Evaluation parameters of Model 3 (the hybrid model) with different cadences. The bottom x-axis represents the number of the interval frames used to increase the cadence (see the main text), and the top x-axis is the corresponding cadence. The definition of the evaluation metrics (RMS E, MAE, CC, and S S IM) can be found in the main text. RMS E and MAE have units of pixel per frame (PPF). CC and S S IM are unitless.