This paper presents a novel framework for modeling and conditional generation of 3D articulated objects. Troubled by flexibility-quality tradeoffs, existing methods are often limited to using predefined structures or retrieving shapes from static datasets. To address these challenges, we parameterize an articulated object as a tree of tokens and employ a transformer to generate both the object's high-level geometry code and its kinematic relations. Subsequently, each sub-part's geometry is further decoded using a signed-distance-function (SDF) shape prior, facilitating the synthesis of high-quality 3D shapes. Our approach enables the generation of diverse objects with high-quality geometry and varying number of parts. Comprehensive experiments on conditional generation from text descriptions demonstrate the effectiveness and flexibility of our method.
View on arXiv@article{su2025_2412.07237,
title={ ArtFormer: Controllable Generation of Diverse 3D Articulated Objects },
author={ Jiayi Su and Youhe Feng and Zheng Li and Jinhua Song and Yangfan He and Botao Ren and Botian Xu },
journal={arXiv preprint arXiv:2412.07237},
year={ 2025 }
}