Unix/Linux Go Back    


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

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


Ppmrough User Manual(0) 						  Ppmrough User Manual(0)

NAME
       ppmrough - create PPM image of two colors with a ragged border between them

SYNOPSIS
       ppmrough

       [-left pixels]

       [-right pixels]

       [-top pixels]

       [-bottom pixels]

       [-width pixels]

       [-height pixels]

       [-bg rgb:##/##/##]

       [-fg rgb:##/##/##]

       [-var pixels]

       [-randomseed seed]

       [-verbose]

       All  options  can be abbreviated to their shortest unique prefix.  You may use two hyphens
       instead of one.	You may separate an option name and its value with white space instead of
       an equals sign.

DESCRIPTION
       This program is part of Netpbm(1)

       ppmrough generates a PPM image of the specified width, height, and colors.  ppmrough tiles
       the image into semi-rectangular regions with a ragged borders between them.  It calculates
       the fluctuations with the rand() standard C library function.

       ppmrough writes the PPM image to Standard Output.

       The maxval of the output image is 255 (You can change this with pamdepth).

       Use the options -left or -right, respectively, to make vertical borders, and -top or -bot-
       tom, respectively, to generate horizontal borders inside the image.  Each of these options
       needs  an integer value pixels that determines the average distance of the interior border
       to the related edge of the image.  You may combine the -left, -right,  -top,  and  -bottom
       options	to  generate  an image with more than one border.  The algorithm ensures that you
       can concatenate two images produced with the same (i.e. -left) value without dislocations.

       You specify the dimensions of the generated image with the -width and -height options.

       Use the -bg and -fg options to set the background (margin) color and the foreground (inte-
       rior) color, respectively.  If you don't specify any of the -left, -right, -top, and -bot-
       tom options, all pixels are set to foreground color.  The defaults  are	white  foreground
       and black background.

       Use  the -var option to control the 'raggedness' of the border.	The less its value is the
       smoother the border is.	You can initialize the pseudo-random  generator  with  the  -init
       option.

       You  could  use ppmrough with ppmtopgm to create a PGM alpha mask and use it to roughen up
       the edges of another image.

OPTIONS
       -left=pixels
	       Specifies the mean distance of the border from the left margin (default:  no  bor-
	      der).

       -right=pixels
	      Specifies  the  mean distance of the border from the right margin (default: no bor-
	      der).

       -top=pixels
	      Specifies the mean distance of the border from the top margin (default: no border).

       -bottom=pixels
	      Specifies the mean distance of the border from the bottom margin (default: no  bor-
	      der).

       -width=pixels
	      Specifies the width of the image (default: 100).

       -height=pixels
	      Specifies the height of the image (default: 100).

       -bg=color
	      Background color.  Specify this the same way you specify a color with
		   ppmmake.  Default is black.

       -fg=color
	      Foreground color.  Specify this the same way you specify a color with
		   ppmmake.  Default is white.

       -var=pixels
	       Specifies  the  variance  of  the  ragged border (default: 10). Must be a positive
	      integer.	Set pixels to 1 to get a straight border.

       -randomseed=seed
	      Use this option to initialize the pseudo-random number generator	(the  Standard	C
	      library srand() function) with seed.

	      Before Netpbm 10.61 (December 2012), this is called -init, and that still works.

       -verbose
	      Run ppmrough in verbose mode.  It reports all parameters on Standard Error.

SEE ALSO
       ppmmake(1) , pnmcat(1) , ppmtopgm(1) , ppm(1) ,

HISTORY
       This program was added to Netpbm in Release 10.9 (September 2002).

AUTHOR
       Copyright (C) 2002 by Eckard Specht.

netpbm documentation			  23 August 2002		  Ppmrough User Manual(0)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 01:59 AM.