pamoil(1)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 ALSOpgmbentley(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)
