แนวคิดหลัก
Phy124 is a novel, fast, physics-driven framework for generating 4D content from a single image, ensuring the generated 4D content adheres to natural physical laws.
บทคัดย่อ
The paper introduces Phy124, a novel, fast, physics-driven framework for generating 4D content from a single image. The key innovations are:
- Integration of physical simulation (Material Point Method) directly into the 4D generation process, ensuring the generated 4D content adheres to physical laws.
- Introduction of external forces to facilitate the generation of controllable 4D content, allowing precise manipulation of dynamics such as movement speed and direction.
- Elimination of the time-consuming score distillation sampling phase, significantly reducing the time required for 4D content generation.
The framework consists of two stages:
- 3D Gaussians Generation: A static 3D Gaussian representation is generated from a single image using a diffusion-based 3D generation method.
- 4D Dynamics Generation: The static 3D Gaussians are treated as particles in a continuum, and physical simulation (MPM) is applied to generate the 4D dynamics. External forces can be used to control the dynamics.
Extensive experiments demonstrate that Phy124 generates high-fidelity 4D content that conforms to physical laws, with significantly reduced inference times compared to state-of-the-art methods.
สถิติ
The paper reports the following key metrics:
CLIP-T-f: 0.9962
CLIP-T-r: 0.9948
CLIP-T-b: 0.9960
CLIP-T-l: 0.9963
Generation time: 23.89s + 15.67s (3D generation + 4D dynamics generation)
คำพูด
"Phy124 is a novel, fast, physics-driven framework for generating 4D content from a single image, ensuring the generated 4D content adheres to natural physical laws."
"By integrating physical simulation directly into the 4D generation process, Phy124 ensures that the generated 4D content adheres to physical priors."
"To achieve controllable 4D generation, Phy124 incorporates external forces, allowing precise manipulation of the dynamics, such as movement speed and direction, to align with user intentions."