Table 2.

Unsigned average symmetric surface distance error (UASSD) (mean ± standard deviation) in μm for normal case. Obsv - Expert manual tracings.

Surface	Normal
	OSCS vs. Obsv	CNN-S vs. Obsv	UNET-1 vs Obsv.	UNET-2 vs Obsv.
S 1	4.04±0.19	3.45±0.26	38.11±16.47	30.52±11.78
S 2	4.94±0.52	4.10±0.68	11.98±1.26	10.36±5.97
S 3	5.78±1.26	5.14±1.03	12.43±6.69	11.11±6.33
Overall	4.90 ±0.71	4.23±0.71	20.83±8.33	17.31±8.10