AniClipart: Clipart Animation with Text-to-Video Priors

• URL: http://arxiv.org/abs/2404.12347v1
• Date: Thu, 18 Apr 2024 17:24:28 GMT
• Title: AniClipart: Clipart Animation with Text-to-Video Priors
• Authors: Ronghuan Wu, Wanchao Su, Kede Ma, Jing Liao,
• Abstract summary: We introduce AniClipart, a system that transforms static images into high-quality motion sequences guided by text-to-video priors. Experimental results show that the proposed AniClipart consistently outperforms existing image-to-video generation models.
• Score: 28.76809141136148
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Clipart, a pre-made graphic art form, offers a convenient and efficient way of illustrating visual content. Traditional workflows to convert static clipart images into motion sequences are laborious and time-consuming, involving numerous intricate steps like rigging, key animation and in-betweening. Recent advancements in text-to-video generation hold great potential in resolving this problem. Nevertheless, direct application of text-to-video generation models often struggles to retain the visual identity of clipart images or generate cartoon-style motions, resulting in unsatisfactory animation outcomes. In this paper, we introduce AniClipart, a system that transforms static clipart images into high-quality motion sequences guided by text-to-video priors. To generate cartoon-style and smooth motion, we first define B\'{e}zier curves over keypoints of the clipart image as a form of motion regularization. We then align the motion trajectories of the keypoints with the provided text prompt by optimizing the Video Score Distillation Sampling (VSDS) loss, which encodes adequate knowledge of natural motion within a pretrained text-to-video diffusion model. With a differentiable As-Rigid-As-Possible shape deformation algorithm, our method can be end-to-end optimized while maintaining deformation rigidity. Experimental results show that the proposed AniClipart consistently outperforms existing image-to-video generation models, in terms of text-video alignment, visual identity preservation, and motion consistency. Furthermore, we showcase the versatility of AniClipart by adapting it to generate a broader array of animation formats, such as layered animation, which allows topological changes.

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