Using temporal-domain peak interval determination for video-based short-term heart rate measurement

Video-based Heart Rate Measurement has drawn a lot of attention in recent years. A few papers have been proposed in this work and most of them applied Fourier transform peak interval determination method for heart rate measurement. However, the analyzing duration for one outcome in these methods is usually longer than 15 seconds. This is because that the measurement resolution in Fourier transform is proportional to the number of samples. In this paper, we apply a novel method to combine temporal-domain peak determination method and super resolution method for heart rate measurement. And we further propose a spectrum selection scheme and a data shift scheme to raise the measurement accuracy. The video database taken in our lab is used to evaluate the performance of the proposed method. The experimental results show two important things. The first is that when the analyzing duration of the proposed method is one third of Fourier transform, the precision of the proposed method is only a little lower than that of the Fourier transform method. Furthermore the precision of the proposed method is superior to Fourier transform approach when the analyzing duration is the same for both methods.