dc.description.abstracten |
With the rise of Industry 4.0, much attention is attracted to the field of automated vi-
sual inspection. Automation of the quality check in the production environment can
reduce labor costs significantly, therefore, especially with the rise of deep learning-
based algorithms, anomaly detection became one of the most researched topics in a
machine learning community. Visual anomaly detection aims to detect inconsisten-
cies in image data, which can be classified as anomalies. This can be used in many
areas apart from manufacturing, including the detection of abnormal areas in med-
ical imaging, surface inspection, or photo editing. This task becomes quite common
when we have access only to normal samples as anomalies are rare compared to
normal data and are usually hard to collect. Therefore, visual anomaly detection is
usually solved in an unsupervised setting, where we take advantage of only normal
data. One of the approaches to solving visual anomaly detection is image reconstruc-
tion. Recently, diffusion models became state-of-the-art in the image generation task,
being especially prominent in terms of image quality and diversity of the generated
samples. In this study, we leverage diffusion models to the task of visual anomaly
detection in a manufacturing setting, show its strengths and weaknesses as well as
compare it with other existing methods and provide extensive benchmarks on the
subject. |
uk |