Pnmpaste User Manual(0) Pnmpaste User Manual(0)
pnmpaste - paste a rectangle into a PNM image
frompnmfile x y
This program is part of Netpbm(1).
pnmpaste reads two PNM images as input and inserts the first image (the
"pasted image") into the second (the "base image") at the specified
location, and produces a PNM image the same size and type as the base
image as output. If you don’t specify the second file, pnmpaste reads
the base image from Standard Input.
x and y specify the location in the base image at which to put the top
left corner of the pasted image, x giving the horizontal position and x
giving the vertical position. A nonnegative value indicates the number
of pixels right of the right edge or below the top edge of the base
image, while a negative value indicates the number of pixels right of
the right edge or below the bottom edge (so x = -5 means 5 pixels left
of the right edge).
If any part of the pasted image does not fit within the base image,
This tool is most useful in combination with pamcut. For instance, if
you want to edit a small segment of a large image, and your image edi-
tor cannot edit the large image, you can cut out the segment you are
interested in, edit it, and then paste it back in.
Another useful companion tool is pbmmask.
pamcomp is a more general tool, except that it lacks the ’or,’ ’and,’
and ’xor’ functions. pamcomp allows you to specify an alpha mask in
order to have only part of the inserted image get inserted. So the
inserted pixels need not be a rectangle. You can also have the
inserted image be translucent, so the resulting image is a mixture of
the inserted image and the base image.
The option specifies the operation to use when doing the paste. The
default is -replace. The other logical operations are only allowed if
both input images are PBM images. These operations act as if white is
TRUE and black is FALSE.
You can abbreviate all options to their shortest unique prefix.
pamcomp(1), pamcut(1), pnminvert(1), pnmarith(1), pbmmask(1), pnm(1)
Copyright (C) 1989, 1991 by Jef Poskanzer.
netpbm documentation 21 February 1991 Pnmpaste User Manual(0)
Man(1) output converted with