Plant canopy image analyzerbrief introduction:

Plant canopy image analyzerUsed for research on plant canopies of various heights, utilizing fisheye lenses andCCDImage sensors capture plant canopy images and obtain relevant indicators and parameters of the plant canopy through specialized analysis software. By using fisheye lens imaging to measure plant canopy data, only one operation is required, simplifying the complex work of traditional measurement methods that require multiple measurements at fixed points per day. Moreover, using image method to measure canopy can actively avoid canopy gaps that do not comply with the calculated canopy structure parameters, as well as obstacles that do not comply with measurement calculations.

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Measurement parameters

Leaf area index

Average inclination angle of blades

Scattering radiation transmittance

Transmittance of Direct Radiation at Different Solar Altitudes

Extinction coefficient at different solar altitude angles

Directional distribution of leaf area density

Plant canopy image analyzerPurpose and Scope of Application:

Can measure the direct sunlight transmission through the plant canopy

Rate, sky scattered light transmittance, canopy extinction

Coefficient, leaf area index, and average leaf inclination angle, etc

Can be used for crops, fruit trees, and canopy damage in forests

Measurement and analysis of light conditions

Can be used for comparing the structures of different plant populations

Can dynamically monitor the growth process of crop populations in farmland

monitor

Research and Teaching on Dynamic Monitoring of Ecological Field Plant Communities

Suitable for cultivation and breeding in the fields of agriculture, horticulture, and forestry Research and Teaching on Plant Population Comparison and Development

Plant canopy image analyzerprinciples and methods：

The plant canopy image analyzer adopts the principle of correlation between canopy porosity and canopy structure. It is based on the Beer's law of attenuation of light passing through a medium, and defines a series of assumptions for the plant canopy. Using a semi theoretical and semi empirical formula, the canopy structure parameters are calculated by measuring the canopy porosity. This is the principle currently used by various canopy instruments around the world. Under the above principle, The plant canopy image analyzer adopts the method of analyzing and measuring the canopy porosity of the hemisphere image under the canopy, which is the most accurate, labor-saving, time-saving, fast and convenient method among various methods.

Plant canopy image analyzerStructural features:

A small fisheye camera lens specially designed for measuring plant canopy structure is installed on a universal balance joint and can automatically maintain stability

Hold the camera in a horizontal position

The lens is installed at one end of the measuring rod, which can easily extend horizontally or vertically into the dense canopy

The communication line at the end can be connected to the computer for convenient image retrieval operations

Due to its small size and the presence of measuring rods, it can be extended into different heights of the canopy to quickly conduct layered measurements and measure the light within the group

Vertical distribution map of transmittance and leaf area index

The measuring rod is equipped with a linear PAR probe, which can also measure the photon flux density inside and outside the canopy(μmol/㎡•S)

Value, which can be used as a reference value for energy analysis within the canopy

Functional Features

Non destructive measurement of canopy structure

Can measure photosynthetically active radiation inside and outside the canopy(PAR)

Handheld universal joint automatic horizontal adjustment probe, no need for tripod

The use of the instrument is not affected by cloudy or windy conditions

Carrying a laptop with you can help you select the right points to use

Sample, instantly decide the choice of image

Powered by an external lithium battery pack for easy observation and long-term measurement, especially

Suitable for completing heavy field observation tasks

Image analysis software can define image analysis areas arbitrarily(Zenith angle can be divided

10Zone, azimuth can be divided10distinguish)Yes, that's right

When conducting regional analysis on canopy layers in different directions, it is possible to shield ground objects arbitrarily

Scenes and unreasonable canopy parts(Like missing plants and edges

Possible issues, etc)The selection of starting and ending angles for different zenith angles can avoid canopy pore conditions that do not comply with the calculation of the canopy structure parameters. By manually adjusting the threshold, the leaf area index can be measured more accurately

Number and other parameters

Camera angle:150°(Or user selected180° Lens. Unless the user has special needs,180Fish eye lenses often don't It is not suitable and economical to use the assumed prerequisites for porosity measurement principles and methods for canopy structure analysis)

resolving power:768×494pix

Measurement range: zenith angle is determined by0°～75°(150Fish eye lens)Can be divided into ten regions with azimuth angles360° can also be divided into ten regions

PARSensing range: sensing spectrum400nm～

700nm

measuring range0～2000μmol/㎡•S

Analysis software: Plant canopy analysis system

Display and memory: depending on the choice of laptop

Choose. electric Source: Lithium battery pack

Transmission interface:USB

Working temperature:0～55℃

adoptUSBThe interface directly displays the measurement point image on the computer

You can observe images in real-time in the wild and select appropriate measurement points,

And store the image on the computer