Video Pulse Signals in Stationary and Motion Conditions

@article{pollard_physionet_2026, title = {{PhysioNet} as a global platform for biomedical research}, volume = {1}, issn = {3005-0693}, url = {https://doi.org/10.1038/s44360-026-00096-z}, doi = {10.1038/s44360-026-00096-z}, abstract = {Twenty-five years after its first public repository was established, the PhysioNet resource for biomedical and clinical data has enabled tens of thousands of research papers. Further efforts are ongoing to advance secure data sharing, community engagement and scalable research infrastructure.}, number = {8}, journal = {Nature Health}, author = {Pollard, Tom and Moody, Benjamin E. and Lehman, Li-wei H. and Gow, Brian J. and Fernandes, Chrystinne and Xie, Chen and Johnson, Alistair and Mark, Roger G. and Heldt, Thomas}, month = aug, year = {2026}, pages = {792--795},}

Data Collection

The data set contains 40 pulse signal recordings obtained from 15 healthy volunteers (12 men and 3 women between 23 and 35 years). For each subject, there is a simultaneous face video recording, and a finger pulse recording reference system, in a sitting position. The video pulse signals were obtained from videos recorded by two camera models at 15 and 60 frames per second, which were then further processed. The reference finger pulse sensor had a sampling frequency of 1 kHz. There is a time offset between the reference and video signals, commented in the WFDB header files.

As part of the study, only 5 subjects were recorded by both cameras. Two recordings of about 1 min were acquired for each subject in stationary and motion conditions. 50s of the recordings were performed in order to analyze the same record length in all subjects.

Files

The record name is formed as subj_x_y_z_s where:

• x: number of subject
• y: condition of the recording (s = stationary; m = motion)
• z: camera (c1 = camera 1 (Logitech model); c2 = camera 2 (GoPro model))
• s: the signal (vid = video pulse; ref = reference finger pulse)

Contributors

A. Melchor Rodríguez (angel.melchor at upc.edu) and J. Ramos-Castro (juan.jose.ramos at upc.edu)