Terrain capture sand area with rocks

Hello, I have to capture with high detail a large area that contains rocks and saνd is near the sea.

What is the best method?

Combining orbit flights and grid flights with camera to be in 60 degrees?

For now I have a phantom 4 pro?

 May I need RTK version of phantom for best results?

Ι was thinking also to add a terrestrial laser scanner. 

I know that context capture has some problems aligning images when mixing orbit and grid flights sometimes.

Parents
  • How big is a 'large area'? What kind of resolution do you need? Are there lots of rocks, or is it mostly sand? If there are enough rocks to have some in each photo you'll be fine. I would start with a nadir double grid 'up high'. That might be 60 meters or so. Then I would come down 25% of the way to the ground and do oblique double grid with the gimbal at 70 degrees. Maybe do another run 25%  closer. Keep doing that until you get the ground sampling distance that you're looking for. 

    You definitely don't need RTK.

    ContexCapture can give you more resolution than a laser scanner if you have lots of pixels and you get close. 

    Context capture doesn't struggle with mixing orbits and grids, but it does struggle with changing your distance to the subject by more than 75% or so. 

Reply
  • How big is a 'large area'? What kind of resolution do you need? Are there lots of rocks, or is it mostly sand? If there are enough rocks to have some in each photo you'll be fine. I would start with a nadir double grid 'up high'. That might be 60 meters or so. Then I would come down 25% of the way to the ground and do oblique double grid with the gimbal at 70 degrees. Maybe do another run 25%  closer. Keep doing that until you get the ground sampling distance that you're looking for. 

    You definitely don't need RTK.

    ContexCapture can give you more resolution than a laser scanner if you have lots of pixels and you get close. 

    Context capture doesn't struggle with mixing orbits and grids, but it does struggle with changing your distance to the subject by more than 75% or so. 

Children