NL2032571B1 - Auxiliary device for plant canopy image acquisition - Google Patents

Auxiliary device for plant canopy image acquisition Download PDF

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Publication number
NL2032571B1
NL2032571B1 NL2032571A NL2032571A NL2032571B1 NL 2032571 B1 NL2032571 B1 NL 2032571B1 NL 2032571 A NL2032571 A NL 2032571A NL 2032571 A NL2032571 A NL 2032571A NL 2032571 B1 NL2032571 B1 NL 2032571B1
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NL
Netherlands
Prior art keywords
auxiliary device
image acquisition
canopy
light
plant
Prior art date
Application number
NL2032571A
Other languages
Dutch (nl)
Inventor
Hu Hao
Hao Pengfei
Lin Baogang
Zhou Hongkui
Lou Weidong
Hua Shuijin
Original Assignee
Zhejiang Acad Agricultural Sci
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Priority to NL2032571A priority Critical patent/NL2032571B1/en
Application granted granted Critical
Publication of NL2032571B1 publication Critical patent/NL2032571B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/56—Accessories
    • G03B17/561—Support related camera accessories
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N2021/8466—Investigation of vegetal material, e.g. leaves, plants, fruits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The present invention discloses an auxiliary device for plant canopy image acquisition, comprising a light collecting cover, wherein one image acquisition hole is provided on a top of the light collecting cover, and a light source is provided inside the 5 light collecting cover. By adoptinq the auxiliary device, a digital camera can be placed on the auxiliary device, and plant canopy images can be acquired through the image acquisition hole, avoiding camera shake; the light source provided inside the auxiliary device can provide stable light irradiation, and can 10 conveniently measure the canopy information of the plant in different environments, and at the same time greatly reduce the cost, which has important application significance.

Description

P1487 /NLpd
AUXILIARY DEVICE FOR PLANT CANOPY IMAGE ACQUISITION
TECHNICAL FIELD
The present invention falls within the field of plant physio- logical function measuring instruments and specifically relates to an auxiliary device for plant canopy image acquisition.
BACKGROUND ART
The leaf surface status of a plant reflects a variety of in- formation such as crop appearance, health, disease, and so on. Us- ing graphic processing technology to quantitatively analyze the apparent information such as the shape, color, and texture of leaves can understand the growth status of the plant.
Among them, Photosynthetically active radiation (PAR) and leaf area index (LAI) are important indicators to evaluate plant health and plant canopy structure. PAR indicates how much light energy is available for plant photosynthesis. LAI can be used to estimate canopy density and biomass, which is an important parame- ter of plant canopy structure. These parameters are generally ob- tained by the method of plant canopy image acquisition.
At present, the plant canopy image acquisition method is gen- erally obtained by vertical shooting with a canopy image analyzer or a digital camera, followed by image segmentation. When the can- opy image analyzer is used to collect data, there are many meas- urement parameters and the measurement is accurate, but the price is expensive (about 100, 000 RMB), which is not suitable for com- mon organizations.
When the digital camera is used for image acquisition, the method is simple and easy to use, but there are obvious disad- vantages. The first is that when the plant canopy image is ac- quired, the camera is easy to shake, which may affect the acquired image and affect the accuracy of measurement; the second is that there may be differences in the light environments of different tests or plants at the time of image acquisition, which may also affect the acquired images and affect the accuracy of measurement.
Therefore, it is very important to develop an auxiliary device ca- pable of fixing an image acquisition device that can provide the same light environment.
SUMMARY
The present invention provides an auxiliary device for plant canopy image acquisition, and the use of the auxiliary device can improve the accuracy of measurement and reduce the cost.
An auxiliary device for plant canopy image acquisition, com- prising a light collecting cover, wherein one image acquisition hole is provided at a top of the light collecting cover, and a light source is provided inside the light collecting cover.
When a digital camera is used for image acquisition of a plant canopy, the digital camera is placed on the auxiliary de- vice, so that a lens of the camera protrudes from the image acqui- sition hole at the top of the light collecting cover. The shaking of the camera can be avoided due to the supporting function of the auxiliary device. At the same time, the auxiliary device is pro- vided with the light source therein, which can provide stable light irradiation without changing with different tests or light environments where plants are located, so that the accuracy of measurement can be improved. At the same time, using a common cam- era can achieve plant canopy image acquisition, greatly reducing costs.
Preferably, the light collecting cover consists of a cylin- drical enclosure plate and a lid at the top;
The image acquisition hole is provided on the lid, and the light collecting cover is provided in a cylindrical shape, which is conducive to the formation of a homogeneous light environment by the light emitted by the light source. The enclosure plate of the cylindrical structure is also easy to process.
Preferably, the light source is a lamp tube. When the lamp tube is used as the light source, the light source is inexpensive and stable.
In order to make the light emitted by the lamp tube evenly irradiate all parts of the light collecting cover and provide a homogeneous light environment for the plant canopy, preferably,
the lamp tube is a strip-shaped LED arranged on the inner wall of the enclosure plate. The strip-shaped LED lamp tube is perpendicu- lar to the lid. When using the LED lamp tube, the light efficiency is higher, the energy efficiency is higher, and the service life thereof is longer.
As a further preference, the enclosure plate is provided with an upper circular lamp tube at an upper edge therein and a lower circular lamp tube at a lower edge therein.
Preferably, the inner surface of the enclosure plate is re- flective. At this time, the reflective surface can play a role in converging light, so that the image captured by the camera is clearer, facilitating the analysis of data and making the obtained measurement result more accurate.
Preferably, the lid is provided with a level bulb at an upper surface, through which the lid can be maintained in a horizontal state, in turn, the camera placed thereon can be maintained in a vertical shooting state.
Preferably, the enclosure plate is provided with support feet at a bottom edge. The support feet primarily serve to support the whole device. As a further preference, there are four support feet.
Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By adapting the auxiliary device of the present inven- tion, the commen digital camera can be used to realize the image acquisition of plant canopy, reducing the cost; and (2) Using the auxiliary device of the present invention can provide a stable homogeneous light environment for the image ac- quisition of plant canopy, which will not change with the change of time and place, and improve the accuracy of measurement data.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic structural diagram of an auxiliary de- vice for plant canopy image acquisition of the present invention.
In the figure, 1: lid; 11: image acquisition hole; 12: level bulb; 2: enclosure plate; 21: strip-shaped LED lamp tube; 22: upper cir- cular lamp tube; 23: lower circular lamp tube; 24: reflective sheet; and 3: support foot.
DETAILED DESCRIPTION OF THE EMBODIMENTS
A canopy image acquisition device used in the present embodi- ment is a common digital camera, specifically a CANON SX120IS cam- era, which is capable of acquiring an image of an area of 60 cm x 60 cm with a lens extension diameter of 4.543 cm and a vertical height of 120 cm after it is powered on.
An auxiliary device for plant canopy image acquisition of the present invention is described in further detail below with refer- ence to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an auxiliary de- vice for plant canopy image acquisition of the present invention.
As shown in FIG. 1, the auxiliary device consists of a cylindrical enclosure plate 2 and a lid 1 at a top to form a skeleton struc- ture. The lid 1 is a circular plexiglass. The situation of plants in the device can be viewed through the lid 1 clearly. The diame- ter of the lid 1 is determined according to the canopy of the spe- cific plant to be measured.
The central part of the lid 1 is provided with an image ac- quisition hole 11. The image acquisition hole is circular, and the specific size thereof is suitable for the size of the extended lens of the CANON SX120IS camera. A level bulb 12 is also provided on the lid 1, through which the lid 1 can be maintained in a hori- zontal state, in turn, the CANON SX120IS camera placed thereon can be maintained in a vertical shooting state.
Lamp tubes are provided inside the auxiliary device. The lamp tubes can be an upper circular lamp tube 22 arranged inside the lower edge of the lid 1, strip-shaped lamp tubes evenly distribut- ed on the cylinder, or a lower circular lamp tube 23 arranged at a lower side inside the enclosure plate 2, wherein the upper circu- lar lamp tube 22, the strip-shaped lamp tubes and the lower circu- lar lamp tube 23 can all be arranged in the auxiliary device or can be only partially arranged. These lamp tubes are all LED lamp tubes. It is more efficient and energy efficient when LED lamp tubes are used, and the service life of LED lamp tubes is longer.
The lamp tubes are typically powered by batteries (not shown), in which case the auxiliary device can be used anywhere.
The inner surface of the enclosure plate 2 is reflective. A reflective sheet 24 can be pasted on the inner surface of the en- closure plate 2. The reflective sheet 24 can play a role in con- 5 verging light, so that the image captured by the camera is clear- er, facilitating the analysis of data and making the obtained measurement result more accurate.
Four support feet 3 are provided at a bottom edge of the en- closure plate 2. The support feet 3 mainly serve to support the whole apparatus. When the lower circular lamp tube 23 is provided, the support feet 3 can also prevent the lower circular lamp tube from being scratched or destroyed by the ground.
In use, the auxiliary device is covered on the canopy of the plant, and the light source of the device is turned on. Then the
CANON SX120IS camera is turned on with its lens directed at the image acquisition hole 11 for image acquisition.
The above-mentioned specific embodiments describe in detail the technical solutions and beneficial effects of the present in- vention. It should be understood that the above-mentioned embodi- ments are only the most preferred embodiments of the present in- vention, and are not intended to limit the present invention. Any modifications, additions, and equivalent substitutions made within the scope shall be included within the scope of the present inven- tion.

Claims (7)

© CONCLUSIES© CONCLUSIONS 1. Hulpinrichting voor het verkrijgen van afbeeldingen van het bladerdak, met het kenmerk, dat de inrichting een lichtverzamel- deksel omvat, waarbij één beeldacquisitiegat (11) is aangebracht aan een bovenzijde van het lichtverzameldeksel, en een lichtbron is aangebracht binnen het lichtverzameldeksel.An auxiliary device for acquiring images of the canopy, characterized in that the device comprises a light collection cover, one image acquisition hole (11) being provided on a top side of the light collection cover, and a light source arranged within the light collection cover. 2. Hulpinrichting voor het verkrijgen van afbeeldingen van het bladerdak volgens conclusie 1, met het kenmerk, dat het lichtop- vangdeksel bestaat uit een cilindrische omhullingsplaat (2) en een deksel (1) aan de bovenzijde; en het beeldacquisitiegat (11) is aangebracht op het deksel (1).An auxiliary canopy image acquisition device according to claim 1, characterized in that the light-collecting cover consists of a cylindrical envelope plate (2) and a top cover (1); and the image acquisition hole (11) is provided on the cover (1). 3. Hulpinrichting voor het verkrijgen van afbeeldingen van het bladerdak volgens conclusie 2, met het kenmerk, dat de lichtbron een lampbuis is.An auxiliary device for obtaining images of the canopy according to claim 2, characterized in that the light source is a lamp tube. 4. Hulpinrichting voor het verkrijgen van afbeeldingen van het bladerdak volgens conclusie 3, met het kenmerk, dat de lamp een op een binnenwand van de omhullingsplaat (2) aangebrachte strookvor- mige LED-lamp (21) is, waarbij de strookvormige LED-lamp buis (21) loodrecht staat op het deksel (1).An auxiliary device for obtaining images of the canopy according to claim 3, characterized in that the lamp is a strip-shaped LED lamp (21) arranged on an inner wall of the casing plate (2), wherein the strip-shaped LED lamp tube (21) is perpendicular to the cover (1). 5. Hulpinrichting voor het verkrijgen van afbeeldingen van het bladerdak volgens conclusie 2, met het kenmerk, dat het binnenop- pervlak van de omhullingsplaat (2) reflecterend is.Auxiliary device for obtaining images of the canopy according to claim 2, characterized in that the inner surface of the casing plate (2) is reflective. 6. Hulpinrichting voor het verkrijgen van afbeeldingen van het bladerdak volgens een van de conclusies 1 tot 5, met het kenmerk, dat op een bovenoppervlak van het deksel (1) een vlakke bol (12) is aangebracht.Auxiliary device for obtaining images of the canopy according to one of claims 1 to 5, characterized in that a flat sphere (12) is arranged on an upper surface of the cover (1). 7. Hulpinrichting voor het verkrijgen van afbeeldingen van het bladerdak volgens conclusie 6, met het kenmerk, dat aan een onder- ste rand van de omhullingsplaat (2) steunvoeten (3) zijn aange- bracht.Auxiliary device for obtaining images of the canopy according to claim 6, characterized in that supporting feet (3) are provided on a lower edge of the envelope plate (2).
NL2032571A 2022-07-21 2022-07-21 Auxiliary device for plant canopy image acquisition NL2032571B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2032571A NL2032571B1 (en) 2022-07-21 2022-07-21 Auxiliary device for plant canopy image acquisition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2032571A NL2032571B1 (en) 2022-07-21 2022-07-21 Auxiliary device for plant canopy image acquisition

Publications (1)

Publication Number Publication Date
NL2032571B1 true NL2032571B1 (en) 2024-01-29

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ID=89719226

Family Applications (1)

Application Number Title Priority Date Filing Date
NL2032571A NL2032571B1 (en) 2022-07-21 2022-07-21 Auxiliary device for plant canopy image acquisition

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