Databases Reference
In-Depth Information
F I GU R E 14 . 29
Decomposition of Sinan image using the eight-tap Johnston filter.
F I GU R E 14 . 30
Decomposition of Sinan image using the 16-tap Johnston filter.
Increasing the size of the filter is not necessarily the only way of improving the energy com-
paction. Figure
14.31
shows the decomposition obtained using the eight-tap Smith-Barnwell
filter. The results are almost identical to the 16-tap Johnston filter. Therefore, rather than in-
crease the computational load by going to a 16-tap filter, we can keep the same computational
load and simply use a different filter.
