pnmcomp
Updated: 15 February 2004
Table Of Contents
NAME
pnmcomp - composite (overlay) two PNM images together
SYNOPSIS
pnmcomp [-align={left|center|right| beyondleft|beyondright}]
[-valign={top|middle|bottom| above|below}]
[-xoff=X] [-yoff=Y]
[-alpha=alpha-pgmfile] [-invert] [-opacity=opacity]
overlay_file [underlying_file [output_file]]
Minimum unique abbreviation of option is acceptable. You may
use double
hyphens instead of single hyphen to denote options. You may
use white space
in place of the equals sign to separate an option name from
its value.
DESCRIPTION
This program is part of Netpbm.
pnmcomp was obsoleted by pamcomp, introduced with Netpbm 10.21
(March 2004).
pamcomp is backward compatible with pnmcomp, plus adds many
additional
functions, including the ability to process PAM images, and
tends to produce
better transparency results.
pnmcomp remains in the Netpbm package because it probably has
fewer bugs for
now than pamcomp, and is faster. Some day, pnmcomp will proba-
bly become an
alias for pamcomp.
You can use the pamcomp documentation for pnmcomp, considering
the following
differences:
* pnmcomp options are a subset of pamscale's, as documented
above.
* pnmcomp always assumes the input is linear, as pamcomp
does when you
specify its -linear option.
* pnmcomp cannot process PAM images.
UNIX/Linux commands referenced on this page:
- composite
- pamcomp
- as