Table 2.

Evaluation of the SCT algorithm versus manual thresholding

Measure	Noise	SCT	Manual
Accuracy	STD	1.00 (3.91 × 10−4)	1.00 (2.54 × 10−4)
	10 ×	9.97 × 10−1 (6.45 × 10−3)	9.99 × 10−1 (5.87 × 10−4)
FP rate	STD	3.19 × 10−4 (4.22 × 10−4)	4.15 × 10−5 (7.14 × 10−5)
	10 ×	2.20 × 10−3 (6.63 × 10−3)	1.52 × 10−4 (5.21 × 10−5)
TP rate	STD	9.67 × 10−1 (6.18 × 10−2)	9.16 × 10−1 (1.40 × 10−1)
	10 ×	4.49 × 10−1 (1.38 × 10−1)	4.64 × 10−1 (5.96 × 10−2)
P(error)	STD	4.00 × 10−5 (3.90 × 10−4)	2.17 × 10−5 (2.54 × 10−4)
	10 ×	3.41 × 10−4 (6.43 × 10−3)	1.37 × 10−4 (5.87 × 10−4)

Ten image stacks were simulated for each noise level and the average accuracy, TP and FP rates, and P(error) of each thresholding technique across the simulations is summarized. Standard deviations are shown within parentheses.