Databases Reference
In-Depth Information
F I GU R E 7 . 4
Comparison between the received image using progressive transmis-
sion and using the standard raster scan order.
are allowed to use entropy coding, we can remove the problem of data expansion by using the
fact that the neighboring values in each approximation are heavily correlated, as are values
in different levels of the pyramid. This means that differences between these values can be
efficiently encoded using entropy coding. By doing so, we end up getting compression instead
of expansion.
