Balancing cardiac privacy with quality in video recordings.

ABSTRACT:

Background

Remote photoplethysmography (rPPG) is a technique that extracts physiological signals, such as heart rate, from facial videos using standard Red-Green-Blue cameras. While rPPG offers valuable health insights, it also exposes individuals to potential misuse, as sensitive information can be inferred without consent.

Methods

This paper introduces a reversible video modification framework for removing, encrypting, transmitting, and restoring rPPG signals in facial videos, using frame-wise sinusoidal modulation applied to specific rPPG-rich facial regions, with a focus on maintaining perceptual quality and concealing the true heart rate. Our approach is contrasted with prior methods using seven rPPG techniques on the LGI-PPGI dataset, encompassing various activities. E

SUBMITTER: Elgendi M 

PROVIDER: S-EPMC12635239 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature