pixshrink — shrink a color pix file
shrink_factor] [-u ] [
will take a color
format file of given dimensions and produce a smaller
flags specify the input file width and number of scan lines in pixels.
They can both be set to the same value via
Defaults of 512 are assumed for unspecified dimensions.
The integer scaling factor (
shrink_factor) is set with the
flag. By default, the factor is 2. Thus, pixshrink forms the logical
opposite of the
The program reads the entire image into memory,
and then scales the image down
shrink_factor the original size in both dimensions.
By default, pixshrink uses boxcar averaging to produce the output pixels from
the input. The
option causes pixshrink to use image undersampling instead.
If the dimensions of the input image are not evenly divisible by the shrink factor, incorrect and bizarre output is generated.
This software is Copyright (c) 1990-2016 by the United States Government as represented by U.S. Army Research Laboratory.