PartCHOI: Part-Aware Guidance for Clothed Human-Object Interaction Generation

Existing single-view 3D human generation methods remain limited in modeling clothed human–object interactions (CHOI), due to two key challenges: (1) the lack of reliable guidance for human–object spatial relationships resulting in implausible layouts, and (2) the absence of physical interaction modeling between entities leading to unrealistic contacts. To address these issues, we propose PartCHOI, a part-aware method that formulates the CHOI task as generating a human-centered scene with objects treated as parts of the human body. Specifically, to model spatial relationships between objects and the human, we design a Human-Guided Pose Estimator (H-GPE) that efficiently infers objectpart poses by separating and localizing them within the coupled interaction scene. Furthermore, we devise an Object-Guided Refinement Module (O-GRM) to perform fine-grained human surface deformation for preventing penetration into objects, thus yielding realistic contact. Benefiting from the above design, PartCHOI generates plausible and detailed interactive scenes while avoiding lengthy layout optimization. Extensive experiments demonstrate our approach surpasses state-of-the-art methods in generation and interaction quality.