Based on the distributions of a human walking within the view field of a pyroelectric infrared(PIR) detector along different paths or directions,a human motion recognition method using output signal of single PIR detector is presented.Fourier transform and short time Fourier transform(STFT) energy of the PIR signal are calculated as motion features,then principle components analysis(PCA) is used to reduce the feature dimensions,and canonical correlation analysis(CCA) is applied to feature fusion.Finally,lea...