Plant canopy image analyzer

Plant canopy image analyzerUsed for research on plant canopies of various heights, utilizing fisheye lenses andCCDThe image sensor obtains images of the plant canopy, and through analysis software, relevant indicators and parameters of the plant canopy are obtained. benefitUsing a fisheye lens to image and measure plant canopy data only requires one operation, simplifying the complex work of traditional measurement methods that require multiple measurements at fixed points per day. Moreover, using imaging methods to measure the canopy can actively avoid non compliant calculations The canopy gap portion of the layer structure parameters can also avoid obstacles that do not comply with measurement calculations.

Testing principles 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 adopts a semi theoretical approach under a series of assumptions defined for the plant canopy A semi empirical formula is used to calculate canopy structure parameters by measuring canopy porosity. This is the principle unanimously adopted by various canopy instruments around the world. Based on the above principle, the plant canopy image analyzer adopts the method of analyzing the subsurface of the canopy The method of analyzing and measuring canopy porosity using images of the celestial hemisphere is an accurate, labor-saving, time-saving, fast, and convenient approach among various methods.

Structural composition

Plant canopy image analyzerFish eye image capture probe (using a fisheye lens and...)CCDImage sensor composition), built-in25aPARSensor measuring rod (rocker arm), laptop, image acquisition software and image Analysis software and high-capacity rechargeable battery pack composition. The fisheye probe is installed at the top of a very light rocker arm, which can obtain150Fish eye image with a viewing angle of degrees. The display and storage of images are completed by the configured laptop computer.

Functional Features

1.Non destructive measurement of canopy structure

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

3.Handheld universal joint automatic horizontal adjustment probe

4.A portable laptop can help you select sampling points correctly and make real-time decisions on image selection

5.Powered by computer batteries, it is extremely lightweight and easy to observe, especially suitable for completing heavy field observation tasks

6. Image analysis software can freely define the image analysis area (zenith angle can be divided)10Zone, azimuth can be divided10District). When conducting regional analysis on canopy layers in different directions, it is possible to arbitrarily shield ground objects and unreasonable scenery The canopy part (such as missing plants, edge problems, 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

7.passUSBThe interface directly displays the measurement point image on the computer, allowing for real-time observation of the image in the field, selection of appropriate measurement points, and storage of the image.

8.The hemisphere image can be used to design the sun's visual motion trajectory at any location and time, as well as the light receiving conditions within the canopy at any time.

Technical parameters

1.Camera angle:150° (or user selected)180° Lens. Unless the user has special needs,180Fisheye lens

It is often not suitable for the assumptions of porosity measurement principles and methods, and is not suitable for canopy structure analysis

And uneconomical.

2.Resolution:768×494pix

3.Measurement range: zenith angle is determined by0°～75°（150The fisheye lens can be divided into ten regions with azimuth angles360It can also be divided into ten regions.

4．PARSensing range: sensing spectrum400～700nm. measurement range0～2700Mmol/m2•s

5.Analysis software: Professional plant canopy analysis system software.

6.Display and Memory:7Inch notebook,128Above memory.

7.electricity Source: Computer battery.

8.Probe size: diameter6cm, high10cm

9.Transmission interface:USB

10.Operating Temperature0～55℃

11.Weight:1.5kg