Table 7 Approximation results of DCT-based IPRM, EPWT and tensor product wavelet transform for the piecewise linear 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 | – | 40 | 34.58 | 0.14 | 0.15 | 0.16 |
EPWT Haar | 9 | 200 | 35.25 | 0.33 | 0.39 | 0.41 |
EPWT db4 | 9 | 200 | 35.75 | 0.33 | 0.39 | 0.41 |
EPWT 7/9 | 9 | 500 | 35.18 | 0.33 | 0.46 | 0.52 |
tensor prod. Haar | 5 | 2800 | 35.31 | – | 0.59 | 0.93 |
tensor prod. db4 | 5 | 3200 | 35.26 | – | 0.67 | 1.06 |
tensor prod. 7/9 | 5 | 1800 | 36.00 | – | 0.41 | 0.62 |