Satellite & Space Missions

Biography

Biography: Ayobami T Salami

Abstract

This study uses a high resolution digital orthophoto derived from an Unmanned Aerial Vehicle (UAV) aerial photograph to update the land use map of the Obafemi Awolowo University Campus while focusing on the built up environment. An aerial survey was conducted in the study area using commercially available low-cost Phantom II Vision Quad copter. Sets of overlapping aerial photographs captured with optical camera on-board the UAV were used to produce 8 cm orthophoto. A digital copy of 1987 land use paper map of the campus was obtained by heads-up digitizing, the digital map was then overlaid on the orthophoto from which new buildings and features were extracted and populated with relevant attributes. These features were used to compose an up-to-date map. An updated land use map of the Obafemi Awolowo University campus produced shows an addition of 187 building structures, with sizes ranging from small service centers to large administrative blocks. The major changes which took place in the study area included the removal of the old bukateria, and the construction of new market and the swimming pool (which is at the sport complex of the campus). Most of the buildings are created around the existing ones with some gradual build-up of structures at the eastern part of the campus. This may cause congestion on some facilities such as roads network. The study was able to show that the use of micro UAV is a cost effective way to derive high resolution spatial datasets which could be used for monitoring land use changes in the developing countries.