arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2304.14404cs.CV
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用于可控视频合成的运动条件扩散模型

Motion-Conditioned Diffusion Model for Controllable Video Synthesis

University of California, Merced(加州大学默塞德分校);Meta;NVIDIA(英伟达);Google Research(谷歌研究院)

Tsai-Shien Chen, Chieh Hubert Lin, Hung-Yu Tseng, Tsung-Yi Lin, Ming-Hsuan Yang

AI总结:

提出 MCDiff 条件扩散模型,利用起始帧、稀疏笔画、光流补全与扩散生成实现笔画引导的可控视频合成,并在视觉质量及 MPII Human Pose 实验中达到先进效果。

摘要:

扩散模型的最新进展极大提升了合成内容的质量和多样性。为利用扩散模型的表达能力,研究人员探索了多种可控机制,使用户能够直观引导内容合成过程。尽管最新工作主要集中于视频合成,但仍缺乏有效方法来控制和描述所需的内容与运动。针对这一空白,我们提出 MCDiff,这是一种条件扩散模型,可从起始图像帧和一组笔画生成视频,这些笔画允许用户指定合成所需的内容和动态。为解决稀疏运动输入的歧义并获得更好的合成质量,MCDiff 首先利用光流补全模型,基于对视频帧的语义理解和稀疏运动控制来预测密集视频运动。随后,扩散模型合成高质量的未来帧以形成输出视频。我们通过定性和定量结果表明,MCDiff 在笔画引导的可控视频合成中实现了最先进的视觉质量。在 MPII Human Pose 上的额外实验进一步展示了我们的模型在多样化内容和运动合成方面的能力。

英文摘要:

Recent advancements in diffusion models have greatly improved the quality and diversity of synthesized content. To harness the expressive power of diffusion models, researchers have explored various controllable mechanisms that allow users to intuitively guide the content synthesis process. Although the latest efforts have primarily focused on video synthesis, there has been a lack of effective methods for controlling and describing desired content and motion. In response to this gap, we introduce MCDiff, a conditional diffusion model that generates a video from a starting image frame and a set of strokes, which allow users to specify the intended content and dynamics for synthesis. To tackle the ambiguity of sparse motion inputs and achieve better synthesis quality, MCDiff first utilizes a flow completion model to predict the dense video motion based on the semantic understanding of the video frame and the sparse motion control. Then, the diffusion model synthesizes high-quality future frames to form the output video. We qualitatively and quantitatively show that MCDiff achieves the state-the-of-art visual quality in stroke-guided controllable video synthesis. Additional experiments on MPII Human Pose further exhibit the capability of our model on diverse content and motion synthesis.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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