May 21, 2018 at 1:48 pm #2814
I would like to see some form of a gimble viewer. I have found that the program does not seem to get the gimble angle right for the building 3D modelling feature.
It seems too capture too much sky. I would expect that if you wanted to capture a building in the centre of a block, that the gimble should point to the centre of the house and the gimble angle should change according to altitude.
Maybe this need some work. In the meantime a gimble viewer (like in Drone Harmony) would be oresome and allow you to get the gimble angle right prior to flight.
May 21, 2018 at 11:37 pm #2834
We can look at adding an indicator for the gimbal angle. I am not familiar with Drone Harmony, but will take a look.
Which building mission are you referring to?
The mission called “Building” is not designed for 3D modelling, it’s for taking photos for real estate advertising. In that market, users generally require the house to be in the bottom 1/3 of the image and the surrounding area must be visible to give context. The app calculates the gimbal angle to place the house in the bottom 1/3 of the image. It’s based on the takeoff altitude, so if you take off at a location that is much higher or lower than the house, the gimbal angle may be wrong.
There is another mission called “structure scan”. It’s designed for taking lots of photos of of tall structures such as multi story buildings or towers. It flies a series of orbits around the object. It really works best for buildings > 20m tall. It calculates the gimbal angle based on how big you set the radius for the flight and the drones altitude. You can also set the initial down angle in the mission builder (defaults to 45 degrees). That’s used for the first orbit, which is flown above the building. After that it adjusts the angle based on altitude.
If you want to make a 3D model of something low, like a normal house, you may be better off using the Orbit mission. This flies a single orbit around the object, but you have full manual control over the gimbal so you can tweak it just right. You can also set it prior to taking off.
After the orbit mission, you could land then fly an “Area” mission over the top to get some top down photos. Combine all of those photos to create a 3D model with Pix4D or other software.
May 22, 2018 at 1:03 pm #2838
You must be logged in to reply to this topic.