Fallen Object Detection on Road by Using VAE Anomaly Detection with Average Image

Abstract

In order to keep roads safe and secure, it is useful to detect falling objects on roads automatically with surveillance cameras. Traditionally, the background subtraction method was used to detect falling objects. However, it sometimes detects environmental changes such as changing lighting conditions and shadows as falling objects. In this paper, we applied VAE (Variational Auto-Encoder) to falling object detection. In the experiment, compared with the background subtraction method of OpenCV, VAE showed better performance especially when the images including environmental changes. VAE increased the positive detection rate from 35% to 75% and decreased the negative detection rate from 15.0% to 2.4%.