3D models are a great way to visualize the 3 dimensionalities of your object of interest. 3D models will automatically be processed when you upload your image set to DroneDeploy
Below is a guide describing the best practice to capturing oblique imagery during flight and uploading oblique imagery to DroneDeploy.com, as well as an example 3D model.
Flying with DroneDeploy Enhanced 3D
Enhanced 3D will combine parameter 3D with Crosshatch mode for optimal 3D capture. This feature is only supported for drones created after the Phantom 4. Any drone before the Phantom 4 will be incompatible with enhanced 3D mode. Please take a look at our list of Supported Drones to learn more about the compatibility of your drone and DroneDeploy flight app.
Parameter 3D Mode captures oblique images from the perimeter of your mission plan, facing towards the center of your subject and being careful not to include the horizon in the shots. But, in order to obtain even more obliques over your subject, you may want to add crosshatch mode. This should typically be done when one wants a good 3D model of an entire area or block as opposed to a single structure. For a single structure, nadir images taken from the top with just perimeter 3D are ideal.
When flying Perimeter 3D mode the drone will take images at 65 degrees down, looking towards the centroid of the map area. When Enhanced 3D mode is turned on, Perimeter 3D mode and Crosshatch mode are combined to create the type of flight template displayed below.
Best Practice to Capture Oblique Image
Capturing oblique imagery is critical to improving the appearance and shape reconstruction of 3D models.
Example of difference:
To capture oblique images manually:
- Pilot the drone to the same altitude as the original mission. However, this time with an angle between the camera and the ground of 45 degrees.
- Navigate the drone at this altitude and camera gimbal angle until you have the entire object you wish to model in the frame of the shot. Depending on the size and surroundings of an object this camera angle or altitude may not work. Please use your judgment.
- From this location pivot your drone in a radius around the object capturing photos as frequently as possible.
Example 3D Structure Workflow
Include Oblique Imagery During Upload
You can upload your set of oblique imagery with your nadir imagery to DroneDeploy. Please refer to our How to Process Datasets guide to learn how to do so.
Example 3D Model
This map covered 1.3 acres and included 128 images.
Some images were directly above the object of interest to establish context.
Others were taken at oblique angles to capture the side details of the turret.
Where to from here?
You can share your maps with users in or outside of DroneDeploy! Check our Data Sharing guide for instructions to share your 3D model.