What We Can Assist You With:
- Plant Health Assessment
- Plant Chlorophyll Analysis
- Pre and Post Harvest Planning
- Drainage, Irrigation, and Water Mapping
- Variable Rate Mapping – Fertiliser, Water, and Ag-Chem
- Plant and Tree Counts
- Environmental Management
- Site Specific Management
- Farm Mapping and GIS
What Is Multi-Spectral Imagery?
The colours the human eye sees in light are defined by the wavelength of that light, but plants and trees absorb and reflect light differently depending on this wavelength. Plants typically absorb blue light and red light, while reflecting some green light. They also reflect a much larger amount of near-infrared (NIR) light, which is not visible to the human eye, but is visible to multi-spectral cameras like the Mica Sense RedEdge. By measuring the reflectance of a plant at different wavelengths, multi-spectral imaging enables identification to areas of stress in plants, and provides a quantitative metric for the vigor of a plant.
How Do Multi-Spectral Cameras Work?
Multi-spectral cameras work by imaging different wavelengths of light. Professional multi-spectral cameras like our Mica Sense Red Edge have multiple imagery, each with a special optical filter that allows only a precise set of light wavelengths to be captured by that imagery. The output of the camera is a set of images for that particular wavelength. These sets of images are then stitched together to create geographically accurate mosaics, with multiple layers for each wavelength. Mathematically combining these layers, we can create numerous indices or layers as shown in an output data format on a map – more specifically all related to plant health, and water retention. As shown in the first image below, the areas of red indicate areas where plants are stressed. We provide consultancy as to what the causes may be for the stress by conducting ground truthing assessment and methods to remedy the problem.
