pamtopnm man page on CentOS

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Pamtopnm User Manual(0)				       Pamtopnm User Manual(0)

NAME
       pamtopnm - convert PAM image to PBM, PGM, or PPM

SYNOPSIS
       pamtopnm

       [-assume]

       [pnmfile]

       Minimum	unique abbreviation of option is acceptable.  You may use dou‐
       ble 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(1).

       pamtopnm reads a PAM image as input and	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(1),  pamditherbw(1), pgmtoppm(1), ppmtopgm(1), pam(1), pnm(1),
       pbm(1), pgm(1), ppm(1)

HISTORY
       pamtopnm was new, along with the PAM  format,  in  Netpbm  9.7  (August
       2000).

netpbm documentation		03 August 2000	       Pamtopnm User Manual(0)
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