Edge-Detection in Noisy Images Using Independent Component Analysis

Table 1

Objective evaluation of the proposed approach.

Image	SNRRMS		SNRPeak		eRMS		FOM
	NLMCanny	Proposed	NLMCanny	Proposed	NLMCanny	Proposed	NLMCanny	Proposed
Gray-scale images
Barbara	0.240	0.792	54.719	56.481	0.4084	0.4491	0.5256	0.6164
House	0.553	0.806	53.272	56.568	0.4185	0.4594	0.4820	0.7830
Bird	0.172	0.567	54.363	56.205	0.3880	0.3947	0.6714	0.6926
Colored images
Lena	0.226	0.635	54.213	56.032	0.4010	0.4691	0.7142	0.7470
Zebra	0.290	0.564	55.094	55.379	0.4488	0.4582	0.7322	0.7511
Butterfly	0.299	0.640	55.814	56.375	0.3649	0.3981	0.6750	0.6840