DMS-SLAM: A General Visual SLAM System for Dynamic Scenes with Multiple Sensors

• Main Authors: Guihua Liu, Weilin Zeng, Bo Feng, Feng Xu
• Format: Article
• Language: English
• Published: MDPI AG 2019-08-01
• Series: Sensors
• Subjects: dynamic scenes; sliding window; Grid-based Motion Statistics (GMS); static 3D map points; accuracy and speed
• Online Access: https://www.mdpi.com/1424-8220/19/17/3714

Presently, although many impressed SLAM systems have achieved exceptional accuracy in a real environment, most of them are verified in the static environment. However, for mobile robots and autonomous driving, the dynamic objects in the scene can result in tracking failure or large deviation during pose estimation. In this paper, a general visual SLAM system for dynamic scenes with multiple sensors called DMS-SLAM is proposed. First, the combination of GMS and sliding window is used to achieve the initialization of the system, which can eliminate the influence of dynamic objects and construct a static initialization 3D map. Then, the corresponding 3D points of the current frame in the local map are obtained by reprojection. These points are combined with the constant speed model or reference frame model to achieve the position estimation of the current frame and the update of the 3D map points in the local map. Finally, the keyframes selected by the tracking module are combined with the GMS feature matching algorithm to add static 3D map points to the local map. DMS-SLAM implements pose tracking, closed-loop detection and relocalization based on static 3D map points of the local map and supports monocular, stereo and RGB-D visual sensors in dynamic scenes. Exhaustive evaluation in public TUM and KITTI datasets demonstrates that DMS-SLAM outperforms state-of-the-art visual SLAM systems in accuracy and speed in dynamic scenes.