Usage

 dscale 
   [-sn struct<integer> | 
    -s struct<string> | 
    -sb struct<string>]
   [imagefile]

-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.