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decimate
[-N vertical decimation<integer>
[horizontal decimation<integer>]]
[-sn struct<integer> |
-s struct<string> |
-sb struct<string>]
[imagefile]
- -N
-
If only vertical decimation is specified, horizontal
decimation is set equal to the vertical decimation.
Default value is two.
- -s
-
Filter structure string, defined as a quad tree.
See the module filtertree (CompileFiltStructTree)
for a description of the structure.
- -sb
-
Filterstructure string, defined as a binary tree.
See the module filtertree (CompileFiltStructTreeFromBin)
for a description of the structure.
- -sn
-
Filter structure number, between 1 and 11 (default 4).
See the module filtertree (BuildFiltStructTree)
for a description of the structure.
If any of the parameters -s, -sb or -sn is used,
then this program performs ``simulated'' decimation on the image
corresponding to the critical sampling of a filter with the specified
filterstructure, and the simulated decimatedimage is then decimated
by the factor defined by -N.