4.6 Article

OTE-SLAM: An Object Tracking Enhanced Visual SLAM System for Dynamic Environments

Journal

SENSORS
Volume 23, Issue 18, Pages -

Publisher

MDPI
DOI: 10.3390/s23187921

Keywords

visual SLAM; object tracking; dynamic environments

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With the rapid development of autonomous driving and robotics applications, visual SLAM has become a hot research topic. In dynamic environments, existing SLAM systems often fail to estimate camera pose accurately. To address this issue, we propose OTE-SLAM, an object tracking enhanced visual SLAM system, which improves the accuracy of localization in dynamic environments.
With the rapid development of autonomous driving and robotics applications in recent years, visual Simultaneous Localization and Mapping (SLAM) has become a hot research topic. The majority of visual SLAM systems relies on the assumption of scene rigidity, which may not always hold true in real applications. In dynamic environments, SLAM systems, without accounting for dynamic objects, will easily fail to estimate the camera pose. Some existing methods attempt to address this issue by simply excluding the dynamic features lying in moving objects. But this may lead to a shortage of features for tracking. To tackle this problem, we propose OTE-SLAM, an object tracking enhanced visual SLAM system, which not only tracks the camera motion, but also tracks the movement of dynamic objects. Furthermore, we perform joint optimization of both the camera pose and object 3D position, enabling a mutual benefit between visual SLAM and object tracking. The results of experiences demonstrate that the proposed approach improves the accuracy of the SLAM system in challenging dynamic environments. The improvements include a maximum reduction in both absolute trajectory error and relative trajectory error by 22% and 33%, respectively.

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