Blood Pressure
From Your Face
Our AI reads subtle microvascular colour oscillations in your skin using remote Photoplethysmography (rPPG) — extracting a full blood-pressure waveform from a standard camera in under 30 seconds, no hardware required.
How It Actually Works
Six steps from raw camera pixels to a camera-based blood-pressure estimate — all in under 30 seconds, entirely on-device.
Camera Capture
A standard webcam captures your face at 30+ fps. No specialist hardware, no sensors, no contact required — just the camera already built into your phone or laptop.
468-Point Facial Mesh
MediaPipe's BlazeFace model maps 468 landmarks across your face in real time, isolating the regions of interest (ROI) richest in haemoglobin signal — forehead, cheeks, nose bridge.
ICA Signal Extraction
Independent Component Analysis separates the subtle RGB colour oscillations caused by blood flowing beneath your skin from noise sources like lighting flicker and head movement.
PPG Waveform Reconstruction
The extracted rPPG signal is transformed into a photoplethysmography waveform — the same shape a clinical pulse-ox or arterial-line sensor produces, reconstructed purely from pixel data.
AI Blood-Pressure Inference
A deep neural network trained on paired rPPG+cuff-pressure datasets maps waveform morphology features — PTT, amplitude, systolic slope — to mmHg values for both systolic and diastolic readings.
AI Signal Output
The system converts signal features into an estimated blood-pressure-style reading for product demos and integration discussions. It should not be presented as a medical diagnosis.
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Who This Is For
- ✓NHS Trusts & Integrated Care Boards running remote monitoring programmes
- ✓GP surgeries & primary care networks triaging hypertension at scale
- ✓Community pharmacies offering blood-pressure check services
- ✓Occupational health teams doing contactless wellness screening
- ✓Digital health platforms embedding vitals into patient-facing apps
- ✓Research institutions studying cardiovascular biomarkers remotely
Compliance & Standards
- 🛡Product validation and clinical evidence to be confirmed before regulated deployment
- 🛡DCB0129 clinical safety principles for healthcare software deployments
- 🛡UK GDPR & Data Protection Act 2018 — no biometric data retained
- 🛡NICE NG136 hypertension pathway — screening thresholds aligned
- 🛡ISO 13485 readiness planning for future medical device workflows
- 🛡AES-256 in-transit + at-rest encryption — UK data residency
WellTechAI CIC is a Community Interest Company. Every surplus is reinvested into the mission — no profit to shareholders.
Ready to bring contactless BP to your community?
Whether you are an NHS Trust, an Integrated Care Board, a community health organisation, or a commissioner — we would love to talk about how rPPG-powered blood-pressure monitoring can work for you.