Detection device, detection system, detection method, and program

Abstract

The detection device comprises: an acquisition unit that acquires an evaluation image of the interior of a waste storage pit; an extraction unit that extracts feature vectors from the evaluation image using a pre-learned image recognition model; an evaluation unit that uses an evaluation model, which is a reference vector obtained by reducing the dimension of the feature vectors extracted from a normal image taken when the interior of the waste storage pit is in a normal state, to calculate the distance between the reference vector and the feature vector extracted from the evaluation image, and evaluates the anomaly score of each region of the evaluation image based on the calculated distance; and a determination unit that determines that there is an unsuitable object in a region when the area of ​​a region with an anomaly score of more than or equal to an anomaly threshold reaches or exceeds an upper limit area.

Images