Detecting Pulse Rates From Facial Videos Recorded in Unstable Lighting Conditions: An Adaptive Spatiotemporal Homomorphic Filtering Algorithm.
Xuenan LiuXuezhi YangDingliang WangAlexander WongPublished in: IEEE Trans. Instrum. Meas. (2021)
Keyphrases
- lighting conditions
- filtering algorithm
- human faces
- facial expressions
- face detection
- illumination conditions
- face recognition
- viewpoint
- facial features
- pose variations
- face images
- facial images
- light source
- median filter
- video sequences
- active appearance models
- eye detection and tracking
- photometric stereo
- space time
- facial expression recognition
- skin color
- varying illumination
- video surveillance
- signal to noise ratio
- video frames
- moving objects
- single image
- machine learning
- head motion
- data sets