Table 6 Approximation results of DCT-based IPRM, EPWT and tensor product wavelet transform for the phantom image
From: Inverse polynomial reconstruction method in DCT domain
Method | L | N d | SNR (dB) | Entropy of | Storage cost (bpp) | |
|---|---|---|---|---|---|---|
|  |  |  |  |  | b  = 8 | b  = 16 |
DCT IPRM | – | 175 | 68.39 | 0.36 | 0.40 | 0.43 |
EPWT Haar | 9 | 650 | 35.59 | 0.38 | 0.54 | 0.61 |
EPWT db4 | 9 | 1500 | 35.73 | 0.38 | 0.71 | 0.89 |
EPWT 7/9 | 9 | 2700 | 35.56 | 0.38 | 0.94 | 1.27 |
tensor prod. Haar | 5 | 3300 | 36.23 | – | 0.69 | 1.09 |
tensor prod. db4 | 5 | 9000 | 35.79 | – | 1.67 | 2.77 |
tensor prod. 7/9 | 5 | 8000 | 35.30 | – | 1.51 | 2.48 |