arXiv Computer Vision

BUMP: Body-driven Unified Multi-object Physics for HOI Synthesis

arXiv Computer Vision
Sep 14

Uni-HOI:A Unified framework for Learning the Joint distribution of Text and Human-Object Interaction

Uni-HOI is a unified framework that learns the joint distribution among text, human motion, and object motion for 4D human‑object interaction (HOI). It uses large language models and two motion‑specific VQ‑VAEs to convert heterogeneous motion data into token sequences, enabling seamless integration of all three modalities. A two‑stage training strategy first captures correlations on a large‑scale HOI dataset and then fine‑tunes for specific tasks, achieving strong performance on text‑driven HOI generation, object‑motion‑driven human motion generation, and human‑motion‑driven object motion prediction.

By Mengfei Zhang, Jinlu Zhang, Zhigang Tu
arXiv AI
Oct 9

MAMHOI: Factorizing Scene-Aware Human-Object Interaction through Affordances

MAMHOI introduces an affordance-mediated factorization for generating scene-aware human‑object interactions. It separates scene understanding and motion synthesis: a scene‑conditioned model predicts feasible interaction locations and modes, while an affordance‑conditioned model generates the corresponding human‑object motion. This approach enables learning from separate human‑scene and human‑object datasets, reducing object‑scene penetration and improving interaction realism in complex indoor environments.

By Mingyuan Lei, Yoonchang Sung, Tat-Jen Cham
arXiv AI
Oct 7

SMART: Zero-Shot Sim-to-Real Articulated Object Manipulation via Large-Scale Synthetic Pretraining

SMART introduces a scalable system for zero‑shot sim‑to‑real articulated object manipulation by leveraging large‑scale synthetic pretraining. The core component, SMART‑Sim, is an articulation‑aware simulation platform that facilitates efficient task generation and demonstration collection. Using SMART‑Sim, the authors synthesize SMART‑Data, comprising over 1 million demonstrations across 44 task types, 5 robot setups, and 2,507 articulated objects, and demonstrate that a vision‑language‑action model pretrained on this data achieves competitive simulation performance and zero‑shot transfer to real‑world tasks.

By Jicong Ao, Shuhan Jiang, Yuling Zhong, Yanwen Liu, Yuhan Gao, Jiangyuan Zhao, Yang Zhang, Shiqiang Zhu, Chenjia Bai, Xuelong Li
arXiv AI
Oct 21

World2HOSI: A Multi-Expert Harness for Long-Horizon Human-Object-Scene Interaction Generation

World2HOSI is a multi‑expert harness that generates long‑horizon human‑object‑scene interaction (HOSI) data by orchestrating existing human‑object interaction (HOI) and human‑scene interaction (HSI) models. It builds a persistent scene state from decoupled background and object assets, plans action stages, invokes experts via their native interfaces, and updates the scene after each action, ensuring physical plausibility through bounded residual optimization and contact‑driven physics simulation. Experiments and a perceptual user study demonstrate that World2HOSI achieves superior task completion and interaction quality while producing more diverse data than prior approaches.

By Jiushu Li, Haoran Wang, Yumeng Liu, Zhiyang Dou, Yuan Liu, Yuexin Ma, Cheng Lin
arXiv Computer Vision
Oct 12

DeVI: Physics-based Dexterous Human-Object Interaction via Synthetic Video Imitation

DeVI (Dexterous Video Imitation) is a framework that learns physics‑based character control for dexterous human‑object interaction by imitating text‑conditioned synthetic videos. It introduces hybrid imitation targets that combine reconstructed 3D human motion with tracked 2D object trajectories, avoiding explicit 3D object motion reconstruction. Visual HOI Alignment further refines the human reference to match both the generated video and the initial 3D object configuration, improving reconstruction quality and imitation success.

By Hyeonwoo Kim, Jeonghwan Kim, Kyungwon Cho, Junyoung Lee, Hanbyul Joo