手物体動画から触覚表現を学ぶTouch-JEPA
Touch-JEPA: Tactile Representation Learning from Hand-Object Video with Limited Tactile Supervision
手と物体の動画から自己教師あり学習で触覚表現を獲得し、限られた触覚データで接触や触覚強度を推定するフレームワークを提案した論文。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
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4. どうやって有効だと検証した?
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著者: Minseong Kweon, Qiao Feng, Yiming Huang, Lingjie Liu
分類: cs.CV
原文アブストラクト
Understanding contact and tactile magnitude in hand-object interaction is a key step toward physically intelligent systems, yet learning such representations is limited by the cost and restricted coverage of tactile measurements. We present Touch-JEPA, a framework for learning tactile representations from hand-object videos with limited tactile supervision. We first introduce a self-supervised pretraining objective that learns from video alone without tactile supervision. Using video-derived hand geometry, Touch-JEPA predicts masked visual features at corresponding hand-surface locations from spatial and temporal context, encouraging the representation to capture latent contact dynamics. We then extend this formulation to joint representation learning, where masked prediction is applied to all videos while tactile supervision is available only for a labeled subset, grounding the shared representation in measured contact and magnitude. With self-supervised pretraining alone, simple supervised readouts on frozen Touch-JEPA features outperform supervised baselines in contact discrimination and tactile magnitude estimation across three human-hand benchmarks, and transfer to robotic hands without robot tactile training data. Joint learning with limited tactile supervision further improves contact and magnitude estimation on the human-hand benchmarks. Together, these results show that hand-object video can provide scalable self-supervision for tactile representation learning, while limited tactile measurements provide complementary physical grounding.