Lecture 12 - Digital Characterization Flashcards
1
Q
types of sensors
A
RGB cameras
multispectral cameras
hyperspectral camera
temperature (IR)
2
Q
why do we perceive plants to be green
A
leaves absorb blue and red but reflect small amounts of green
3
Q
normalized difference vegetative index
A
how much visible light is being absorbed relative to how much biomass there is there
4
Q
how might we use NDVI
A
- separate out plants from surroundings (green vs. not green)
- how green it is (disease and stress)
- area covered by vegetation/volume
- growth rate (change over time)
5
Q
benefits to using digital phenotyping
A
higher selection accuracy
selection intensity (can have bigger screening nurseries)
6
Q
ways to calculate height from UAVs
A
DEM - digital elevation model
DSM - digital surface model
7
Q
is disease scoring through digital imaging direct or indirect
A
indirect (not directly looking at disease, looking at potential symptoms)
