Images gathered with digital cameras are issue to a particular degree of geometric distortion. A elementary prerequisite of computerized triangulation (AT) and mosaicking would be the accurate calibration with the sensor to undistort captured images the right way. . Even UAVs which can be small and comparatively inexpensive (below US$1,000) https://dedicatedserverforbroadca18495.fitnell.com/71411530/the-smart-trick-of-uav-digital-mapping-services-bd-that-nobody-is-discussing