Heart Rate Detection From Facial Videos Using A Frequencyconstrained Multilayer Sparse Coding.
Xuenan LiuXuezhi YangDingliang WangShuai FangPublished in: ICIP (2020)
Keyphrases
- sparse coding
- heart rate
- dictionary learning
- sparse representation
- natural images
- image classification
- linear combination
- unsupervised learning
- blood pressure
- image representation
- discriminative power
- high dimensional
- generative model
- sparse codes
- vital signs
- face recognition
- feature space
- heart rate variability
- visual words
- image patches
- video sequences
- facial expressions
- ground truth
- face images
- co occurrence
- small number
- multiscale
- feature extraction
- image segmentation
- computer vision