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

Table 1

The comparison of LPC-SI values in the original images and the enhanced images by the NSCT method, Alpha-rooting method, and our proposed method. All of the values are the best ones for the respective method.

Image	LPC-SI	LPC-SI	LPC-SI	LPC-SI
	input	NSCT	alpha-rooting	our proposed
Barbara	0.9246	0.9532	0.9685	0.9682
House	0.8760	0.9302	0.9395	0.9603
Boat	0.9341	0.9503	0.9529	0.9590
Lena	0.9060	0.9411	0.9549	0.9629
Peppers	0.9210	0.9533	0.9473	0.9592
Couple	0.9213	0.9535	0.9499	0.9565
Hill	0.8840	0.9438	0.9422	0.9566
Man	0.9104	0.9508	0.9499	0.9594
Cameraman	0.9364	0.9578	0.9534	0.9559
Fingerprint	0.7777	0.9401	0.9034	0.9204