HR is extracted byDocumentation Index
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_extract_heart_rate(signal, fps) from the CHROM-processed rPPG signal.
| Aspect | Value |
|---|---|
| Accuracy | < 5 bpm MAE at SNR > 3.0 |
| Minimum duration | 30 s (set via min_hr_duration) |
| Signal | CHROM rPPG → bandpass [0.7, 4.0] Hz → SciPy FFT peak |
| Output | heart_rate (bpm), heart_rate_confidence (0–1) |
heart_rate = None and heart_rate_confidence = 0.0. There is no fabrication.