Extracting Blood Volume Pulse from Ambient Facial Skin Video
Analyzing micro-variations in green-spectrum light absorption caused by blood pulsing through sub-dermal capillary beds across the forehead and cheekbones.
Illumination Invariant Chroma Decomposition
Projecting RGB pixel channels into chrominance subspaces eliminates false pulse signals caused by sunlight passing through highway roadside trees.
- Measures heart rate with ±1.5 bpm clinical accuracy without skin contact.
- Continuous pulse rate, respiratory rate, and blood oxygen estimation.
- Robust tracking across diverse skin tones adhering to the Fitzpatrick scale.
- Zero degradation under pitch-black night-time driving using 940nm infrared illumination.
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