Precision Agriculture
Precision farming with thermal imaging and multispectral sensor
water stress and NDVI vegetation index with thermal and multispectral cameras
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Thermal Camera Analysis : Water Stress , Irrigation Rate , Soil Temp , Water Source Detection, Plant Health.
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Multispectral Camera Analysis : Plant Health Measurement , Chlorophyll a, b, Nitrogen, Vegetation Index( NDVI, NDRE, VARI, SCCI...)
1. Altum-PT
Integrate thermal sensors, multispectral sensors and high resolution images into one sensor
2. RedEdge-P
DLS sensor and GPS integration, DJI SKYPORT makes attachment easier
3. RedEdge MX-DUAL
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Better Identification of Water
RGB Composite
False-color RGB
Band : 740-18 + 705-10 + 475-20, Image classification
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Basic Knowledge
4. WIRIS Agro - Precision Agricultural Water Stress Index Camera
WORKSWELL WIRIS Agro
Workswell’s WIRIS Agro R is the first device of its kind. Designed to map water stress across large areas, it has a critical role to play in the field of precision agriculture. The device facilitates the determination of the water stress value in a given stand of plants. This information may then be used to determine yield maps, optimize irrigation, and control water management remedies. In addition, the camera offers an LWIR band sensor with radiometric measurement and 10x optical zoom RGB camera with full HD (1920 x 1080 px) resolution for biomass cover index evaluation.
Real-time evaluation
With WIRIS Agro you get actual values of crop water stress during the flight or you can use the collected data to create an overview map. By comparing yields from different months and years depending on water stress, a potential yield map can be created according to the current water stress value.
WIRIS Agro offers four different colourmaps. From the point of view of data and their processing it is not important which one of the colourmap you choose. In the application point of view a suitable palette choice can be very helpful.
Each colourmap in the WIRIS Agro camera is always defined in this way: the palette is black and white away from the value 0 (negative values below the range) and away from the value 100% (values above the range).
Sources
[1] Jackson, R.D., S.B. Idso, R.J. Reginato, and P.J. Pinter Jr. 1981. Canopy temperature as a crop water stress indicator. Water Resources Research 17:1133
[2] Plant stress mesurement – en.wikipedia.org/wiki/Plant_stress_measurement
Main applications of WIRIS Agro
Although there are many uses, we can divide the main WIRIS Agro usage into these four applications:
✅ Water status monitoring – To monitor water stress, ie. the lack of water that the crop is exposed to during the growing season. And regardless of whether the crops are irrigated or not. Special colour map “Crop” and “CropStep” are available.
✅ Manage irrigation management – Irrigation system optimization both in terms of determining suitable locations for the location of soil sensors and in terms of structure optimization. Special colour map “Water” and “WaterStep” for that application are available.
✅ Phenotyping – Different plant varieties are susceptible to the amount of water available. The WIRIS Agro will help you determine how often the plants of a given species are in water stress, compared to plants of other species.
✅ Biomass Cover Index – For realtime calculation of plant percentage on the field.
Desktop Analysing Software CorePlayer for evaluation CWSI data
CWSI analysing software CorePlayer is a desktop software used for processing, analysing and exporting of CWSI RAW data images and videos. It allows to a user sets different parameters and models that are necessary for correct calculation of CWSI index or for later processing if the input data set to the camera needs to be adjusted.
For data processing to 2D or 3D vizualization can be also used the most common used SW tools such a Pix4D and Agisoft. Each image or video frame includes GPS information for processing.
The software is supplied free of charge to the WIRIS Agro.
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Color Map Overview
The WIRIS Agro R offers four different color maps. In terms of data processing, it is not important which map you choose, but from the application perspective, a suitable palette choice can be very helpful.
Each color map in the WIRIS Agro R camera is defined as follows: the palette is black and white as you move away from the 0 value (negative values below the range), and away from the 100% value (values above the range).
Biomass Cover Index
The BCI (Biomass Cover Index) concerns the evaluation of the vegetation mass within the RGB scene. Surfaces containing green vegetation are evaluated using data from an RGB camera, and the percentage of these areas is compared to other (non-vegetated) areas that are masked by a white color in the RGB image. The BCI is adjustable via simple thresholding by the user.
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