Improving Image Quality in Medical Images Using a Combined Method of Undecimated Wavelet Transform and Wavelet Coefficient Mapping

Table 2

Results of chest radiograph scoring for the three combinations by the five observers.

Combination		Observer
		a	b	c	d	e	Sum
Sigmoid	UDWT	−1	−0.4	−0.1	−0.95	−1.25	−3.7
Sigmoid	Proposed	−1.7	−1.4	−1.35	−1.4	−1.65	−7.5
UDWT	Proposed	−1.5	−1.35	−1.5	−1.4	−1.55	−7.3