Unix/Linux Go Back    


CentOS 7.0 - man page for ppmntsc (centos section 0)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


Ppmntsc User Manual(0)							   Ppmntsc User Manual(0)

NAME
       ppmntsc - Make RGB colors legal for NTSC or PAL color systems.

SYNOPSIS
       ppmntsc

       [--pal] [--legalonly] [--illegalonly] [--correctedonly] [--verbose] [--debug] [infile]

       Minimum unique abbreviations of options are acceptable.

DESCRIPTION
       This program is part of Netpbm(1)

       This  program makes colors legal in the NTSC (or PAL) color systems.  Often, images gener-
       ated on the computer are made for use in movies which ultimately end up	on  a  television
       screen.	 However,  the	range  of colors (as specified by their RGB values) on a computer
       does not match the range of colors that can be represented using the NTSC  (or  PAL)  sys-
       tems.  If an image with 'illegal' colors is sent directly to an NTSC (or PAL) video system
       for recording, the 'illegal' colors will be clipped.  This may result  in  an  undesirable
       looking picture.

       This  utility  tests  each  pixel in an image to see if it falls within the legal NTSC (or
       PAL) range.  If not, it raises or lowers the pixel's saturation in the output so  that  it
       does  fall  within  legal  limits.  Pixels that are already OK just go unmodified into the
       output.

       Input is from the file named input.  If input is -, input is from Standard Input.  If  you
       don't specify input, input is from Standard Input.

       Output is always to Standard Output.

       This program handles multi-image PPM input, producing multi-image PPM output.

OPTIONS
       --pal  Use the PAL transform instead of the default NTSC.

       --verbose
	      Print a grand total of the number of illegal pixels.

       --debug
	      Produce  a humongous listing of illegal colors and their legal counterparts.  NOTE:
	      This option may produce a great deal of output.

       --legalonly
	      Output only pixels that are already legal.  Output black in place  of  pixels  that
	      are not.

       --illegalonly
	      Output only pixels that are illegal (and output them uncorrected).  Output black in
	      place of pixels that are already legal.

       --correctedonly
	      Output only pixels that are corrected versions of illegal pixels.  Output black  in
	      place of pixels that are already legal.

SEE ALSO
       pamdepth(1) , ppmdim(1) , ppmbrighten(1) , ppm(1)

AUTHOR
       Wes Barris, Minnesota Supercomputer Center, Inc., Bryan Henderson

netpbm documentation			  April 19, 2000		   Ppmntsc User Manual(0)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 09:21 AM.