Provided by: printbill_4.1.2-1.1_i386 bug

NAME
       percentcolour  -  how  much  C/M/Y/K  coverage  is there in a given PNG
       image.


SYNOPSIS
       percentcolour filename.png


DESCRIPTION
       percentcolour prints the percentage coverage for  a  given  colour  PNG
       image, to three decimal places.  filename.png must be 3x8-bit RGB, such
       as is generated by GhostScript’s  png16m  device.  The  cyan,  magenta,
       yellow and black components are printed on standard output separated by
       a colon (:).


EXAMPLE
       percentcolour filename.png

       yields

            33.142:12.042:4.665:0.516

       indicating that 33.142% of the page is  covered  in  cyan,  12.042%  by
       magenta, 4.665% by yellow and 0.516% by black.


REQUIREMENTS
       percentcolour only requires libpng to be present on the system.


INSTALLATION
       Please  see  the accompanying README and INSTALL files for installation
       instructions.  Chances  are  if  you’re  reading  this  it’s  correctly
       installed.


AUTHORS
       printbill  and  the  accompanying  utilities  were  written  by  Daniel
       Franklin (d.franklin@ieee.org). The web interface was written  by  Phil
       Ciufo (phil@snrc.uow.edu.au).


AVAILABILITY
       You   can   always   grab   the   latest   and  greatest  version  from
       http://ieee.uow.edu.au/~daniel/software/printbill


SEE ALSO
       printbill(1),  printbill(8),   printbilld(1),   printbill_configure(8),
       printbill_grapher(1),   percentblack(1),   percent_cmy(1),  pqcheck(1),
       printquote(1),   printbill_printer(1),   printbillrc(5),   printcap(5),
       init_from_passwd(8), pqm(8).