| --- |
| license: mit |
| language: |
| - en |
| size_categories: |
| - n<1K |
| --- |
| |
| ## Overview |
| [MOSIV](https://arxiv.org/abs/2603.06022) is a synthetic dataset designed for the task of **multi-object system identification from videos**, where the goal is to recover both the **4D geometry (time-varying 3D shape)** and the **physical properties** (e.g., stiffness, friction, plasticity) of multiple interacting objects directly from multi-view video observations. |
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| MOSIV features **contact-rich, multi-object interactions** with diverse materials and complex dynamics. Each sequence contains multiple objects undergoing collisions, deformation, and motion, along with ground-truth physical parameters and simulation data. |
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| The dataset is generated using [Genesis simulator](https://github.com/Genesis-Embodied-AI/Genesis) and supports tasks such as: |
| - Dynamic 3D / 4D reconstruction |
| - Physics-based system identification |
| - Multi-object interaction modeling |
| - Future state prediction and simulation |
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| ## Dataset Structure |
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| The dataset is organized hierarchically based on the number of objects and sequence IDs. |
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|
| ``` |
| MOSIV/ |
| ├── 2objs/ |
| │ ├── 01/ |
| │ │ ├── data/ |
| │ │ ├── masks/ |
| │ │ ├── masks_vis/ |
| │ │ ├── point_clouds/ |
| │ │ ├── videos/ |
| │ │ ├── all_data.json |
| │ │ ├── metadata.json |
| │ │ ├── points3d.ply |
| │ │ ├── transforms_train.json |
| │ │ ├── transforms_val.json |
| │ │ └── transforms_test.json |
| │ ├── 02/ |
| │ └── … |
| ├── 3objs/ |
| │ ├── 012/ |
| │ ├── 013/ |
| │ └── … |
| ``` |
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| Citing MOSIV |
| If you find this dataset useful in your work, please consider citing our paper: |
| ``` |
| @misc{liu2026mosivmultiobjectidentificationvideos, |
| title={MOSIV: Multi-Object System Identification from Videos}, |
| author={Chunjiang Liu and Xiaoyuan Wang and Qingran Lin and Albert Xiao and Haoyu Chen and Shizheng Wen and Hao Zhang and Lu Qi and Ming-Hsuan Yang and Laszlo A. Jeni and Min Xu and Yizhou Zhao}, |
| year={2026}, |
| eprint={2603.06022}, |
| archivePrefix={arXiv}, |
| primaryClass={cs.CV}, |
| url={https://arxiv.org/abs/2603.06022}, |
| } |
| ``` |
