An Improved Sliding Window Area Method for T Wave Detection

Algorithm 1

Traditional SWA algorithm (T wave onset detection).

	Input: ECG signal , R peak locations, R peak numbers N, sliding window width , smoothing factor p, and morphology predefined factor r
	Output: T wave onset locations
	Calculation:
(1)	Calculate t1 and t2 and construct sliding window
	window =
(2)	Smooth signal and calculate sliding area for each point i inside [t1, t2]
(3)	T wave morphology classification
	if
	calculate
	end if
	if
	calculate
	end if
(4)	Get k
	Output: T wave onset = R peak + k.