Welltra

Welltra

Welltra

Welltra

Insight on our contactless vital sign technology

rPPG TECHNOLOGY

technology

rPPG (remote Photoplethysmography) is a non-contact technology used to measure physiological signals—mainly heart rate—by analyzing subtle color changes in the skin captured through a camera (typically a webcam or smartphone camera).

How it Works:

  • Capture: A regular camera records a short facial video under normal lighting conditions.
  • Light Reflection: Ambient light reflects off the skin. As blood pulses through the vessels, it causes micro color variations in the face—particularly in the green channel of the RGB spectrum.
  • Signal Processing: Advanced algorithms isolate and amplify these subtle changes across the RGB (red, green, blue) channels while filtering out motion artifacts & noise.
  • Vital Extraction: The system reconstructs a clean pulsatile waveform and extracts vital health metrics such as heart rate, blood pressure, stress index, and more.
  • Delivery: The results are delivered in real time via the WellTra app or smart kiosk, offering a seamless, contact-free health check experience.
Key Features:Contact lessclinically validatedscalablePrivacyLocal computing

VOICE BIOMETRICS TECHNOLOGY

Vocal Biomarker Extraction2,500+ Acoustic Features
Voice Biometrics Analysis
Pitch & ToneHarmonics
TimingCadence & Pauses
NeuralReaction Latency

Voice Biometrics is an advanced non-invasive AI technology that unlocks the human voice as a vital sign. By capturing and analyzing subtle acoustic and linguistic biomarkers from natural speech, our machine learning models deliver objective, real-time assessments of mental, behavioral, and neuro-cognitive wellness in seconds.

How it Works:

  • Capture: A standard microphone records a few seconds of natural, conversational speech during a brief check-in prompt—no specialized hardware required.
  • Vocal Feature Extraction: Advanced signal processing isolates over 2,500 acoustic and linguistic biomarkers, including pitch jitter, vocal shimmer, harmonics, formant frequency, and cadence.
  • AI Pattern Processing: Proprietary neural algorithms evaluate vocal response signatures and reaction times while filtering ambient noise and linguistic variances.
  • Biomarker Scoring: Raw speech features are converted into quantifiable indices assessing stress, mood state, anxiety, energy levels, and early cognitive response patterns (MCI & Alzheimer’s indicators).
  • Delivery: Real-time actionable wellness metrics are delivered instantly via the Welltra app, Smart Mirror, or Smart Kiosk for proactive personal care and decision support.

Behavioral Wellness

Real-time assessment of stress, mood state, anxiety markers, and fatigue.

Cognitive Screening

Vocal biomarkers tracking early memory patterns, MCI, and neurological health.

Key Features:Non-invasiveSeconds to screenAcoustic & linguistic AIReal-time scoringLocal & cloud privacy

Technology Specifications

Hardware Requirements

  • Front Camera: 15 – 30 FPS (Frames per second)
    Audio Input: Standard built-in device microphone (16kHz+ sampling)

Environment Protocols

  • Stand Steady / Fine Movement allowed
    0 - 200 cm to away from device
    200- 300 lux minimum

Software Features

  • Local edge computing insuring no data leaves your device and never stored in any cloud bin!

Integration Options

  • Mobile SDKs: iOS, Android
  • Web SDK: JavaScript-based for browser integration
  • Cloud API: RESTful API for asynchronous processing
  • Edge Support: On-device processing with TensorFlow Lite or CoreML
OUR TECHNOLOGY
ADDS VALUE TO OUR CUSTOMER'S LIVES

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