Manifold4D: Denoising on Point Cloud Rendered Manifolds for Video Re-shooting
Manifold4D proposes a video re-shooting method that injects explicit 4D geometry directly into the starting noise of flow matching. This avoids a 'trust dilemma' by using the point cloud render only once as an initial geometric prior, allowing the model to focus on source video appearance during subsequent denoising. Experiments show it achieves superior camera control accuracy and maintains high visual quality.