A Combined One-Class SVM and Template-Matching Approach for User-Aided Human Fall Detection by Means of Floor Acoustic Features

Figure 1

Time domain (on the left) and frequency domain (on the right) representation of a normal human activity signal (a-b), human fall signal (c-d), and book fall signal (e-f).

(a) Normal human activity signal in the time domain

(b) Normal human activity signal in the frequency domain

(c) Human fall signal in the time domain

(d) Human fall signal in the frequency domain

(e) Book fall signal in the time domain

(f) Book fall signal in the frequency domain