Gouthaman KV
Gouthaman KV has 1 paper in the ChatPPG research atlas (2026), linked to 1 model, with work using 3 datasets and 6 co-authors in the atlas. Main topics: ppg, foundation-model, contrastive, multimodal-supervision, motion-robustness, dolby.
Papers
- A robust PPG foundation model using multimodal physiological supervision2026 · ICML 2026 workshop / preprint
Pretrains a PPG-only foundation model (1D ResNet-26 encoder) on MIMIC-III Waveform Database Matched Subset (10,282 ICU patients, 125 Hz) using co-recorded ECG and respiration signals only to select which PPG windows count as contrastive positives/negatives during training — five summary metrics from ECG/RESP per 10s window build a "physiological metric space," and windows close in that space become positive pairs. At inference, only PPG is used. Explicitly targets robustness to noisy/motion-corrupted PPG, including an IMU-energy-stratified DaLiA noise analysis.
- Venue: ICML 2026 workshop / preprint (Dolby Labs + Georgia Tech)
- Subjects: 10282
- Signals: ppg
Models
Datasets used in this work
- EEVR: VR emotion elicitation with PPG + EDA and textual emotion descriptions (NeurIPS 2024 D&B)
- PPG-DaLiA: PPG dataset for motion compensation / HR
- VitalVideos: face video + contact PPG + BP/SpO2 (Europe-1, Africa-1, Worldwide)