Visual Slam-Based Mapping and Localization for Aerial Images


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Eker O., Çevikalp H., Saribas H.

Journal of Engineering Research and Sciences, vol.1, no.1, pp.1-9, 2022 (Peer-Reviewed Journal)

Abstract

Fast and accurate observation of an area in disaster scenarios such as earthquake, flood

and avalanche is crucial for first aid teams. Digital surface models, orthomosaics and object detection

algorithms can play an important role for rapid decision making and response in such scenarios. In

recent years, Unmanned Aerial Vehicles (UAVs) have become increasingly popular because of their

ability to perform different tasks at lower costs. A real-time orthomosaic generated by using UAVs can

be helpful for various tasks where both speed and efficiency are required. An orthomosaic provides an

overview of the area to be observed, and helps the operator to find the regions of interest. Then, object

detection algorithms help to identify the desired objects in those regions. In this study, a monocular

SLAM based system, which combines the camera and GPS data of the UAV, has been developed for

mapping the observed environment in real-time. A deep learning based state-of-the-art object detection

method is adapted to the system in order to detect objects in real time and acquire their global positions.

The performance of the developed method is evaluated in both single and multiple UAVs scenarios.