1Pamoil User Manual(0)                                    Pamoil User Manual(0)
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NAME

6       pamoil - turn a PAM image into an oil painting
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SYNOPSIS

10       pamoil
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12       [-n N]
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14       [pamfile]
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DESCRIPTION

18       This program is part of Netpbm(1).
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20       pamoil  reads  a  Netpbm image as input and does an 'oil transfer', and
21       writes the same type of Netpbm image as output.
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23       The oil transfer is described  in  'Beyond  Photography'  by  Holzmann,
24       chapter 4, photo 7.  It's a sort of localized smearing.
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26       The  smearing  works  like  this: First, assume a grayscale image.  For
27       each pixel in the image, pamoil looks at a square  neighborhood  around
28       it.   pamoil  determines what is the most common pixel intensity in the
29       neighborhood, and puts a pixel of that intensity into the output in the
30       same position as the input pixel.
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32       For color images, or any arbitrary multi-channel image, pamoil computes
33       each channel (e.g. red, green, and blue) separately the same way as the
34       grayscale case above.
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36       At the edges of the image, where the regular neighborhood would run off
37       the edge of the image, pamoil uses a clipped neighborhood.
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OPTIONS

41       -n size
42              This is the size of the neighborhood used in the smearing.   The
43              neighborhood is this many pixels in all four directions.
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45              The default is 3.
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SEE ALSO

52       pgmbentley(1), ppmrelief(1), ppm(1)
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AUTHOR

55       This  program  is  based  on  pgmoil  Copyright (C) 1990 by Wilson Bent
56       (whb@hoh-2.att.com)
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58       Modified to ppm by Chris Sheppard, June 25, 2001
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60       Modified to pnm, using pam functions, by Bryan Henderson June 28, 2001.
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64netpbm documentation             25 June 2001            Pamoil User Manual(0)