用户手绘草图即可提取3D场景中细长物体的骨架线
SketchRodGS: Sketch-based Extraction of Slender Geometries for Animating Gaussian Splatting Scenes
- 基于屏幕空间最短路径算法，用动态规划高效构建细长部分的折线网格
- 可从噪声多、无连接信息的高斯点云中准确提取细长结构的中心线
- 适合需要快速生成动画骨架的3D内容创作与物理模拟场景
细长弹性物体的物理仿真通常需将其离散为折线。然而，从高斯点云中构建折线极具挑战，因高斯点云缺乏连接关系且原始配置含大量噪声。本文提出一种方法，仅需用户手绘草图输入，即可从高斯点云场景中提取物体细长部分的折线表示。该方法利用屏幕空间最短路径分析，通过动态规划高效构建出鲁棒的折线网格。我们在多个真实场景案例中验证了该方法的有效性。
原文摘要 · Abstract (English)
Physics simulation of slender elastic objects often requires discretization as a polyline. However, constructing a polyline from Gaussian splatting is challenging as Gaussian splatting lacks connectivity information and the configuration of Gaussian primitives contains much noise. This paper presents a method to extract a polyline representation of the slender part of the objects in a Gaussian splatting scene from the user's sketching input. Our method robustly constructs a polyline mesh that represents the slender parts using the screen-space shortest path analysis that can be efficiently solved using dynamic programming. We demonstrate the effectiveness of our approach in several in-the-wild examples.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品；中文卡片由大模型生成，请以原文为准。