Three Ways to Improve the Performance of Real-Life Camera-Based Fall Detection Systems

Figure 3

Extraction of salient subject features used for fall detection. Purple rectangle: bounding box of subject; white fine segmented line: best-fitting ellipse within subject bounding box; double green diamond: center of mass; blue octagon: head position (small, filled black rectangle is not part of feature extraction set; it is inserted in the figure presentation here to maintain subject anonymity) [28].