> For the complete documentation index, see [llms.txt](https://docs.roboflow.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.roboflow.com/roboflow/roboflow-jp/datasets/dataset-versions/image-augmentation/augmentation-types/shear-augmentation.md).

# シアー拡張

画像を水平方向または垂直方向の軸に沿ってランダムに歪ませます。これにより視点のばらつきが追加され、カメラや被写体のピッチおよびヨーに対してモデルがより頑健になります。

* Horizontal: 画像が x 軸に沿ってランダムにせん断される最大量を選択します。
* Vertical: 画像が y 軸に沿ってランダムにせん断される最大量を選択します。

## 例

<figure><img src="/files/b28b4f64a40941f3068ccf4a605d2b34d56af56e" alt=""><figcaption><p>元の画像</p></figcaption></figure>

<figure><img src="/files/6dfa257378b980f83e725faa239bbf5dd688ac37" alt=""><figcaption><p>X軸10°およびY軸10°のせん断を用いたShear Augmentation</p></figcaption></figure>


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