things_eeg2_dataset 0.0.2

A simple and fast CLI for downloading, processing, and loading the THINGS-EEG2 dataset.

THINGS-EEG2 Raw Data Processing

This package provides tools for downloading, preprocessing raw THINGS-EEG2 EEG data, and generating image embeddings from various vision models.

[!WARNING] This repository builds upon the original data processing by Gifford et al (2022). Please check out their original code and the corresponding paper.

We are in no way associated with the authors. Nonetheless we hope, that this makes things easier (pun intended) to use.

Installation

git clone [e-mail]:ZEISS/things_eeg2_dataset.git
cd things_eeg2_dataset

uv sync
uv pip install --editable .
source .venv/bin/activate

things-eeg2 --help
things-eeg2 --install-completion

# Then restart your terminal.
# Example for zsh:
source ~/.zshrc

Usage

uv run things-eeg2 process \
    --project_dir /path/to/project_dir \
    --subjects 1 2 3 4 5 6 7 8 9 10 \


uv run things-eeg2 info \
    --project-dir /path/to/project_dir \
    --subject <EXAMPLE_SUBJECT \
    --session <EXAMPLE_SESSION> \
    --data-index <EXAMPLE_INDEX>

Data Structure

For understanding the data structure that is created by the CLI (and then needed to perform proper preprocessing and loading), please see paths.py. All code is configured to use the structure defined there as its ground truth.

Embedding Generation (embedding_processing/)

The package supports multiple state-of-the-art vision models for generating image embeddings:

Model	Embedder Class	Description
open-clip-vit-h-14	OpenClipViTH14Embedder	OpenCLIP ViT-H/14 (SDXL image encoder)
openai-clip-vit-l-14	OpenAIClipVitL14Embedder	OpenAI CLIP ViT-L/14
dinov2	DinoV2Embedder	DINOv2 with registers (self-supervised)
ip-adapter	IPAdapterEmbedder	IP-Adapter Plus projections

Each embedder generates:

• Pooled embeddings: Single vector per image (e.g., (1024,) for ViT-H-14)
• Full sequence embeddings: All tokens (e.g., (257, 1280) for ViT-H-14)
• Text embeddings: Corresponding text features from image captions

Output Files:

embeddings/
├── ViT-H-14_features_training.pt           # Pooled embeddings
├── ViT-H-14_features_training_full.pt      # Full token sequences
├── ViT-H-14_features_test.pt
└── ViT-H-14_features_test_full.pt

References

• Original THINGS-EEG2 paper and code
• Implementation based on: https://www.sciencedirect.com/science/article/pii/S1053811922008758

Using the dataloader

from things_eeg2_dataset.dataloader import ThingsEEGDataset

dataset = ThingsEEGDataset(
    image_model="ViT-H-14",
    data_path="/path/to/processed_data",
    img_directory_training="/path/to/images/train",
    img_directory_test="/path/to/images/test",
    embeddings_dir="/path/to/embeddings",
    train=True,
    time_window=(0.0, 1.0),
)

See things_eeg2_dataloader/README.md for detailed usage.

Citation

We are happy users of the THINGS-EEG2 dataset, but not associated with the original authors. If you use this code, please cite the THINGS-EEG2 paper:

Gifford, A. T., Lahner, B., Saba-Sadiya, S., Vilas, M. G., Lascelles, A., Oliva, A., ... & Cichy, R. M. (2022). The THINGS-EEG2 dataset. Scientific Data.

License

This project follows the original THINGS-EEG2 license terms.