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HaWoR: World-Space Hand Motion Reconstruction from Egocentric Videos

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arxiv 2501.02973 v1 pith:4GGBSJTO submitted 2025-01-06 cs.CV

classification cs.CV
keywords motioncamerahandegocentricreconstructionestimationhandshawor
verification ladder T0 review T1 audit T2 compute T3 formal
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Despite the advent in 3D hand pose estimation, current methods predominantly focus on single-image 3D hand reconstruction in the camera frame, overlooking the world-space motion of the hands. Such limitation prohibits their direct use in egocentric video settings, where hands and camera are continuously in motion. In this work, we propose HaWoR, a high-fidelity method for hand motion reconstruction in world coordinates from egocentric videos. We propose to decouple the task by reconstructing the hand motion in the camera space and estimating the camera trajectory in the world coordinate system. To achieve precise camera trajectory estimation, we propose an adaptive egocentric SLAM framework that addresses the shortcomings of traditional SLAM methods, providing robust performance under challenging camera dynamics. To ensure robust hand motion trajectories, even when the hands move out of view frustum, we devise a novel motion infiller network that effectively completes the missing frames of the sequence. Through extensive quantitative and qualitative evaluations, we demonstrate that HaWoR achieves state-of-the-art performance on both hand motion reconstruction and world-frame camera trajectory estimation under different egocentric benchmark datasets. Code and models are available on https://hawor-project.github.io/ .

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. CARI4D: Category Agnostic 4D Reconstruction of Human-Object Interaction

    cs.CV 2025-12 unverdicted novelty 7.0 of 10

    CARI4D is the first category-agnostic pipeline that produces metric-scale, spatially and temporally consistent 4D reconstructions of human-object interactions from monocular RGB videos via foundation-model hypothesis ...

  2. Open-AoE: An Open Egocentric Manipulation Dataset and Toolchain for Embodied Learning

    cs.RO 2026-07 conditional novelty 6.0 of 10

    Open-AoE releases 2,000 hours of smartphone egocentric manipulation video with MANO hand poses, camera trajectories, atomic action labels, and training tools for VLA and world-model pipelines.

  3. Hand-4DGS: Feed-Forward 3D Gaussian Splatting for 4D Hand Reconstruction from Egocentric Videos

    cs.CV 2026-06 unverdicted novelty 6.0 of 10

    Hand-4DGS introduces the first feed-forward 3D Gaussian Splatting framework for 4D hand reconstruction from egocentric videos, achieving ~60 FPS inference and generalization on H2O and ARCTIC datasets.

  4. What Matters When Cotraining Robot Manipulation Policies on Everyday Human Videos?

    cs.RO 2026-06 unverdicted novelty 6.0 of 10

    Cotraining on 532 everyday human videos with accurate hand labels improves robot policies by 29.7% when networks specialize to human versus robot embodiments.

  5. EgoForce: Forearm-Guided Camera-Space 3D Hand Pose from a Monocular Egocentric Camera

    cs.CV 2026-05 unverdicted novelty 6.0 of 10

    EgoForce recovers absolute camera-space 3D hand pose from monocular egocentric images using forearm guidance, a unified arm-hand transformer, and a closed-form ray-space solver that handles fisheye, perspective, and w...

  6. HumanEgo: Zero-Shot Robot Learning from Minutes of Human Egocentric Videos

    cs.RO 2026-05 unverdicted novelty 5.0 of 10

    HumanEgo reports 92.5% average success on four real robot tasks using only 15-30 minutes of human video per task and zero robot data, with zero-shot transfer to new robots and cameras.

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