Micasense Rededge Dual Camera System for Drones

[@tofuComputer]

Thank you, Greg. Obviously a great camera. However, it seems no one ever gets into why and when a certain given band would be used. Perhaps those reading this might be interested in elaborating with some examples.

[@jjsulik]

Based on the graph at www.micasense.com/dual-camera-system , the new red-edge bands are similar to Sentinel-2A red-edge bands. I suggest searching Sentinel documentation for the motivation for each band, but each of the different red-edge bands may show something unique with respect to a particular stress and leaf orientation (I think I have read that longer wavelength bands (e.g. 730) are more appropriate for vertically-inclined canopies like wheat whereas 705 would be more suitable for flat leaves such as strawberries). The 650 band is simply a red that is less prone to saturate (i.e. slightly less chlorophyll absorption) so it should be slightly more sensitive to chlorophyll variation at high levels of chlorophyll content. It is kind of like a red-edge band but without the multiple scattering. The green band at 531 is popular for the photochemical reflectance index (PRI) but most folks aren't aware that you need to image at multiple times throughout a day to make that index work and I see PRI as more of a boutique index than something farmers would use. The coastal blue band is mostly geared toward mapping water turbidity or anything else you find Landsat 8 coastal blue is used for. If you use PCA or similar linear algebra techniques you may see value in having a 10-dimensional vs 5-dimensional data set.