pamtopnm
Updated: 03 August 2000
Index
NAME
pamtopnm - convert PAM image to PBM, PGM, or PPM
SYNOPSIS
pamtopnm
[-assume]
[pnmfile]
All options may be abbreviated to the shortest unique prefix.
DESCRIPTION
Reads a PAM image as input. Produces an equivalent PBM, PGM, or PPM
(i.e. PNM) image, whichever is most appropriate, as output.
pamtopnm
assumes the PAM image represents the information required for a PBM,
PGM, or PPM image if its tuple type is "BLACKANDWHITE", "GRAYSCALE",
or "RGB" and its depth and maxval are appropriate. If this is not
the case,
pamtopnm
fails.
However, you can override the tuple type requirement with the
-assume
option.
As with any Netpbm program that reads PAM images,
pamtopnm
also reads PNM images as if they were PAM. In that case,
pamtopnm's
functions reduces to simply copying the input to the output. But this
can be useful in a program that doesn't know whether its input is PAM
or PNM but needs to feed it to a program that only recognizes PNM.
OPTIONS
- -assume
-
When you specify
-assume,
you tell
pamtopnm
that you personally vouch for the fact that the tuples contain the same
data as belongs in the channels of a PBM, PGM, or PPM file. The depth
must still conform, though, so to truly force a conversion, you may have
to run the input through
pamchannel
first. But be careful with
-assume.
When you -assume, you make an -ass of u and me.
SEE ALSO
pbmtopgm,
pgmtopbm,
pgmtoppm,
ppmtopgm,
pam,
pnm,
pbm,
pgm,
ppm
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- SEE ALSO
-