pamoil(1)


NAME

   pamoil - turn a PAM image into an oil painting

SYNOPSIS

   pamoil [-n N] [pamfile]

DESCRIPTION

   Reads  a Netpbm image as input.  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.

OPTIONS

   -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.

SEE ALSO

   pgmbentley(1), ppmrelief(1), ppm(5)

AUTHOR

   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.

                             25 June 2001                        pamoil(1)





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