Table 4: Comparison of PSNR values for different methods.
Image Number NMI INP CRS Proposed
1211 28.02 27.67 28.53 32.26
449 33.72 33.27 32.58 33.98
554 29.44 28.96 29.61 34.61
608 34.18 33.81 32.75 34.90
349 32.72 32.16 31.84 36.11