While surveying with drones, images of the ground are extracted from multiple vantage points. Through processing these images, a photogrammetry software may then create orthomosaics and 3D models, from which it can measure accurate distance, in addition to surfaces and volumes of physical objects.
Data outputs from the drone
Images taken by the drone are usually saved on a memory card (such as Sdcard), just like for just about any other camera. With regards to the technology utilized by the drone, the images already are geo-tagged or can be imported in a geo-tagging software, such as WingtraHub. In line with the size of the survey site, you almost certainly have between a few hundred images and some thousand, and each image contains geographical information (X, Y, Z).
Importing right into a photogrammetry software
After importing or uploading the geo-tagged images in a photogrammetry software such as for example Propeller, Bentley ContextCapture or Pix4D, images will undoubtedly be stitched together to generate 2D or 3D models of the surveyed site. Image processing could be a lengthy process according to the number of images and the performance of your computer. https://notes.io/qZ2D7 are desktop-based, thus requiring robust hardware. Other software is cloud-based, employing powerful servers instead of your neighborhood computer to process the data.