Application of Multi-Head Oblique Cameras on UAV to Delineate of Building Footprint

การประยุกต์ใช้ระบบกล้องชุดถ่ายเฉียงบนอากาศยานไร้คนขับเพื่อรังวัดรอยพิมพ์ฐานอาคาร

Abstract

This article discusses the application of using oblique images from multi-head oblique cameras which are installed on a VTOL (Vertical Take-off and Landing) Unmanned Aerial Vehicle (UAV) to survey building footprints for civil engineering design and urban planning. The system consists of two cameras which align obliquely with the nadir and the flight direction. The two cameras are tied on camera-rig equipment and are positioned by using relative translation and relative rotation. The image acquisition is designed to be a single grid flight path with 80% front overlap and 60% side overlap, while the two cameras take pictures simultaneously. The result shows that the accuracy of building footprints from oblique images surveying is comparable to that of ground survey methods and is sufficient to display on 1:1,000 scale map and smaller.