Table 7 The PSNR values of one- and two-level of different DWT implementations
From: An optimized two-level discrete wavelet implementation using residue number system
| Â | DA | FIR | RNS | Optimized RNS | |||
|---|---|---|---|---|---|---|---|
| Â | Â | Â | P 7 | P 10 | P 13 | P 10 a | P 13 a |
Architecture | 1L/2L | 1L/2L | 1L/2L | 1L/2L | 1L/2L | 2L | 2L |
Input precision | Q 5,16 | Q 5,16 | y=8/8b | y=12/12 | y=13/12 | y=6 | y=11 |
Coeff. precision | Q 1,15 c | Q 0,15 | z=11 | z=16/11 | z=18/13 | z=11 | z=13 |
Internal word length | 22 bit | NA | 22 bit | 31 bit | 40 bit | 31 bit | 40 bit |
PSNR (dB) | 73.5/63.5 | 86.3/78.7 | 56.5/41.87 | 84/53 | 90/54 | 48.5d | 54.5 |