OpenDroneMap is an open source photogrammetry toolkit to process aerial imagery (usually from a drone) into maps and 3D models.
[6] OpenDroneMap has been integrated within American Red Cross's in-field Portable OpenStreetMap system.
[8] OpenDroneMap uses OpenSfM and other libraries to perform the specific tasks in its workflow.
Before processing the images, it can lower their resolution in order to save computational resources.
It has a split-merge feature, which significantly reduces the performance, but allows computers with small amount of RAM to process large datasets.