Representing PPG as a four-channel 2D beat-aligned image and processing it with a Vision Transformer reduces ECG reconstruction error by up to 29% in PRD and 15% in RMSE compared with a 1D CNN baseline.
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Beyond Single-Channel: Multichannel Signal Imaging for PPG-to-ECG Reconstruction with Vision Transformers
Representing PPG as a four-channel 2D beat-aligned image and processing it with a Vision Transformer reduces ECG reconstruction error by up to 29% in PRD and 15% in RMSE compared with a 1D CNN baseline.