Block-Extraction and Haar Transform Based Linear Singularity Representation for Image Enhancement

Table 2

The BV and DV values in the original image and the enhanced images by the NSCT method, Alpha-root method, and our proposed method. All of these values are obtained when the LPC-SI is the best.

Image	Input		Alpha-rooting		NSCT		Our proposed
	BV	DV	BV	DV	BV	DV	BV	DV
Lena	0.55	6.60	0.34	13.38	0.40	16.85	0.36	18.38
House	0.62	7.05	0.12	24.14	0.26	20.77	0.12	32.33
Barbara	0.66	12.53	0.33	32.57	0.48	31.48	0.37	33.50
Peppers	0.68	10.43	0.31	19.74	0.47	13.04	0.42	31.02
Boat	0.66	9.47	0.33	15.43	0.47	24.40	0.34	23.07
Couple	0.63	9.95	0.34	24.20	0.45	25.65	0.40	30.47
Hill	0.58	8.42	0.30	18.52	0.41	18.78	0.34	21.81
Man	0.53	8.60	0.28	19.67	0.48	21.66	0.34	29.22
Cam.	0.60	11.01	0.26	28.36	0.36	35.62	0.35	43.79
Fingerprint	0.53	18.95	0.39	61.97	0.57	10.47	0.52	50.54