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license: apache-2.0
language:
- en
tags:
- motion-inbetweening
- keypose-extraction
- character-animation
- adaptive-interpolation-synthesis
---
# Motion In-Betweening Dataset
## Dataset Description
This dataset contains character animation sequences from production. It is used for training and evaluating the motion in-betweening method presented in:
https://arxiv.org/abs/2605.02742
> Raël et al., "Adaptive Interpolation-Synthesis for Motion In-Betweening on Keyframe-Based Animation",
> SIGGRAPH 2026 Conference Papers (2026)
## Dataset Summary
The dataset provides character animation at 24 fps for a single production rig, with each frame represented as a D=596-dimensional vector of rig controller values. It is split into two subsets:
- **`in_house_dataset:`** 8.5 hours of internal production sequences, split 95% for training and 5% for held-out evaluation (`test_held_out_algorithmic` and `test_held_out_random` splits).
- **`prod_test_dataset:`** 5 minutes of production data with ground-truth blocking keyposes, used for the `test_production` evaluation split.
For each subset, the dataset provides the processed per-frame controller-value sequences (`vectorized_controller_values/`) along with the corresponding block keypose annotations (`vectorized_block_keyframes/`). For `in_house_dataset`, the block keyposes are determined by the Domain-Based Algorithm; for `prod_test_dataset`, they are ground-truth animator block keyposes.
## Usage
See the [GitHub repository](https://github.com/animaj-lab/mib-ais)
## Data Format
The repository is organized as follows:
```
root_directory/
├── in_house_dataset
│ ├── ranges.csv
│ ├── split_types.csv
│ ├── vectorized_block_keyframes
│ │ ├── test.h5
│ │ └── train.h5
│ └── vectorized_controller_values
│ └── ef25a8e5ecd2fa86420741e5646cd785aa025c44c06f4118aab77f558c8f6981
│ ├── test.h5
│ └── train.h5
└── prod_test_dataset
├── ranges.csv
├── split_types.csv
├── vectorized_block_keyframes
│ ├── test.h5
│ └── train.h5
└── vectorized_controller_values
└── ef25a8e5ecd2fa86420741e5646cd785aa025c44c06f4118aab77f558c8f6981
├── test.h5
└── train.h5
```
## License
Apache 2.0
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