arxivcs.CVcs.LG2026-07-17
CanonicalPhys: Pose-Robust Remote Photoplethysmography via Canonical-Space Priors
Hui Wei, Seyedata Jodeiri Seyedian, Xiaobai Li, Guoying Zhao
Deep remote photoplethysmography (rPPG) attains sub-bpm heart-rate error on frontal, stationary faces yet degrades sharply under head pose: on MMPD, the state-of-the-art FactorizePhys backbone's MAE grows $1.60\times$ from frontal ($|\text{yaw}|{<}15^\circ$) to large-yaw ($|\text…