# CORAL Samples

This directory contains a small set of randomly selected sample files from the large-scale [CORAL](https://huggingface.co/datasets/yangzekang2000/CORAL) dataset, a whole-brain neuron tracing benchmark. These samples are provided as lightweight examples for quick inspection, visualization, and testing of different CORAL data types without downloading the full dataset.

## Directory Structure

```text
CORAL-samples/
├── cubes-5/          # 5 block-level task samples with 3D cubes, SWC annotations, and mask labels
├── slices-5/         # 5 whole-brain 2D slice image samples
└── neuron-swcs-3/    # 3 complete single-neuron SWC annotations
```

## Data Description

- `cubes-5/`
  - Contains 5 examples for CORAL block-level tasks.
  - Each example includes a 3D cube image block in `.tif` format.
  - Files with the same basename and the `.swc` extension are the corresponding neuron structure annotations.
  - Files with the same basename and the `_mask.tif` suffix are the corresponding mask annotations.

- `slices-5/`
  - Contains 5 randomly selected 2D slices from whole-brain image data in `.tif` format.

- `neuron-swcs-3/`
  - Contains 3 complete neuron annotations in `.swc` format.
  - These files provide examples of full-neuron morphology labels from CORAL.

## Recommended Viewers

- 3D cubes and SWC files: [neuTube](https://www.neutracing.com/) is recommended.
- 2D slice data: [Fiji](https://imagej.net/software/fiji/) is recommended.

## Data Source

These files are only a small sample subset of the CORAL dataset. The full dataset is available at:

https://huggingface.co/datasets/yangzekang2000/CORAL