PaDiM-Anomaly-Detection-Localization-master

Input

(Image from MVTec AD datasets https://www.mvtec.com/company/research/datasets/mvtec-ad/)

• Original image shape : (n, 3, 900, 900)
• Input shape : (n, 3, 224, 224)

Output

Left to right: input, ground truth, predicted head map, predicted mask, segmentation result

Usage

In order to get the feature vector of the normal product, it is necessary to prepare the file of the normal product.
By default, normal files are got from the train directory.
For the sample image, first download MVTec AD datasets and place bottle/train/good/*.png files to the train directory.

Automatically downloads the onnx and prototxt files on the first run. It is necessary to be connected to the Internet while downloading.

For the sample image,

$ python3 padim.py

If you want to specify the input image, put the image path after the --input option.
You can use --savepath option to change the name of the output file to save.

$ python3 padim.py --input IMAGE_PATH --savepath SAVE_IMAGE_PATH

The feature vectors created from files in the train directory are saved to the pickle file.
From the second time, by specifying the pickle file by --feat option, it can omit the calculation of the feature vector of the normal product.
The name of the pickle file created is the same as the name of a normal product file directory.

$ python3 padim.py --feat train.pkl

You can specify the directory of normal product files with the --train_dir option.

$ python3 padim.py --train_dir train

The ground truth files are got from the gt_masks directory by default.
The name of the ground truth file corresponds to the file with __mask after the name of the input file.
You can specify the directory of ground truth files with the --gt_dir option.

$ python3 padim.py --gt_dir gt_masks

For bottle in MVTec AD datasets.

$ python3 padim.py -i bottle/test/broken_large --train_dir bottle/train/good --gt_dir bottle/test/ground_truth/broken_large

By adding the --arch option, you can specify model type which is selected from "resnet18", "wide_resnet50_2".
(default is resnet18)

$ python3 padim.py --arch wide_resnet50_2

By adding the --aug option, you can process with augmentation.
(default is processing without augmentation)

$ python3 padim.py --aug

By adding the --aug_num option, you can specify amplification factor of data by augmentation. (default is 5)

$ python3 padim.py --aug --aug_num 5

Reference

PaDiM-Anomaly-Detection-Localization-master

Framework

Pytorch

Model Format

ONNX opset=11

Netron

resnet18.onnx.prototxt

wide_resnet50_2.onnx.prototxt