RESAMPLE(1) RESAMPLE(1)
NAME
resample - resample a picture
SYNOPSIS
resample [ -x size ] [ -y size ] [ file ]
DESCRIPTION
Resample resamples its input image (default standard input)
to a new size. The image is decimated or interpolated using
a Kaiser window.
The size of the resampled image can be specified with the -x
and -y options. An unadorned value sets the number of pix-
els of that dimension; a suffixed percent sign specifies a
percentage. If only one of -x or -y is given, the other
dimension is scaled to preserve the aspect ratio of the
original image. Thus, -x50% will reduce the image to half
its original dimension in both x and y.
The input should be a Plan 9 image as described in image(7),
and the output will be a compressed 24-bit r8g8b8 image. To
uncompress the image or change the pixel format, use iconv
(see crop(1)).
SOURCE
/usr/local/plan9/src/cmd/resample.c
SEE ALSO
crop(1), image(7)
BUGS
Faster algorithms exist, but this implementation produces
correct pictures.
Page 1 Plan 9 (printed 12/22/24)