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Pamoil User Manual(0)							    Pamoil User Manual(0)

       pamoil - turn a PAM image into an oil painting


       [-n N]


       This program is part of Netpbm(1)

       pamoil  reads a Netpbm image as input and does an 'oil transfer', and writes the same type
       of Netpbm image as output.

       The oil transfer is described in 'Beyond Photography' by Holzmann,  chapter  4,	photo  7.
       It's a sort of localized smearing.

       The  smearing  works  like  this:  First, assume a grayscale image.  For each pixel in the
       image, pamoil looks at a square neighborhood around it.	pamoil	determines  what  is  the
       most  common  pixel intensity in the neighborhood, and puts a pixel of that intensity into
       the output in the same position as the input pixel.

       For color images, or any arbitrary multi-channel image, pamoil computes each channel (e.g.
       red, green, and blue) separately the same way as the grayscale case above.

       At  the	edges  of the image, where the regular neighborhood would run off the edge of the
       image, pamoil uses a clipped neighborhood.

       -n size
	      This is the size of the neighborhood used in the	smearing.   The  neighborhood  is
	      this many pixels in all four directions.

	      The default is 3.

       pgmbentley(1) , ppmrelief(1) , ppm(1)

       This program is based on pgmoil Copyright (C) 1990 by Wilson Bent (whb@hoh-2.att.com)

       Modified to ppm by Chris Sheppard, June 25, 2001

       Modified to pnm, using pam functions, by Bryan Henderson June 28, 2001.

netpbm documentation			   25 June 2001 		    Pamoil User Manual(0)
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