Vector sketch animation generation with differentiable motion trajectories

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dc.contributor.authorZhu, Xinding
dc.contributor.authorYang, Xinye
dc.contributor.authorZheng, Shuyang
dc.contributor.authorZhang, Zhexin
dc.contributor.authorGao, Fei
dc.contributor.authorHuang, Jing
dc.contributor.authorChen, Jiazhou
dc.contributor.editorMasia, Belen
dc.contributor.editorThies, Justus
dc.date.accessioned2026-04-17T09:45:27Z
dc.date.available2026-04-17T09:45:27Z
dc.date.issued2026
dc.description.abstractSketching is a direct and inexpensive means of visual expression. Though image-based sketching has been well studied, videobased sketch animation generation is still very challenging due to the temporal coherence requirement. In this paper, we propose a novel end-to-end automatic generation approach for vector sketch animation. To solve the flickering issue, we introduce a Differentiable Motion Trajectory (DMT) representation that describes the frame-wise movement of stroke control points using differentiable polynomial-based trajectories. DMT enables global semantic gradient propagation across multiple frames, significantly improving the semantic consistency and temporal coherence, and producing high-framerate output. DMT employs a Bernstein basis to balance the sensitivity of polynomial parameters, thus achieving more stable optimization. Instead of implicit fields, we introduce sparse track points for explicit spatial modeling, which improves efficiency and supports long-duration video processing. Evaluations on DAVIS and LVOS datasets demonstrate the superiority of our approach over SOTA methods. Cross-domain validation on 3D models and text-to-video data confirms the robustness and compatibility of our approach.
dc.description.number2
dc.description.sectionheaders2D and Beyond: Stylized Animation and Reconstruction
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume45
dc.identifier.doi10.1111/cgf.70335
dc.identifier.issn1467-8659
dc.identifier.pages14 pages
dc.identifier.urihttps://diglib.eg.org/handle/10.1111/cgf70335
dc.identifier.urihttps://doi.org/10.1111/cgf70335
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.
dc.rightsCC-BY-4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectSketch Synthesis
dc.subjectAnimation Generation
dc.subjectDifferentiable Motion Trajectories
dc.subjectTemporal Coherence
dc.titleVector sketch animation generation with differentiable motion trajectories
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