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arXiv 2407.12781cs.CV

VD3D: 面向3D相机控制的大型视频扩散Transformer优化方法

VD3D: Taming Large Video Diffusion Transformers for 3D Camera Control

University of Toronto(多伦多大学);Vector Institute(矢量研究所);Snap Inc.(斯纳普公司);SFU(西蒙菲莎大学)
Sherwin Bahmani, Ivan Skorokhodov, Aliaksandr Siarohin, Willi Menapace, Guocheng Qian, Michael Vasilkovsky, Hsin-Ying Lee, Chaoyang Wang, Jiaxu Zou, Andrea Tagl… 展开作者

Sherwin Bahmani, Ivan Skorokhodov, Aliaksandr Siarohin, Willi Menapace, Guocheng Qian, Michael Vasilkovsky, Hsin-Ying Lee, Chaoyang Wang, Jiaxu Zou, Andrea Tagliasacchi, David B. Lindell, Sergey Tulyakov

AI总结:

针对现有基于Transformer的视频扩散模型缺乏相机控制能力的问题,提出融入基于Plücker坐标时空相机嵌入的类ControlNet条件机制,首次实现该类模型的3D相机控制,在RealEstate10K数据集上取得SOTA性能。

摘要:

现代文本生成视频模型能够根据文本描述生成连贯、具有照片级真实感的复杂视频。然而,现有大多数模型缺乏对相机运动的细粒度控制,而这对内容创作、视觉特效和3D视觉相关的下游应用至关重要。近期有新方法实现了相机姿态可控的视频生成,这些技术采用基于预训练U-Net的扩散模型,可显式解耦空间与时间生成过程。但目前尚无方法能够实现对新型基于Transformer的视频扩散模型的相机控制,这类模型会联合处理时空信息。为此,我们提出一种优化视频Transformer以实现3D相机控制的方法,采用类似ControlNet的条件机制,融入基于普吕克(Plücker)坐标的时空相机嵌入。该方法在RealEstate10K数据集上微调后,在可控视频生成任务中展现出最先进的性能。据我们所知,本研究是首个实现基于Transformer的视频扩散模型相机控制的工作。

英文摘要:

Modern text-to-video synthesis models demonstrate coherent, photorealistic generation of complex videos from a text description. However, most existing models lack fine-grained control over camera movement, which is critical for downstream applications related to content creation, visual effects, and 3D vision. Recently, new methods demonstrate the ability to generate videos with controllable camera poses these techniques leverage pre-trained U-Net-based diffusion models that explicitly disentangle spatial and temporal generation. Still, no existing approach enables camera control for new, transformer-based video diffusion models that process spatial and temporal information jointly. Here, we propose to tame video transformers for 3D camera control using a ControlNet-like conditioning mechanism that incorporates spatiotemporal camera embeddings based on Plücker coordinates. The approach demonstrates state-of-the-art performance for controllable video generation after fine-tuning on the RealEstate10K dataset. To the best of our knowledge, our work is the first to enable camera control for transformer-based video diffusion models.

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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