effect is good.
Further, the camera height adjusting support and the hanging background curtain support are telescopic frames.
The beneficial effect of adopting the further scheme is that: the shooting height of the camera is convenient to adjust, and the camera fixing cross rod is kept horizontal.
Further, the camera fixing cross rod is formed by splicing a plurality of supporting rods.
The beneficial effect of adopting the further scheme is that: the length of the cross rod can be adjusted at will according to needs, and the portable and convenient assembling and disassembling can be realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the calculation of plant shoot length (height) on a camera photograph;
in the drawings, the components represented by the respective reference numerals are listed below:
1. a camera support; 2. a camera fixed crossbar; 3. a camera locking sleeve; 4. a camera height adjustment bracket; 5. a hose; 6. hanging a background curtain bracket; 7. curtain locking sleeves; 8. a curtain; 9. a curtain support rail; 10. vegetation; 11. and (4) vegetation projection.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Examples
As shown in fig. 1, the present embodiment provides a vegetation side coverage measuring device, including: camera support 1, the fixed horizontal pole 2 of camera, two camera height adjustment supports 4, two hang background curtain support 6, curtain 8 and curtain support horizontal pole 9, two the joint has between the camera height adjustment support 4 the fixed horizontal pole 2 of camera, be provided with the scale on the fixed horizontal pole 2 of camera. The both ends of the fixed horizontal pole 2 of concrete camera are provided with the fixture block, and the side of camera height adjustment support 4 is provided with the correspondence along vertical direction the draw-in groove of fixture block, it is provided with to slide on the fixed horizontal pole of camera 2 camera support 1, the fixed camera of camera support 1, two be equipped with on the camera height adjustment support 4 and be used for the adjustment the fixed horizontal pole of camera 2 is horizontality's guiding mechanism, and guiding mechanism specifically is hose 5, it has water to annotate in the hose 5, the material of hose 5 is the PVC material. Two it connects to hang to rotate between the background curtain support 6 the curtain supports horizontal pole 9, the curtain supports and is fixed being equipped with on the horizontal pole 9 the curtain 8, the material of curtain 8 is the air brushing material. A vegetation 10 used for measuring the side coverage degree is arranged between the camera height adjusting support 4 and the hanging background curtain support 6.
It should be noted that the camera height adjusting bracket 4 and the suspended background curtain bracket 6 are both telescopic brackets, specifically, the camera height adjusting bracket 4 is a first loop bar and a second loop bar, the top of the first loop bar is fixedly provided with a camera locking sleeve 3, the second loop bar is sleeved in the camera locking sleeve 3, and the side walls of the second loop bar and the camera locking sleeve 3 are both provided with a plurality of locking holes at intervals and are locked by locking screws; hang background curtain support 6 and be third loop bar and fourth loop bar, the fixed curtain lock sleeve 7 that is provided with in top of third loop bar, and the fourth loop bar cover is established in curtain lock sleeve 7, and the equal interval of lateral wall of fourth loop bar and curtain lock sleeve 7 is provided with a plurality of locking holes, locks through locking screw.
Specifically, state camera fixed cross pole 2 and form for many spinal branchs pole concatenation, can be according to the area of vegetation 10, the length of the fixed cross pole 2 of corresponding adjustment camera, the material of specific branch is the aluminum alloy material, every 1 meter, can freely splice length as required, every 10 centimetres scale on the pole.
The measuring method comprises the following steps: as shown in fig. 2, the main wind direction is determined, the backdrop 8 is aligned to the main wind direction, coordinates are set in the region of the region to be measured, and an orthoscopic image is photographed by the unmanned aerial vehicle. Before photographing, firstly injecting water into the hose 5, adjusting the heights of the camera height adjusting brackets 4 at two sides by utilizing the principle of a communicating vessel, adjusting the camera fixing cross bar 2 to be horizontal, and keeping the height of the camera fixing cross bar 2 on the center point of the vegetation 10 as much as possible so as to reduce the deviation of the photos; fixing a digital camera on a camera support 1, horizontally sliding and taking a picture, ensuring that the overlapping rate of two pictures is more than 75%, splicing the taken pictures by using Photoshop, extracting vegetation information, projecting the vegetation information to a background curtain 8 by using the length and width information of plants on the pictures to form a vegetation projection 11, and expressing the actual length of a target plant on the pictures by h 1; f represents a lens focal length; d1 represents the distance from the plant to the lens (which can be determined by aerial photography with a drone), d2 represents the distance from the lens to the backdrop; h1 denotes the height or length of the corresponding plant (or shoot), H2 denotes the height of the backdrop, when the side coverage:
C＝H1/H2＝(d1×h1)/(d2×h2)。
the extraction of Vegetation 10 can be done automatically using software, and can be done with reference to the vdvi (creation Difference lndex) index.
In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a measuring device of vegetation side coverage which characterized in that includes:
a camera bracket (1), a camera fixing cross rod (2), two camera height adjusting brackets (4), two hanging background curtain brackets (6), a curtain (8) and a curtain supporting cross rod (9), wherein the camera fixing cross rod (2) is clamped between the two camera height adjusting brackets (4), the camera fixing cross bar (2) is provided with the camera supports (1) in a sliding way, the two camera height adjusting supports (4) are provided with adjusting mechanisms for adjusting the camera fixing cross bar (2) to be in a horizontal state, the two hanging background curtain supports (6) are connected with the curtain supporting cross bar (9) in a rotating way, the curtain supports fixedly on horizontal pole (9) and is equipped with curtain (8), camera height adjustment support (4) with hang and be provided with vegetation (1O) that are used for measuring the side cover degree between background curtain support (6).
2. A vegetation side coverage measuring device as claimed in claim 1, wherein said adjusting means is a hose (5), said hose (5) being filled with water.
3. A vegetation side coverage measuring device as claimed in claim 2, wherein said hose (5) is of PVC.
4. A vegetation side coverage measuring device as claimed in claim 1, wherein the camera fixing rail (2) is provided with graduations.
5. A vegetation lateral coverage measuring device as claimed in any one of claims 1 to 4, wherein the curtain (8) is of a spray-painted cloth material.
6. A vegetation side coverage measuring device as claimed in any one of claims 1 to 4, wherein said camera height adjustment bracket (4) and said suspended backdrop bracket (6) are both telescopic brackets.
7. A vegetation side coverage measuring device as claimed in any one of claims 1 to 4, wherein said camera fixing rail (2) is formed by splicing a plurality of struts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111264541.1A CN113932777A (en) | 2021-10-28 | 2021-10-28 | Measuring device for vegetation side coverage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111264541.1A CN113932777A (en) | 2021-10-28 | 2021-10-28 | Measuring device for vegetation side coverage |
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| Publication Number | Publication Date |
|---|---|
| CN113932777A true CN113932777A (en) | 2022-01-14 |
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| CN202111264541.1A Pending CN113932777A (en) | 2021-10-28 | 2021-10-28 | Measuring device for vegetation side coverage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379940A (en) * | 2023-04-11 | 2023-07-04 | 水利部牧区水利科学研究所 | Automatic grass-filling plant height measuring device |
-
2021
- 2021-10-28 CN CN202111264541.1A patent/CN113932777A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379940A (en) * | 2023-04-11 | 2023-07-04 | 水利部牧区水利科学研究所 | Automatic grass-filling plant height measuring device |
| CN116379940B (en) * | 2023-04-11 | 2024-02-02 | 水利部牧区水利科学研究所 | Automatic grass-filling plant height measuring device |
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