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 pixels 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.