Detection of Impedance Cardioaraphy's Characteristic Points Based on Wavelet Transform.
With observation that singularities of a multi-scale wavelet transform result are related to discontinuities of the signal, a novel wavelet transform based method is proposed in this paper for detection of biomedical signals' characteristic points. For impedance cardiography signals, characteristic points of the signal dz/dt, including its peaks, start-point and end-point of ventricular ejection are detected and located by using singularities of wavelet transform (e.g., crossover points, maxima, minima). Experiment results showed validity of the approach.
Shuguang
Zhao
Z
professor in electronic engineering with Xidian University, where he is also the vice director of the department of biomedical engineering. His current research interests mainly include intelligent instruments and systems, electronic design automation and evolvable hardware.(e-mail: sg.zhao@126.com).
Yanhong
Fang
F
Hailong
Zhao
Z
Min
Tang
T