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EgoTac: In-the-wild Tactile Prediction from Egocentric Vision
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Introduces EgoTac, an encoder-decoder model that predicts dense per-vertex MANO tactile force and contact from egocentric RGB clips, trained on a 5.7M-pair unified dataset including a new glove-based dataset (EgoTac-SC).
Problem
Tactile sensing is absent from most egocentric human manipulation datasets because it is hard to collect at scale; the paper asks whether dense tactile force and contact can be inferred purely from egocentric vision.
Approach
Map heterogeneous force-labeled and contact-only hand-object datasets onto a shared two-hand MANO topology and train a DINOv2-based temporal model with AdaLN tactile decoder using a joint force-contact objective, so contact-only data can supervise the contact head while force data supervises both heads.
Key results
- In-domain EgoTac achieves MAE_act of 0.056 N and temporal Pearson of 0.506 on the EgoTac-SC test set.
- On out-of-domain OAKINK2, EgoTac reaches AUROC 0.844 and F1 0.435, versus HACO at 0.772 and 0.400.
- On OpenTouch, EgoTac reaches force-cosine above 0.7 and rise/fall F1 above 0.4 after normalization, with scaling improving force-cosine to 0.787 at full data.
Surprising findings
- Removing explicit force supervision (contact-only training) raises global MAE to 0.322 N and drops temporal Pearson to 0.240, showing contact logits do not encode force scale.
- HACO achieves higher recall on OAKINK2 and FPHA, but the authors attribute this to over-predicting contact regions.
Limitations
- OOD force evaluation on OpenTouch is normalized to [0,1] because absolute Newton calibration is unavailable, so absolute force accuracy out-of-domain is not established.
- Contact-only datasets derive labels from mesh-proximity thresholds, which are analytical rather than physical contact.
- Zero-shot predictions on unconstrained videos are qualitative only, without quantitative ground truth.
Experimental setup
Datasets: EgoTac-SC HOI4D H2O HOT3D ARCTIC TACO OpenTouch OAKINK2 FPHA EgoDex EPIC-KITCHENS Ego4D
Benchmarks: EgoTac-SC held-out test HOT3D H2O ARCTIC OAKINK2 FPHA OpenTouch
Metrics: MAE MAE_act temporal Pearson AUROC IoU Precision Recall F1 force-cosine rise F1
Baselines: EgoTac-i BSTRO DECO HACO
Builds on: DINOv2 MANO AdamW
Closest papers by meaning
- Touch in the Wild: Learning Fine-Grained Manipulation with a Portable Visuo-Tactile Gripper (NeurIPS 2025 · similarity 0.90)
- AnyTouch: Learning Unified Static-Dynamic Representation across Multiple Visuo-tactile Sensors (ICLR 2025 · similarity 0.88)
- PhysTacGen: Physics-Aware Visual-Tactile Sensor Image Generation (NeurIPS 2026 · similarity 0.88)
- HandEdit: A Unified Benchmark for Egocentric Human-to-Robot Dexterous Hand Image Editing (NeurIPS 2026 · similarity 0.88)
- Tactile MNIST: Benchmarking Active Tactile Perception (NeurIPS 2026 · similarity 0.88)
- VinT-6D: A Large-Scale Object-in-hand Dataset from Vision, Touch and Proprioception (ICML 2024 · similarity 0.88)
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