Precision farming with thermal imaging and multispectral sensor
water stress and NDVI vegetation index with thermal and multispectral cameras
Thermal Camera Analysis : Water Stress , Irrigation Rate , Soil Temp , Water Source Detection, Plant Health.
Multispectral Camera Analysis : Plant Health Measurement , Chlorophyll a, b, Nitrogen, Vegetation Index( NDVI, NDRE, VARI, SCCI...)
Integrate thermal sensors, multispectral sensors and high resolution images into one sensor
2. RedEdge MX
DLS sensor and GPS integration, DJI SKYPORT makes attachment easier
The crop water stress index (CWSI) was developed (in 1981) as a normalized index to quantify stress and overcome the effects of other environmental parameters affecting the relationship between stress and plant temperature. Workswell’s WIRIS Agro is the first device of its kind designed to map water stress across large areas in the field of precision agriculture. The aim of this method and device is to determine the value of water stress in the plant stand. For example, this information may be used to determine yield maps, optimize irrigation, or control water management remedies. Camera offers LWIR band sensor and 10x optical zoom RGB camera with resolution full HD (1920 x 1080 px) for biomass cover index 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).
 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
 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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