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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

       The oil transfer is described in 'Beyond Photography' by Holzmann, chapter 4, photo 7.  It's a sort  of  local-
       ized 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 (

       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)