DeepAI AI Chat
Log In Sign Up

Combining GANs and AutoEncoders for Efficient Anomaly Detection

11/16/2020
by   Fabio Carrara, et al.
Consiglio Nazionale delle Ricerche
118

In this work, we propose CBiGAN – a novel method for anomaly detection in images, where a consistency constraint is introduced as a regularization term in both the encoder and decoder of a BiGAN. Our model exhibits fairly good modeling power and reconstruction consistency capability. We evaluate the proposed method on MVTec AD – a real-world benchmark for unsupervised anomaly detection on high-resolution images – and compare against standard baselines and state-of-the-art approaches. Experiments show that the proposed method improves the performance of BiGAN formulations by a large margin and performs comparably to expensive state-of-the-art iterative methods while reducing the computational cost. We also observe that our model is particularly effective in texture-type anomaly detection, as it sets a new state of the art in this category. Our code is available at https://github.com/fabiocarrara/cbigan-ad/.

READ FULL TEXT

page 1

page 5

page 6

03/31/2023

Unsupervised Anomaly Detection and Localization of Machine Audio: A GAN-based Approach

Automatic detection of machine anomaly remains challenging for machine l...
03/29/2022

AnoDFDNet: A Deep Feature Difference Network for Anomaly Detection

This paper proposed a novel anomaly detection (AD) approach of High-spee...
05/31/2021

Semi-orthogonal Embedding for Efficient Unsupervised Anomaly Segmentation

We present the efficiency of semi-orthogonal embedding for unsupervised ...
09/06/2023

Reasonable Anomaly Detection in Long Sequences

Video anomaly detection is a challenging task due to the lack in approac...
08/13/2023

Target before Shooting: Accurate Anomaly Detection and Localization under One Millisecond via Cascade Patch Retrieval

In this work, by re-examining the "matching" nature of Anomaly Detection...
03/01/2022

Omni-frequency Channel-selection Representations for Unsupervised Anomaly Detection

Density-based and classification-based methods have ruled unsupervised a...

Code Repositories

cbigan-ad

Code to reproduce 'Combining GANs and AutoEncodersfor efficient anomaly detection'


view repo