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150 7 Directional Wavelet Transform
Table 7.2 Comparisons of coding performance (in decibels) between JPEG 2000 and the proposed
ADL-based coding scheme with the 5/3 and 9/7 filters.
Images bpp
5/3 filter 9/7 filter
J2K ADL ADL ADL J2K ADL ADL ADL
1-pel 1/2-pel 1/4-pel 1-pel 1/2-pel 1/4-pel
Barbara
0.125 24.59 25.69 26.07 25.95 25.02 26.16 26.32 26.45
0.25 27.38 28.79 29.13 29.22 28.27 29.37 29.70 29.78
0.5 30.95 32.35 32.87 32.95 32.15 33.10 33.50 22.58
1 36.04 36.89 37.16 37.24 37.11 37.58 37.84 37.88
Lena
0.125 30.11 30.66 30.75 30.68 30.41 30.88 31.00 31.02
0.25 33.22 33.76 33.90 33.88 33.78 34.13 34.18 34.25
0.5 36.45 36.80 36.91 36.94 37.02 37.17 ...