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Longfei Xu

4 accepted papers

2025

Arti-PG: A Toolbox for Procedurally Synthesizing Large-Scale and Diverse Articulated Objects with Rich Annotations

ICCV 2025poster

The acquisition of substantial volumes of 3D articulated object data is expensive and time-consuming, and consequently the scarcity of 3D articulated object data becomes an obstacle for deep learning methods to achieve remarkable performance in various articulated object understanding tasks. Meanwhi…

2025

Discovering Conceptual Knowledge with Analytic Ontology Templates for Articulated Objects

AAAI 2025technical

Human cognition can leverage fundamental conceptual knowledge, like geometry and kinematic ones, to appropriately perceive, comprehend and interact with novel objects. Motivated by this finding, we aim to endow machine intelligence with an analogous capability through performing at the conceptual le…

2024

ConceptFactory: Facilitate 3D Object Knowledge Annotation with Object Conceptualization

NeurIPS 2024poster

We present ConceptFactory, a novel scope to facilitate more efficient annotation of 3D object knowledge by recognizing 3D objects through generalized concepts (i.e. object conceptualization), aiming at promoting machine intelligence to learn comprehensive object knowledge from both vision and roboti…

2024

Spatio-Temporal Fusion for Human Action Recognition via Joint Trajectory Graph

AAAI 2024technical

Graph Convolutional Networks (GCNs) and Transformers have been widely applied to skeleton-based human action recognition, with each offering unique advantages in capturing spatial relationships and long-range dependencies. However, for most GCN methods, the construction of topological structures rel…

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