[Submitted on 21 Sep 2026]
Title:Geometric and Semantic Coupling for Interaction Understanding in 3D Scenes
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Abstract:Interaction understanding in 3D scenes requires a joint description of movable parts, their motion, and the regions through which they can be operated. We present Segment-Snap, which connects these outputs through the physical relationship between parts and handles. Learned predictors identify broad part surfaces and small handles. A geometric decoder uses planar and upright priors to constrain motion, then selects hinge lines using predicted handle locations, without training a motion regressor. Conversely, a joint part-and-handle predictor supplies additional handle candidates, whose motion classes are refined using containing parts. Each information transfer is applied once, without iterative feedback. On Articulate3D validation, handle guidance raises motion-gated AP from 13.74% to 40.98% at fixed masks and axes. Additional handle candidates raise handle AP from 24.63% to 29.65%; part-based class correction adds 0.98 points, and full context reaches 30.99%. Repeated training, learned-decoder controls and paired visualizations establish the benefits and limitations of combining geometric and semantic evidence for interaction understanding.
Comments: Project page: this https URL
Subjects:
Computer Vision and Pattern Recognition (cs.CV); Artificial Intelligence (cs.AI)
Cite as: arXiv:2609.25247 [cs.CV]
(or arXiv:2609.25247v1 [cs.CV] for this version)
https://doi.org/10.48550/arXiv.2609.25247
arXiv-issued DOI via DataCite (pending registration)
Submission history
From: Hanyang Kong [view email] [v1] Mon, 21 Sep 2026 18:02:34 UTC (2,201 KB)
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