| Zero padding | [11] without EP | [11] with EP | DT-CWT-NLM [14] | SWT-DWT [15] | Proposed Method (integer) | Proposed Method (floating-point) |
Lena | 35.33 | 35.48 | 35.63 | 29.48 | 33.03 | 35.85 | 36.16 |
Baboon | 24.28 | 24.27 | 24.30 | 21.90 | 22.84 | 24.28 | 24.31 |
Barbara | 25.80 | 25.67 | 25.91 | 23.48 | 24.49 | 26.00 | 26.05 |
Boat | 30.74 | 30.87 | 30.93 | 26.56 | 28.72 | 30.79 | 30.92 |
Peppers | 31.37 | 33.03 | 33.22 | 29.14 | 30.94 | 32.85 | 33.05 |
Medical 1 | 37.11 | 37.26 | 37.34 | 34.62 | 35.76 | 37.27 | 37.44 |
Medical 2 | 44.54 | 44.52 | 44.75 | 36.37 | 40.90 | 43.07 | 44.61 |