Table 4.

Ablation experiments to evaluate the effectiveness of the proposed extended skip connections.

Method	Baseline	Skip layer (fixed)	Large conv	Skip layer (multi-scale filters)	Paddy line IoU (%)
UNet	√	√			56.44
UNet_WC	√	√	√		59.73
ESNet	√		√	√	62.73

ESNet, enhanced skip network; IoU, intersection over union.