Optimal edge detection using multiple operators for image understanding

EURASIP Journal on Advances in Signal Processing

Table 2 Detection error

	Rothwell	Bergholm	Canny	Schunck	Lacroix	Deriche	ROC	Weighted kappa coeff. (r= 0.7)
Buildings	0.5506	0.6047	0.5593	0.5640	0.5736	0.5500	0.5425	0.4885
Baseball	0.5710	0.5968	0.5668	0.5689	0.5865	0.5726	0.5505	0.5183
Airfield	0.4707	0.4643	0.5057	0.5147	0.5340	0.5276	0.4634	0.4126
Homes	0.5991	0.5703	0.5712	0.5743	0.4851	0.6302	0.5177	0.4402
Large building	0.5292	0.5970	0.5328	0.5459	0.5180	0.5194	0.5084	0.4440
Main building	0.5608	0.5651	0.6180	0.6130	0.5193	0.6677	0.5439	0.4561
Pool tennis	0.5273	0.5639	0.5086	0.5367	0.5396	0.4852	0.5029	0.4343
School	0.5638	0.5844	0.5571	0.5647	0.5701	0.5928	0.5444	0.5001
Series	0.4321	0.5297	0.4143	0.4276	0.4522	0.5303	0.4139	0.3619
Woods	0.5634	0.5846	0.5526	0.5695	0.5274	0.6856	0.5241	0.4602