SketchRodGS: Sketch-based Extraction of Slender Geometries for Animating Gaussian Splatting Scenes
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866917184650870784 |
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| author | Watanabe, Haato Umetani, Nobuyuki |
| author_facet | Watanabe, Haato Umetani, Nobuyuki |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_02072 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | SketchRodGS: Sketch-based Extraction of Slender Geometries for Animating Gaussian Splatting Scenes Watanabe, Haato Umetani, Nobuyuki Graphics Computer Vision and Pattern Recognition 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. |
| title | SketchRodGS: Sketch-based Extraction of Slender Geometries for Animating Gaussian Splatting Scenes |
| topic | Graphics Computer Vision and Pattern Recognition |
| url | https://arxiv.org/abs/2601.02072 |