Attack detection device, adversarial sample patch detection system, attack detection method, and non-transitory computer readable medium

Abstract

An attack detection device () includes an anomalous pattern detection unit () to detect whether an anomalous pattern is included in a time-series recognition score that is time-series data generated using a plurality of recognition scores that are calculated respectively using a plurality of pieces of image data captured of a range within an image-capture range at mutually different time points within an image-capture time range, and indicate results of detecting objects respectively in the plurality of pieces of image data. The anomalous pattern is a pattern that occurs when an adversarial sample patch attack has been conducted against at least one of the plurality of pieces of image data.