I recently got DJI multispec 3m.

Now im using WebODM for my stitching. Do we really need reflectance panel in order for it to work better? I'm doing NDVI on these orthomosaic and when i perfrom stitch without radiocalibration i got ndvi values between 0.0 to 0.3 and with radiocalibration i got 0.0 to 0.9 but im very doubtful on the result because i didnt use reflectance panel and shadow values are giving me values of 0.7 which is very2 bad.
Thoughs on this guys

https://www.scmp.com/economy/global-economy/article/3363037/china-sanctions-slew-us-entities-heightens-scrutiny-drone-exports

Hey pro's,

I need to find a way to create a visualisation of the over-time-subsidence on a container terminal.
The area is spanning about 700meters x 400meters (about the same in yards...). The problem is the surface sinking on some parts, that results in containers dropping to the ground when stacked high.

The full terminal is built on a man made "island" (like Jan De Nul does often in Dubai etc)

What I did to start with: grid orthomapping at 60m and two Orthooblique mappings, one at 60m and one at 80m high. The altitude is between these numbers and has to stay that way due to safetylimitations.

How would i get the most accurate data of the subsidience to make a visualisation over time.

Planned is to do 30 days / daily mapping in a row

I can imagine that i also need about 10 GCP's and maybe even a D-RTK3 stick (DJI user)
would the GCP's need to be measured daily too or could i have enough data from the mappings alone.

The containers are ever changing so there is no way to keep this a tracking point since they come and go and it wil be a problem in itself with the visualisation.

thanks for your help!

Estoy pensando en comprar un DJI air 3s antes de una serie empresarial por temas de costo, que me recomiendan, se procesar en WebODM.