Extracting of the ultrasound fetal heart rate signal based on wavelet packet mix node threshold.
Mingquan WangWanli ZhuShi ZhangZijing WangPublished in: BMEI (2011)
Keyphrases
- heart rate
- wavelet packet
- wavelet packet decomposition
- filter bank
- denoising
- wavelet packet transform
- blood pressure
- ultrasound images
- heart rate variability
- subband
- physical activity
- wavelet transform
- vital signs
- physiological signals
- wavelet function
- non stationary
- frequency band
- image recognition
- wavelet decomposition
- data structure
- tree structure
- signal processing
- multiscale
- wavelet domain
- high frequency
- feature vectors
- image retrieval