Miniature Digital Plant Canopy Imager (CI-120)
Now you can collect plant canopy data from smaller plants and crops with our miniature canopy imager with integrated ceptometer. The CI-120 uses digital image analysis to calculate Leaf Area Index (LAI) and an integrated ceptometer to capture Photosynthetic Active Radiation (PAR). The CI-120's digital platform allows you to calculate PAR and LAI from a single canopy scan. No need to take multiple scans from above and below the canopy. One measurement provides a full complement of data,unlike systems which require multiple measurements and various masking devices to obtain meaningful data.
- Instant Data: Calculates plant canopy Leaf Area Index and Photosynthetic Active Radiation
- Onsite Evaluation: The CI-120 digital process needs only one scan beneath the canopy, allowing on-site evaluation under any daylight conditions
- User-Defined: User-selected number of zenith divisions (rings) and azimuthal divisions allows investigation of any canopy sectors desired
- Lightweight: 0.5 Kg instrument is handheld and simple to use
Lightweight (290 grams) and fast, the CI-120 simplifies data collection for crop science and environmental research.
- Single Measurement for LAI and PAR
- Ideal for Environmental, Agricultural and Crop Science Applications
- Collect data under any lighting conditions. The CI-110 accommodates for changes in ambient light
- 150° wide viewing angle
- User selected azimuthal and zenith divisions
- On-site gap fraction analysis
- Calculation of diffuse radiation transmission coefficients
- Calculation of mean foliage inclination
- Calculation of canopy extinction coefficients
- On image plotting of sun paths
- Non-destructive LAI and PAR measurement
- Integrated miniature CCD and Ceptometer to measure sun flecks in the range of PAR
- Ideal for measuring low lying crops and grasses
- Features
- Theory Of Operation
- Specifications
- How To Use It
- What's In The Box
The CI-120 Digital Plant Canopy Imager consists of an image-capturing probe and arm with 24 PAR sensors, built-in USB interface, for an optional laptop or palmtop computer, and software. To calculate PAR and LAI, the CI-120 captures a 150° fisheye image of the canopy, which can be divided into any number of zenith and azimuthal divisions desired. In this way, you may focus on all or any part of the canopy for study. The software digitizes and manipulates the captured images, then calculates the solar beam transmission coefficients, or the fraction of the sky visible from beneath the plant canopy. A value between 0 and 1 is assigned; with 0 meaning no sky is visible below the plant canopy, and 1 meaning that the entire area is sky or no foliage coverage. A fraction indicates partial foliage cover.
Figure: Grids for analyzing fish-eye images.
The Gap-Fraction Inversion Procedure is used to calculate:
- Leaf Area Index of the canopy
- Diffuse radiation transmission coefficients
- Mean foliage inclination angles
- Plant canopy extinction coefficients
The output data is then displayed on the computer screen and can be saved in a file. The CI-120 software first divides the image into sectors according to user-defined number of zenith division (rings) and azimuthal divisions. Then, the fraction of sky (solar beam transmission coefficient) visible in each sector is automatically analyzed by tallying the sky portion of the image pixels in that sector. After all the sectors have been analyzed and the average solar beam transmission coefficients for each zenith division are computed, the hemispherical diffuse radiation transmission coefficient (the sky view factor), mean foliage inclination angles, and plant canopy extinction coefficients are computed by CI-120's plant canopy analysis software.
*Norman J.M. and Campbell, G.S. (1989) Canopy Structure. In: Plant Physiological Ecology, Field methods and instrumentation. (eds. R. W. Pearcy, . Ehleringer, H.A. Moorney and P.W. Rundel), Chapman & Hall, London and New York, pp. 301-325.
- Features
- Theory Of Operation
- Specifications
- How To Use It
- What's In The Box
- Lens: PENTAX Lens
- Image Resolution: 768 × 494 pixels
- Interface: USB
- Measuring Time: 0.5 second
- Fish-eye Lens Angle: 150°
- Operating Temperature: 5 to 50°C
- Probe Size: 20 × 20mm
- Arm Length: 400mm
- Probe and Arm Weight: 0.5kg
- PAR: 24 PAR sensors
Specifications are subject to change without notice.
- Features
- Theory Of Operation
- Specifications
- How To Use It
- What's In The Box
Simply position the CI-120 in or under the desired canopy. The fisheye camera lens (150°) displays a live image of the canopy for accurate data collection. Once you have captured the desired image, software-driven analysis manipulates any data portion you desire, making manual image masking obsolete. Constructed with an integrated CCD image capture device and ceptometer equipped with 24 photodiodes, the CI-120 is ideal for measuring a wide variety of smaller plant canopies from plants and grasses to crops.
Calculations Performed:
- Leaf Area Index (LAI)
- Mean Foliage Inclination
- Sunflecks - The fraction of visible sky from below the canopy
- Photosynthetically Active Radiation (PAR)
- Features
- Theory Of Operation
- Specifications
- How To Use It
- What's In The Box
- Digital fish-eye imaging probe
- Driver software
- 24 PAR sensor-arm with USB interface
- Operation software
- Optional handheld computer
- Operations Manual
- Hard-shell instrument carrying case
