Stroke3D:通过潜在扩散模型将2D笔划提升为可装配的3D模型 / Stroke3D: Lifting 2D strokes into rigged 3D model via latent diffusion models
1️⃣ 一句话总结
这篇论文提出了一个名为Stroke3D的新框架,它能让用户通过简单的2D草图描述和文字提示,直接生成带有骨骼、可以立即用于动画制作的3D模型,大大简化了3D内容创作的流程。
Rigged 3D assets are fundamental to 3D deformation and animation. However, existing 3D generation methods face challenges in generating animatable geometry, while rigging techniques lack fine-grained structural control over skeleton creation. To address these limitations, we introduce Stroke3D, a novel framework that directly generates rigged meshes from user inputs: 2D drawn strokes and a descriptive text prompt. Our approach pioneers a two-stage pipeline that separates the generation into: 1) Controllable Skeleton Generation, we employ the Skeletal Graph VAE (Sk-VAE) to encode the skeleton's graph structure into a latent space, where the Skeletal Graph DiT (Sk-DiT) generates a skeletal embedding. The generation process is conditioned on both the text for semantics and the 2D strokes for explicit structural control, with the VAE's decoder reconstructing the final high-quality 3D skeleton; and 2) Enhanced Mesh Synthesis via TextuRig and SKA-DPO, where we then synthesize a textured mesh conditioned on the generated skeleton. For this stage, we first enhance an existing skeleton-to-mesh model by augmenting its training data with TextuRig: a dataset of textured and rigged meshes with captions, curated from Objaverse-XL. Additionally, we employ a preference optimization strategy, SKA-DPO, guided by a skeleton-mesh alignment score, to further improve geometric fidelity. Together, our framework enables a more intuitive workflow for creating ready to animate 3D content. To the best of our knowledge, our work is the first to generate rigged 3D meshes conditioned on user-drawn 2D strokes. Extensive experiments demonstrate that Stroke3D produces plausible skeletons and high-quality meshes.
Stroke3D:通过潜在扩散模型将2D笔划提升为可装配的3D模型 / Stroke3D: Lifting 2D strokes into rigged 3D model via latent diffusion models
这篇论文提出了一个名为Stroke3D的新框架,它能让用户通过简单的2D草图描述和文字提示,直接生成带有骨骼、可以立即用于动画制作的3D模型,大大简化了3D内容创作的流程。
源自 arXiv: 2602.09713