1 code implementation • 12 Aug 2020 • David Dehaene, Pierre Eline
Although unsupervised generative modeling of an image dataset using a Variational AutoEncoder (VAE) has been used to detect anomalous images, or anomalous regions in images, recent works have shown that this method often identifies images or regions that do not concur with human perception, even questioning the usability of generative models for robust anomaly detection.
Ranked #18 on Anomaly Detection on VisA
1 code implementation • ICLR 2020 • David Dehaene, Oriel Frigo, Sébastien Combrexelle, Pierre Eline
Indeed, an autoencoder trained on normal data is expected to only be able to reconstruct normal features of the data, allowing the segmentation of anomalous pixels in an image via a simple comparison between the image and its autoencoder reconstruction.
Ranked #81 on Anomaly Detection on MVTec AD (Segmentation AUROC metric)