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

Table 4

Comparison of image processing methods in terms of 4 quantitative quality metrics for chest radiographs.

Method	MSR	CNR	CIR	PSNR
UDWT	6.36	2.21	0.46	37.61
Sigmoid	6.32	2.17	0.53	36.66
Proposed	6.46	2.29	0.71	36.76