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MULDE: Multiscale Log-Density Estimation via Denoising Score Matching for Video Anomaly Detection
March 22, 2024, 4:45 a.m. | Jakub Micorek, Horst Possegger, Dominik Narnhofer, Horst Bischof, Mateusz Kozinski
cs.CV updates on arXiv.org arxiv.org
Abstract: We propose a novel approach to video anomaly detection: we treat feature vectors extracted from videos as realizations of a random variable with a fixed distribution and model this distribution with a neural network. This lets us estimate the likelihood of test videos and detect video anomalies by thresholding the likelihood estimates. We train our video anomaly detector using a modification of denoising score matching, a method that injects training data with noise to facilitate …
abstract anomaly anomaly detection arxiv cs.cv denoising detection distribution feature likelihood network neural network novel random test type vectors via video videos
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