Corrigendum

Figures & data

Table 1. Quantitative evaluation for the four test datasets shown in Figure 13.

Dataset	Resolution (m)	Completeness (%)	Correctness (%)	Quality (%)
Dataset-1	0.1	74.4	83.2	64.7
Dataset-2	0.2	80.8	81.4	68.2
Dataset-3	1.0	87.2	93.3	82.1
Dataset-4	1.0	91.4	93.1	85.7

Table 2. Performance of the road network extraction from the four test cases shown in Figure 15 and 16.

Image	Completeness (%)		Correctness (%)		Quality (%)
	Object-based	Proposed	Object-based	Proposed	Object-based	Proposed
Test case 1	60	78	71	76	48	63
Test case 2	95	93	80	96	76	90
Test case 3	93	92	85	95	80	88
Test case 4	70	96	84	96	62	92

Table 3. Comparison and quantitative evaluation for complex urban areas shown in Figure 17.

Method	Completeness (%)	Correctness (%)	Quality (%)	No. of parameters	Processing time (s)	Interaction required
Object-based	60	64	45	13	> 300	Parameter turning
Poullis (2014)	68	64	62	2	≈ 86	None
Proposed	75	70	57	None	< 30	Seed point