MFVINS: 複数魚眼カメラを用いた視覚慣性システム
MFVINS: Multiple Fisheye Camera-Based Visual Inertial System
複数の魚眼カメラとIMUを統合したSLAMシステムを提案し、単眼カメラの問題(遮蔽や照明変化、テクスチャレス環境での誤差蓄積)を改善。IMU支援の特徴追跡と学習ベースの深度推定を用いた再投影誤差により、リアルタイムで高精度な姿勢推定を実現。
詳しい要約
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著者: Eunseong Jang, YuJin Chung, Sang Jun Lee, Jihyun Yoon, HyungGi Jo
分類: cs.RO, cs.CV
原文アブストラクト
A simultaneous localization and mapping (SLAM) method using a monocular camera and a low-cost inertial measurement unit (IMU) sensor is an effective way to fulfill a low-cost sensor configuration. Using this sensor configuration, visual-inertial system (VINS) focuses on fusing data from a camera and an IMU sensor to estimate the six degrees-of-freedom (DOF) of the sensor pose. Typically, VINS uses only a single camera as visual input, which lead to problems such as error accumulation due to occlusion, various illumination, and textureless environments. In this paper, we propose a new multiple fisheye camera-based visual-inertial system called MFVINS. We present an IMU-aided FAST feature tracker for multiple cameras that enables efficient extraction and robust matching of local features. Then, the proposed method filters out outliers caused by fisheye distortion on the normalized image plane. Subsequently, a new reprojection error with physical validity constraints is proposed for bundle adjustment using learning-based depth estimation. The proposed method is applied to various scenarios, and its effectiveness is demonstrated by comparing previous VINS methods. In particular, MFVINS is implemented in real-time process to leverage the advantages of using multiple cameras -- robustness against occlusion and textureless regions -- while reducing the computational burden.