Comp4D: Compositional 4D Scene Generation

The advancements in diffusion models for 2D and 3D content creation have sparked a surge of interest in generating 4D content. However, the scarcity of 3D scene datasets constrains current methodologies to primarily object-centric generation. To overcome this limitation, we present Comp4D, a novel framework for text-to-compositional 4D scene generation. Unlike conventional methods that generate a singular 4D representation of the entire scene, Comp4D innovatively employs a decompose-then-recompose strategy, constructing each 4D component within the scene separately.The framework first decomposes a textual input prompt into multiple object components and delineates their moving trajectories. After initializing the static 3D objects, we construct the compositional 4D scene by accurately positioning these objects along their designated paths. To refine the scene and motion, our method proposes a novel compositional score distillation technique involving trajectory-guided and object-centric sampling, utilizing pre-trained diffusion models across text-to-image, text-to-video, and text-to-3D domains for optimization. Extensive experiments demonstrate our superior 4D content creation capability compared to prior arts, showcasing superior visual quality, motion fidelity, and enhanced object interactions.