pnmcrop

Section: User Commands (1)
Updated: 03 July 2000
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NAME

pnmcrop - crop a portable anymap  

SYNOPSIS

pnmcrop [-white|-black] [-left] [-right] [-top] [-bottom] [pnmfile]

All options may be abbreviated to their shortest unique prefix or specified with double hyphens.

 

DESCRIPTION

Reads a PBM, PGM, or PPM image as input. Removes borders that are the background color, and produces the same type of image as output.

If you don't specify otherwise, pnmcrop assumes the background color is whatever color the top left and right corners of the image are and if they are different colors, something midway between them. You can specify that the background is white or black with the -white and -black options.

By default, pnmcrop chops off any stripe of background color it finds on all four sides. You can tell pnmcrop to remove only specific borders with the -left, -right, -top, and -bottom options.

If you want to chop a specific amount off the side of an image, use pnmcut.

If you want to add different borders after removing the existing ones, use pnmcat or pnmcomp.

 

OPTIONS

-white
Take white to be the background color. pnmcrop removes borders which are white.
-black
Take black to be the background color. pnmcrop removes borders which are black.
-left
Remove any left border.
-right
Remove any right border.
-top
Remove any top border.
-bottom
Remove any bottom border.
-verbose
Print on Standard Error information about the processing, including exactly how much is being cropped off of which sides.

 

SEE ALSO

pnmcut(1), pnmfile(1), pnm(5)

 

AUTHOR

Copyright (C) 1989 by Jef Poskanzer.


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
SEE ALSO
AUTHOR

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Time: 16:15:30 GMT, July 31, 2024