VideoHandles: Editing 3D Object Compositions in Videos Using Video Generative Priors
This addresses a gap in video editing methods for 3D object composition changes, which is incremental as it builds on prior generative priors but extends them to videos.
The paper tackles the problem of editing 3D object compositions in videos of static scenes with camera motion, achieving temporally consistent edits by lifting generative model features to a shared 3D reconstruction, editing it, and projecting back, outperforming state-of-the-art image editing baselines.
Generative methods for image and video editing use generative models as priors to perform edits despite incomplete information, such as changing the composition of 3D objects shown in a single image. Recent methods have shown promising composition editing results in the image setting, but in the video setting, editing methods have focused on editing object's appearance and motion, or camera motion, and as a result, methods to edit object composition in videos are still missing. We propose \name as a method for editing 3D object compositions in videos of static scenes with camera motion. Our approach allows editing the 3D position of a 3D object across all frames of a video in a temporally consistent manner. This is achieved by lifting intermediate features of a generative model to a 3D reconstruction that is shared between all frames, editing the reconstruction, and projecting the features on the edited reconstruction back to each frame. To the best of our knowledge, this is the first generative approach to edit object compositions in videos. Our approach is simple and training-free, while outperforming state-of-the-art image editing baselines.