RESAMPLE(1) RESAMPLE(1)
NAME
resample, resize - resample a picture
SYNOPSIS
resample [ -x size ] [ -y size ] [ file ]
resize [ -n ] [ -x size ] [ -y size ] [ file ]
DESCRIPTION
Resample and Resize resamples its input image (default stan-
dard input) to a new size. Resample uses a Kaiser window
which produces high quality results and resize uses bilinear
interpolation which is faster but produces more fuzzy
images. By specifying the -n option, resize can also use
nearest neighbour interpolation which preserves the individ-
ual pixels and is appropriate for pixel art or qr(1) output.
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(6),
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
/sys/src/cmd/resample.c
/sys/src/cmd/resize.c
SEE ALSO
crop(1), image(6)
Page 1 Plan 9 (printed 3/14/25)