A monocular camera based person-specific fall detection system exploiting deep neural network aided unsupervised
Miao Yu, Liyun Gong, Ross Clifford, Carol Duff, Xujiong Ye, Stefanos Kollias · Lincoln Repository (University of Lincoln) · 2019
In this paper, we propose a novel fall detection system based on a monocular camera. A single camera covering the living area is used for video recordings of an elderly person’s daily activities. From the video recordings, the human silhouette regions in every frame are extracted from the background, with related low-dimensionality representative features being automatically extracted by a convolutional neural network based autoencoder (CNN-AE). Extracted features together with the silhouette position information are combined together to construct an one class support vector machine (OCSVM) model for fall detection. From the comprehensive experimental evaluations in a real home environment,it is shown that the proposed fall detection method can detect different types of falls (falls in different orientations, falls with occlusions in a home environment) with high accuracy while achieving better performance than hand-crafted features based ones.