batchgenerators
Data augmentation toolkit
Decision gist · record as of 2026-08-14
Yes. batchgenerators is actively maintained, has no known vulnerabilities, and installs with low friction. It is well-suited for medical image analysis and deep learning projects that need 2D/3D augmentation with per-sample control and multithreaded execution. The Apache 2.0 license is permissive. Use it if you need specialized augmentation for medical or scientific imaging.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Windows requires guarding code with `if __name__ == '__main__'` and calling `multiprocessing.freeze_support()` due to multiprocessing differences; Linux has no such requirement.
- Low install friction with a pure Python wheel and stable maintenance.
- Last release 59 days ago, active repository with 1172 stars, and no known vulnerabilities.
License · maintenance · safety
permissive license (permissive) — Apache License 2.0 is permissive; you may use, modify, and distribute batchgenerators freely in commercial and private projects, provided you include the license and attribute the original authors.
last release 2026-06-16 (59 days) · last repo commit 2026-06-16 · 1,172 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 149,364 downloads/mo, #10,994 on PyPI
Alternatives
Verify before relying
pip install batchgenerators
from batchgenerators.transforms.color_transforms import ContrastAugmentationTransform
from batchgenerators.dataloading.multi_threaded_augmenter import MultiThreadedAugmenter
# Stack transforms and pass to MultiThreadedAugmenter for multithreaded augmentation- Whether anatomy-informed and misalignment augmentations (added in 0.23.1 and 0.23.2) are production-ready or still experimental.
- Specific Python version compatibility (requires_python is unspecified in metadata).
- Performance characteristics and memory overhead when processing large 3D datasets.
What it is and what it does
batchgenerators is a data augmentation framework developed by the Medical Image Computing division at DKFZ for preparing training data in deep learning pipelines. It specializes in augmentations that work uniformly on both 2D and 3D image data—a capability the documentation notes was missing in most competing frameworks. The package provides spatial transforms (mirroring, elastic deformation, rotation, scaling, resampling), color adjustments (brightness, contrast, gamma), noise injection (Gaussian, Rician), and cropping operations, plus specialized augmentations for medical imaging such as anatomy-informed deformations and multi-modal misalignment simulation.
The typical workflow involves subclassing a DataLoaderBase, implementing a generate_train_batch method to stack transforms using the Compose utility, and then feeding the result into MultiThreadedAugmenter for parallel augmentation across multiple processes. Data flows through the pipeline as a simple Python dictionary with required 'data' and optional 'seg' keys; spatial transforms automatically apply to segmentation masks when present. The package depends on numpy, scipy, scikit-image, scikit-learn, pillow, and pandas for its core operations.
Use it for
- Augment 3D medical imaging datasets for segmentation tasks while ensuring spatial transforms apply to both images and segmentation masks.
- Build training pipelines that apply per-sample augmentation decisions with configurable probabilities rather than batch-wide decisions.
- Preprocess multi-modal medical images with controlled misalignments between channels to improve model robustness.
- Combine spatial and color augmentations in a composable pipeline and execute them in parallel across multiple worker processes.
- Simulate soft-tissue deformations in medical imaging workflows using anatomy-informed augmentation for realistic training data.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
batchgenerators is actively maintained, has no known vulnerabilities, and installs with low friction. It is well-suited for medical image analysis and deep learning projects that need 2D/3D augmentation with per-sample control and multithreaded execution. The Apache 2.0 license is permissive. Use it if you need specialized augmentation for medical or scientific imaging.
Install
batchgenerators on PyPI
Before you install
Low install friction with a pure Python wheel and stable maintenance. Last release 59 days ago, active repository with 1172 stars, and no known vulnerabilities.
Windows requires guarding code with `if __name__ == '__main__'` and calling `multiprocessing.freeze_support()` due to multiprocessing differences; Linux has no such requirement.
License in practice
Apache License 2.0 is permissive; you may use, modify, and distribute batchgenerators freely in commercial and private projects, provided you include the license and attribute the original authors.
Quickstart
pip install batchgenerators
from batchgenerators.transforms.color_transforms import ContrastAugmentationTransform
from batchgenerators.dataloading.multi_threaded_augmenter import MultiThreadedAugmenter
# Stack transforms and pass to MultiThreadedAugmenter for multithreaded augmentationVerify before relying
- Whether anatomy-informed and misalignment augmentations (added in 0.23.1 and 0.23.2) are production-ready or still experimental.
- Specific Python version compatibility (requires_python is unspecified in metadata).
- Performance characteristics and memory overhead when processing large 3D datasets.
Package facts
| License | permissive license permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 9 packagespillownumpyscipyscikit-imagescikit-learnfuturepandasunittest2threadpoolctl |
| Maintenance | Actively maintained 59 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 149,364 / month, #10,994 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
Evidence: batchgenerators-0.25.3-py3-none-any.whl
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See also albumentations · batchgeneratorsv2 · TotalSegmentator · torchio · imgaug · ttach · torch-audiomentations · cellpose · edt · opensimplex