Surveying Mountain area with Phantom 4 Pro

Hello!

Could you please tell me how to make 3D model of the mountain (standing at the bottom) fully? I mean also to include mountain SIDE details (if looking from drone perspective view, trees cover side of the mountain), do I need to set to manual mode and take photos of the side? If so, how to do it, what interval, height and camera angel?

Please have a look at attached photos, where i demonstrate the example of "lost data" when i take photos only from above and try to make 3D model of the terrain. Here Mountain side view isnt visible to drone from above, because of the hovering trees above terrain.

Sometimes I need to make 3D model of very Narrow corridor of the river. Please have a look at these photos, How is it possible to do 3D model of this corridor? Currently I am working with Hydro Power Plant developing company in Georgia and they asked me to Make 3D model of river corridor (For Intake), but I do not know how its possible with such a narrow area. This is my main goal.

Making Oblique photos is no problem... But it doesn't cover most of the part because of trees.

I dont need to MAP THE WATER, i want to create 3D model AROUND THE WATER (ROCKS and GROUND). As you can see from those photos, water occupies very small area, majority are rocks and ground.

Any ideas how to achieve it? I have Phantom 4 Pro.

Parents
  • Agreed, the best solution is a combination of nadir and oblique Point of Interest photos, especially in a densely forested area, the POI photos have a better chance of picking up detail under the foliage. Your photos need to contain as much terrain as possible. CC Editor has functionality for extracting terrain from your 3mx model, but if the tree cover is too dense, then I can't see how the mesh can model anything other than the canopy.

    Another advantage of taking POI photos in combination with nadir is that you should be able to fly at a lower altitude, thereby improving the precision of the mesh.

    It looks like part of your site includes steep valley walls. You may have problems finding satellites while trying to fly missions with the Phantom 4 Pro if you take off from the bottom of a narrow bottomed/high walled valley. The automated flight apps need GPS. You might find that GPS is available once the drone is in the air. Then you can use POI app in lieu of taking nadir shots, but if you have no nadir canopy to accompany the POI shots, be sure to overlap the circle patterns of your Point of Interests to make it easier for Aerotriangulation to succeed.

    The water in the photos you posted is insignificant and will not affect CC processing. CC struggles with stitching photos containing bodies of water/reflective surfaces/areas with little geometry.

Reply
  • Agreed, the best solution is a combination of nadir and oblique Point of Interest photos, especially in a densely forested area, the POI photos have a better chance of picking up detail under the foliage. Your photos need to contain as much terrain as possible. CC Editor has functionality for extracting terrain from your 3mx model, but if the tree cover is too dense, then I can't see how the mesh can model anything other than the canopy.

    Another advantage of taking POI photos in combination with nadir is that you should be able to fly at a lower altitude, thereby improving the precision of the mesh.

    It looks like part of your site includes steep valley walls. You may have problems finding satellites while trying to fly missions with the Phantom 4 Pro if you take off from the bottom of a narrow bottomed/high walled valley. The automated flight apps need GPS. You might find that GPS is available once the drone is in the air. Then you can use POI app in lieu of taking nadir shots, but if you have no nadir canopy to accompany the POI shots, be sure to overlap the circle patterns of your Point of Interests to make it easier for Aerotriangulation to succeed.

    The water in the photos you posted is insignificant and will not affect CC processing. CC struggles with stitching photos containing bodies of water/reflective surfaces/areas with little geometry.

Children
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