异常检测
异常(物理)
计算机科学
特征(语言学)
特征提取
人工智能
模式识别(心理学)
卷积神经网络
理论(学习稳定性)
推论
班级(哲学)
数据挖掘
机器学习
语言学
哲学
物理
凝聚态物理
作者
Zongyang Da,Yujie Dun,Chengxu Liu,Yuanzhi Liang,Yao Xue,Xueming Qian
标识
DOI:10.1016/j.knosys.2023.110251
摘要
Unmanned vending machines (UVMs) based on computer vision have shown huge commercial potential in unmanned retail. Anomaly detection is the problem of recognizing the falling-over and occlusion anomalies in UVMs. However, considering various anomaly features with different feature complexities, the existing methods are not sufficiently effective. In this paper, we propose an unmanned retail anomaly detection method based on deep convolutional neural networks (CNNs) called the complexity-classification anomaly detection (ClassAD) framework. The ClassAD method consists of two modules: a complexity rating module and a classification module. These two modules jointly input images of different feature complexity into different-capacity networks, which makes full use of the feature extraction ability of CNNs. ClassAD includes a decomposition feature enhancement approach to enhance inference speed. Furthermore, we introduce complexity-class loss and multi-instance loss in ClassAD for accuracy and learning stability. Experiments show that ClassAD yields promising results compared with state-of-the-art methods in both effectiveness and efficiency. In addition, we propose a UVM-Anomaly dataset for anomaly detection in UVMs.
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