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


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

       pamwipeout {-lr | -tb} [filename]

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

       This program is part of Netpbm(1)

       The pamwipeout utility takes a Neptbm 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 unwanted parts of a larger image.  The program  replaces  the
       pixels in between the two edges with a gradient from one edge to the other.

       In top-bottom mode, the program reads the whole image into memory before it can start pro-
       cessing.  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 instead 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 "pnmblend". It shows a good example of
       what can be accomplished with this utility.

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

       <dl compact="compact">

       -tb | -lr

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

	and pamflip(1) , pamcut(1) , pamcomp(1) , pnmpaste(1)

       pamwipeout was new in Netpbm 10.54 (March 2011).

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

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