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基于部件级自回归模型的艺术化网格生成方法

Towards Artistic Mesh Generation via Part-wise Autoregressive Modeling

  • 摘要: 在高分辨率及部件级解构的艺术化网格生成任务中,自回归方法通过学习网格顶点和面片的序列分布来捕捉强网格先验,虽然能够生成高质量拓扑,但是受限于注意力机制的二次方复杂度难以提升输出分辨率。为此,提出一种部件级自回归建模方法MeshPack。首先将网格分解为多个部件级序列并进行迭代生成,显著降低计算复杂度并自然提升网格分辨率;然后设计一个信息传递模块,通过融合先前生成的部件与当前部件来确保部件级序列之间的一致性,并在生成过程中引入全局上下文感知;最后构建并引入一个包含精细几何、干净拓扑和语义部件解构的高质量三维室内资产数据集FurniSet3D用于模型训练。在FurniSet3D数据集上与现有主流方法进行实验,以网格拓扑质量和部件解构合理性为评价指标,定性分析的结果表明,MeshPack能够生成精细分辨率的网格,在室内资产生成任务上显著优于对比方法。

     

    Abstract:  This research addresses high-resolution, part-level artistic mesh generation. While current autoregressive methods yield high-quality topology, their scalability to high resolutions is bottlenecked by the quadratic complexity of attention mechanisms. To resolve this, MeshPack, a part-level autoregressive framework, is proposed. By decomposing meshes into multiple sequences for iterative generation, this approach signifi-cantly reduces computational complexity and naturally boosts output resolution. Furthermore, an infor-mation passing module is introduced to fuse previously generated parts with the current one, ensuring global context awareness and cross-part consistency. For model training, FurniSet3D—a high-quality fur-niture dataset featuring refined geometry, clean topology, and semantic decomposition is constructed. Qualitative evaluations on FurniSet3D demonstrate that MeshPack generates fine-resolution meshes with superior topological quality and reasonable part decomposition, substantially outperforming existing methods in furniture generation.

     

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