> 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/90o-rotate-augmentation.md).
# 90º回転拡張
画像を90度または180度ランダムに回転します。これにより、モデルがカメラの向きの影響を受けにくくなります。
* 時計回り: 画像を90度時計回りに回転します。
* 反時計回り: 画像を90度反時計回りに回転します。
* 上下反転: 画像を180度回転します（上下逆さまにします）。
## 例
元の画像
90º Augmentation を時計回りに適用
90º Augmentation を反時計回りに適用
## Learn More
* [Random Rotate Data Augmentation を実装する理由と方法](https://blog.roboflow.com/why-and-how-to-implement-random-rotate-data-augmentation/)
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