aleju/imgaug

Supports augmentation of diverse annotation types—heatmaps, segmentation maps, keypoints, bounding boxes, and polygons—with automatic coordinate alignment so transformations apply consistently across all data types. Provides 50+ geometric and photometric operations (affine, perspective, contrast, noise, blur) optimized for batch processing, with composable pipelines that apply random augmentations in configurable orders. Integrates seamlessly with numpy arrays and major ML frameworks through a NumPy-based architecture, enabling deterministic augmentation through seed control.

14,732 stars and 824,819 monthly downloads. Used by 11 other packages. No commits in the last 6 months. Available on PyPI.