RIDE: 再局在化情報を活用した3Dガウシアンスプラッティングによる深度推定
RIDE: Relocalization-Informed Depth Estimation with 3D Gaussian Splatting
ロボットのRGB映像から、3Dガウシアンスプラッティングと再局在化の幾何情報を組み合わせて高精度な密なメートル深度を推定する手法を提案。
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著者: Jiarong Lian, Zhe Xiao, Zhaoyang Zhang, Wei Li, Ruizhi Chen
分類: cs.RO
原文アブストラクト
Render--match--PnP relocalization establishes correspondences between query image pixels and 3D map points for camera pose recovery, but their potential to support dense depth estimation is often overlooked. To exploit this geometric information, we present RIDE, which estimates dense metric depth from a robot's RGB stream. Given a metrically scaled 3D Gaussian Splatting (3DGS) model, RIDE combines sparse metric depth observations derived from PnP-RANSAC inlier correspondences with the geometric prior of a pretrained video-depth model. To handle uneven and intermittent observations, it integrates global and local depth correction with temporal memory, supporting depth estimation through short observation gaps after metric scale initialization. Trained on public RGB-D videos, RIDE is evaluated on robot sequences without fine tuning. Experiments show improved depth accuracy and temporal consistency over scale-only calibration, demonstrating how localization geometry can support both pose recovery and dense robot perception.