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Pamwipeout User	Manual(0)			     Pamwipeout	User Manual(0)

NAME
       pamwipeout  -  replace detail with smooth gradient from one edge	to the
       other

SYNOPSIS
       pamwipeout {-lr | -tb} [filename]

       Minimum unique abbreviation of options is acceptable.  You may use dou-
       ble hyphens instead of single hyphen to denote options.

DESCRIPTION
       This program is part of Netpbm(1).

       The  pamwipeout	utility	takes a	Netpbm image as	input and the uses two
       opposite	edges of the image to wipe out anything	in between.   You  can
       use  it in combination with pamcut and pnmpaste / pamcomp to remove un-
       wanted parts of a larger	image.	The program replaces the pixels	in be-
       tween the two edges with	a gradient from	one edge to the	other.

       In  top-bottom  mode, the program reads the whole image into memory be-
       fore it can start processing.  In left-right it will read the  image  a
       row  at	the  time,  process  that row and write	it to the output file.
       Therefore, in case of very large	images,	it may be better  to  use  in-
       stead  of  "pamwipeout  -tb"  a pipe of "pamflip	-cw | pamwipeout -lr |
       pamflip -ccw".

       In his blog at

       www.i-am.ws <http://www.i-am.ws/entry/pnmblend_disappearing_act>	,  the
       author wrote about a predecessor	of "pamwipeout"	at the time named "pn-
       mblend".	It shows a good	example	of what	can be accomplished with  this
       utility.

PARAMETERS
       Filename	 is  the  name	of  the	input file. If you don't specify this,
       pamwipeout reads	the image from Standard	Input.

OPTIONS
       -tb | -lr

	      This option chooses between a vertical and a  horizontal	gradi-
	      ent.  You	must specify one of these, but not both.

SEE ALSO
       pam(1) and pamflip(1), pamcut(1), pamcomp(1), pnmpaste(1).

HISTORY
       pamwipeout was new in Netpbm 10.54 (March 2011).

AUTHORS
       Willem van Schaik wrote this program in January 2011 and	contributed it
       to Netpbm.

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

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

netpbm documentation	       February	26, 2011     Pamwipeout	User Manual(0)

NAME | SYNOPSIS | DESCRIPTION | PARAMETERS | OPTIONS | SEE ALSO | HISTORY | AUTHORS | DOCUMENT SOURCE

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