| # PhysDreamer Reference Assets |
|
|
| Source: [YunjinZhang/PhysDreamer](https://huggingface.co/datasets/YunjinZhang/PhysDreamer) |
| Paper: [PhysDreamer: Physics-Based Interaction with 3D Objects via Video Generation](https://arxiv.org/abs/2406.04338) |
| Licence: MIT |
|
|
| ## Contents |
|
|
| ### `scenes/` |
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| Four real-world scenes with RGB-D observations and optimized 3D Gaussians: |
|
|
| | Scene | Description | |
| |---|---| |
| | `alocasia` | Potted plant (flexible leaves) | |
| | `carnation` | Carnation flower (bendable stem) | |
| | `telephone` | Telephone handset (rigid + soft cord) | |
| | `hat` | Woven hat (flexible brim) | |
|
|
| Each scene directory contains: |
| - `point_cloud/iteration_*/point_cloud.ply` — 3DGS model (use as `--gaussians` input to `squishy-build`) |
| - `images/` — training RGB frames |
| - `cameras.json` — camera extrinsics and intrinsics |
|
|
| ### `models/` |
|
|
| Optimized velocity fields and material fields for each scene: |
| - `velocity_field.pt` — PhysDreamer learned velocity field (per-particle trajectory prior) |
| - `material_field.pt` — optimized material parameters {E, nu, rho} per spatial region |
|
|
| ## Usage with squishy |
|
|
| ```python |
| # Use as gaussians input for squishy-build: |
| # squishy-build --gaussians reference/physdreamer/scenes/carnation/point_cloud/ \ |
| # --mesh carnation_mesh.obj --name carnation |
| |
| # Use material field as initial parameter estimate for system ID: |
| from squishy.train.system_id import run_system_id_physics3d |
| # load material_field.pt to initialize E_init, nu_init |
| ``` |
|
|
| ## Citation |
|
|
| ```bibtex |
| @article{zhang2024physdreamer, |
| title={PhysDreamer: Physics-Based Interaction with 3D Objects via Video Generation}, |
| author={Tianyuan Zhang and Hong-Xing Yu and Rundi Wu and |
| Brandon Y. Feng and Changxi Zheng and Noah Snavely and Jiajun Wu and William T. Freeman}, |
| journal={arXiv}, |
| year={2024} |
| } |
| ``` |
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|
