Remote photoplethysmography for heart rate and blood oxygenation measurement: a review

Pireh Pirzada, Adriana Wilde, David Cameron Christopher Harris-Birtill

Research output: Contribution to journalArticlepeer-review


Usually measured through obtrusive contact-based methods, heart rate (HR) and peripheral oxygen saturation (SpO2) are critical physiological signs used by clinicians during emergency interventions. Remote Photoplethysmography (rPPG) allows for unobtrusive sensing of these vital signs for health monitoring in various settings. We present a review of rPPG-related research conducted including related processes and techniques, such as regions of interest (ROI) selection, extracting the raw signal, pre-processing data, applying noise reduction algorithms, Fast Fourier transforms (FFT), filtering and extracting these vital signs. Further, we present a detailed, critical evaluation of available rPPG systems. Limitations and future directions have also been identified to further advance this field.
Original languageEnglish
Article number10552193
Number of pages18
JournalIEEE Sensors Journal
VolumeEarly Access
Early online date7 Jun 2024
Publication statusE-pub ahead of print - 7 Jun 2024


  • Remote Photoplethysmography (rPPG)
  • Heart rate
  • Blood oxygenation
  • Signal processing
  • Health monitoring


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