dataset is built from online repositories:
- with_incorrect_mask: MaskedFace-Net https://github.com/cabani/MaskedFace-Net
- with_mask: MaskedFace-Net https://github.com/cabani/MaskedFace-Net
- without_mask: Flickr-Faces-HQ Dataset (FFHQ) https://github.com/NVlabs/ffhq-dataset
testset is built from manual queries on principal search engines