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---
license: cc-by-nc-4.0
task_categories:
- image-feature-extraction
language:
- en
tags:
- medical
- image
- biometry
- measurement
- x-ray
- cephalogram
pretty_name: cephalogram400
size_categories:
- n<1K
---
## About
This is a modified version of [data](https://figshare.com/s/37ec464af8e81ae6ebbf) for the paper:
[Fully Automatic System for Accurate Localisation and Analysis of Cephalometric Landmarks in Lateral Cephalograms](https://doi.org/10.1038/srep33581)
- We saved the original 2D `.bmp` images into pseudo 3D `.nii.gz` files in a manner that the original
2D sagittal slices can be extracted from the 3D NIfTI files correctly assuming the standard RAS+
orientation of `.nii.gz` files. A pseudo voxel size [0.1, 0.1, 0.1] is set in the NIfTI header,
according to the data description in the paper: "The image resolution was 1935 × 2400 pixels with
a pixel spacing of 0.1 mm."
- We change the landmarks coordinates to 3D, making it consistent with the new 3D NIfTI files.
- Figures of image and landmarks are added for visual inspection.
- Images (`.nii.gz` files), landmarks (`.json` files) and figures (`.png` files) are saved in
`Images`, `Landmarks`, and `Landmarks-fig` folders.
## Download from Huggingface
```bash
#!/bin/bash
pip install --upgrade huggingface-hub[cli]
huggingface-cli login --token $HF_TOKEN
```
```python
# python
from huggingface_hub import snapshot_download
snapshot_download(repo_id="YongchengYAO/Cephalogram400", repo_type='dataset', local_dir="/your/local/folder")
```
## Landmarks Labels
```python
landmarks_map = {
"P1": "sella",
"P2": "nasion",
"P3": "orbitale",
"P4": "porion",
"P5": "subspinale",
"P6": "supramentale",
"P7": "pogonion",
"P8": "menton",
"P9": "gnathion",
"P10": "gonion",
"P11": "incision inferius",
"P12": "incision superius",
"P13": "upper lip",
"P14": "lower lip",
"P15": "subnasale",
"P16": "soft tissue pogonion",
"P17": "posterior nasal spine",
"P18": "anterior nasal spine",
"P19": "articulare",
}
```
## License
This dataset is released under the `CC BY-NC 4.0` license. |