Figure 6From: Feature extraction and selection for objective gait analysis and fall risk assessment by accelerometry FreqPeakX1 and FreqPeakX2. Features 47 and 48 are the frequencies of the first and second frequency peaks highlighted by black circles. 2048 points FFT of the left leg acceleration. The FreqPeakX and FreqPeakY features are the X and Y coordinates of highlighted points.Back to article page