It involves aerial surveys conducted with terrestrial laser scanning (LiDAR), drones, and photogrammetry exercises. The common types of remote sensing are Radar, Lidar, and satellites (or photogrammetry). The most common types of remote sensing are radar, lidar, and satellites (also photogrammetry). The DEM could be acquired through techniques such as photogrammetry, lidar, IfSAR, land surveying, etc. Two related research fields are photogrammetry and LIDAR, especially in low-altitude and indoor 3D environments. Its research domains include industrial inspection, aerial photogrammetry, security, spectroscopy, medical fluorescence and astronomy. Machine vision technology called photogrammetry uses 3D scanners to capture 3D geometry. They also experimentation in aerial photogrammetry. In 2011 laser photogrammetry was proposed to improve measurement accuracy. In remote areas technics of photogrammetry and tacheometry can be applied. It was made possible with the technology of photogrammetry and motion capture. Stereoscopy is used in photogrammetry and also for entertainment through the production of stereograms. There exist many software packages for photogrammetry; see comparison of photogrammetry software. They are mainly used in photogrammetry and image interpretation. The scale of events is transmitted using lighting, computer graphics and photogrammetry.