DBA-Fusion: Tightly Integrating Deep Dense Visual Bundle Adjustment with Multiple Sensors for Large-Scale Localization and Mapping

• URL: http://arxiv.org/abs/2403.13714v1
• Date: Wed, 20 Mar 2024 16:20:54 GMT
• Title: DBA-Fusion: Tightly Integrating Deep Dense Visual Bundle Adjustment with Multiple Sensors for Large-Scale Localization and Mapping
• Authors: Yuxuan Zhou, Xingxing Li, Shengyu Li, Xuanbin Wang, Shaoquan Feng, Yuxuan Tan,
• Abstract summary: We tightly integrate the trainable deep dense bundle adjustment (DBA) with multi-sensor information through a factor graph. A pipeline for visual-inertial integration is firstly developed, which provides the minimum ability of metric-scale localization and mapping. The results validate the superior localization performance of our approach, which enables real-time dense mapping in large-scale environments.
• Score: 3.5047603107971397
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Visual simultaneous localization and mapping (VSLAM) has broad applications, with state-of-the-art methods leveraging deep neural networks for better robustness and applicability. However, there is a lack of research in fusing these learning-based methods with multi-sensor information, which could be indispensable to push related applications to large-scale and complex scenarios. In this paper, we tightly integrate the trainable deep dense bundle adjustment (DBA) with multi-sensor information through a factor graph. In the framework, recurrent optical flow and DBA are performed among sequential images. The Hessian information derived from DBA is fed into a generic factor graph for multi-sensor fusion, which employs a sliding window and supports probabilistic marginalization. A pipeline for visual-inertial integration is firstly developed, which provides the minimum ability of metric-scale localization and mapping. Furthermore, other sensors (e.g., global navigation satellite system) are integrated for driftless and geo-referencing functionality. Extensive tests are conducted on both public datasets and self-collected datasets. The results validate the superior localization performance of our approach, which enables real-time dense mapping in large-scale environments. The code has been made open-source (https://github.com/GREAT-WHU/DBA-Fusion).

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