ppmtv - make a PPM image look like taken from an American TV

       Copyright (C) 1993 by Frank Neumann

       This program is part of Netpbm(1).

       ppmtv reads a PPM image as input and dims every other row of image data down by the specified dim factor.
       This factor may be in the range of 0.0 (the alternate lines are totally black) to 1.0 (original image).

       This  creates  an  effect  similar  to  what  I've  once  seen  in  the video clip 'You could be mine' by
       Guns'n'Roses.  In the scene I'm talking about you can see John Connor on his motorbike, looking  up  from
       the  water  trench  (?)   he's  standing  in.   While  the  camera pulls back, the image gets 'normal' by
       brightening up the alternate rows of it. I thought this would be an interesting effect to try in MPEG.  I
       did not yet check this out, however.  Try for yourself.

       This  manual  page was generated by the Netpbm tool 'makeman' from HTML source.  The master documentation
       is at

              http://netpbm.sourceforge.net/doc/ppmtv.html

netpbm documentation                            16 November 1993                            PpmtvUserManual(1)

       ppmtv - make a PPM image look like taken from an American TV

       There are no command line options defined specifically for ppmtv, but it recognizes the options common to
       all programs based on libnetpbm (See  Common Options .)

ppm(1), ppmdim(1)

       ppmtv dimfactor

       [ppmfile]