ppmtoleaf(1) [minix man page]

ppmtoleaf(1)                                                  General Commands Manual                                                 ppmtoleaf(1)

NAME

       ppmtoleaf - convert portable pixmap to Interleaf image format

SYNOPSIS

       ppmtoleaf [ppmfile]

DESCRIPTION

       Reads an Interleaf image file as input.  Generates a portable pixmap (PPM file) as output.

       Interleaf is a now-defunct (actually purchased ca. 2000 by BroadVision) technical publishing software company.

SEE ALSO

       ppm(5), ppmquant(1)

AUTHOR

       The program is copyright (C) 1994 by Bill O'Donnell.

                                                                   01 June 2000                                                       ppmtoleaf(1)

ppmtopgm(1)						      General Commands Manual						       ppmtopgm(1)

NAME

       ppmtopgm - convert a portable pixmap into a portable graymap

SYNOPSIS

       ppmtopgm [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as  input.  Produces a portable graymap as output.  The output is a "black and white" rendering of the original
       image, as in a black and white photograph.  The quantization formula used is .299 r + .587 g + .114 b.

       Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any  ppm  program  can
       read  pgm  (and	pbm  ) files automatically.  pgmtoppm is for colorizing a pgm file.  Also, see ppmtorgb3 for a different way of converting
       color to gray.  And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate  the  original
       colors, not necessarily a way that looks like a black and white photograph.

QUOTE

       Cold-hearted orb that rules the night
       Removes the colors from our sight
       Red is gray, and yellow white
       But we decide which is right
       And which is a quantization error.

SEE ALSO

       pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

								   10 April 2000						       ppmtopgm(1)