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arXiv 2603.08028cs.CVcs.MM

通过文本到骨骼级联实现可控的复杂人类运动视频生成

Controllable Complex Human Motion Video Generation via Text-to-Skeleton Cascades

Department of Computer Science and Software Engineering, The University of Western Australia(计算机科学与软件工程系,西澳大学);Munich Center for Machine Learning (MCML) and Technical University of Munich (TUM)(慕尼黑机器学习中心(MCML)和技术大学慕尼黑(TUM));School of Information Technology, Murdoch University(信息科技学院,墨尔本大学);Department of Electrical, Electronics and Computer Engineering, The University of Western Australia(电子、电子与计算机工程系,西澳大学)

Ashkan Taghipour, Morteza Ghahremani, Zinuo Li, Hamid Laga, Farid Boussaid, Mohammed Bennamoun

AI总结:

本文提出通过文本到骨骼级联框架生成可控复杂人类运动视频,解决文本条件模糊和姿态控制成本高的问题,引入合成数据集并展示模型在多个指标上的优越性能。

摘要:

生成包含翻转、轮翻和武术等复杂人类动作的视频仍对当前视频扩散模型构成挑战。仅基于文本的条件控制在细粒度动作控制上时间上模糊,而显式基于姿态的控制虽然有效,但需要用户提供完整的骨骼序列,这在生成长时间和动态动作时成本较高。我们提出一个两阶段级联框架,以解决这两个限制。首先,一个自回归的文本到骨骼模型通过预测每个关节来从自然语言描述中生成2D姿态序列,该设计捕捉了复杂动作所需的长期时间依赖性和关节间协调性。其次,一个基于姿态的视频扩散模型从参考图像和生成的骨骼序列中合成视频。它采用DINO-ALF(自适应层融合),一个多级参考编码器,能够在大姿态变化和自我遮挡下保留外观和服装细节。为了应对复杂人类运动视频生成领域缺乏公开可用数据集的问题,我们引入了一个基于Blender的合成数据集,包含2000个视频,其中多样化的角色执行了杂技和特技动作。该数据集提供了对外观、动作和环境的完全控制。它填补了重要空白,因为现有基准显著低估了杂技动作,而网络收集的数据集则引发版权和隐私问题。在我们的合成数据集和Motion-X Fitness基准上的实验表明,我们的文本到骨骼模型在FID、R-precision和动作多样性上优于先前方法。我们的姿态到视频模型在VBench指标上也实现了所有比较方法中在时间一致性、动作平滑性和主体保留方面的最佳结果。

英文摘要:

Generating videos of complex human motions such as flips, cartwheels, and martial arts remains challenging for current video diffusion models. Text-only conditioning is temporally ambiguous for fine-grained motion control, while explicit pose-based controls, though effective, require users to provide complete skeleton sequences that are costly to produce for long and dynamic actions. We propose a two-stage cascaded framework that addresses both limitations. First, an autoregressive text-to-skeleton model generates 2D pose sequences from natural language descriptions by predicting each joint conditioned on previously generated poses. This design captures long-range temporal dependencies and inter-joint coordination required for complex motions. Second, a pose-conditioned video diffusion model synthesizes videos from a reference image and the generated skeleton sequence. It employs DINO-ALF (Adaptive Layer Fusion), a multi-level reference encoder that preserves appearance and clothing details under large pose changes and self-occlusions. To address the lack of publicly available datasets for complex human motion video generation, we introduce a Blender-based synthetic dataset containing 2,000 videos with diverse characters performing acrobatic and stunt-like motions. The dataset provides full control over appearance, motion, and environment. It fills an important gap because existing benchmarks significantly under-represent acrobatic motions while web-collected datasets raise copyright and privacy concerns. Experiments on our synthetic dataset and the Motion-X Fitness benchmark show that our text-to-skeleton model outperforms prior methods on FID, R-precision, and motion diversity. Our pose-to-video model also achieves the best results among all compared methods on VBench metrics for temporal consistency, motion smoothness, and subject preservation.

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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