Fig. 1: The 12-lead ECG generation with single-lead ECG.

Top-left: the input single-lead ECG can be arbitrary, including I, II, III, aVR, aVL, avF, V1, V2, V3, V4, V5, V6.Top-right: it shows the detailed process, and this case takes lead I as an example. Bottom: the evalution benchmark, including signal-level, feature-level and diagnoistic-level.