A library for benchmarking, developing and deploying deep learning anomaly detection algorithms

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Key Features • Getting Started • Docs • License

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Introduction

Anomalib is a deep learning library that aims to collect state-of-the-art anomaly detection algorithms for benchmarking on both public and private datasets. Anomalib provides several ready-to-use implementations of anomaly detection algorithms described in the recent literature, as well as a set of tools that facilitate the development and implementation of custom models. The library has a strong focus on image-based anomaly detection, where the goal of the algorithm is to identify anomalous images, or anomalous pixel regions within images in a dataset. Anomalib is constantly updated with new algorithms and training/inference extensions, so keep checking!

Key features:

• The largest public collection of ready-to-use deep learning anomaly detection algorithms and benchmark datasets.
• PyTorch Lightning based model implementations to reduce boilerplate code and limit the implementation efforts to the bare essentials.
• All models can be exported to OpenVINO Intermediate Representation (IR) for accelerated inference on intel hardware.
• A set of inference tools for quick and easy deployment of the standard or custom anomaly detection models.

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Getting Started

To get an overview of all the devices where anomalib as been tested thoroughly, look at the Supported Hardware section in the documentation.

PyPI Install

You can get started with anomalib by just using pip.

pip install anomalib

NOTE: Due to ongoing fast pace of development, we encourage you to use editable install until we release v0.2.5.

Local Install

It is highly recommended to use virtual environment when installing anomalib. For instance, with anaconda, anomalib could be installed as,

yes | conda create -n anomalib_env python=3.8
conda activate anomalib_env
git clone https://github.com/openvinotoolkit/anomalib.git
cd anomalib
pip install -e .

Training

By default python tools/train.py runs PADIM model on leather category from the MVTec AD (CC BY-NC-SA 4.0) dataset.

python tools/train.py    # Train PADIM on MVTec AD leather

Training a model on a specific dataset and category requires further configuration. Each model has its own configuration file, config.yaml , which contains data, model and training configurable parameters. To train a specific model on a specific dataset and category, the config file is to be provided:

python tools/train.py --model_config_path <path/to/model/config.yaml>

For example, to train PADIM you can use

python tools/train.py --model_config_path anomalib/models/padim/config.yaml

Alternatively, a model name could also be provided as an argument, where the scripts automatically finds the corresponding config file.

python tools/train.py --model padim

where the currently available models are:

• CFlow
• PatchCore
• PADIM
• STFPM
• DFM
• DFKDE
• GANomaly

Custom Dataset

It is also possible to train on a custom folder dataset. To do so, data section in config.yaml is to be modified as follows:

dataset:
  name: <name-of-the-dataset>
  format: folder
  path: <path/to/folder/dataset>
  normal: normal # name of the folder containing normal images.
  abnormal: abnormal # name of the folder containing abnormal images.
  task: segmentation # classification or segmentation
  mask: <path/to/mask/annotations> #optional
  extensions: null
  split_ratio: 0.2  # ratio of the normal images that will be used to create a test split
  seed: 0
  image_size: 256
  train_batch_size: 32
  test_batch_size: 32
  num_workers: 8
  transform_config: null
  create_validation_set: true
  tiling:
    apply: false
    tile_size: null
    stride: null
    remove_border_count: 0
    use_random_tiling: False
    random_tile_count: 16

Inference

Anomalib contains several tools that can be used to perform inference with a trained model. The script in tools/inference contains an example of how the inference tools can be used to generate a prediction for an input image.

If the specified weight path points to a PyTorch Lightning checkpoint file (.ckpt), inference will run in PyTorch. If the path points to an ONNX graph (.onnx) or OpenVINO IR (.bin or .xml), inference will run in OpenVINO.

The following command can be used to run inference from the command line:

python tools/inference.py \
    --model_config_path <path/to/model/config.yaml> \
    --weight_path <path/to/weight/file> \
    --image_path <path/to/image>

As a quick example:

python tools/inference.py \
    --model_config_path anomalib/models/padim/config.yaml \
    --weight_path results/padim/mvtec/bottle/weights/model.ckpt \
    --image_path datasets/MVTec/bottle/test/broken_large/000.png

If you want to run OpenVINO model, ensure that openvino apply is set to True in the respective model config.yaml.

optimization:
  openvino:
    apply: true

Example OpenVINO Inference:

python tools/inference.py \
    --model_config_path  \
    anomalib/models/padim/config.yaml  \
    --weight_path  \
    results/padim/mvtec/bottle/compressed/compressed_model.xml  \
    --image_path  \
    datasets/MVTec/bottle/test/broken_large/000.png  \
    --meta_data  \
    results/padim/mvtec/bottle/compressed/meta_data.json

Ensure that you provide path to meta_data.json if you want the normalization to be applied correctly.

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Datasets

anomalib supports MVTec AD (CC BY-NC-SA 4.0) and BeanTech (CC-BY-SA) for benchmarking and folder for custom dataset training/inference.

MVTec AD Dataset

MVTec AD dataset is one of the main benchmarks for anomaly detection, and is released under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0).

Image-Level AUC

Model		Avg	Carpet	Grid	Leather	Tile	Wood	Bottle	Cable	Capsule	Hazelnut	Metal Nut	Pill	Screw	Toothbrush	Transistor	Zipper
PatchCore	Wide ResNet-50	0.980	0.984	0.959	1.000	1.000	0.989	1.000	0.990	0.982	1.000	0.994	0.924	0.960	0.933	1.000	0.982
PatchCore	ResNet-18	0.973	0.970	0.947	1.000	0.997	0.997	1.000	0.986	0.965	1.000	0.991	0.916	0.943	0.931	0.996	0.953
CFlow	Wide ResNet-50	0.962	0.986	0.962	1.0	0.999	0.993	1.0	0.893	0.945	1.0	0.995	0.924	0.908	0.897	0.943	0.984
PaDiM	Wide ResNet-50	0.950	0.995	0.942	1.0	0.974	0.993	0.999	0.878	0.927	0.964	0.989	0.939	0.845	0.942	0.976	0.882
PaDiM	ResNet-18	0.891	0.945	0.857	0.982	0.950	0.976	0.994	0.844	0.901	0.750	0.961	0.863	0.759	0.889	0.920	0.780
STFPM	Wide ResNet-50	0.876	0.957	0.977	0.981	0.976	0.939	0.987	0.878	0.732	0.995	0.973	0.652	0.825	0.5	0.875	0.899
STFPM	ResNet-18	0.893	0.954	0.982	0.989	0.949	0.961	0.979	0.838	0.759	0.999	0.956	0.705	0.835	0.997	0.853	0.645
DFM	Wide ResNet-50	0.891	0.978	0.540	0.979	0.977	0.974	0.990	0.891	0.931	0.947	0.839	0.809	0.700	0.911	0.915	0.981
DFM	ResNet-18	0.894	0.864	0.558	0.945	0.984	0.946	0.994	0.913	0.871	0.979	0.941	0.838	0.761	0.95	0.911	0.949
DFKDE	Wide ResNet-50	0.774	0.708	0.422	0.905	0.959	0.903	0.936	0.746	0.853	0.736	0.687	0.749	0.574	0.697	0.843	0.892
DFKDE	ResNet-18	0.762	0.646	0.577	0.669	0.965	0.863	0.951	0.751	0.698	0.806	0.729	0.607	0.694	0.767	0.839	0.866

Pixel-Level AUC

Model		Avg	Carpet	Grid	Leather	Tile	Wood	Bottle	Cable	Capsule	Hazelnut	Metal Nut	Pill	Screw	Toothbrush	Transistor	Zipper
PatchCore	Wide ResNet-50	0.980	0.988	0.968	0.991	0.961	0.934	0.984	0.988	0.988	0.987	0.989	0.980	0.989	0.988	0.981	0.983
PatchCore	ResNet-18	0.976	0.986	0.955	0.990	0.943	0.933	0.981	0.984	0.986	0.986	0.986	0.974	0.991	0.988	0.974	0.983
CFlow	Wide ResNet-50	0.971	0.986	0.968	0.993	0.968	0.924	0.981	0.955	0.988	0.990	0.982	0.983	0.979	0.985	0.897	0.980
PaDiM	Wide ResNet-50	0.979	0.991	0.970	0.993	0.955	0.957	0.985	0.970	0.988	0.985	0.982	0.966	0.988	0.991	0.976	0.986
PaDiM	ResNet-18	0.968	0.984	0.918	0.994	0.934	0.947	0.983	0.965	0.984	0.978	0.970	0.957	0.978	0.988	0.968	0.979
STFPM	Wide ResNet-50	0.903	0.987	0.989	0.980	0.966	0.956	0.966	0.913	0.956	0.974	0.961	0.946	0.988	0.178	0.807	0.980
STFPM	ResNet-18	0.951	0.986	0.988	0.991	0.946	0.949	0.971	0.898	0.962	0.981	0.942	0.878	0.983	0.983	0.838	0.972

Image F1 Score

Model		Avg	Carpet	Grid	Leather	Tile	Wood	Bottle	Cable	Capsule	Hazelnut	Metal Nut	Pill	Screw	Toothbrush	Transistor	Zipper
PatchCore	Wide ResNet-50	0.976	0.971	0.974	1.000	1.000	0.967	1.000	0.968	0.982	1.000	0.984	0.940	0.943	0.938	1.000	0.979
PatchCore	ResNet-18	0.970	0.949	0.946	1.000	0.98	0.992	1.000	0.978	0.969	1.000	0.989	0.940	0.932	0.935	0.974	0.967
CFlow	Wide ResNet-50	0.944	0.972	0.932	1.0	0.988	0.967	1.0	0.832	0.939	1.0	0.979	0.924	0.971	0.870	0.818	0.967
PaDiM	Wide ResNet-50	0.951	0.989	0.930	1.0	0.960	0.983	0.992	0.856	0.982	0.937	0.978	0.946	0.895	0.952	0.914	0.947
PaDiM	ResNet-18	0.916	0.930	0.893	0.984	0.934	0.952	0.976	0.858	0.960	0.836	0.974	0.932	0.879	0.923	0.796	0.915
STFPM	Wide ResNet-50	0.926	0.973	0.973	0.974	0.965	0.929	0.976	0.853	0.920	0.972	0.974	0.922	0.884	0.833	0.815	0.931
STFPM	ResNet-18	0.932	0.961	0.982	0.989	0.930	0.951	0.984	0.819	0.918	0.993	0.973	0.918	0.887	0.984	0.790	0.908
DFM	Wide ResNet-50	0.918	0.960	0.844	0.990	0.970	0.959	0.976	0.848	0.944	0.913	0.912	0.919	0.859	0.893	0.815	0.961
DFM	ResNet-18	0.919	0.895	0.844	0.926	0.971	0.948	0.977	0.874	0.935	0.957	0.958	0.921	0.874	0.933	0.833	0.943
DFKDE	Wide ResNet-50	0.875	0.907	0.844	0.905	0.945	0.914	0.946	0.790	0.914	0.817	0.894	0.922	0.855	0.845	0.722	0.910
DFKDE	ResNet-18	0.872	0.864	0.844	0.854	0.960	0.898	0.942	0.793	0.908	0.827	0.894	0.916	0.859	0.853	0.756	0.916

Reference

If you use this library and love it, use this to cite it 🤗

@misc{anomalib,
      title={Anomalib: A Deep Learning Library for Anomaly Detection},
      author={Samet Akcay and
              Dick Ameln and
              Ashwin Vaidya and
              Barath Lakshmanan and
              Nilesh Ahuja and
              Utku Genc},
      year={2022},
      eprint={2202.08341},
      archivePrefix={arXiv},
      primaryClass={cs.CV}
}