segment {EBImage} | R Documentation |
Fucntions to segment images and detect edges.
edge(x, r=0, ...) segment(x, cl=10, s=1.5, ...) fill(x, col, xoff, yoff, fuzz=10, method="floodfill", ...) ## FIXME: still not implemented, unclear API
x
Image-class
. r
cl
s
col
character
, gray
value or integer byte-coded value).xoff, yoff
fuzz
...
A transformed image in an object of Image-class
.
edge
returns an image of edges between different colours in the
original image. Most effective on binary images.
segment
segment an image by analyzing the histograms of the color
components and identifying units that are homogeneous with the fuzzy
C-means technique (source and implementation ImageMagick
). The
smoothing threshold eliminates noise in the second derivative of the
histogram. As the value is increased, you can expect a smoother second
derivative.
fill
should allow colour fill, but ImageMagick API is not clear and the
current implementation does not seem to produce any reasonable result.
Therefore the function will currently produce an error message, should be
corrected in future releases.
Copyright (c) 2005-2006 Oleg Sklyar : osklyar@ebi.ac.uk
ImageMagick: http://www.imagemagick.org.