pixhalve — halve a color pix file
pixhalve [-a ] [-s
in_height] [<] [
will take a color
format file of given dimensions and reduce the resolution of the file
by one half in each direction using a 5x5 pyramid filter. If a file name
is not given, standard input will be used.
flags specify the input file width and number of scan lines in pixels;
they can be set to the same value via
Defaults of 512 are assumed for unspecified dimensions.
flag indicates autosizing (off by default).
This software is Copyright (c) 1991-2016 by the United States Government as represented by U.S. Army Research Laboratory.