pnmdepth(1)

NAME

       pnmdepth - change the maxval in a portable anymap

SYNOPSIS

       pnmdepth newmaxval [pnmfile]

DESCRIPTION

       Reads  a  portable  anymap  as input.  Scales all the pixel values, and
       writes out the image with the new maxval.  Scaling the colors down to a
       smaller maxval will result in some loss of information.

       Be  careful  of  off-by-one  errors  when choosing the new maxval.  For
       instance, if you want the color values to be five bits wide, use a max-
       val of 31, not 32.

SEE ALSO

       pnm(5), ppmquant(1), ppmdither(1)

AUTHOR

       Copyright (C) 1989, 1991 by Jef Poskanzer.

                                12 January 1991                    pnmdepth(1)