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Paper · 2601.12432 · 2026

SkeFi: Cross-Modal Knowledge Transfer for Wireless Skeleton-Based Action Recognition

Jianfei Yang, Yunjiao Zhou, Shunyu Huang

arXiv · PDF · Open in the Atlas

Code that ran

We lifted 9 functions out of this paper's own repositories and ran 5 of them in a sandbox. "Ran" means the function executed on a synthesized input and returned a value. It is not a reproduction of the paper's results.

RepositoryRoleRan
Huang0035/Skefi — 4 of 8
copy not recorded — 1 of 1
FunctionStatusWhere it lives
MultiScale_TemporalConv Ran Huang0035/Skefi/model/TCAGC_ESP.py
pointer only (licence: NONE) · get_code("ef052095fdfc57f5")
TemporalConv Ran Huang0035/Skefi/model/TCAGC_ESP.py
pointer only (licence: NONE) · get_code("6bf32346ae40a7d2")
import_class Ran this paper's copy was not recorded; identical code first harvested from iamjeff7/j-va-aagcn
pointer only · get_code("ffed4f85d50832c9")
unit_gcn Ran Huang0035/Skefi/model/TCAGC_ESP.py
pointer only (licence: NONE) · get_code("a7f6340f84183fb4")
unit_tcn Ran Huang0035/Skefi/model/TCAGC_ESP.py
pointer only (licence: NONE) · get_code("29582835e80c1d70")
Model Not yet run Huang0035/Skefi/model/TCAGC_ESP.py
pointer only (licence: NONE) · get_code("e7cf371ff7c23405")
TCN_GCN_unit Not yet run Huang0035/Skefi/model/TCAGC_ESP.py
pointer only (licence: NONE) · get_code("7ea30bb79d77909b")
conv_branch_init Not yet run Huang0035/Skefi/model/TCAGC_ESP.py
pointer only (licence: NONE) · get_code("ac6409a06ff2da4c")
weights_init Not yet run Huang0035/Skefi/model/TCAGC_ESP.py
pointer only (licence: NONE) · get_code("f1917c3011636f99")

Repositories linked to this paper

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Abstract

Skeleton-based action recognition leverages human pose keypoints to categorize human actions, which shows superior generalization and interoperability compared to regular end-toend action recognition. Existing solutions use RGB cameras to annotate skeletal keypoints, but their performance declines in dark environments and raises privacy concerns, limiting their use in smart homes and hospitals. This paper explores non-invasive wireless sensors, i.e., LiDAR and mmWave, to mitigate these challenges as a feasible alternative. Two problems are addressed: (1) insufficient data on wireless sensor modality to train an accurate skeleton estimation model, and (2) skeletal keypoints derived from wireless sensors are noisier than RGB, causing great difficulties for subsequent action recognition models. Our work, SkeFi, overcomes these gaps through a novel cross-modal knowledge transfer method acquired from the data-rich RGB modality. We propose the enhanced Temporal Correlation Adaptive Graph Convolution (TC-AGC) with frame interactive enhancement to overcome the noise from missing or inconsecutive frames. Additionally, our research underscores the effectiveness of enhancing multiscale temporal modeling through dual temporal convolution. By integrating TC-AGC with temporal modeling for cross-modal transfer, our framework can extract accurate poses and actions from noisy wireless sensors. Experiments demonstrate that SkeFi realizes state-of-the-art performances on mmWave and LiDAR. The code is available at https://github.com/Huang0035/Skefi.

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